Commit | Line | Data |
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d956a2cd JA |
1 | /* |
2 | * block queue tracing parse application | |
3 | * | |
4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
d0ca268b JA |
21 | #include <sys/types.h> |
22 | #include <sys/stat.h> | |
23 | #include <unistd.h> | |
24 | #include <stdio.h> | |
25 | #include <fcntl.h> | |
26 | #include <stdlib.h> | |
8fc0abbc | 27 | #include <string.h> |
d5396421 | 28 | #include <getopt.h> |
412819ce JA |
29 | #include <errno.h> |
30 | #include <signal.h> | |
d69db225 | 31 | #include <locale.h> |
46e6968b | 32 | #include <limits.h> |
d0ca268b | 33 | |
8fc0abbc JA |
34 | #include "blktrace.h" |
35 | #include "rbtree.h" | |
bf0720af | 36 | #include "jhash.h" |
d0ca268b | 37 | |
52724a0e JA |
38 | static char blkparse_version[] = "0.90"; |
39 | ||
e7c9f3ff | 40 | struct per_dev_info { |
f7bd1a9b | 41 | dev_t dev; |
e7c9f3ff NS |
42 | char *name; |
43 | ||
44 | int backwards; | |
45 | unsigned long long events; | |
46 | unsigned long long last_reported_time; | |
287fa3d6 | 47 | unsigned long long last_read_time; |
e7c9f3ff | 48 | struct io_stats io_stats; |
cb2a1a62 | 49 | unsigned long last_sequence; |
dcf0f7ed | 50 | unsigned long skips; |
e7c9f3ff | 51 | |
2a1b3424 JA |
52 | struct rb_root rb_last; |
53 | unsigned long rb_last_entries; | |
54 | ||
f7bd1a9b JA |
55 | struct rb_root rb_track; |
56 | ||
73877e12 | 57 | int nfiles; |
e7c9f3ff NS |
58 | int ncpus; |
59 | struct per_cpu_info *cpus; | |
60 | }; | |
61 | ||
152f6476 JA |
62 | struct per_process_info { |
63 | char name[16]; | |
64 | __u32 pid; | |
65 | struct io_stats io_stats; | |
66 | struct per_process_info *hash_next, *list_next; | |
715d8021 | 67 | int more_than_one; |
50adc0ba JA |
68 | |
69 | /* | |
70 | * individual io stats | |
71 | */ | |
b9d40d6f JA |
72 | unsigned long long longest_allocation_wait[2]; |
73 | unsigned long long longest_dispatch_wait[2]; | |
74 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
75 | }; |
76 | ||
152f6476 | 77 | #define PPI_HASH_SHIFT (8) |
bf0720af JA |
78 | #define PPI_HASH_SIZE (1 << PPI_HASH_SHIFT) |
79 | #define PPI_HASH_MASK (PPI_HASH_SIZE - 1) | |
80 | static struct per_process_info *ppi_hash_table[PPI_HASH_SIZE]; | |
152f6476 | 81 | static struct per_process_info *ppi_list; |
886ecf0e | 82 | static int ppi_list_entries; |
152f6476 | 83 | |
7d1c0411 | 84 | #define S_OPTS "i:o:b:stqw:f:F:vnm" |
d5396421 JA |
85 | static struct option l_opts[] = { |
86 | { | |
87 | .name = "input", | |
428683db | 88 | .has_arg = required_argument, |
d5396421 JA |
89 | .flag = NULL, |
90 | .val = 'i' | |
91 | }, | |
92 | { | |
93 | .name = "output", | |
428683db | 94 | .has_arg = required_argument, |
d5396421 JA |
95 | .flag = NULL, |
96 | .val = 'o' | |
97 | }, | |
79f19470 JA |
98 | { |
99 | .name = "batch", | |
428683db | 100 | .has_arg = required_argument, |
79f19470 JA |
101 | .flag = NULL, |
102 | .val = 'b' | |
103 | }, | |
152f6476 JA |
104 | { |
105 | .name = "per program stats", | |
428683db | 106 | .has_arg = no_argument, |
152f6476 JA |
107 | .flag = NULL, |
108 | .val = 's' | |
109 | }, | |
7997c5b0 JA |
110 | { |
111 | .name = "track ios", | |
428683db | 112 | .has_arg = no_argument, |
7997c5b0 JA |
113 | .flag = NULL, |
114 | .val = 't' | |
115 | }, | |
1e1c60f1 NS |
116 | { |
117 | .name = "quiet", | |
428683db | 118 | .has_arg = no_argument, |
1e1c60f1 NS |
119 | .flag = NULL, |
120 | .val = 'q' | |
121 | }, | |
46e6968b NS |
122 | { |
123 | .name = "stopwatch", | |
428683db | 124 | .has_arg = required_argument, |
46e6968b NS |
125 | .flag = NULL, |
126 | .val = 'w' | |
127 | }, | |
ab197ca7 AB |
128 | { |
129 | .name = "format", | |
428683db | 130 | .has_arg = required_argument, |
ab197ca7 AB |
131 | .flag = NULL, |
132 | .val = 'f' | |
133 | }, | |
134 | { | |
135 | .name = "format-spec", | |
428683db | 136 | .has_arg = required_argument, |
ab197ca7 AB |
137 | .flag = NULL, |
138 | .val = 'F' | |
139 | }, | |
bf0720af JA |
140 | { |
141 | .name = "hash by name", | |
142 | .has_arg = no_argument, | |
143 | .flag = NULL, | |
144 | .val = 'n' | |
145 | }, | |
7d1c0411 JA |
146 | { |
147 | .name = "missing", | |
148 | .has_arg = no_argument, | |
149 | .flag = NULL, | |
150 | .val = 'm' | |
151 | }, | |
52724a0e JA |
152 | { |
153 | .name = "version", | |
154 | .has_arg = no_argument, | |
155 | .flag = NULL, | |
156 | .val = 'v' | |
157 | }, | |
d5396421 JA |
158 | }; |
159 | ||
7997c5b0 JA |
160 | /* |
161 | * for sorting the displayed output | |
162 | */ | |
8fc0abbc JA |
163 | struct trace { |
164 | struct blk_io_trace *bit; | |
165 | struct rb_node rb_node; | |
cb2a1a62 | 166 | struct trace *next; |
8fc0abbc JA |
167 | }; |
168 | ||
cb2a1a62 | 169 | static struct rb_root rb_sort_root; |
a649216c JA |
170 | static unsigned long rb_sort_entries; |
171 | ||
cb2a1a62 JA |
172 | static struct trace *trace_list; |
173 | ||
d36421e4 JA |
174 | /* |
175 | * allocation cache | |
176 | */ | |
177 | static struct blk_io_trace *bit_alloc_list; | |
178 | static struct trace *t_alloc_list; | |
179 | ||
7997c5b0 JA |
180 | /* |
181 | * for tracking individual ios | |
182 | */ | |
183 | struct io_track { | |
184 | struct rb_node rb_node; | |
185 | ||
186 | __u64 sector; | |
187 | __u32 pid; | |
bf0720af | 188 | char comm[16]; |
95c15013 | 189 | unsigned long long allocation_time; |
7997c5b0 JA |
190 | unsigned long long queue_time; |
191 | unsigned long long dispatch_time; | |
192 | unsigned long long completion_time; | |
193 | }; | |
194 | ||
e7c9f3ff NS |
195 | static int ndevices; |
196 | static struct per_dev_info *devices; | |
197 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
d0ca268b | 198 | |
71d5d4c9 | 199 | FILE *ofp = NULL; |
e7c9f3ff NS |
200 | static char *output_name; |
201 | ||
202 | static unsigned long long genesis_time; | |
287fa3d6 | 203 | static unsigned long long last_allowed_time; |
1c7c54aa | 204 | static unsigned int smallest_seq_read; |
46e6968b NS |
205 | static unsigned long long stopwatch_start; /* start from zero by default */ |
206 | static unsigned long long stopwatch_end = ULONG_LONG_MAX; /* "infinity" */ | |
152f6476 JA |
207 | |
208 | static int per_process_stats; | |
7997c5b0 | 209 | static int track_ios; |
bf0720af | 210 | static int ppi_hash_by_pid = 1; |
7d1c0411 | 211 | static int print_missing; |
d0ca268b | 212 | |
1d24fc14 JA |
213 | static unsigned int t_alloc_cache; |
214 | static unsigned int bit_alloc_cache; | |
215 | ||
7d747d22 | 216 | #define RB_BATCH_DEFAULT (512) |
e820abd7 | 217 | static unsigned int rb_batch = RB_BATCH_DEFAULT; |
79f19470 | 218 | |
e7c9f3ff NS |
219 | static int pipeline; |
220 | ||
412819ce JA |
221 | #define is_done() (*(volatile int *)(&done)) |
222 | static volatile int done; | |
223 | ||
bf0720af JA |
224 | #define JHASH_RANDOM (0x3af5f2ee) |
225 | ||
226 | static inline int ppi_hash_pid(__u32 pid) | |
227 | { | |
228 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
229 | } | |
230 | ||
231 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 232 | { |
bf0720af JA |
233 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
234 | } | |
235 | ||
236 | static inline int ppi_hash(struct per_process_info *ppi) | |
237 | { | |
238 | if (ppi_hash_by_pid) | |
239 | return ppi_hash_pid(ppi->pid); | |
240 | ||
bf0720af | 241 | return ppi_hash_name(ppi->name); |
152f6476 JA |
242 | } |
243 | ||
244 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
245 | { | |
bf0720af | 246 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 247 | |
