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 NS |
40 | struct per_dev_info { |
41 | dev_t id; | |
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 | ||
73877e12 | 55 | int nfiles; |
e7c9f3ff NS |
56 | int ncpus; |
57 | struct per_cpu_info *cpus; | |
58 | }; | |
59 | ||
152f6476 JA |
60 | struct per_process_info { |
61 | char name[16]; | |
62 | __u32 pid; | |
63 | struct io_stats io_stats; | |
64 | struct per_process_info *hash_next, *list_next; | |
715d8021 | 65 | int more_than_one; |
50adc0ba JA |
66 | |
67 | /* | |
68 | * individual io stats | |
69 | */ | |
b9d40d6f JA |
70 | unsigned long long longest_allocation_wait[2]; |
71 | unsigned long long longest_dispatch_wait[2]; | |
72 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
73 | }; |
74 | ||
152f6476 | 75 | #define PPI_HASH_SHIFT (8) |
bf0720af JA |
76 | #define PPI_HASH_SIZE (1 << PPI_HASH_SHIFT) |
77 | #define PPI_HASH_MASK (PPI_HASH_SIZE - 1) | |
78 | static struct per_process_info *ppi_hash_table[PPI_HASH_SIZE]; | |
152f6476 | 79 | static struct per_process_info *ppi_list; |
886ecf0e | 80 | static int ppi_list_entries; |
152f6476 | 81 | |
bf0720af | 82 | #define S_OPTS "i:o:b:stqw:f:F:vn" |
d5396421 JA |
83 | static struct option l_opts[] = { |
84 | { | |
85 | .name = "input", | |
428683db | 86 | .has_arg = required_argument, |
d5396421 JA |
87 | .flag = NULL, |
88 | .val = 'i' | |
89 | }, | |
90 | { | |
91 | .name = "output", | |
428683db | 92 | .has_arg = required_argument, |
d5396421 JA |
93 | .flag = NULL, |
94 | .val = 'o' | |
95 | }, | |
79f19470 JA |
96 | { |
97 | .name = "batch", | |
428683db | 98 | .has_arg = required_argument, |
79f19470 JA |
99 | .flag = NULL, |
100 | .val = 'b' | |
101 | }, | |
152f6476 JA |
102 | { |
103 | .name = "per program stats", | |
428683db | 104 | .has_arg = no_argument, |
152f6476 JA |
105 | .flag = NULL, |
106 | .val = 's' | |
107 | }, | |
7997c5b0 JA |
108 | { |
109 | .name = "track ios", | |
428683db | 110 | .has_arg = no_argument, |
7997c5b0 JA |
111 | .flag = NULL, |
112 | .val = 't' | |
113 | }, | |
1e1c60f1 NS |
114 | { |
115 | .name = "quiet", | |
428683db | 116 | .has_arg = no_argument, |
1e1c60f1 NS |
117 | .flag = NULL, |
118 | .val = 'q' | |
119 | }, | |
46e6968b NS |
120 | { |
121 | .name = "stopwatch", | |
428683db | 122 | .has_arg = required_argument, |
46e6968b NS |
123 | .flag = NULL, |
124 | .val = 'w' | |
125 | }, | |
ab197ca7 AB |
126 | { |
127 | .name = "format", | |
428683db | 128 | .has_arg = required_argument, |
ab197ca7 AB |
129 | .flag = NULL, |
130 | .val = 'f' | |
131 | }, | |
132 | { | |
133 | .name = "format-spec", | |
428683db | 134 | .has_arg = required_argument, |
ab197ca7 AB |
135 | .flag = NULL, |
136 | .val = 'F' | |
137 | }, | |
bf0720af JA |
138 | { |
139 | .name = "hash by name", | |
140 | .has_arg = no_argument, | |
141 | .flag = NULL, | |
142 | .val = 'n' | |
143 | }, | |
52724a0e JA |
144 | { |
145 | .name = "version", | |
146 | .has_arg = no_argument, | |
147 | .flag = NULL, | |
148 | .val = 'v' | |
149 | }, | |
d5396421 JA |
150 | }; |
151 | ||
7997c5b0 JA |
152 | /* |
153 | * for sorting the displayed output | |
154 | */ | |
8fc0abbc JA |
155 | struct trace { |
156 | struct blk_io_trace *bit; | |
157 | struct rb_node rb_node; | |
cb2a1a62 | 158 | struct trace *next; |
8fc0abbc JA |
159 | }; |
160 | ||
cb2a1a62 | 161 | static struct rb_root rb_sort_root; |
a649216c JA |
162 | static unsigned long rb_sort_entries; |
163 | ||
cb2a1a62 JA |
164 | static struct rb_root rb_track_root; |
165 | ||
166 | static struct trace *trace_list; | |
167 | ||
d36421e4 JA |
168 | /* |
169 | * allocation cache | |
170 | */ | |
171 | static struct blk_io_trace *bit_alloc_list; | |
172 | static struct trace *t_alloc_list; | |
173 | ||
7997c5b0 JA |
174 | /* |
175 | * for tracking individual ios | |
176 | */ | |
177 | struct io_track { | |
178 | struct rb_node rb_node; | |
179 | ||
e7c9f3ff | 180 | dev_t device; |
7997c5b0 JA |
181 | __u64 sector; |
182 | __u32 pid; | |
bf0720af | 183 | char comm[16]; |
95c15013 | 184 | unsigned long long allocation_time; |
7997c5b0 JA |
185 | unsigned long long queue_time; |
186 | unsigned long long dispatch_time; | |
187 | unsigned long long completion_time; | |
188 | }; | |
189 | ||
e7c9f3ff NS |
190 | static int ndevices; |
191 | static struct per_dev_info *devices; | |
192 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
d0ca268b | 193 | |
71d5d4c9 | 194 | FILE *ofp = NULL; |
e7c9f3ff NS |
195 | static char *output_name; |
196 | ||
197 | static unsigned long long genesis_time; | |
287fa3d6 | 198 | static unsigned long long last_allowed_time; |
46e6968b NS |
199 | static unsigned long long stopwatch_start; /* start from zero by default */ |
200 | static unsigned long long stopwatch_end = ULONG_LONG_MAX; /* "infinity" */ | |
152f6476 JA |
201 | |
202 | static int per_process_stats; | |
7997c5b0 | 203 | static int track_ios; |
bf0720af | 204 | static int ppi_hash_by_pid = 1; |
d0ca268b | 205 | |
7d747d22 | 206 | #define RB_BATCH_DEFAULT (512) |
79f19470 JA |
207 | static int rb_batch = RB_BATCH_DEFAULT; |
208 | ||
e7c9f3ff NS |
209 | static int pipeline; |
210 | ||
412819ce JA |
211 | #define is_done() (*(volatile int *)(&done)) |
212 | static volatile int done; | |
213 | ||
bf0720af JA |
214 | #define JHASH_RANDOM (0x3af5f2ee) |
215 | ||
216 | static inline int ppi_hash_pid(__u32 pid) | |
217 | { | |
218 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
219 | } | |
220 | ||
221 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 222 | { |
bf0720af JA |
223 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
224 | } | |
225 | ||
226 | static inline int ppi_hash(struct per_process_info *ppi) | |
227 | { | |
228 | if (ppi_hash_by_pid) | |
229 | return ppi_hash_pid(ppi->pid); | |
230 | ||
bf0720af | 231 | return ppi_hash_name(ppi->name); |
152f6476 JA |
232 | } |
233 | ||
234 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
235 | { | |
bf0720af | 236 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 237 | |
bf0720af JA |
238 | ppi->hash_next = ppi_hash_table[hash_idx]; |
239 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
240 | } |
241 | ||
242 | static inline void add_process_to_list(struct per_process_info *ppi) | |
243 | { | |
244 | ppi->list_next = ppi_list; | |
245 | ppi_list = ppi; | |
886ecf0e | 246 | ppi_list_entries++; |
152f6476 JA |
247 | } |
248 | ||
bf0720af JA |
249 | static struct per_process_info *find_process_by_name(char *name) |
250 | { | |
251 | const int hash_idx = ppi_hash_name(name); | |
252 | struct per_process_info *ppi; | |
253 | ||
254 | ppi = ppi_hash_table[hash_idx]; | |
255 | while (ppi) { | |
256 | if (!strcmp(ppi->name, name)) | |
257 | return ppi; | |
258 | ||
259 | ppi = ppi->hash_next; | |
260 | } | |
261 | ||
262 | return NULL; | |
263 | } | |
264 | ||
152f6476 JA |
265 | static struct per_process_info *find_process_by_pid(__u32 pid) |
266 | { | |
bf0720af | 267 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
268 | struct per_process_info *ppi; |
269 | ||
bf0720af | 270 | ppi = ppi_hash_table[hash_idx]; |
152f6476 JA |
271 | while (ppi) { |
272 | if (ppi->pid == pid) | |
273 | return ppi; | |
274 | ||
275 | ppi = ppi->hash_next; | |
276 | } | |
277 | ||
278 | return NULL; | |
279 | } | |
280 | ||
bf0720af JA |
281 | static struct per_process_info *find_process(__u32 pid, char *name) |
282 | { | |
715d8021 JA |
283 | struct per_process_info *ppi; |
284 | ||
bf0720af JA |
285 | if (ppi_hash_by_pid) |
286 | return find_process_by_pid(pid); | |
287 | ||
715d8021 JA |
288 | ppi = find_process_by_name(name); |
289 | if (ppi && ppi->pid != pid) | |
290 | ppi->more_than_one = 1; | |
291 | ||
292 | return ppi; | |
bf0720af JA |
293 | } |
294 | ||
2a1b3424 | 295 | static inline int trace_rb_insert(struct trace *t, struct rb_root *root) |
7997c5b0 | 296 | { |
2a1b3424 | 297 | struct rb_node **p = &root->rb_node; |
7997c5b0 JA |
298 | struct rb_node *parent = NULL; |
299 | struct trace *__t; | |
300 | ||
301 | while (*p) { | |
302 | parent = *p; | |
2a1b3424 | 303 | |
7997c5b0 JA |
304 | __t = rb_entry(parent, struct trace, rb_node); |
305 | ||
dcf0f7ed | 306 | if (t->bit->time < __t->bit->time) |
e7c9f3ff NS |
307 | p = &(*p)->rb_left; |
308 | else if (t->bit->time > __t->bit->time) | |
309 | p = &(*p)->rb_right; | |
310 | else if (t->bit->device < __t->bit->device) | |
311 | p = &(*p)->rb_left; | |
312 | else if (t->bit->device > __t->bit->device) | |
313 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
314 | else if (t->bit->sequence < __t->bit->sequence) |
315 | p = &(*p)->rb_left; | |
316 | else if (t->bit->sequence > __t->bit->sequence) | |
317 | p = &(*p)->rb_right; | |
e7c9f3ff NS |
318 | else if (t->bit->device == __t->bit->device) { |
319 | fprintf(stderr, | |
320 | "sequence alias (%d) on device %d,%d!\n", | |
321 | t->bit->sequence, | |
322 | MAJOR(t->bit->device), MINOR(t->bit->device)); | |
7997c5b0 JA |
323 | return 1; |
324 | } | |
325 | } | |
326 | ||
327 | rb_link_node(&t->rb_node, parent, p); | |
2a1b3424 | 328 | rb_insert_color(&t->rb_node, root); |
7997c5b0 JA |
329 | return 0; |
330 | } | |
331 | ||
2a1b3424 | 332 | static inline int trace_rb_insert_sort(struct trace *t) |
e3556946 | 333 | { |
2a1b3424 JA |
334 | if (!trace_rb_insert(t, &rb_sort_root)) { |
335 | rb_sort_entries++; | |
336 | return 0; | |
337 | } | |
338 | ||
339 | return 1; | |
340 | } | |
341 | ||
342 | static inline int trace_rb_insert_last(struct per_dev_info *pdi,struct trace *t) | |
343 | { | |
344 | if (!trace_rb_insert(t, &pdi->rb_last)) { | |
345 | pdi->rb_last_entries++; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | return 1; | |
350 | } | |
351 | ||
352 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence, | |
353 | struct rb_root *root, int order) | |
354 | { | |
355 | struct rb_node *n = root->rb_node; | |
356 | struct rb_node *prev = NULL; | |
e3556946 JA |
357 | struct trace *__t; |
358 | ||
2a1b3424 JA |
359 | while (n) { |
360 | __t = rb_entry(n, struct trace, rb_node); | |
361 | prev = n; | |
e3556946 | 362 | |
0583b6a2 | 363 | if (device < __t->bit->device) |
2a1b3424 | 364 | n = n->rb_left; |
0583b6a2 | 365 | else if (device > __t->bit->device) |
2a1b3424 | 366 | n = n->rb_right; |
0583b6a2 | 367 | else if (sequence < __t->bit->sequence) |
2a1b3424 | 368 | n = n->rb_left; |
e3556946 | 369 | else if (sequence > __t->bit->sequence) |
2a1b3424 | 370 | n = n->rb_right; |
e3556946 JA |
371 | else |
372 | return __t; | |
373 | } | |
374 | ||
2a1b3424 JA |
375 | /* |
376 | * hack - the list may not be sequence ordered because some | |
377 | * events don't have sequence and time matched. so we end up | |
378 | * being a little off in the rb lookup here, because we don't | |
379 | * know the time we are looking for. compensate by browsing | |
380 | * a little ahead from the last entry to find the match | |
381 | */ | |
382 | if (order && prev) { | |
383 | int max = 5; | |
384 | ||
385 | while (((n = rb_next(prev)) != NULL) && max--) { | |
386 | __t = rb_entry(n, struct trace, rb_node); | |
387 | ||
388 | if (__t->bit->device == device && | |
389 | __t->bit->sequence == sequence) | |
390 | return __t; | |
391 | ||
392 | prev = n; | |
393 | } | |
394 | } | |
395 | ||
e3556946 JA |
396 | return NULL; |
397 | } | |
398 | ||
2a1b3424 JA |
399 | static inline struct trace *trace_rb_find_sort(dev_t dev, unsigned long seq) |
400 | { | |
401 | return trace_rb_find(dev, seq, &rb_sort_root, 1); | |
402 | } | |
403 | ||
404 | static inline struct trace *trace_rb_find_last(struct per_dev_info *pdi, | |
405 | unsigned long seq) | |
406 | { | |
407 | return trace_rb_find(pdi->id, seq, &pdi->rb_last, 0); | |
408 | } | |
409 | ||
7997c5b0 JA |
410 | static inline int track_rb_insert(struct io_track *iot) |
411 | { | |
412 | struct rb_node **p = &rb_track_root.rb_node; | |
413 | struct rb_node *parent = NULL; | |
414 | struct io_track *__iot; | |
415 | ||
416 | while (*p) { | |
417 | parent = *p; | |
7997c5b0 JA |
418 | __iot = rb_entry(parent, struct io_track, rb_node); |
419 | ||
e7c9f3ff NS |
420 | if (iot->device < __iot->device) |
421 | p = &(*p)->rb_left; | |
422 | else if (iot->device > __iot->device) | |
423 | p = &(*p)->rb_right; | |
424 | else if (iot->sector < __iot->sector) | |
7997c5b0 JA |
425 | p = &(*p)->rb_left; |
426 | else if (iot->sector > __iot->sector) | |
427 | p = &(*p)->rb_right; | |
428 | else { | |
e7c9f3ff | 429 | fprintf(stderr, |
ab197ca7 AB |
430 | "sector alias (%Lu) on device %d,%d!\n", |
431 | (unsigned long long) iot->sector, | |
e7c9f3ff | 432 | MAJOR(iot->device), MINOR(iot->device)); |
7997c5b0 JA |
433 | return 1; |
434 | } | |
435 | } | |
436 | ||
437 | rb_link_node(&iot->rb_node, parent, p); | |
438 | rb_insert_color(&iot->rb_node, &rb_track_root); | |
439 | return 0; | |
440 | } | |
441 | ||
e7c9f3ff | 442 | static struct io_track *__find_track(dev_t device, __u64 sector) |
7997c5b0 | 443 | { |
2a1b3424 | 444 | struct rb_node *n = rb_track_root.rb_node; |
7997c5b0 JA |
445 | struct io_track *__iot; |
446 | ||
2a1b3424 JA |
447 | while (n) { |
448 | __iot = rb_entry(n, struct io_track, rb_node); | |
7997c5b0 | 449 | |
e7c9f3ff | 450 | if (device < __iot->device) |
2a1b3424 | 451 | n = n->rb_left; |
e7c9f3ff | 452 | else if (device > __iot->device) |
2a1b3424 | 453 | n = n->rb_right; |
e7c9f3ff | 454 | else if (sector < __iot->sector) |
2a1b3424 | 455 | n = n->rb_left; |
7997c5b0 | 456 | else if (sector > __iot->sector) |
2a1b3424 | 457 | n = n->rb_right; |
7997c5b0 JA |
458 | else |
459 | return __iot; | |
460 | } | |
461 | ||
462 | return NULL; | |
463 | } | |
464 | ||
bf0720af JA |
465 | static struct io_track *find_track(__u32 pid, char *comm, dev_t device, |
466 | __u64 sector) | |
7997c5b0 | 467 | { |
916b5501 | 468 | struct io_track *iot; |
7997c5b0 | 469 | |
e7c9f3ff | 470 | iot = __find_track(device, sector); |
7997c5b0 JA |
471 | if (!iot) { |
472 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 473 | iot->pid = pid; |
bf0720af | 474 | memcpy(iot->comm, comm, sizeof(iot->comm)); |
e7c9f3ff | 475 | iot->device = device; |
7997c5b0 JA |
476 | iot->sector = sector; |
477 | track_rb_insert(iot); | |
478 | } | |
479 | ||
480 | return iot; | |
481 | } | |
482 | ||
a01516de | 483 | static void log_track_frontmerge(struct blk_io_trace *t) |
2e3e8ded JA |
484 | { |
485 | struct io_track *iot; | |