bf0720af JA |
248 | ppi->hash_next = ppi_hash_table[hash_idx]; |
249 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
250 | } |
251 | ||
252 | static inline void add_process_to_list(struct per_process_info *ppi) | |
253 | { | |
254 | ppi->list_next = ppi_list; | |
255 | ppi_list = ppi; | |
886ecf0e | 256 | ppi_list_entries++; |
152f6476 JA |
257 | } |
258 | ||
bf0720af JA |
259 | static struct per_process_info *find_process_by_name(char *name) |
260 | { | |
261 | const int hash_idx = ppi_hash_name(name); | |
262 | struct per_process_info *ppi; | |
263 | ||
264 | ppi = ppi_hash_table[hash_idx]; | |
265 | while (ppi) { | |
266 | if (!strcmp(ppi->name, name)) | |
267 | return ppi; | |
268 | ||
269 | ppi = ppi->hash_next; | |
270 | } | |
271 | ||
272 | return NULL; | |
273 | } | |
274 | ||
152f6476 JA |
275 | static struct per_process_info *find_process_by_pid(__u32 pid) |
276 | { | |
bf0720af | 277 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
278 | struct per_process_info *ppi; |
279 | ||
bf0720af | 280 | ppi = ppi_hash_table[hash_idx]; |
152f6476 JA |
281 | while (ppi) { |
282 | if (ppi->pid == pid) | |
283 | return ppi; | |
284 | ||
285 | ppi = ppi->hash_next; | |
286 | } | |
287 | ||
288 | return NULL; | |
289 | } | |
290 | ||
bf0720af JA |
291 | static struct per_process_info *find_process(__u32 pid, char *name) |
292 | { | |
715d8021 JA |
293 | struct per_process_info *ppi; |
294 | ||
bf0720af JA |
295 | if (ppi_hash_by_pid) |
296 | return find_process_by_pid(pid); | |
297 | ||
715d8021 JA |
298 | ppi = find_process_by_name(name); |
299 | if (ppi && ppi->pid != pid) | |
300 | ppi->more_than_one = 1; | |
301 | ||
302 | return ppi; | |
bf0720af JA |
303 | } |
304 | ||
23211fdf JA |
305 | static inline int trace_rb_insert(struct trace *t, struct rb_root *root, |
306 | int check_time) | |
7997c5b0 | 307 | { |
2a1b3424 | 308 | struct rb_node **p = &root->rb_node; |
7997c5b0 JA |
309 | struct rb_node *parent = NULL; |
310 | struct trace *__t; | |
311 | ||
312 | while (*p) { | |
313 | parent = *p; | |
2a1b3424 | 314 | |
7997c5b0 JA |
315 | __t = rb_entry(parent, struct trace, rb_node); |
316 | ||
23211fdf JA |
317 | if (check_time) { |
318 | if (t->bit->time < __t->bit->time) { | |
319 | p = &(*p)->rb_left; | |
320 | continue; | |
321 | } else if (t->bit->time > __t->bit->time) { | |
322 | p = &(*p)->rb_right; | |
323 | continue; | |
324 | } | |
325 | } | |
326 | if (t->bit->device < __t->bit->device) | |
e7c9f3ff NS |
327 | p = &(*p)->rb_left; |
328 | else if (t->bit->device > __t->bit->device) | |
329 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
330 | else if (t->bit->sequence < __t->bit->sequence) |
331 | p = &(*p)->rb_left; | |
0b07f23e | 332 | else /* >= sequence */ |
dcf0f7ed | 333 | p = &(*p)->rb_right; |
7997c5b0 JA |
334 | } |
335 | ||
336 | rb_link_node(&t->rb_node, parent, p); | |
2a1b3424 | 337 | rb_insert_color(&t->rb_node, root); |
7997c5b0 JA |
338 | return 0; |
339 | } | |
340 | ||
2a1b3424 | 341 | static inline int trace_rb_insert_sort(struct trace *t) |
e3556946 | 342 | { |
23211fdf | 343 | if (!trace_rb_insert(t, &rb_sort_root, 1)) { |
2a1b3424 JA |
344 | rb_sort_entries++; |
345 | return 0; | |
346 | } | |
347 | ||
348 | return 1; | |
349 | } | |
350 | ||
351 | static inline int trace_rb_insert_last(struct per_dev_info *pdi,struct trace *t) | |
352 | { | |
23211fdf | 353 | if (!trace_rb_insert(t, &pdi->rb_last, 1)) { |
2a1b3424 JA |
354 | pdi->rb_last_entries++; |
355 | return 0; | |
356 | } | |
357 | ||
358 | return 1; | |
359 | } | |
360 | ||
361 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence, | |
362 | struct rb_root *root, int order) | |
363 | { | |
364 | struct rb_node *n = root->rb_node; | |
365 | struct rb_node *prev = NULL; | |
e3556946 JA |
366 | struct trace *__t; |
367 | ||
2a1b3424 JA |
368 | while (n) { |
369 | __t = rb_entry(n, struct trace, rb_node); | |
370 | prev = n; | |
e3556946 | 371 | |
0583b6a2 | 372 | if (device < __t->bit->device) |
2a1b3424 | 373 | n = n->rb_left; |
0583b6a2 | 374 | else if (device > __t->bit->device) |
2a1b3424 | 375 | n = n->rb_right; |
0583b6a2 | 376 | else if (sequence < __t->bit->sequence) |
2a1b3424 | 377 | n = n->rb_left; |
e3556946 | 378 | else if (sequence > __t->bit->sequence) |
2a1b3424 | 379 | n = n->rb_right; |
e3556946 JA |
380 | else |
381 | return __t; | |
382 | } | |
383 | ||
2a1b3424 JA |
384 | /* |
385 | * hack - the list may not be sequence ordered because some | |
386 | * events don't have sequence and time matched. so we end up | |
387 | * being a little off in the rb lookup here, because we don't | |
388 | * know the time we are looking for. compensate by browsing | |
389 | * a little ahead from the last entry to find the match | |
390 | */ | |
391 | if (order && prev) { | |
392 | int max = 5; | |
393 | ||
394 | while (((n = rb_next(prev)) != NULL) && max--) { | |
395 | __t = rb_entry(n, struct trace, rb_node); | |
396 | ||
397 | if (__t->bit->device == device && | |
398 | __t->bit->sequence == sequence) | |
399 | return __t; | |
400 | ||
401 | prev = n; | |
402 | } | |
403 | } | |
404 | ||
e3556946 JA |
405 | return NULL; |
406 | } | |
407 | ||
2a1b3424 JA |
408 | static inline struct trace *trace_rb_find_sort(dev_t dev, unsigned long seq) |
409 | { | |
410 | return trace_rb_find(dev, seq, &rb_sort_root, 1); | |
411 | } | |
412 | ||
413 | static inline struct trace *trace_rb_find_last(struct per_dev_info *pdi, | |
414 | unsigned long seq) | |
415 | { | |
f7bd1a9b | 416 | return trace_rb_find(pdi->dev, seq, &pdi->rb_last, 0); |
2a1b3424 JA |
417 | } |
418 | ||
f7bd1a9b | 419 | static inline int track_rb_insert(struct per_dev_info *pdi,struct io_track *iot) |
7997c5b0 | 420 | { |
f7bd1a9b | 421 | struct rb_node **p = &pdi->rb_track.rb_node; |
7997c5b0 JA |
422 | struct rb_node *parent = NULL; |
423 | struct io_track *__iot; | |
424 | ||
425 | while (*p) { | |
426 | parent = *p; | |
7997c5b0 JA |
427 | __iot = rb_entry(parent, struct io_track, rb_node); |
428 | ||
f7bd1a9b | 429 | if (iot->sector < __iot->sector) |
7997c5b0 JA |
430 | p = &(*p)->rb_left; |
431 | else if (iot->sector > __iot->sector) | |
432 | p = &(*p)->rb_right; | |
433 | else { | |
e7c9f3ff | 434 | fprintf(stderr, |
ab197ca7 AB |
435 | "sector alias (%Lu) on device %d,%d!\n", |
436 | (unsigned long long) iot->sector, | |
f7bd1a9b | 437 | MAJOR(pdi->dev), MINOR(pdi->dev)); |
7997c5b0 JA |
438 | return 1; |
439 | } | |
440 | } | |
441 | ||
442 | rb_link_node(&iot->rb_node, parent, p); | |
f7bd1a9b | 443 | rb_insert_color(&iot->rb_node, &pdi->rb_track); |
7997c5b0 JA |
444 | return 0; |
445 | } | |
446 | ||
f7bd1a9b | 447 | static struct io_track *__find_track(struct per_dev_info *pdi, __u64 sector) |
7997c5b0 | 448 | { |
f7bd1a9b | 449 | struct rb_node *n = pdi->rb_track.rb_node; |
7997c5b0 JA |
450 | struct io_track *__iot; |
451 | ||
2a1b3424 JA |
452 | while (n) { |
453 | __iot = rb_entry(n, struct io_track, rb_node); | |
7997c5b0 | 454 | |
f7bd1a9b | 455 | if (sector < __iot->sector) |
2a1b3424 | 456 | n = n->rb_left; |
7997c5b0 | 457 | else if (sector > __iot->sector) |
2a1b3424 | 458 | n = n->rb_right; |
7997c5b0 JA |
459 | else |
460 | return __iot; | |
461 | } | |
462 | ||
463 | return NULL; | |
464 | } | |
465 | ||
f7bd1a9b JA |
466 | static struct io_track *find_track(struct per_dev_info *pdi, __u32 pid, |
467 | char *comm, __u64 sector) | |
7997c5b0 | 468 | { |
916b5501 | 469 | struct io_track *iot; |
7997c5b0 | 470 | |
f7bd1a9b | 471 | iot = __find_track(pdi, sector); |
7997c5b0 JA |