486 | ||
487 | if (!track_ios) | |
488 | return; | |
2e3e8ded | 489 | |
a01516de | 490 | iot = __find_track(t->device, t->sector + (t->bytes >> 9)); |
cb2a1a62 | 491 | if (!iot) { |
acd70d21 JA |
492 | fprintf(stderr, "merge not found for (%d,%d): %llu\n", |
493 | MAJOR(t->device), MINOR(t->device), | |
494 | t->sector + (t->bytes >> 9)); | |
cb2a1a62 | 495 | return; |
2e3e8ded | 496 | } |
cb2a1a62 JA |
497 | |
498 | rb_erase(&iot->rb_node, &rb_track_root); | |
a01516de | 499 | iot->sector -= t->bytes >> 9; |
cb2a1a62 | 500 | track_rb_insert(iot); |
2e3e8ded JA |
501 | } |
502 | ||
95c15013 | 503 | static void log_track_getrq(struct blk_io_trace *t) |
2e3e8ded JA |
504 | { |
505 | struct io_track *iot; | |
506 | ||
507 | if (!track_ios) | |
508 | return; | |
509 | ||
bf0720af | 510 | iot = find_track(t->pid, t->comm, t->device, t->sector); |
95c15013 JA |
511 | iot->allocation_time = t->time; |
512 | } | |
513 | ||
95c15013 | 514 | /* |
b6076a9b | 515 | * return time between rq allocation and insertion |
95c15013 | 516 | */ |
b6076a9b | 517 | static unsigned long long log_track_insert(struct blk_io_trace *t) |
95c15013 | 518 | { |
50adc0ba | 519 | unsigned long long elapsed; |
95c15013 JA |
520 | struct io_track *iot; |
521 | ||
522 | if (!track_ios) | |
523 | return -1; | |
524 | ||
bf0720af | 525 | iot = find_track(t->pid, t->comm, t->device, t->sector); |
2e3e8ded | 526 | iot->queue_time = t->time; |
acd70d21 JA |
527 | |
528 | if (!iot->allocation_time) | |
529 | return -1; | |
530 | ||
50adc0ba JA |
531 | elapsed = iot->queue_time - iot->allocation_time; |
532 | ||
533 | if (per_process_stats) { | |
bf0720af | 534 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 535 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 536 | |
b9d40d6f JA |
537 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
538 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
539 | } |
540 | ||
541 | return elapsed; | |
2e3e8ded JA |
542 | } |
543 | ||
544 | /* | |
545 | * return time between queue and issue | |
546 | */ | |
547 | static unsigned long long log_track_issue(struct blk_io_trace *t) | |
548 | { | |
50adc0ba | 549 | unsigned long long elapsed; |
2e3e8ded JA |
550 | struct io_track *iot; |
551 | ||
552 | if (!track_ios) | |
553 | return -1; | |
554 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
555 | return -1; | |
556 | ||
e7c9f3ff | 557 | iot = __find_track(t->device, t->sector); |
cb2a1a62 | 558 | if (!iot) { |
acd70d21 JA |
559 | fprintf(stderr, "issue not found for (%d,%d): %llu\n", |
560 | MAJOR(t->device), MINOR(t->device), t->sector); | |
2e3e8ded | 561 | return -1; |
cb2a1a62 | 562 | } |
2e3e8ded JA |
563 | |
564 | iot->dispatch_time = t->time; | |
50adc0ba JA |
565 | elapsed = iot->dispatch_time - iot->queue_time; |
566 | ||
567 | if (per_process_stats) { | |
bf0720af | 568 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 569 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 570 | |
b9d40d6f JA |
571 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
572 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
573 | } |
574 | ||
575 | return elapsed; | |
2e3e8ded JA |
576 | } |
577 | ||
578 | /* | |
579 | * return time between dispatch and complete | |
580 | */ | |
581 | static unsigned long long log_track_complete(struct blk_io_trace *t) | |
582 | { | |
583 | unsigned long long elapsed; | |
584 | struct io_track *iot; | |
585 | ||
586 | if (!track_ios) | |
587 | return -1; | |
588 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
589 | return -1; | |
590 | ||
e7c9f3ff | 591 | iot = __find_track(t->device, t->sector); |
cb2a1a62 | 592 | if (!iot) { |
acd70d21 JA |
593 | fprintf(stderr, "complete not found for (%d,%d): %llu\n", |
594 | MAJOR(t->device), MINOR(t->device), t->sector); | |
2e3e8ded | 595 | return -1; |
cb2a1a62 | 596 | } |
2e3e8ded JA |
597 | |
598 | iot->completion_time = t->time; | |
599 | elapsed = iot->completion_time - iot->dispatch_time; | |
600 | ||
50adc0ba | 601 | if (per_process_stats) { |
bf0720af | 602 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 603 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 604 | |
b9d40d6f JA |
605 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
606 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
607 | } |
608 | ||
2e3e8ded JA |
609 | /* |
610 | * kill the trace, we don't need it after completion | |
611 | */ | |
612 | rb_erase(&iot->rb_node, &rb_track_root); | |
613 | free(iot); | |
614 | ||
615 | return elapsed; | |
616 | } | |
617 | ||
618 | ||
152f6476 JA |
619 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
620 | { | |
bf0720af | 621 | struct per_process_info *ppi = find_process(pid, name); |
152f6476 JA |
622 | |
623 | if (!ppi) { | |
624 | ppi = malloc(sizeof(*ppi)); | |
625 | memset(ppi, 0, sizeof(*ppi)); | |
bf0720af | 626 | memcpy(ppi->name, name, 16); |
152f6476 JA |
627 | ppi->pid = pid; |
628 | add_process_to_hash(ppi); | |
629 | add_process_to_list(ppi); | |
630 | } | |
631 | ||
632 | return &ppi->io_stats; | |
633 | } | |
634 | ||
e7c9f3ff | 635 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
a718bd37 | 636 | { |
e7c9f3ff NS |
637 | struct per_cpu_info *cpus = pdi->cpus; |
638 | int ncpus = pdi->ncpus; | |
639 | int new_count = cpu + 1; | |
640 | int new_space, size; | |
a718bd37 NS |
641 | char *new_start; |
642 | ||
e7c9f3ff NS |
643 | size = new_count * sizeof(struct per_cpu_info); |
644 | cpus = realloc(cpus, size); | |
645 | if (!cpus) { | |
646 | char name[20]; | |
647 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
648 | get_dev_name(pdi, name, sizeof(name)), size); | |
a718bd37 NS |
649 | exit(1); |
650 | } | |
651 | ||
e7c9f3ff NS |
652 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); |
653 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
a718bd37 | 654 | memset(new_start, 0, new_space); |
e7c9f3ff NS |
655 | |
656 | pdi->ncpus = new_count; | |
657 | pdi->cpus = cpus; | |
658 | } | |
cb2a1a62 | 659 | |
e7c9f3ff NS |
660 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) |
661 | { | |
cb2a1a62 JA |
662 | struct per_cpu_info *pci; |
663 | ||
e7c9f3ff NS |
664 | if (cpu >= pdi->ncpus) |
665 | resize_cpu_info(pdi, cpu); | |
cb2a1a62 JA |
666 | |
667 | pci = &pdi->cpus[cpu]; | |
668 | pci->cpu = cpu; | |
669 | return pci; | |
a718bd37 NS |
670 | } |
671 | ||
e7c9f3ff NS |
672 | |
673 | static int resize_devices(char *name) | |
a718bd37 | 674 | { |
e7c9f3ff | 675 | int size = (ndevices + 1) * sizeof(struct per_dev_info); |
c499bf38 | 676 | |
e7c9f3ff NS |
677 | devices = realloc(devices, size); |
678 | if (!devices) { | |
679 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
680 | return 1; | |
681 | } | |
682 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
683 | devices[ndevices].name = name; | |
684 | ndevices++; | |
685 | return 0; | |
686 | } | |
a718bd37 | 687 | |
cb2a1a62 | 688 | static struct per_dev_info *get_dev_info(dev_t id) |
e7c9f3ff | 689 | { |
cb2a1a62 | 690 | struct per_dev_info *pdi; |
e7c9f3ff | 691 | int i; |
c499bf38 | 692 | |
7d747d22 JA |
693 | for (i = 0; i < ndevices; i++) { |
694 | if (!devices[i].id) | |
695 | devices[i].id = id; | |