472 | if (!iot) { |
473 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 474 | iot->pid = pid; |
bf0720af | 475 | memcpy(iot->comm, comm, sizeof(iot->comm)); |
7997c5b0 | 476 | iot->sector = sector; |
f7bd1a9b | 477 | track_rb_insert(pdi, iot); |
7997c5b0 JA |
478 | } |
479 | ||
480 | return iot; | |
481 | } | |
482 | ||
f7bd1a9b JA |
483 | static void log_track_frontmerge(struct per_dev_info *pdi, |
484 | struct blk_io_trace *t) | |
2e3e8ded JA |
485 | { |
486 | struct io_track *iot; | |
487 | ||
488 | if (!track_ios) | |
489 | return; | |
2e3e8ded | 490 | |
f7bd1a9b | 491 | iot = __find_track(pdi, t->sector + (t->bytes >> 9)); |
cb2a1a62 | 492 | if (!iot) { |
acd70d21 | 493 | fprintf(stderr, "merge not found for (%d,%d): %llu\n", |
f7bd1a9b | 494 | MAJOR(pdi->dev), MINOR(pdi->dev), |
85e84946 | 495 | (unsigned long long) t->sector + (t->bytes >> 9)); |
cb2a1a62 | 496 | return; |
2e3e8ded | 497 | } |
cb2a1a62 | 498 | |
f7bd1a9b | 499 | rb_erase(&iot->rb_node, &pdi->rb_track); |
a01516de | 500 | iot->sector -= t->bytes >> 9; |
f7bd1a9b | 501 | track_rb_insert(pdi, iot); |
2e3e8ded JA |
502 | } |
503 | ||
f7bd1a9b | 504 | static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace *t) |
2e3e8ded JA |
505 | { |
506 | struct io_track *iot; | |
507 | ||
508 | if (!track_ios) | |
509 | return; | |
510 | ||
f7bd1a9b | 511 | iot = find_track(pdi, t->pid, t->comm, t->sector); |
95c15013 JA |
512 | iot->allocation_time = t->time; |
513 | } | |
514 | ||
95c15013 | 515 | /* |
b6076a9b | 516 | * return time between rq allocation and insertion |
95c15013 | 517 | */ |
f7bd1a9b JA |
518 | static unsigned long long log_track_insert(struct per_dev_info *pdi, |
519 | struct blk_io_trace *t) | |
95c15013 | 520 | { |
50adc0ba | 521 | unsigned long long elapsed; |
95c15013 JA |
522 | struct io_track *iot; |
523 | ||
524 | if (!track_ios) | |
525 | return -1; | |
526 | ||
f7bd1a9b | 527 | iot = find_track(pdi, t->pid, t->comm, t->sector); |
2e3e8ded | 528 | iot->queue_time = t->time; |
acd70d21 JA |
529 | |
530 | if (!iot->allocation_time) | |
531 | return -1; | |
532 | ||
50adc0ba JA |
533 | elapsed = iot->queue_time - iot->allocation_time; |
534 | ||
535 | if (per_process_stats) { | |
bf0720af | 536 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 537 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 538 | |
b9d40d6f JA |
539 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
540 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
541 | } |
542 | ||
543 | return elapsed; | |
2e3e8ded JA |
544 | } |
545 | ||
546 | /* | |
547 | * return time between queue and issue | |
548 | */ | |
f7bd1a9b JA |
549 | static unsigned long long log_track_issue(struct per_dev_info *pdi, |
550 | struct blk_io_trace *t) | |
2e3e8ded | 551 | { |
50adc0ba | 552 | unsigned long long elapsed; |
2e3e8ded JA |
553 | struct io_track *iot; |
554 | ||
555 | if (!track_ios) | |
556 | return -1; | |
557 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
558 | return -1; | |
559 | ||
f7bd1a9b | 560 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 561 | if (!iot) { |
acd70d21 | 562 | fprintf(stderr, "issue not found for (%d,%d): %llu\n", |
85e84946 NS |
563 | MAJOR(pdi->dev), MINOR(pdi->dev), |
564 | (unsigned long long) t->sector); | |
2e3e8ded | 565 | return -1; |
cb2a1a62 | 566 | } |
2e3e8ded JA |
567 | |
568 | iot->dispatch_time = t->time; | |
50adc0ba JA |
569 | elapsed = iot->dispatch_time - iot->queue_time; |
570 | ||
571 | if (per_process_stats) { | |
bf0720af | 572 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 573 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 574 | |
b9d40d6f JA |
575 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
576 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
577 | } |
578 | ||
579 | return elapsed; | |
2e3e8ded JA |
580 | } |
581 | ||
582 | /* | |
583 | * return time between dispatch and complete | |
584 | */ | |
f7bd1a9b JA |
585 | static unsigned long long log_track_complete(struct per_dev_info *pdi, |
586 | struct blk_io_trace *t) | |
2e3e8ded JA |
587 | { |
588 | unsigned long long elapsed; | |
589 | struct io_track *iot; | |
590 | ||
591 | if (!track_ios) | |
592 | return -1; | |
593 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
594 | return -1; | |
595 | ||
f7bd1a9b | 596 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 597 | if (!iot) { |
acd70d21 | 598 | fprintf(stderr, "complete not found for (%d,%d): %llu\n", |
85e84946 NS |
599 | MAJOR(pdi->dev), MINOR(pdi->dev), |
600 | (unsigned long long) t->sector); | |
2e3e8ded | 601 | return -1; |
cb2a1a62 | 602 | } |
2e3e8ded JA |
603 | |
604 | iot->completion_time = t->time; | |
605 | elapsed = iot->completion_time - iot->dispatch_time; | |
606 | ||
50adc0ba | 607 | if (per_process_stats) { |
bf0720af | 608 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 609 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 610 | |
b9d40d6f JA |
611 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
612 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
613 | } |
614 | ||
2e3e8ded JA |
615 | /* |
616 | * kill the trace, we don't need it after completion | |
617 | */ | |
f7bd1a9b | 618 | rb_erase(&iot->rb_node, &pdi->rb_track); |
2e3e8ded JA |
619 | free(iot); |
620 | ||
621 | return elapsed; | |
622 | } | |
623 | ||
624 | ||
152f6476 JA |
625 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
626 | { | |
bf0720af | 627 | struct per_process_info *ppi = find_process(pid, name); |
152f6476 JA |
628 | |
629 | if (!ppi) { | |
630 | ppi = malloc(sizeof(*ppi)); | |
631 | memset(ppi, 0, sizeof(*ppi)); | |
bf0720af | 632 | memcpy(ppi->name, name, 16); |
152f6476 JA |
633 | ppi->pid = pid; |
634 | add_process_to_hash(ppi); | |
635 | add_process_to_list(ppi); | |
636 | } | |
637 | ||
638 | return &ppi->io_stats; | |
639 | } | |
640 | ||
e7c9f3ff | 641 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
a718bd37 | 642 | { |
e7c9f3ff NS |
643 | struct per_cpu_info *cpus = pdi->cpus; |
644 | int ncpus = pdi->ncpus; | |
645 | int new_count = cpu + 1; | |
646 | int new_space, size; | |
a718bd37 NS |
647 | char *new_start; |
648 | ||
e7c9f3ff NS |
649 | size = new_count * sizeof(struct per_cpu_info); |
650 | cpus = realloc(cpus, size); | |
651 | if (!cpus) { | |
652 | char name[20]; | |
653 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
654 | get_dev_name(pdi, name, sizeof(name)), size); | |
a718bd37 NS |
655 | exit(1); |
656 | } | |
657 | ||
e7c9f3ff NS |
658 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); |
659 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
a718bd37 | 660 | memset(new_start, 0, new_space); |
e7c9f3ff NS |
661 | |
662 | pdi->ncpus = new_count; | |
663 | pdi->cpus = cpus; | |
664 | } | |
cb2a1a62 | 665 | |
e7c9f3ff NS |
666 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) |
667 | { | |
cb2a1a62 JA |
668 | struct per_cpu_info *pci; |
669 | ||
e7c9f3ff NS |
670 | if (cpu >= pdi->ncpus) |
671 | resize_cpu_info(pdi, cpu); | |
cb2a1a62 JA |
672 | |
673 | pci = &pdi->cpus[cpu]; | |
674 | pci->cpu = cpu; | |
675 | return pci; | |
a718bd37 NS |
676 | } |
677 | ||
e7c9f3ff NS |
678 | |
679 | static int resize_devices(char *name) | |
a718bd37 | 680 | { |
e7c9f3ff | 681 | int size = (ndevices + 1) * sizeof(struct per_dev_info); |
c499bf38 | 682 | |
e7c9f3ff NS |
683 | devices = realloc(devices, size); |
684 | if (!devices) { | |
685 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
686 | return 1; | |
687 | } | |
688 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