e7c9f3ff NS |
696 | if (devices[i].id == id) |
697 | return &devices[i]; | |
7d747d22 | 698 | } |
cb2a1a62 | 699 | |
2a1b3424 | 700 | if (resize_devices(NULL)) |
e7c9f3ff | 701 | return NULL; |
cb2a1a62 JA |
702 | |
703 | pdi = &devices[ndevices - 1]; | |
704 | pdi->id = id; | |
0583b6a2 | 705 | pdi->last_sequence = 0; |
287fa3d6 | 706 | pdi->last_read_time = 0; |
2a1b3424 JA |
707 | memset(&pdi->rb_last, 0, sizeof(pdi->rb_last)); |
708 | pdi->rb_last_entries = 0; | |
cb2a1a62 | 709 | return pdi; |
a718bd37 NS |
710 | } |
711 | ||
e7c9f3ff NS |
712 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
713 | { | |
714 | if (pdi->name) | |
715 | snprintf(buffer, size, "%s", pdi->name); | |
716 | else | |
717 | snprintf(buffer, size, "%d,%d", MAJOR(pdi->id), MINOR(pdi->id)); | |
718 | return buffer; | |
719 | } | |
720 | ||
e7c9f3ff | 721 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
722 | { |
723 | unsigned long long this = bit->time; | |
e7c9f3ff | 724 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 725 | |
e7c9f3ff NS |
726 | pdi->backwards = (this < last) ? 'B' : ' '; |
727 | pdi->last_reported_time = this; | |
cfab07eb AB |
728 | } |
729 | ||
152f6476 JA |
730 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
731 | int rw) | |
d0ca268b JA |
732 | { |
733 | if (rw) { | |
152f6476 JA |
734 | ios->mwrites++; |
735 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 736 | } else { |
152f6476 JA |
737 | ios->mreads++; |
738 | ios->qread_kb += t->bytes >> 10; | |
739 | } | |
740 | } | |
741 | ||
742 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
743 | int rw) | |
744 | { | |
745 | __account_m(&pci->io_stats, t, rw); | |
746 | ||
747 | if (per_process_stats) { | |
748 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
749 | ||
750 | __account_m(ios, t, rw); | |
d0ca268b JA |
751 | } |
752 | } | |
753 | ||
b6076a9b JA |
754 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
755 | int rw) | |
d0ca268b JA |
756 | { |
757 | if (rw) { | |
152f6476 JA |
758 | ios->qwrites++; |
759 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 760 | } else { |
152f6476 JA |
761 | ios->qreads++; |
762 | ios->qread_kb += t->bytes >> 10; | |
763 | } | |
764 | } | |
765 | ||
b6076a9b JA |
766 | static inline void account_queue(struct blk_io_trace *t, |
767 | struct per_cpu_info *pci, int rw) | |
152f6476 | 768 | { |
b6076a9b | 769 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
770 | |
771 | if (per_process_stats) { | |
772 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
773 | ||
b6076a9b | 774 | __account_queue(ios, t, rw); |
d0ca268b JA |
775 | } |
776 | } | |
777 | ||
152f6476 | 778 | static inline void __account_c(struct io_stats *ios, int rw, unsigned int bytes) |
d0ca268b JA |
779 | { |
780 | if (rw) { | |
152f6476 JA |
781 | ios->cwrites++; |
782 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 783 | } else { |
152f6476 JA |
784 | ios->creads++; |
785 | ios->cread_kb += bytes >> 10; | |
786 | } | |
787 | } | |
788 | ||
789 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
790 | int rw, int bytes) | |
791 | { | |
792 | __account_c(&pci->io_stats, rw, bytes); | |
793 | ||
794 | if (per_process_stats) { | |
795 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
796 | ||
797 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
798 | } |
799 | } | |
800 | ||
b6076a9b JA |
801 | static inline void __account_issue(struct io_stats *ios, int rw, |
802 | unsigned int bytes) | |
afd2d7ad | 803 | { |
804 | if (rw) { | |
152f6476 JA |
805 | ios->iwrites++; |
806 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 807 | } else { |
152f6476 JA |
808 | ios->ireads++; |
809 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 810 | } |
811 | } | |
812 | ||
b6076a9b JA |
813 | static inline void account_issue(struct blk_io_trace *t, |
814 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 815 | { |
b6076a9b | 816 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
817 | |
818 | if (per_process_stats) { | |
819 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 820 | |
b6076a9b | 821 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
822 | } |
823 | } | |
824 | ||
06639b27 JA |
825 | static inline void __account_unplug(struct io_stats *ios, int timer) |
826 | { | |
827 | if (timer) | |
828 | ios->timer_unplugs++; | |
829 | else | |
830 | ios->io_unplugs++; | |
831 | } | |
832 | ||
833 | static inline void account_unplug(struct blk_io_trace *t, | |
834 | struct per_cpu_info *pci, int timer) | |
835 | { | |
836 | __account_unplug(&pci->io_stats, timer); | |
837 | ||
838 | if (per_process_stats) { | |
839 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
840 | ||
841 | __account_unplug(ios, timer); | |
842 | } | |
843 | } | |
844 | ||
ab197ca7 AB |
845 | static void log_complete(struct per_cpu_info *pci, struct blk_io_trace *t, |
846 | char *act) | |
847 | { | |
848 | process_fmt(act, pci, t, log_track_complete(t), 0, NULL); | |
849 | } | |
850 | ||
b6076a9b JA |
851 | static void log_insert(struct per_cpu_info *pci, struct blk_io_trace *t, |
852 | char *act) | |
853 | { | |
854 | process_fmt(act, pci, t, log_track_insert(t), 0, NULL); | |
855 | } | |
856 | ||
ab197ca7 AB |
857 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
858 | char *act) | |
859 | { | |
b6076a9b | 860 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 861 | } |
2e3e8ded | 862 | |
ab197ca7 AB |
863 | static void log_issue(struct per_cpu_info *pci, struct blk_io_trace *t, |
864 | char *act) | |
865 | { | |
866 | process_fmt(act, pci, t, log_track_issue(t), 0, NULL); | |
d0ca268b JA |
867 | } |
868 | ||
d5396421 | 869 | static void log_merge(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 870 | char *act) |
d0ca268b | 871 | { |
a01516de JA |
872 | if (act[0] == 'F') |
873 | log_track_frontmerge(t); | |
2e3e8ded | 874 | |
ab197ca7 | 875 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
876 | } |
877 | ||
dfe34da1 | 878 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 879 | char *act) |
dfe34da1 | 880 | { |
ab197ca7 | 881 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
882 | } |
883 | ||
d5396421 | 884 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 885 | char *act) |
d0ca268b | 886 | { |
ab197ca7 | 887 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
888 | } |
889 | ||
ab197ca7 | 890 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 891 | char *act) |
67e14fdc | 892 | { |
ab197ca7 | 893 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
894 | } |
895 | ||
93f1c611 JA |
896 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
897 | char *act) | |
898 | { | |
899 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
900 | } | |
901 | ||
ab197ca7 | 902 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 903 | { |
ab197ca7 | 904 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 905 | |
ab197ca7 | 906 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
907 | } |
908 | ||
ff3a732c | 909 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 910 | { |
56f2af81 JA |
911 | int act = t->action & 0xffff; |
912 | ||
913 | switch (act) { | |
d0ca268b | 914 | case __BLK_TA_QUEUE: |
3639a11e | 915 | log_generic(pci, t, "Q"); |
d0ca268b JA |
916 | break; |
917 | case __BLK_TA_GETRQ: | |
3639a11e | 918 | log_generic(pci, t, "G"); |
d0ca268b JA |
919 | break; |
920 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 921 | log_generic(pci, t, "S"); |
d0ca268b JA |
922 | break; |
923 | case __BLK_TA_REQUEUE: | |
3639a11e | 924 | log_generic(pci, t, "R"); |
d0ca268b JA |
925 | break; |
926 | case __BLK_TA_ISSUE: | |
ab197ca7 | 927 | log_pc(pci, t, "D"); |
d0ca268b JA |
928 | break; |
929 | case __BLK_TA_COMPLETE: | |
3639a11e | 930 | log_pc(pci, t, "C"); |
d0ca268b | 931 | break; |
56f2af81 JA |
932 | case __BLK_TA_INSERT: |
933 | log_pc(pci, t, "I"); | |
934 | break; | |
d0ca268b | 935 | default: |
56f2af81 | 936 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 937 | break; |
d0ca268b | 938 | } |
d0ca268b JA |
939 | } |
940 | ||
d5396421 | 941 | static void dump_trace_fs(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b JA |
942 | { |
943 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
7997c5b0 | 944 | int act = t->action & 0xffff; |
d0ca268b | 945 | |
7997c5b0 | 946 | switch (act) { |
d0ca268b | 947 | case __BLK_TA_QUEUE: |
b6076a9b | 948 | account_queue(t, pci, w); |
3639a11e | 949 | log_queue(pci, t, "Q"); |
d0ca268b | 950 | break; |
b6076a9b JA |
951 | case __BLK_TA_INSERT: |
952 | log_insert(pci, t, "I"); | |
953 | break; | |
d0ca268b | 954 | case __BLK_TA_BACKMERGE: |
152f6476 | 955 | account_m(t, pci, w); |
3639a11e | 956 | log_merge(pci, t, "M"); |
d0ca268b JA |
957 | break; |
958 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 959 | account_m(t, pci, w); |
3639a11e | 960 | log_merge(pci, t, "F"); |
d0ca268b JA |
961 | break; |
962 | case __BLK_TA_GETRQ: | |
95c15013 | 963 | log_track_getrq(t); |
3639a11e | 964 | log_generic(pci, t, "G"); |
d0ca268b JA |
965 | break; |
966 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 967 | log_generic(pci, t, "S"); |
d0ca268b JA |
968 | break; |
969 | case __BLK_TA_REQUEUE: | |
152f6476 | 970 | account_c(t, pci, w, -t->bytes); |
3639a11e | 971 | log_queue(pci, t, "R"); |
d0ca268b JA |
972 | break; |
973 | case __BLK_TA_ISSUE: | |
b6076a9b | 974 | account_issue(t, pci, w); |
3639a11e | 975 | log_issue(pci, t, "D"); |
d0ca268b JA |
976 | break; |
977 | case __BLK_TA_COMPLETE: | |
152f6476 | 978 | account_c(t, pci, w, t->bytes); |
3639a11e | 979 | log_complete(pci, t, "C"); |
d0ca268b | 980 | break; |
88b1a526 | 981 | case __BLK_TA_PLUG: |
3639a11e | 982 | log_action(pci, t, "P"); |
88b1a526 | 983 | break; |
3639a11e | 984 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 985 | account_unplug(t, pci, 0); |
3639a11e JA |
986 | log_unplug(pci, t, "U"); |
987 | break; | |
988 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 989 | account_unplug(t, pci, 1); |
3639a11e | 990 | log_unplug(pci, t, "UT"); |
88b1a526 | 991 | break; |
93f1c611 JA |
992 | case __BLK_TA_SPLIT: |
993 | log_split(pci, t, "X"); | |
994 | break; | |
995 | case __BLK_TA_BOUNCE: | |
996 | log_generic(pci, t, "B"); | |
997 | break; | |
d0ca268b JA |
998 | default: |
999 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 1000 | break; |
d0ca268b | 1001 | } |
d0ca268b JA |
1002 | } |
1003 | ||
ff3a732c JA |
1004 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
1005 | struct per_dev_info *pdi) | |
d0ca268b JA |
1006 | { |
1007 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 1008 | dump_trace_pc(t, pci); |
d0ca268b | 1009 | else |
d5396421 | 1010 | dump_trace_fs(t, pci); |
87b72777 | 1011 | |
e7c9f3ff | 1012 | pdi->events++; |
d0ca268b JA |
1013 | } |
1014 | ||
152f6476 | 1015 | static void dump_io_stats(struct io_stats *ios, char *msg) |
5c017e4b | 1016 | { |
152f6476 JA |
1017 | fprintf(ofp, "%s\n", msg); |
1018 | ||
1019 | fprintf(ofp, " Reads Queued: %'8lu, %'8LuKiB\t", ios->qreads, ios->qread_kb); | |
1020 | fprintf(ofp, " Writes Queued: %'8lu, %'8LuKiB\n", ios->qwrites,ios->qwrite_kb); | |
0a6b8fc4 | 1021 | |
152f6476 JA |
1022 | fprintf(ofp, " Read Dispatches: %'8lu, %'8LuKiB\t", ios->ireads, ios->iread_kb); |
1023 | fprintf(ofp, " Write Dispatches: %'8lu, %'8LuKiB\n", ios->iwrites,ios->iwrite_kb); | |
1024 | fprintf(ofp, " Reads Completed: %'8lu, %'8LuKiB\t", ios->creads, ios->cread_kb); | |
1025 | fprintf(ofp, " Writes Completed: %'8lu, %'8LuKiB\n", ios->cwrites,ios->cwrite_kb); | |
1026 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); | |
152f6476 | 1027 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
06639b27 JA |
1028 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
1029 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
1030 | } |
1031 | ||
50adc0ba JA |
1032 | static void dump_wait_stats(struct per_process_info *ppi) |
1033 | { | |
b9d40d6f JA |
1034 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
1035 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
1036 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
1037 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
1038 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
1039 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
1040 | ||
1041 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
1042 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
1043 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
1044 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
1045 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
1046 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
1047 | } |
1048 | ||
886ecf0e JA |
1049 | static int ppi_name_compare(const void *p1, const void *p2) |
1050 | { | |
1051 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
1052 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
1053 | int res; | |
1054 | ||
1055 | res = strverscmp(ppi1->name, ppi2->name); | |
1056 | if (!res) | |
06e6f286 | 1057 | res = ppi1->pid > ppi2->pid; |
886ecf0e JA |
1058 | |
1059 | return res; | |
1060 | } | |
1061 | ||
1062 | static void sort_process_list(void) | |
1063 | { | |
1064 | struct per_process_info **ppis; | |
1065 | struct per_process_info *ppi; | |
1066 | int i = 0; | |
1067 | ||
1068 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1069 | ||
1070 | ppi = ppi_list; | |
1071 | while (ppi) { | |
06e6f286 | 1072 | ppis[i++] = ppi; |
886ecf0e JA |
1073 | ppi = ppi->list_next; |
1074 | } | |
1075 | ||
06e6f286 | 1076 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1077 | |
1078 | i = ppi_list_entries - 1; | |
1079 | ppi_list = NULL; | |
1080 | while (i >= 0) { | |
1081 | ppi = ppis[i]; | |
1082 | ||
1083 | ppi->list_next = ppi_list; | |
1084 | ppi_list = ppi; | |
1085 | i--; | |
1086 | } | |
50c38702 JA |
1087 | |
1088 | free(ppis); | |
886ecf0e JA |
1089 | } |
1090 | ||
152f6476 JA |
1091 | static void show_process_stats(void) |
1092 | { | |
1093 | struct per_process_info *ppi; | |
1094 | ||
886ecf0e JA |
1095 | sort_process_list(); |
1096 | ||
152f6476 JA |
1097 | ppi = ppi_list; |
1098 | while (ppi) { | |
ce8b6b4f JA |
1099 | char name[64]; |
1100 | ||
715d8021 | 1101 | if (ppi->more_than_one) |
bf0720af | 1102 | sprintf(name, "%s (%u, ...)", ppi->name, ppi->pid); |
715d8021 JA |
1103 | else |
1104 | sprintf(name, "%s (%u)", ppi->name, ppi->pid); | |