689 | devices[ndevices].name = name; | |
690 | ndevices++; | |
691 | return 0; | |
692 | } | |
a718bd37 | 693 | |
f7bd1a9b | 694 | static struct per_dev_info *get_dev_info(dev_t dev) |
e7c9f3ff | 695 | { |
cb2a1a62 | 696 | struct per_dev_info *pdi; |
e7c9f3ff | 697 | int i; |
c499bf38 | 698 | |
7d747d22 | 699 | for (i = 0; i < ndevices; i++) { |
f7bd1a9b JA |
700 | if (!devices[i].dev) |
701 | devices[i].dev = dev; | |
702 | if (devices[i].dev == dev) | |
e7c9f3ff | 703 | return &devices[i]; |
7d747d22 | 704 | } |
cb2a1a62 | 705 | |
2a1b3424 | 706 | if (resize_devices(NULL)) |
e7c9f3ff | 707 | return NULL; |
cb2a1a62 JA |
708 | |
709 | pdi = &devices[ndevices - 1]; | |
f7bd1a9b | 710 | pdi->dev = dev; |
d6222db8 | 711 | pdi->last_sequence = -1; |
287fa3d6 | 712 | pdi->last_read_time = 0; |
2a1b3424 JA |
713 | memset(&pdi->rb_last, 0, sizeof(pdi->rb_last)); |
714 | pdi->rb_last_entries = 0; | |
cb2a1a62 | 715 | return pdi; |
a718bd37 NS |
716 | } |
717 | ||
e7c9f3ff NS |
718 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
719 | { | |
720 | if (pdi->name) | |
721 | snprintf(buffer, size, "%s", pdi->name); | |
722 | else | |
f7bd1a9b | 723 | snprintf(buffer, size, "%d,%d",MAJOR(pdi->dev),MINOR(pdi->dev)); |
e7c9f3ff NS |
724 | return buffer; |
725 | } | |
726 | ||
e7c9f3ff | 727 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
728 | { |
729 | unsigned long long this = bit->time; | |
e7c9f3ff | 730 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 731 | |
e7c9f3ff NS |
732 | pdi->backwards = (this < last) ? 'B' : ' '; |
733 | pdi->last_reported_time = this; | |
cfab07eb AB |
734 | } |
735 | ||
152f6476 JA |
736 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
737 | int rw) | |
d0ca268b JA |
738 | { |
739 | if (rw) { | |
152f6476 JA |
740 | ios->mwrites++; |
741 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 742 | } else { |
152f6476 JA |
743 | ios->mreads++; |
744 | ios->qread_kb += t->bytes >> 10; | |
745 | } | |
746 | } | |
747 | ||
748 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
749 | int rw) | |
750 | { | |
751 | __account_m(&pci->io_stats, t, rw); | |
752 | ||
753 | if (per_process_stats) { | |
754 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
755 | ||
756 | __account_m(ios, t, rw); | |
d0ca268b JA |
757 | } |
758 | } | |
759 | ||
b6076a9b JA |
760 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
761 | int rw) | |
d0ca268b JA |
762 | { |
763 | if (rw) { | |
152f6476 JA |
764 | ios->qwrites++; |
765 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 766 | } else { |
152f6476 JA |
767 | ios->qreads++; |
768 | ios->qread_kb += t->bytes >> 10; | |
769 | } | |
770 | } | |
771 | ||
b6076a9b JA |
772 | static inline void account_queue(struct blk_io_trace *t, |
773 | struct per_cpu_info *pci, int rw) | |
152f6476 | 774 | { |
b6076a9b | 775 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
776 | |
777 | if (per_process_stats) { | |
778 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
779 | ||
b6076a9b | 780 | __account_queue(ios, t, rw); |
d0ca268b JA |
781 | } |
782 | } | |
783 | ||
152f6476 | 784 | static inline void __account_c(struct io_stats *ios, int rw, unsigned int bytes) |
d0ca268b JA |
785 | { |
786 | if (rw) { | |
152f6476 JA |
787 | ios->cwrites++; |
788 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 789 | } else { |
152f6476 JA |
790 | ios->creads++; |
791 | ios->cread_kb += bytes >> 10; | |
792 | } | |
793 | } | |
794 | ||
795 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
796 | int rw, int bytes) | |
797 | { | |
798 | __account_c(&pci->io_stats, rw, bytes); | |
799 | ||
800 | if (per_process_stats) { | |
801 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
802 | ||
803 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
804 | } |
805 | } | |
806 | ||
b6076a9b JA |
807 | static inline void __account_issue(struct io_stats *ios, int rw, |
808 | unsigned int bytes) | |
afd2d7ad | 809 | { |
810 | if (rw) { | |
152f6476 JA |
811 | ios->iwrites++; |
812 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 813 | } else { |
152f6476 JA |
814 | ios->ireads++; |
815 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 816 | } |
817 | } | |
818 | ||
b6076a9b JA |
819 | static inline void account_issue(struct blk_io_trace *t, |
820 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 821 | { |
b6076a9b | 822 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
823 | |
824 | if (per_process_stats) { | |
825 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 826 | |
b6076a9b | 827 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
828 | } |
829 | } | |
830 | ||
06639b27 JA |
831 | static inline void __account_unplug(struct io_stats *ios, int timer) |
832 | { | |
833 | if (timer) | |
834 | ios->timer_unplugs++; | |
835 | else | |
836 | ios->io_unplugs++; | |
837 | } | |
838 | ||
839 | static inline void account_unplug(struct blk_io_trace *t, | |
840 | struct per_cpu_info *pci, int timer) | |
841 | { | |
842 | __account_unplug(&pci->io_stats, timer); | |
843 | ||
844 | if (per_process_stats) { | |
845 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
846 | ||
847 | __account_unplug(ios, timer); | |
848 | } | |
849 | } | |
850 | ||
f7bd1a9b JA |
851 | static void log_complete(struct per_dev_info *pdi, struct per_cpu_info *pci, |
852 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 853 | { |
f7bd1a9b | 854 | process_fmt(act, pci, t, log_track_complete(pdi, t), 0, NULL); |
ab197ca7 AB |
855 | } |
856 | ||
f7bd1a9b JA |
857 | static void log_insert(struct per_dev_info *pdi, struct per_cpu_info *pci, |
858 | struct blk_io_trace *t, char *act) | |
b6076a9b | 859 | { |
f7bd1a9b | 860 | process_fmt(act, pci, t, log_track_insert(pdi, t), 0, NULL); |
b6076a9b JA |
861 | } |
862 | ||
ab197ca7 AB |
863 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
864 | char *act) | |
865 | { | |
b6076a9b | 866 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 867 | } |
2e3e8ded | 868 | |
f7bd1a9b JA |
869 | static void log_issue(struct per_dev_info *pdi, struct per_cpu_info *pci, |
870 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 871 | { |
f7bd1a9b | 872 | process_fmt(act, pci, t, log_track_issue(pdi, t), 0, NULL); |
d0ca268b JA |
873 | } |
874 | ||
f7bd1a9b JA |
875 | static void log_merge(struct per_dev_info *pdi, struct per_cpu_info *pci, |
876 | struct blk_io_trace *t, char *act) | |
d0ca268b | 877 | { |
a01516de | 878 | if (act[0] == 'F') |
f7bd1a9b | 879 | log_track_frontmerge(pdi, t); |
2e3e8ded | 880 | |
ab197ca7 | 881 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
882 | } |
883 | ||
dfe34da1 | 884 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 885 | char *act) |
dfe34da1 | 886 | { |
ab197ca7 | 887 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
888 | } |
889 | ||
d5396421 | 890 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 891 | char *act) |
d0ca268b | 892 | { |
ab197ca7 | 893 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
894 | } |
895 | ||
ab197ca7 | 896 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 897 | char *act) |
67e14fdc | 898 | { |
ab197ca7 | 899 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
900 | } |
901 | ||
93f1c611 JA |
902 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
903 | char *act) | |
904 | { | |
905 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
906 | } | |
907 | ||
ab197ca7 | 908 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 909 | { |
ab197ca7 | 910 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 911 | |