bf0720af | 1105 | |
ce8b6b4f | 1106 | dump_io_stats(&ppi->io_stats, name); |
50adc0ba | 1107 | dump_wait_stats(ppi); |
152f6476 JA |
1108 | ppi = ppi->list_next; |
1109 | } | |
1110 | ||
1111 | fprintf(ofp, "\n"); | |
1112 | } | |
1113 | ||
e7c9f3ff | 1114 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1115 | { |
e7c9f3ff NS |
1116 | struct per_dev_info *pdi; |
1117 | struct per_cpu_info *pci; | |
1118 | struct io_stats total, *ios; | |
1119 | int i, j, pci_events; | |
1120 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1121 | char name[32]; | |
1122 | ||
1123 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1124 | ||
1125 | memset(&total, 0, sizeof(total)); | |
1126 | pci_events = 0; | |
1127 | ||
1128 | if (i > 0) | |
1129 | fprintf(ofp, "\n"); | |
1130 | ||
1131 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1132 | if (!pci->nelems) | |
1133 | continue; | |
1134 | ||
1135 | ios = &pci->io_stats; | |
1136 | total.qreads += ios->qreads; | |
1137 | total.qwrites += ios->qwrites; | |
1138 | total.creads += ios->creads; | |
1139 | total.cwrites += ios->cwrites; | |
1140 | total.mreads += ios->mreads; | |
1141 | total.mwrites += ios->mwrites; | |
1142 | total.ireads += ios->ireads; | |
1143 | total.iwrites += ios->iwrites; | |
1144 | total.qread_kb += ios->qread_kb; | |
1145 | total.qwrite_kb += ios->qwrite_kb; | |
1146 | total.cread_kb += ios->cread_kb; | |
1147 | total.cwrite_kb += ios->cwrite_kb; | |
1148 | total.iread_kb += ios->iread_kb; | |
1149 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1150 | total.timer_unplugs += ios->timer_unplugs; |
1151 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1152 | |
1153 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1154 | j, get_dev_name(pdi, name, sizeof(name))); | |
1155 | dump_io_stats(ios, line); | |
1156 | pci_events++; | |
1157 | } | |
5c017e4b | 1158 | |
e7c9f3ff NS |
1159 | if (pci_events > 1) { |
1160 | fprintf(ofp, "\n"); | |
1161 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1162 | get_dev_name(pdi, name, sizeof(name))); | |
1163 | dump_io_stats(&total, line); | |
1164 | } | |
d0ca268b | 1165 | |
dcf0f7ed | 1166 | fprintf(ofp, "\nEvents (%s): %'Lu entries, %'lu skips\n", |
0aa8a62d | 1167 | get_dev_name(pdi, line, sizeof(line)), pdi->events, |
dcf0f7ed | 1168 | pdi->skips); |
e7c9f3ff | 1169 | } |
d0ca268b JA |
1170 | } |
1171 | ||
d36421e4 JA |
1172 | /* |
1173 | * struct trace and blktrace allocation cache, we do potentially | |
1174 | * millions of mallocs for these structures while only using at most | |
1175 | * a few thousand at the time | |
1176 | */ | |
1177 | static inline void t_free(struct trace *t) | |
1178 | { | |
1179 | t->next = t_alloc_list; | |
1180 | t_alloc_list = t; | |
1181 | } | |
1182 | ||
1183 | static inline struct trace *t_alloc(void) | |
1184 | { | |
1185 | struct trace *t = t_alloc_list; | |
1186 | ||
1187 | if (t) { | |
1188 | t_alloc_list = t->next; | |
1189 | return t; | |
1190 | } | |
1191 | ||
1192 | return malloc(sizeof(*t)); | |
1193 | } | |
1194 | ||
1195 | static inline void bit_free(struct blk_io_trace *bit) | |
1196 | { | |
1197 | /* | |
1198 | * abuse a 64-bit field for a next pointer for the free item | |
1199 | */ | |
0c39425c | 1200 | bit->time = (__u64) (unsigned long) bit_alloc_list; |
d36421e4 JA |
1201 | bit_alloc_list = (struct blk_io_trace *) bit; |
1202 | } | |
1203 | ||
1204 | static inline struct blk_io_trace *bit_alloc(void) | |
1205 | { | |
1206 | struct blk_io_trace *bit = bit_alloc_list; | |
1207 | ||
1208 | if (bit) { | |
0c39425c NS |
1209 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ |
1210 | bit->time; | |
d36421e4 JA |
1211 | return bit; |
1212 | } | |
1213 | ||
1214 | return malloc(sizeof(*bit)); | |
1215 | } | |
1216 | ||
4f0ae44f JA |
1217 | static void find_genesis(void) |
1218 | { | |
1219 | struct trace *t = trace_list; | |
1220 | ||
1221 | genesis_time = -1ULL; | |
1222 | while (t != NULL) { | |
1223 | if (t->bit->time < genesis_time) | |
1224 | genesis_time = t->bit->time; | |
1225 | ||
1226 | t = t->next; | |
1227 | } | |
1228 | } | |
1229 | ||
7f4d89e6 | 1230 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1231 | { |
7f4d89e6 JA |
1232 | if (bit->time < stopwatch_end && |
1233 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1234 | return 0; |
1235 | ||
1236 | return 1; | |
1237 | } | |
1238 | ||
53c68c88 JA |
1239 | /* |
1240 | * return youngest entry read | |
1241 | */ | |
1242 | static int sort_entries(unsigned long long *youngest) | |
4f0ae44f JA |
1243 | { |
1244 | struct trace *t; | |
4f0ae44f JA |
1245 | |
1246 | if (!genesis_time) | |
1247 | find_genesis(); | |
1248 | ||
53c68c88 | 1249 | *youngest = -1ULL; |
4f0ae44f JA |
1250 | while ((t = trace_list) != NULL) { |
1251 | struct blk_io_trace *bit = t->bit; | |
1252 | ||
1253 | trace_list = t->next; | |
1254 | ||
1255 | if (verify_trace(bit)) | |
1256 | continue; | |
1257 | ||
7f4d89e6 | 1258 | bit->time -= genesis_time; |
4f0ae44f | 1259 | |
7f4d89e6 | 1260 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1261 | bit_free(bit); |
1262 | t_free(t); | |
1263 | continue; | |
1264 | } | |
1265 | ||
2a1b3424 | 1266 | if (trace_rb_insert_sort(t)) |
53c68c88 | 1267 | return -1; |
4f0ae44f | 1268 | |
53c68c88 JA |
1269 | if (bit->time < *youngest) |
1270 | *youngest = bit->time; | |
4f0ae44f JA |
1271 | } |
1272 | ||
53c68c88 | 1273 | return 0; |
4f0ae44f JA |
1274 | } |
1275 | ||
2a1b3424 JA |
1276 | static inline void put_trace(struct per_dev_info *pdi, struct trace *t) |
1277 | { | |
1278 | rb_erase(&t->rb_node, &rb_sort_root); | |
1279 | rb_sort_entries--; | |
1280 | ||
1281 | trace_rb_insert_last(pdi, t); | |
1282 | ||
1283 | if (pdi->rb_last_entries > 1024) { | |
1284 | struct rb_node *n = rb_first(&pdi->rb_last); | |
1285 | ||
1286 | t = rb_entry(n, struct trace, rb_node); | |
1287 | rb_erase(n, &pdi->rb_last); | |
1288 | pdi->rb_last_entries--; | |
1289 | ||
1290 | bit_free(t->bit); | |
1291 | t_free(t); | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | static int check_sequence(struct per_dev_info *pdi, struct blk_io_trace *bit, | |
1296 | int force) | |
1297 | { | |
1298 | unsigned long expected_sequence = pdi->last_sequence + 1; | |
1299 | struct trace *t; | |
1300 | ||
1301 | if (bit->sequence == expected_sequence) | |
1302 | return 0; | |
1303 | ||
1304 | if (bit->sequence < expected_sequence && | |
1305 | bit->time > pdi->last_reported_time) | |
1306 | return 0; | |
1307 | ||
1308 | /* | |
1309 | * the wanted sequence is really there, continue | |
1310 | * because this means that the log time is earlier | |
1311 | * on the trace we have now */ | |
1312 | t = trace_rb_find_sort(pdi->id, expected_sequence); | |
1313 | if (t) | |
1314 | return 0; | |
1315 | ||
1316 | t = trace_rb_find_last(pdi, expected_sequence); | |
1317 | if (t) | |
1318 | return 0; | |
1319 | ||
1320 | /* | |
1321 | * unless this is the last run, break and wait for more entries | |
1322 | */ | |
1323 | if (!force) | |
1324 | return 1; | |
1325 | ||
1326 | fprintf(stderr, "(%d,%d): skipping %lu -> %u\n", MAJOR(pdi->id), | |
1327 | MINOR(pdi->id), pdi->last_sequence, bit->sequence); | |