ab197ca7 | 912 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
913 | } |
914 | ||
ff3a732c | 915 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 916 | { |
56f2af81 JA |
917 | int act = t->action & 0xffff; |
918 | ||
919 | switch (act) { | |
d0ca268b | 920 | case __BLK_TA_QUEUE: |
3639a11e | 921 | log_generic(pci, t, "Q"); |
d0ca268b JA |
922 | break; |
923 | case __BLK_TA_GETRQ: | |
3639a11e | 924 | log_generic(pci, t, "G"); |
d0ca268b JA |
925 | break; |
926 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 927 | log_generic(pci, t, "S"); |
d0ca268b JA |
928 | break; |
929 | case __BLK_TA_REQUEUE: | |
3639a11e | 930 | log_generic(pci, t, "R"); |
d0ca268b JA |
931 | break; |
932 | case __BLK_TA_ISSUE: | |
ab197ca7 | 933 | log_pc(pci, t, "D"); |
d0ca268b JA |
934 | break; |
935 | case __BLK_TA_COMPLETE: | |
3639a11e | 936 | log_pc(pci, t, "C"); |
d0ca268b | 937 | break; |
56f2af81 JA |
938 | case __BLK_TA_INSERT: |
939 | log_pc(pci, t, "I"); | |
940 | break; | |
d0ca268b | 941 | default: |
56f2af81 | 942 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 943 | break; |
d0ca268b | 944 | } |
d0ca268b JA |
945 | } |
946 | ||
f7bd1a9b JA |
947 | static void dump_trace_fs(struct blk_io_trace *t, struct per_dev_info *pdi, |
948 | struct per_cpu_info *pci) | |
d0ca268b JA |
949 | { |
950 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
7997c5b0 | 951 | int act = t->action & 0xffff; |
d0ca268b | 952 | |
7997c5b0 | 953 | switch (act) { |
d0ca268b | 954 | case __BLK_TA_QUEUE: |
b6076a9b | 955 | account_queue(t, pci, w); |
3639a11e | 956 | log_queue(pci, t, "Q"); |
d0ca268b | 957 | break; |
b6076a9b | 958 | case __BLK_TA_INSERT: |
f7bd1a9b | 959 | log_insert(pdi, pci, t, "I"); |
b6076a9b | 960 | break; |
d0ca268b | 961 | case __BLK_TA_BACKMERGE: |
152f6476 | 962 | account_m(t, pci, w); |
f7bd1a9b | 963 | log_merge(pdi, pci, t, "M"); |
d0ca268b JA |
964 | break; |
965 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 966 | account_m(t, pci, w); |
f7bd1a9b | 967 | log_merge(pdi, pci, t, "F"); |
d0ca268b JA |
968 | break; |
969 | case __BLK_TA_GETRQ: | |
f7bd1a9b | 970 | log_track_getrq(pdi, t); |
3639a11e | 971 | log_generic(pci, t, "G"); |
d0ca268b JA |
972 | break; |
973 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 974 | log_generic(pci, t, "S"); |
d0ca268b JA |
975 | break; |
976 | case __BLK_TA_REQUEUE: | |
152f6476 | 977 | account_c(t, pci, w, -t->bytes); |
3639a11e | 978 | log_queue(pci, t, "R"); |
d0ca268b JA |
979 | break; |
980 | case __BLK_TA_ISSUE: | |
b6076a9b | 981 | account_issue(t, pci, w); |
f7bd1a9b | 982 | log_issue(pdi, pci, t, "D"); |
d0ca268b JA |
983 | break; |
984 | case __BLK_TA_COMPLETE: | |
152f6476 | 985 | account_c(t, pci, w, t->bytes); |
f7bd1a9b | 986 | log_complete(pdi, pci, t, "C"); |
d0ca268b | 987 | break; |
88b1a526 | 988 | case __BLK_TA_PLUG: |
3639a11e | 989 | log_action(pci, t, "P"); |
88b1a526 | 990 | break; |
3639a11e | 991 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 992 | account_unplug(t, pci, 0); |
3639a11e JA |
993 | log_unplug(pci, t, "U"); |
994 | break; | |
995 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 996 | account_unplug(t, pci, 1); |
3639a11e | 997 | log_unplug(pci, t, "UT"); |
88b1a526 | 998 | break; |
93f1c611 JA |
999 | case __BLK_TA_SPLIT: |
1000 | log_split(pci, t, "X"); | |
1001 | break; | |
1002 | case __BLK_TA_BOUNCE: | |
1003 | log_generic(pci, t, "B"); | |
1004 | break; | |
d0ca268b JA |
1005 | default: |
1006 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 1007 | break; |
d0ca268b | 1008 | } |
d0ca268b JA |
1009 | } |
1010 | ||
ff3a732c JA |
1011 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
1012 | struct per_dev_info *pdi) | |
d0ca268b JA |
1013 | { |
1014 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 1015 | dump_trace_pc(t, pci); |
d0ca268b | 1016 | else |
f7bd1a9b | 1017 | dump_trace_fs(t, pdi, pci); |
87b72777 | 1018 | |
e7c9f3ff | 1019 | pdi->events++; |
d0ca268b JA |
1020 | } |
1021 | ||
152f6476 | 1022 | static void dump_io_stats(struct io_stats *ios, char *msg) |
5c017e4b | 1023 | { |
152f6476 JA |
1024 | fprintf(ofp, "%s\n", msg); |
1025 | ||
1026 | fprintf(ofp, " Reads Queued: %'8lu, %'8LuKiB\t", ios->qreads, ios->qread_kb); | |
1027 | fprintf(ofp, " Writes Queued: %'8lu, %'8LuKiB\n", ios->qwrites,ios->qwrite_kb); | |
0a6b8fc4 | 1028 | |
152f6476 JA |
1029 | fprintf(ofp, " Read Dispatches: %'8lu, %'8LuKiB\t", ios->ireads, ios->iread_kb); |
1030 | fprintf(ofp, " Write Dispatches: %'8lu, %'8LuKiB\n", ios->iwrites,ios->iwrite_kb); | |
1031 | fprintf(ofp, " Reads Completed: %'8lu, %'8LuKiB\t", ios->creads, ios->cread_kb); | |
1032 | fprintf(ofp, " Writes Completed: %'8lu, %'8LuKiB\n", ios->cwrites,ios->cwrite_kb); | |
1033 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); | |
152f6476 | 1034 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
06639b27 JA |
1035 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
1036 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
1037 | } |
1038 | ||
50adc0ba JA |
1039 | static void dump_wait_stats(struct per_process_info *ppi) |
1040 | { | |
b9d40d6f JA |
1041 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
1042 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
1043 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
1044 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
1045 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
1046 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
1047 | ||
1048 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
1049 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
1050 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
1051 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
1052 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
1053 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
1054 | } |
1055 | ||
886ecf0e JA |
1056 | static int ppi_name_compare(const void *p1, const void *p2) |
1057 | { | |
1058 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
1059 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
1060 | int res; | |
1061 | ||
1062 | res = strverscmp(ppi1->name, ppi2->name); | |
1063 | if (!res) | |
06e6f286 | 1064 | res = ppi1->pid > ppi2->pid; |
886ecf0e JA |
1065 | |
1066 | return res; | |
1067 | } | |
1068 | ||
1069 | static void sort_process_list(void) | |
1070 | { | |
1071 | struct per_process_info **ppis; | |
1072 | struct per_process_info *ppi; | |
1073 | int i = 0; | |
1074 | ||
1075 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1076 | ||
1077 | ppi = ppi_list; | |
1078 | while (ppi) { | |
06e6f286 | 1079 | ppis[i++] = ppi; |
886ecf0e JA |
1080 | ppi = ppi->list_next; |
1081 | } | |
1082 | ||
06e6f286 | 1083 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1084 | |
1085 | i = ppi_list_entries - 1; | |
1086 | ppi_list = NULL; | |
1087 | while (i >= 0) { | |
1088 | ppi = ppis[i]; | |
1089 | ||
1090 | ppi->list_next = ppi_list; | |
1091 | ppi_list = ppi; | |
1092 | i--; | |
1093 | } | |
50c38702 JA |
1094 | |
1095 | free(ppis); | |
886ecf0e JA |
1096 | } |
1097 | ||
152f6476 JA |
1098 | static void show_process_stats(void) |
1099 | { | |
1100 | struct per_process_info *ppi; | |
1101 | ||
886ecf0e JA |
1102 | sort_process_list(); |
1103 | ||
152f6476 JA |
1104 | ppi = ppi_list; |
1105 | while (ppi) { | |
ce8b6b4f JA |
1106 | char name[64]; |
1107 | ||
715d8021 | 1108 | if (ppi->more_than_one) |
bf0720af | 1109 | sprintf(name, "%s (%u, ...)", ppi->name, ppi->pid); |