1328 | pdi->skips++; | |
1329 | return 0; | |
1330 | } | |
1331 | ||
a649216c | 1332 | static void show_entries_rb(int force) |
8fc0abbc | 1333 | { |
1f7afa72 JA |
1334 | struct per_dev_info *pdi = NULL; |
1335 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1336 | struct blk_io_trace *bit; |
3aabcd89 | 1337 | struct rb_node *n; |
8fc0abbc | 1338 | struct trace *t; |
1f7afa72 | 1339 | |
7d747d22 | 1340 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
1f7afa72 JA |
1341 | if (done) |
1342 | break; | |
8fc0abbc JA |
1343 | |
1344 | t = rb_entry(n, struct trace, rb_node); | |
1345 | bit = t->bit; | |
1346 | ||
287fa3d6 JA |
1347 | if (!pdi || pdi->id != bit->device) |
1348 | pdi = get_dev_info(bit->device); | |
1f7afa72 | 1349 | |
e7c9f3ff NS |
1350 | if (!pdi) { |
1351 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1352 | MAJOR(bit->device), MINOR(bit->device)); | |
1353 | break; | |
1354 | } | |
1f7afa72 JA |
1355 | |
1356 | if (bit->cpu > pdi->ncpus) { | |
e7c9f3ff | 1357 | fprintf(stderr, "Unknown CPU ID? (%d, device %d,%d)\n", |
7d747d22 JA |
1358 | bit->cpu, MAJOR(bit->device), |
1359 | MINOR(bit->device)); | |
87b72777 | 1360 | break; |
8fc0abbc JA |
1361 | } |
1362 | ||
2a1b3424 JA |
1363 | if (check_sequence(pdi, bit, force)) |
1364 | break; | |
cb2a1a62 | 1365 | |
a649216c | 1366 | if (!force && bit->time > last_allowed_time) |
46e6968b | 1367 | break; |
8fc0abbc | 1368 | |
be925321 JA |
1369 | pdi->last_sequence = bit->sequence; |
1370 | ||
4f0ae44f | 1371 | check_time(pdi, bit); |
8fc0abbc | 1372 | |
4f0ae44f JA |
1373 | if (!pci || pci->cpu != bit->cpu) |
1374 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1375 | |
4f0ae44f | 1376 | dump_trace(bit, pci, pdi); |
87b72777 | 1377 | |
2a1b3424 | 1378 | put_trace(pdi, t); |
cb2a1a62 | 1379 | } |
8fc0abbc JA |
1380 | } |
1381 | ||
1f79c4a0 JA |
1382 | static int read_data(int fd, void *buffer, int bytes, int block) |
1383 | { | |
1384 | int ret, bytes_left, fl; | |
1385 | void *p; | |
1386 | ||
1387 | fl = fcntl(fd, F_GETFL); | |
1388 | ||
1389 | if (!block) | |
1390 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1391 | else | |
1392 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1393 | ||
1394 | bytes_left = bytes; | |
1395 | p = buffer; | |
1396 | while (bytes_left > 0) { | |
1397 | ret = read(fd, p, bytes_left); | |
1398 | if (!ret) | |
1399 | return 1; | |
1400 | else if (ret < 0) { | |
1401 | if (errno != EAGAIN) | |
1402 | perror("read"); | |
a649216c | 1403 | |
1f79c4a0 JA |
1404 | return -1; |
1405 | } else { | |
1406 | p += ret; | |
1407 | bytes_left -= ret; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | return 0; | |
1412 | } | |
1413 | ||
a649216c | 1414 | static int read_events(int fd, int always_block) |
cb2a1a62 | 1415 | { |
287fa3d6 | 1416 | struct per_dev_info *pdi = NULL; |
7d747d22 JA |
1417 | int events = 0; |
1418 | ||
1419 | while (!is_done() && events < rb_batch) { | |
1420 | struct blk_io_trace *bit; | |
1421 | struct trace *t; | |
1422 | int pdu_len; | |
1423 | __u32 magic; | |
1424 | ||
d36421e4 | 1425 | bit = bit_alloc(); |
cb2a1a62 | 1426 | |
a649216c | 1427 | if (read_data(fd, bit, sizeof(*bit), !events || always_block)) |
cb2a1a62 JA |
1428 | break; |
1429 | ||
7d747d22 JA |
1430 | magic = be32_to_cpu(bit->magic); |
1431 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
1432 | fprintf(stderr, "Bad magic %x\n", magic); | |
1433 | break; | |
1434 | } | |
1435 | ||
1436 | pdu_len = be16_to_cpu(bit->pdu_len); | |
1437 | if (pdu_len) { | |
1438 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1439 | ||
1440 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1)) | |
1441 | break; | |
1442 | ||
1443 | bit = ptr; | |
1444 | } | |
1445 | ||
d36421e4 | 1446 | t = t_alloc(); |
cb2a1a62 JA |
1447 | memset(t, 0, sizeof(*t)); |
1448 | t->bit = bit; | |
1449 | ||
f1327cc5 | 1450 | trace_to_cpu(bit); |
4f0ae44f | 1451 | |
7d747d22 JA |
1452 | t->next = trace_list; |
1453 | trace_list = t; | |
1f7afa72 | 1454 | |
287fa3d6 JA |
1455 | if (!pdi || pdi->id != bit->device) |
1456 | pdi = get_dev_info(bit->device); | |
1457 | ||
1458 | if (bit->time > pdi->last_read_time) | |
1459 | pdi->last_read_time = bit->time; | |
1460 | ||
7d747d22 | 1461 | events++; |
cb2a1a62 JA |
1462 | } |
1463 | ||
7d747d22 | 1464 | return events; |
cb2a1a62 JA |
1465 | } |
1466 | ||
d5396421 | 1467 | static int do_file(void) |
d0ca268b | 1468 | { |
7d747d22 | 1469 | struct per_cpu_info *pci; |
73877e12 NS |
1470 | struct per_dev_info *pdi; |
1471 | int i, j, events, events_added; | |
d0ca268b | 1472 | |
7d747d22 JA |
1473 | /* |
1474 | * first prepare all files for reading | |
1475 | */ | |
e8741a4a | 1476 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1477 | pdi = &devices[i]; |
1478 | pdi->nfiles = 0; | |
0583b6a2 | 1479 | pdi->last_sequence = 0; |
73877e12 | 1480 | |
74feaeb5 | 1481 | for (j = 0;; j++) { |
e7c9f3ff | 1482 | struct stat st; |
87b72777 | 1483 | |
e7c9f3ff NS |
1484 | pci = get_cpu_info(pdi, j); |
1485 | pci->cpu = j; | |
7d747d22 | 1486 | pci->fd = -1; |
d0ca268b | 1487 | |
e7c9f3ff | 1488 | snprintf(pci->fname, sizeof(pci->fname)-1, |
7d747d22 | 1489 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
1490 | if (stat(pci->fname, &st) < 0) |
1491 | break; | |
74feaeb5 AB |
1492 | if (st.st_size) { |
1493 | pci->fd = open(pci->fname, O_RDONLY); | |
1494 | if (pci->fd < 0) { | |
1495 | perror(pci->fname); | |
1496 | continue; | |
1497 | } | |
e7c9f3ff NS |
1498 | } |
1499 | ||
7d747d22 | 1500 | printf("Input file %s added\n", pci->fname); |
73877e12 | 1501 | pdi->nfiles++; |
d0ca268b | 1502 | } |
d5396421 JA |
1503 | } |
1504 | ||
7d747d22 JA |
1505 | /* |
1506 | * now loop over the files reading in the data | |
1507 | */ | |
412819ce | 1508 | do { |
53c68c88 JA |
1509 | unsigned long long youngest; |
1510 | ||
7d747d22 | 1511 | events_added = 0; |
287fa3d6 | 1512 | last_allowed_time = -1ULL; |
d5396421 | 1513 | |
7d747d22 | 1514 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1515 | pdi = &devices[i]; |
1516 | ||
1517 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 1518 | |
73877e12 | 1519 | pci = get_cpu_info(pdi, j); |
d5396421 | 1520 | |
7d747d22 JA |
1521 | if (pci->fd == -1) |
1522 | continue; | |
51128a28 | 1523 | |
a649216c | 1524 | events = read_events(pci->fd, 1); |
7d747d22 JA |
1525 | if (!events) { |
1526 | close(pci->fd); | |
1527 | pci->fd = -1; | |
1528 | continue; | |
1529 | } | |
d5396421 | 1530 | |
287fa3d6 JA |
1531 | if (pdi->last_read_time < last_allowed_time) |
1532 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 1533 | |
7d747d22 JA |
1534 | events_added += events; |
1535 | } | |
2ff323b0 | 1536 | } |
d5396421 | 1537 | |
53c68c88 JA |
1538 | if (sort_entries(&youngest)) |
1539 | break; | |
1540 | ||
1541 | if (youngest > stopwatch_end) | |
287fa3d6 JA |
1542 | break; |
1543 | ||
a649216c | 1544 | show_entries_rb(0); |
cb2a1a62 | 1545 | |
7d747d22 | 1546 | } while (events_added); |
d5396421 | 1547 | |
a649216c JA |
1548 | if (rb_sort_entries) |
1549 | show_entries_rb(1); | |
1550 | ||
7d747d22 | 1551 | return 0; |
412819ce | 1552 | } |
d5396421 | 1553 | |
412819ce JA |
1554 | static int do_stdin(void) |