715d8021 JA |
1110 | else |
1111 | sprintf(name, "%s (%u)", ppi->name, ppi->pid); | |
bf0720af | 1112 | |
ce8b6b4f | 1113 | dump_io_stats(&ppi->io_stats, name); |
50adc0ba | 1114 | dump_wait_stats(ppi); |
152f6476 JA |
1115 | ppi = ppi->list_next; |
1116 | } | |
1117 | ||
1118 | fprintf(ofp, "\n"); | |
1119 | } | |
1120 | ||
e7c9f3ff | 1121 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1122 | { |
e7c9f3ff NS |
1123 | struct per_dev_info *pdi; |
1124 | struct per_cpu_info *pci; | |
1125 | struct io_stats total, *ios; | |
1126 | int i, j, pci_events; | |
1127 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1128 | char name[32]; | |
1129 | ||
1130 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1131 | ||
1132 | memset(&total, 0, sizeof(total)); | |
1133 | pci_events = 0; | |
1134 | ||
1135 | if (i > 0) | |
1136 | fprintf(ofp, "\n"); | |
1137 | ||
1138 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1139 | if (!pci->nelems) | |
1140 | continue; | |
1141 | ||
1142 | ios = &pci->io_stats; | |
1143 | total.qreads += ios->qreads; | |
1144 | total.qwrites += ios->qwrites; | |
1145 | total.creads += ios->creads; | |
1146 | total.cwrites += ios->cwrites; | |
1147 | total.mreads += ios->mreads; | |
1148 | total.mwrites += ios->mwrites; | |
1149 | total.ireads += ios->ireads; | |
1150 | total.iwrites += ios->iwrites; | |
1151 | total.qread_kb += ios->qread_kb; | |
1152 | total.qwrite_kb += ios->qwrite_kb; | |
1153 | total.cread_kb += ios->cread_kb; | |
1154 | total.cwrite_kb += ios->cwrite_kb; | |
1155 | total.iread_kb += ios->iread_kb; | |
1156 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1157 | total.timer_unplugs += ios->timer_unplugs; |
1158 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1159 | |
1160 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1161 | j, get_dev_name(pdi, name, sizeof(name))); | |
1162 | dump_io_stats(ios, line); | |
1163 | pci_events++; | |
1164 | } | |
5c017e4b | 1165 | |
e7c9f3ff NS |
1166 | if (pci_events > 1) { |
1167 | fprintf(ofp, "\n"); | |
1168 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1169 | get_dev_name(pdi, name, sizeof(name))); | |
1170 | dump_io_stats(&total, line); | |
1171 | } | |
d0ca268b | 1172 | |
dcf0f7ed | 1173 | fprintf(ofp, "\nEvents (%s): %'Lu entries, %'lu skips\n", |
0aa8a62d | 1174 | get_dev_name(pdi, line, sizeof(line)), pdi->events, |
dcf0f7ed | 1175 | pdi->skips); |
e7c9f3ff | 1176 | } |
d0ca268b JA |
1177 | } |
1178 | ||
d36421e4 JA |
1179 | /* |
1180 | * struct trace and blktrace allocation cache, we do potentially | |
1181 | * millions of mallocs for these structures while only using at most | |
1182 | * a few thousand at the time | |
1183 | */ | |
1184 | static inline void t_free(struct trace *t) | |
1185 | { | |
3c8413cb | 1186 | if (t_alloc_cache < 1024) { |
1d24fc14 JA |
1187 | t->next = t_alloc_list; |
1188 | t_alloc_list = t; | |
3c8413cb JA |
1189 | t_alloc_cache++; |
1190 | } else | |
1191 | free(t); | |
d36421e4 JA |
1192 | } |
1193 | ||
1194 | static inline struct trace *t_alloc(void) | |
1195 | { | |
1196 | struct trace *t = t_alloc_list; | |
1197 | ||
1198 | if (t) { | |
1199 | t_alloc_list = t->next; | |
3c8413cb | 1200 | t_alloc_cache--; |
d36421e4 JA |
1201 | return t; |
1202 | } | |
1203 | ||
1204 | return malloc(sizeof(*t)); | |
1205 | } | |
1206 | ||
1207 | static inline void bit_free(struct blk_io_trace *bit) | |
1208 | { | |
3c8413cb | 1209 | if (bit_alloc_cache < 1024) { |
1d24fc14 JA |
1210 | /* |
1211 | * abuse a 64-bit field for a next pointer for the free item | |
1212 | */ | |
1213 | bit->time = (__u64) (unsigned long) bit_alloc_list; | |
1214 | bit_alloc_list = (struct blk_io_trace *) bit; | |
3c8413cb JA |
1215 | bit_alloc_cache++; |
1216 | } else | |
1217 | free(bit); | |
d36421e4 JA |
1218 | } |
1219 | ||
1220 | static inline struct blk_io_trace *bit_alloc(void) | |
1221 | { | |
1222 | struct blk_io_trace *bit = bit_alloc_list; | |
1223 | ||
1224 | if (bit) { | |
0c39425c NS |
1225 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ |
1226 | bit->time; | |
3c8413cb | 1227 | bit_alloc_cache--; |
d36421e4 JA |
1228 | return bit; |
1229 | } | |
1230 | ||
1231 | return malloc(sizeof(*bit)); | |
1232 | } | |
1233 | ||
4f0ae44f JA |
1234 | static void find_genesis(void) |
1235 | { | |
1236 | struct trace *t = trace_list; | |
1237 | ||
1238 | genesis_time = -1ULL; | |
1239 | while (t != NULL) { | |
1240 | if (t->bit->time < genesis_time) | |
1241 | genesis_time = t->bit->time; | |
1242 | ||
1243 | t = t->next; | |
1244 | } | |
1245 | } | |
1246 | ||
7f4d89e6 | 1247 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1248 | { |
7f4d89e6 JA |
1249 | if (bit->time < stopwatch_end && |
1250 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1251 | return 0; |
1252 | ||
1253 | return 1; | |
1254 | } | |
1255 | ||
53c68c88 JA |
1256 | /* |
1257 | * return youngest entry read | |
1258 | */ | |
1259 | static int sort_entries(unsigned long long *youngest) | |
4f0ae44f JA |
1260 | { |
1261 | struct trace *t; | |
4f0ae44f JA |
1262 | |
1263 | if (!genesis_time) | |
1264 | find_genesis(); | |
1265 | ||
d6222db8 | 1266 | *youngest = 0; |
4f0ae44f JA |
1267 | while ((t = trace_list) != NULL) { |
1268 | struct blk_io_trace *bit = t->bit; | |
1269 | ||
1270 | trace_list = t->next; | |
1271 | ||
7f4d89e6 | 1272 | bit->time -= genesis_time; |
4f0ae44f | 1273 | |
d6222db8 JA |
1274 | if (bit->time < *youngest || !*youngest) |
1275 | *youngest = bit->time; | |
1276 | ||
7f4d89e6 | 1277 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1278 | bit_free(bit); |
1279 | t_free(t); | |
1280 | continue; | |
1281 | } | |
1282 | ||
2a1b3424 | 1283 | if (trace_rb_insert_sort(t)) |
53c68c88 | 1284 | return -1; |
1c7c54aa JA |
1285 | |
1286 | if (bit->sequence < smallest_seq_read) | |
1287 | smallest_seq_read = bit->sequence; | |
4f0ae44f JA |
1288 | } |
1289 | ||
53c68c88 | 1290 | return 0; |
4f0ae44f JA |
1291 | } |
1292 | ||
1c24add6 JA |
1293 | static inline void __put_trace_last(struct per_dev_info *pdi, struct trace *t) |
1294 | { | |
1295 | rb_erase(&t->rb_node, &pdi->rb_last); | |
1296 | pdi->rb_last_entries--; | |
1297 | ||
1298 | bit_free(t->bit); | |
1299 | t_free(t); | |
1300 | } | |
1301 | ||
1302 | static void put_trace(struct per_dev_info *pdi, struct trace *t) | |
2a1b3424 JA |
1303 | { |
1304 | rb_erase(&t->rb_node, &rb_sort_root); | |
1305 | rb_sort_entries--; | |
1306 | ||
1307 | trace_rb_insert_last(pdi, t); | |
1308 | ||
1c24add6 | 1309 | if (pdi->rb_last_entries > rb_batch * pdi->nfiles) { |
2a1b3424 JA |
1310 | struct rb_node *n = rb_first(&pdi->rb_last); |
1311 | ||
1312 | t = rb_entry(n, struct trace, rb_node); | |
1c24add6 | 1313 | __put_trace_last(pdi, t); |
2a1b3424 JA |
1314 | } |
1315 | } | |
1316 | ||
0b07f23e | 1317 | static int check_sequence(struct per_dev_info *pdi, struct blk_io_trace *bit) |
2a1b3424 JA |
1318 | { |
1319 | unsigned long expected_sequence = pdi->last_sequence + 1; | |
1c7c54aa | 1320 | struct trace *t; |
d6222db8 JA |
1321 | |
1322 | /* | |
1323 | * first entry, always ok | |
1324 | */ | |
1325 | if (!expected_sequence) | |
1326 | return 0; | |
2a1b3424 JA |
1327 | |
1328 | if (bit->sequence == expected_sequence) | |
1329 | return 0; | |
1330 | ||
2a1b3424 | 1331 | /* |
1c7c54aa JA |
1332 | * we may not have seen that sequence yet. if we are not doing |
1333 | * the final run, break and wait for more entries. | |
1c24add6 | 1334 | */ |
1c7c54aa JA |
1335 | if (expected_sequence < smallest_seq_read) { |
1336 | t = trace_rb_find_last(pdi, expected_sequence); | |