1555 | { | |
53c68c88 | 1556 | unsigned long long youngest; |
412819ce | 1557 | int fd; |
d5396421 | 1558 | |
be925321 | 1559 | last_allowed_time = -1ULL; |
1f79c4a0 | 1560 | fd = dup(STDIN_FILENO); |
412819ce JA |
1561 | do { |
1562 | int events; | |
d5396421 | 1563 | |
a649216c | 1564 | events = read_events(fd, 0); |
412819ce JA |
1565 | if (!events) |
1566 | break; | |
1567 | ||
53c68c88 JA |
1568 | if (sort_entries(&youngest)) |
1569 | break; | |
1570 | ||
1571 | if (youngest > stopwatch_end) | |
2ff323b0 JA |
1572 | break; |
1573 | ||
a649216c | 1574 | show_entries_rb(0); |
d5396421 JA |
1575 | } while (1); |
1576 | ||
a649216c JA |
1577 | if (rb_sort_entries) |
1578 | show_entries_rb(1); | |
1579 | ||
d5396421 | 1580 | close(fd); |
d5396421 JA |
1581 | return 0; |
1582 | } | |
d0ca268b | 1583 | |
1f79c4a0 | 1584 | static void flush_output(void) |
412819ce | 1585 | { |
152f6476 | 1586 | fflush(ofp); |
412819ce JA |
1587 | } |
1588 | ||
1f79c4a0 | 1589 | static void handle_sigint(int sig) |
412819ce JA |
1590 | { |
1591 | done = 1; | |
1592 | flush_output(); | |
1593 | } | |
1594 | ||
46e6968b NS |
1595 | /* |
1596 | * Extract start and duration times from a string, allowing | |
1597 | * us to specify a time interval of interest within a trace. | |
1598 | * Format: "duration" (start is zero) or "start:duration". | |
1599 | */ | |
1600 | static int find_stopwatch_interval(char *string) | |
1601 | { | |
1602 | double value; | |
1603 | char *sp; | |
1604 | ||
1605 | value = strtod(string, &sp); | |
1606 | if (sp == string) { | |
1607 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
1608 | return 1; | |
1609 | } | |
1610 | if (*sp == ':') { | |
1611 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
1612 | string = sp + 1; | |
1613 | value = strtod(string, &sp); | |
1614 | if (sp == string || *sp != '\0') { | |
1615 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
1616 | string); | |
1617 | return 1; | |
1618 | } | |
1619 | } else if (*sp != '\0') { | |
1620 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
1621 | return 1; | |
1622 | } | |
1b928247 JA |
1623 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
1624 | if (stopwatch_end <= stopwatch_start) { | |
1625 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
1626 | stopwatch_start, stopwatch_end); | |
1627 | return 1; | |
1628 | } | |
1629 | ||
46e6968b NS |
1630 | return 0; |
1631 | } | |
1632 | ||
52724a0e JA |
1633 | static char usage_str[] = \ |
1634 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
1635 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
1636 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
1637 | "\t-o Output file. If not given, output is stdout\n" \ | |
1638 | "\t-b stdin read batching\n" \ | |
1639 | "\t-s Show per-program io statistics\n" \ | |
bf0720af | 1640 | "\t-n Hash processes by name, not pid\n" \ |
52724a0e JA |
1641 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
1642 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
1643 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
1644 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
1645 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
1646 | "\t -f Output format. Customize the output format. The format field\n" \ | |
1647 | "\t identifies can be found in the documentation\n" \ | |
1648 | "\t-F Format specification. Can be found in the documentation\n" \ | |
1649 | "\t-v Print program version info\n\n"; | |
1650 | ||
1f79c4a0 JA |
1651 | static void usage(char *prog) |
1652 | { | |
52724a0e | 1653 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
1654 | } |
1655 | ||
d5396421 JA |
1656 | int main(int argc, char *argv[]) |
1657 | { | |
152f6476 | 1658 | char *ofp_buffer; |
a66877e6 | 1659 | int c, ret, mode; |
1e1c60f1 | 1660 | int per_device_and_cpu_stats = 1; |
d5396421 JA |
1661 | |
1662 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
1663 | switch (c) { | |
1664 | case 'i': | |
e7c9f3ff NS |
1665 | if (!strcmp(optarg, "-") && !pipeline) |
1666 | pipeline = 1; | |
1667 | else if (resize_devices(optarg) != 0) | |
1668 | return 1; | |
d5396421 JA |
1669 | break; |
1670 | case 'o': | |
66efebf8 | 1671 | output_name = optarg; |
d5396421 | 1672 | break; |
79f19470 JA |
1673 | case 'b': |
1674 | rb_batch = atoi(optarg); | |
1675 | if (rb_batch <= 0) | |
1676 | rb_batch = RB_BATCH_DEFAULT; | |
1677 | break; | |
152f6476 JA |
1678 | case 's': |
1679 | per_process_stats = 1; | |
1680 | break; | |
7997c5b0 JA |
1681 | case 't': |
1682 | track_ios = 1; | |
1683 | break; | |
1e1c60f1 NS |
1684 | case 'q': |
1685 | per_device_and_cpu_stats = 0; | |
1686 | break; | |
46e6968b NS |
1687 | case 'w': |
1688 | if (find_stopwatch_interval(optarg) != 0) | |
1689 | return 1; | |
1690 | break; | |
ab197ca7 AB |
1691 | case 'f': |
1692 | set_all_format_specs(optarg); | |
1693 | break; | |
1694 | case 'F': | |
1695 | if (add_format_spec(optarg) != 0) | |
1696 | return 1; | |
1697 | break; | |
bf0720af | 1698 | case 'n': |
715d8021 | 1699 | ppi_hash_by_pid = 0; |
bf0720af | 1700 | break; |
52724a0e JA |
1701 | case 'v': |
1702 | printf("%s version %s\n", argv[0], blkparse_version); | |
1703 | return 0; | |
d5396421 | 1704 | default: |
1f79c4a0 | 1705 | usage(argv[0]); |
d5396421 JA |
1706 | return 1; |
1707 | } | |
d0ca268b JA |
1708 | } |
1709 | ||
e7c9f3ff NS |
1710 | while (optind < argc) { |
1711 | if (!strcmp(argv[optind], "-") && !pipeline) | |
1712 | pipeline = 1; | |
1713 | else if (resize_devices(argv[optind]) != 0) | |
1714 | return 1; | |
1715 | optind++; | |
1716 | } | |
1717 | ||
1718 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 1719 | usage(argv[0]); |
d5396421 JA |
1720 | return 1; |
1721 | } | |
1722 | ||
7997c5b0 JA |
1723 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
1724 | memset(&rb_track_root, 0, sizeof(rb_track_root)); | |
412819ce JA |
1725 | |
1726 | signal(SIGINT, handle_sigint); | |
1727 | signal(SIGHUP, handle_sigint); | |
1728 | signal(SIGTERM, handle_sigint); | |
d5396421 | 1729 | |
d69db225 JA |
1730 | setlocale(LC_NUMERIC, "en_US"); |
1731 | ||
a66877e6 | 1732 | if (!output_name) { |
152f6476 | 1733 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
1734 | mode = _IOLBF; |
1735 | } else { | |
152f6476 JA |
1736 | char ofname[128]; |
1737 | ||
7a9690c0 | 1738 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 1739 | ofp = fopen(ofname, "w"); |
a66877e6 | 1740 | mode = _IOFBF; |
152f6476 JA |
1741 | } |
1742 | ||
1743 | if (!ofp) { | |
1744 | perror("fopen"); | |
1745 | return 1; | |
1746 | } | |
1747 | ||
1748 | ofp_buffer = malloc(4096); | |
a66877e6 | 1749 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
1750 | perror("setvbuf"); |
1751 | return 1; | |
1752 | } | |
1753 | ||
e7c9f3ff | 1754 | if (pipeline) |
d5396421 JA |
1755 | ret = do_stdin(); |
1756 | else | |
1757 | ret = do_file(); | |
1758 | ||
152f6476 JA |
1759 | if (per_process_stats) |
1760 | show_process_stats(); | |
1761 | ||
1e1c60f1 NS |
1762 | if (per_device_and_cpu_stats) |
1763 | show_device_and_cpu_stats(); | |
152f6476 | 1764 | |
412819ce | 1765 | flush_output(); |
d5396421 | 1766 | return ret; |
d0ca268b | 1767 | } |