1337 | if (!t) | |
1338 | goto skip; | |
2a1b3424 | 1339 | |
7d1c0411 | 1340 | __put_trace_last(pdi, t); |
2a1b3424 | 1341 | return 0; |
0b07f23e | 1342 | } else { |
1c7c54aa | 1343 | skip: |
7d1c0411 JA |
1344 | if (print_missing) { |
1345 | fprintf(stderr, "(%d,%d): skipping %lu -> %u\n", | |
1346 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
1347 | pdi->last_sequence, bit->sequence); | |
1348 | } | |
1c7c54aa JA |
1349 | pdi->skips++; |
1350 | return 0; | |
1351 | } | |
2a1b3424 JA |
1352 | } |
1353 | ||
a649216c | 1354 | static void show_entries_rb(int force) |
8fc0abbc | 1355 | { |
1f7afa72 JA |
1356 | struct per_dev_info *pdi = NULL; |
1357 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1358 | struct blk_io_trace *bit; |
3aabcd89 | 1359 | struct rb_node *n; |
8fc0abbc | 1360 | struct trace *t; |
1f7afa72 | 1361 | |
7d747d22 | 1362 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
dd90748f | 1363 | if (is_done() && !force && !pipeline) |
1f7afa72 | 1364 | break; |
8fc0abbc JA |
1365 | |
1366 | t = rb_entry(n, struct trace, rb_node); | |
1367 | bit = t->bit; | |
1368 | ||
f7bd1a9b | 1369 | if (!pdi || pdi->dev != bit->device) |
287fa3d6 | 1370 | pdi = get_dev_info(bit->device); |
1f7afa72 | 1371 | |
e7c9f3ff NS |
1372 | if (!pdi) { |
1373 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1374 | MAJOR(bit->device), MINOR(bit->device)); | |
1375 | break; | |
1376 | } | |
1f7afa72 | 1377 | |
0b07f23e JA |
1378 | if (!force) { |
1379 | if (check_sequence(pdi, bit)) | |
1380 | break; | |
cb2a1a62 | 1381 | |
0b07f23e JA |
1382 | if (bit->time > last_allowed_time) |
1383 | break; | |
1384 | } | |
8fc0abbc | 1385 | |
be925321 JA |
1386 | pdi->last_sequence = bit->sequence; |
1387 | ||
4f0ae44f | 1388 | check_time(pdi, bit); |
8fc0abbc | 1389 | |
4f0ae44f JA |
1390 | if (!pci || pci->cpu != bit->cpu) |
1391 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1392 | |
4f0ae44f | 1393 | dump_trace(bit, pci, pdi); |
87b72777 | 1394 | |
2a1b3424 | 1395 | put_trace(pdi, t); |
cb2a1a62 | 1396 | } |
8fc0abbc JA |
1397 | } |
1398 | ||
1f79c4a0 JA |
1399 | static int read_data(int fd, void *buffer, int bytes, int block) |
1400 | { | |
1401 | int ret, bytes_left, fl; | |
1402 | void *p; | |
1403 | ||
1404 | fl = fcntl(fd, F_GETFL); | |
1405 | ||
1406 | if (!block) | |
1407 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1408 | else | |
1409 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1410 | ||
1411 | bytes_left = bytes; | |
1412 | p = buffer; | |
1413 | while (bytes_left > 0) { | |
1414 | ret = read(fd, p, bytes_left); | |
1415 | if (!ret) | |
1416 | return 1; | |
1417 | else if (ret < 0) { | |
1418 | if (errno != EAGAIN) | |
1419 | perror("read"); | |
a649216c | 1420 | |
1f79c4a0 JA |
1421 | return -1; |
1422 | } else { | |
1423 | p += ret; | |
1424 | bytes_left -= ret; | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | return 0; | |
1429 | } | |
1430 | ||
a649216c | 1431 | static int read_events(int fd, int always_block) |
cb2a1a62 | 1432 | { |
287fa3d6 | 1433 | struct per_dev_info *pdi = NULL; |
e820abd7 | 1434 | unsigned int events = 0; |
7d747d22 JA |
1435 | |
1436 | while (!is_done() && events < rb_batch) { | |
1437 | struct blk_io_trace *bit; | |
1438 | struct trace *t; | |
1439 | int pdu_len; | |
1440 | __u32 magic; | |
1441 | ||
d36421e4 | 1442 | bit = bit_alloc(); |
cb2a1a62 | 1443 | |
a649216c | 1444 | if (read_data(fd, bit, sizeof(*bit), !events || always_block)) |
cb2a1a62 JA |
1445 | break; |
1446 | ||
7d747d22 JA |
1447 | magic = be32_to_cpu(bit->magic); |
1448 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
1449 | fprintf(stderr, "Bad magic %x\n", magic); | |
1450 | break; | |
1451 | } | |
1452 | ||
1453 | pdu_len = be16_to_cpu(bit->pdu_len); | |
1454 | if (pdu_len) { | |
1455 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1456 | ||
1457 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1)) | |
1458 | break; | |
1459 | ||
1460 | bit = ptr; | |
1461 | } | |
1462 | ||
d6222db8 JA |
1463 | trace_to_cpu(bit); |
1464 | ||
1465 | if (verify_trace(bit)) { | |
1466 | bit_free(bit); | |
1467 | continue; | |
1468 | } | |
1469 | ||
d36421e4 | 1470 | t = t_alloc(); |
cb2a1a62 JA |
1471 | memset(t, 0, sizeof(*t)); |
1472 | t->bit = bit; | |
1473 | ||
7d747d22 JA |
1474 | t->next = trace_list; |
1475 | trace_list = t; | |
1f7afa72 | 1476 | |
f7bd1a9b | 1477 | if (!pdi || pdi->dev != bit->device) |
287fa3d6 JA |
1478 | pdi = get_dev_info(bit->device); |
1479 | ||
1480 | if (bit->time > pdi->last_read_time) | |
1481 | pdi->last_read_time = bit->time; | |
1482 | ||
7d747d22 | 1483 | events++; |
cb2a1a62 JA |
1484 | } |
1485 | ||
7d747d22 | 1486 | return events; |
cb2a1a62 JA |
1487 | } |
1488 | ||
d5396421 | 1489 | static int do_file(void) |
d0ca268b | 1490 | { |
7d747d22 | 1491 | struct per_cpu_info *pci; |
73877e12 NS |
1492 | struct per_dev_info *pdi; |
1493 | int i, j, events, events_added; | |
d0ca268b | 1494 | |
7d747d22 JA |
1495 | /* |
1496 | * first prepare all files for reading | |
1497 | */ | |
e8741a4a | 1498 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1499 | pdi = &devices[i]; |
1500 | pdi->nfiles = 0; | |
d6222db8 | 1501 | pdi->last_sequence = -1; |
73877e12 | 1502 | |
74feaeb5 | 1503 | for (j = 0;; j++) { |
e7c9f3ff | 1504 | struct stat st; |
87b72777 | 1505 | |
e7c9f3ff NS |
1506 | pci = get_cpu_info(pdi, j); |
1507 | pci->cpu = j; | |
7d747d22 | 1508 | pci->fd = -1; |
d0ca268b | 1509 | |
e7c9f3ff | 1510 | snprintf(pci->fname, sizeof(pci->fname)-1, |
7d747d22 | 1511 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
1512 | if (stat(pci->fname, &st) < 0) |
1513 | break; | |
74feaeb5 AB |
1514 | if (st.st_size) { |
1515 | pci->fd = open(pci->fname, O_RDONLY); | |
1516 | if (pci->fd < 0) { | |
1517 | perror(pci->fname); | |
1518 | continue; | |
1519 | } | |
e7c9f3ff NS |
1520 | } |
1521 | ||
7d747d22 | 1522 | printf("Input file %s added\n", pci->fname); |
73877e12 | 1523 | pdi->nfiles++; |
d0ca268b | 1524 | } |
d5396421 JA |
1525 | } |
1526 | ||
7d747d22 JA |
1527 | /* |
1528 | * now loop over the files reading in the data | |
1529 | */ | |
412819ce | 1530 | do { |
53c68c88 JA |
1531 | unsigned long long youngest; |
1532 | ||
7d747d22 | 1533 | events_added = 0; |
287fa3d6 | 1534 | last_allowed_time = -1ULL; |
1c7c54aa | 1535 | smallest_seq_read = -1U; |
d5396421 | 1536 | |
7d747d22 | 1537 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1538 | pdi = &devices[i]; |
1539 | ||
1540 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 1541 | |
73877e12 | 1542 | pci = get_cpu_info(pdi, j); |
d5396421 | 1543 | |
7d747d22 JA |
1544 | if (pci->fd == -1) |
1545 | continue; | |
51128a28 | 1546 | |
a649216c | 1547 | events = read_events(pci->fd, 1); |
7d747d22 JA |
1548 | if (!events) { |
1549 | close(pci->fd); | |
1550 | pci->fd = -1; | |
1551 | continue; | |
1552 | } | |
d5396421 | 1553 | |
287fa3d6 JA |
1554 | if (pdi->last_read_time < last_allowed_time) |
1555 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 1556 | |
7d747d22 JA |
1557 | events_added += events; |
1558 | } | |
2ff323b0 | 1559 | } |
d5396421 | 1560 | |
53c68c88 JA |
1561 | if (sort_entries(&youngest)) |
1562 | break; | |
1563 | ||
1564 | if (youngest > stopwatch_end) | |
287fa3d6 JA |
1565 | break; |
1566 | ||
a649216c | 1567 | show_entries_rb(0); |
cb2a1a62 | 1568 | |
7d747d22 | 1569 | } while (events_added); |
d5396421 | 1570 | |
a649216c JA |
1571 | if (rb_sort_entries) |
1572 | show_entries_rb(1); | |
1573 | ||
7d747d22 | 1574 | return 0; |
412819ce | 1575 | } |
d5396421 | 1576 | |
412819ce JA |
1577 | static int do_stdin(void) |
1578 | { | |
53c68c88 | 1579 | unsigned long long youngest; |
0b07f23e | 1580 | int fd, events, loops; |
d5396421 | 1581 | |
be925321 | 1582 | last_allowed_time = -1ULL; |
1f79c4a0 | 1583 | fd = dup(STDIN_FILENO); |
0b07f23e JA |
1584 | if (fd == -1) { |
1585 | perror("dup stdin"); | |
1586 | return -1; | |
1587 | } | |
d5396421 | 1588 | |
0b07f23e JA |
1589 | loops = 0; |
1590 | while ((events = read_events(fd, 0)) != 0) { | |
412819ce | 1591 | |
0b07f23e JA |
1592 | smallest_seq_read = -1U; |
1593 | ||
53c68c88 JA |
1594 | if (sort_entries(&youngest)) |
1595 | break; | |
1596 | ||
1597 | if (youngest > stopwatch_end) | |
2ff323b0 JA |
1598 | break; |
1599 | ||
0b07f23e JA |
1600 | if (loops++ & 1) |
1601 | show_entries_rb(0); | |
1602 | } | |
d5396421 | 1603 | |
a649216c JA |
1604 | if (rb_sort_entries) |
1605 | show_entries_rb(1); | |
1606 | ||
d5396421 | 1607 | close(fd); |
d5396421 JA |
1608 | return 0; |
1609 | } | |
d0ca268b | 1610 | |
1f79c4a0 | 1611 | static void flush_output(void) |
412819ce | 1612 | { |
152f6476 | 1613 | fflush(ofp); |
412819ce JA |
1614 | } |
1615 | ||
e820abd7 | 1616 | static void handle_sigint(__attribute__((__unused__)) int sig) |
412819ce JA |
1617 | { |
1618 | done = 1; | |
1619 | flush_output(); | |
1620 | } | |
1621 | ||
46e6968b NS |
1622 | /* |
1623 | * Extract start and duration times from a string, allowing | |
1624 | * us to specify a time interval of interest within a trace. | |
1625 | * Format: "duration" (start is zero) or "start:duration". | |
1626 | */ | |
1627 | static int find_stopwatch_interval(char *string) | |
1628 | { | |
1629 | double value; | |
1630 | char *sp; | |
1631 | ||
1632 | value = strtod(string, &sp); | |
1633 | if (sp == string) { | |
1634 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
1635 | return 1; | |
1636 | } | |
1637 | if (*sp == ':') { | |
1638 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
1639 | string = sp + 1; | |
1640 | value = strtod(string, &sp); | |
1641 | if (sp == string || *sp != '\0') { | |
1642 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
1643 | string); | |
1644 | return 1; | |
1645 | } | |
1646 | } else if (*sp != '\0') { | |
1647 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
1648 | return 1; | |
1649 | } | |
1b928247 JA |
1650 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
1651 | if (stopwatch_end <= stopwatch_start) { | |
1652 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
1653 | stopwatch_start, stopwatch_end); | |
1654 | return 1; | |
1655 | } | |
1656 | ||
46e6968b NS |
1657 | return 0; |
1658 | } | |
1659 | ||
52724a0e JA |
1660 | static char usage_str[] = \ |
1661 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
1662 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
1663 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
1664 | "\t-o Output file. If not given, output is stdout\n" \ | |
1665 | "\t-b stdin read batching\n" \ | |
1666 | "\t-s Show per-program io statistics\n" \ | |
bf0720af | 1667 | "\t-n Hash processes by name, not pid\n" \ |
52724a0e JA |
1668 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
1669 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
1670 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
1671 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
1672 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
1673 | "\t -f Output format. Customize the output format. The format field\n" \ | |
1674 | "\t identifies can be found in the documentation\n" \ | |
1675 | "\t-F Format specification. Can be found in the documentation\n" \ | |
7d1c0411 | 1676 | "\t-m Print missing entries\n" \ |
52724a0e JA |
1677 | "\t-v Print program version info\n\n"; |
1678 | ||
1f79c4a0 JA |
1679 | static void usage(char *prog) |
1680 | { | |
52724a0e | 1681 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
1682 | } |
1683 | ||
d5396421 JA |
1684 | int main(int argc, char *argv[]) |
1685 | { | |
152f6476 | 1686 | char *ofp_buffer; |
a66877e6 | 1687 | int c, ret, mode; |
1e1c60f1 | 1688 | int per_device_and_cpu_stats = 1; |
d5396421 JA |
1689 | |
1690 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
1691 | switch (c) { | |
1692 | case 'i': | |
e7c9f3ff NS |
1693 | if (!strcmp(optarg, "-") && !pipeline) |
1694 | pipeline = 1; | |
1695 | else if (resize_devices(optarg) != 0) | |
1696 | return 1; | |
d5396421 JA |
1697 | break; |
1698 | case 'o': | |
66efebf8 | 1699 | output_name = optarg; |
d5396421 | 1700 | break; |
79f19470 JA |
1701 | case 'b': |
1702 | rb_batch = atoi(optarg); | |
1703 | if (rb_batch <= 0) | |
1704 | rb_batch = RB_BATCH_DEFAULT; | |
1705 | break; | |
152f6476 JA |
1706 | case 's': |
1707 | per_process_stats = 1; | |
1708 | break; | |
7997c5b0 JA |
1709 | case 't': |
1710 | track_ios = 1; | |
1711 | break; | |
1e1c60f1 NS |
1712 | case 'q': |
1713 | per_device_and_cpu_stats = 0; | |
1714 | break; | |
46e6968b NS |
1715 | case 'w': |
1716 | if (find_stopwatch_interval(optarg) != 0) | |
1717 | return 1; | |
1718 | break; | |
ab197ca7 AB |
1719 | case 'f': |
1720 | set_all_format_specs(optarg); | |
1721 | break; | |
1722 | case 'F': | |
1723 | if (add_format_spec(optarg) != 0) | |
1724 | return 1; | |
1725 | break; | |
bf0720af | 1726 | case 'n': |
715d8021 | 1727 | ppi_hash_by_pid = 0; |
bf0720af | 1728 | break; |
7d1c0411 JA |
1729 | case 'm': |
1730 | print_missing = 1; | |
1731 | break; | |
52724a0e JA |
1732 | case 'v': |
1733 | printf("%s version %s\n", argv[0], blkparse_version); | |
1734 | return 0; | |
d5396421 | 1735 | default: |
1f79c4a0 | 1736 | usage(argv[0]); |
d5396421 JA |
1737 | return 1; |
1738 | } | |
d0ca268b JA |
1739 | } |
1740 | ||
e7c9f3ff NS |
1741 | while (optind < argc) { |
1742 | if (!strcmp(argv[optind], "-") && !pipeline) | |
1743 | pipeline = 1; | |
1744 | else if (resize_devices(argv[optind]) != 0) | |
1745 | return 1; | |
1746 | optind++; | |
1747 | } | |
1748 | ||
1749 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 1750 | usage(argv[0]); |
d5396421 JA |
1751 | return 1; |
1752 | } | |
1753 | ||
7997c5b0 | 1754 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
412819ce JA |
1755 | |
1756 | signal(SIGINT, handle_sigint); | |
1757 | signal(SIGHUP, handle_sigint); | |
1758 | signal(SIGTERM, handle_sigint); | |
d5396421 | 1759 | |
d69db225 JA |
1760 | setlocale(LC_NUMERIC, "en_US"); |
1761 | ||
a66877e6 | 1762 | if (!output_name) { |
152f6476 | 1763 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
1764 | mode = _IOLBF; |
1765 | } else { | |
152f6476 JA |
1766 | char ofname[128]; |
1767 | ||
7a9690c0 | 1768 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 1769 | ofp = fopen(ofname, "w"); |
a66877e6 | 1770 | mode = _IOFBF; |
152f6476 JA |
1771 | } |
1772 | ||
1773 | if (!ofp) { | |
1774 | perror("fopen"); | |
1775 | return 1; | |
1776 | } | |
1777 | ||
1778 | ofp_buffer = malloc(4096); | |
a66877e6 | 1779 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
1780 | perror("setvbuf"); |
1781 | return 1; | |
1782 | } | |
1783 | ||
e7c9f3ff | 1784 | if (pipeline) |
d5396421 JA |
1785 | ret = do_stdin(); |
1786 | else | |
1787 | ret = do_file(); | |
1788 | ||
152f6476 JA |
1789 | if (per_process_stats) |
1790 | show_process_stats(); | |
1791 | ||
1e1c60f1 NS |
1792 | if (per_device_and_cpu_stats) |
1793 | show_device_and_cpu_stats(); | |
152f6476 | 1794 | |
412819ce | 1795 | flush_output(); |
d5396421 | 1796 | return ret; |
d0ca268b | 1797 | } |