Commit | Line | Data |
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40bafa33 JA |
1 | #include <stdio.h> |
2 | #include <stdio.h> | |
3 | #include <unistd.h> | |
4 | #include <inttypes.h> | |
5 | #include <assert.h> | |
6 | ||
7 | #include "../io_ddir.h" | |
8 | #include "../flist.h" | |
9 | #include "../hash.h" | |
10 | #include "../fifo.h" | |
11 | #include "../blktrace_api.h" | |
12 | #include "../os/os.h" | |
13 | #include "../log.h" | |
14 | #include "../lib/linux-dev-lookup.h" | |
15 | ||
16 | #define TRACE_FIFO_SIZE 8192 | |
17 | ||
18 | static unsigned int rt_threshold = 1000000; | |
19 | static unsigned int ios_threshold = 10; | |
8fc46b4d JA |
20 | static unsigned int rate_threshold; |
21 | static unsigned int set_rate; | |
85fcdac8 | 22 | static unsigned int max_depth = 256; |
40bafa33 | 23 | static int output_ascii = 1; |
35661615 | 24 | static char *filename; |
40bafa33 JA |
25 | |
26 | struct bs { | |
27 | unsigned int bs; | |
28 | unsigned int nr; | |
29 | int merges; | |
30 | }; | |
31 | ||
32 | struct trace_file { | |
33 | char *name; | |
34 | int major, minor; | |
35 | }; | |
36 | ||
37 | struct btrace_out { | |
38 | unsigned long ios[DDIR_RWDIR_CNT]; | |
40bafa33 JA |
39 | unsigned long merges[DDIR_RWDIR_CNT]; |
40 | ||
41 | uint64_t last_end[DDIR_RWDIR_CNT]; | |
42 | uint64_t seq[DDIR_RWDIR_CNT]; | |
43 | ||
44 | struct bs *bs[DDIR_RWDIR_CNT]; | |
45 | unsigned int nr_bs[DDIR_RWDIR_CNT]; | |
46 | ||
47 | int inflight; | |
48 | unsigned int depth; | |
85fcdac8 JA |
49 | int depth_disabled; |
50 | int complete_seen; | |
51 | ||
8fc46b4d JA |
52 | uint64_t first_ttime[DDIR_RWDIR_CNT]; |
53 | uint64_t last_ttime[DDIR_RWDIR_CNT]; | |
54 | uint64_t kb[DDIR_RWDIR_CNT]; | |
40bafa33 | 55 | |
40bafa33 JA |
56 | uint64_t start_delay; |
57 | }; | |
58 | ||
59 | struct btrace_pid { | |
60 | struct flist_head hash_list; | |
61 | struct flist_head pid_list; | |
62 | pid_t pid; | |
65ff9cd5 JA |
63 | |
64 | struct trace_file *files; | |
65 | int nr_files; | |
66 | unsigned int last_major, last_minor; | |
67 | ||
40bafa33 JA |
68 | struct btrace_out o; |
69 | }; | |
70 | ||
71 | struct inflight { | |
72 | struct flist_head list; | |
73 | struct btrace_pid *p; | |
74 | uint64_t end_sector; | |
75 | }; | |
76 | ||
77 | #define PID_HASH_BITS 10 | |
78 | #define PID_HASH_SIZE (1U << PID_HASH_BITS) | |
79 | ||
80 | static struct flist_head pid_hash[PID_HASH_SIZE]; | |
81 | static FLIST_HEAD(pid_list); | |
82 | ||
17bf0853 JA |
83 | #define INFLIGHT_HASH_BITS 8 |
84 | #define INFLIGHT_HASH_SIZE (1U << INFLIGHT_HASH_BITS) | |
85 | static struct flist_head inflight_hash[INFLIGHT_HASH_SIZE]; | |
40bafa33 JA |
86 | |
87 | static uint64_t first_ttime = -1ULL; | |
88 | ||
89 | static struct inflight *inflight_find(uint64_t sector) | |
90 | { | |
17bf0853 | 91 | struct flist_head *inflight_list; |
40bafa33 JA |
92 | struct flist_head *e; |
93 | ||
17bf0853 JA |
94 | inflight_list = &inflight_hash[hash_long(sector, INFLIGHT_HASH_BITS)]; |
95 | ||
96 | flist_for_each(e, inflight_list) { | |
40bafa33 JA |
97 | struct inflight *i = flist_entry(e, struct inflight, list); |
98 | ||
99 | if (i->end_sector == sector) | |
100 | return i; | |
101 | } | |
102 | ||
103 | return NULL; | |
104 | } | |
105 | ||
106 | static void inflight_remove(struct inflight *i) | |
107 | { | |
108 | struct btrace_out *o = &i->p->o; | |
109 | ||
110 | o->inflight--; | |
111 | assert(o->inflight >= 0); | |
112 | flist_del(&i->list); | |
113 | free(i); | |
114 | } | |
115 | ||
17bf0853 | 116 | static void __inflight_add(struct inflight *i) |
40bafa33 | 117 | { |
17bf0853 JA |
118 | struct flist_head *list; |
119 | ||
120 | list = &inflight_hash[hash_long(i->end_sector, INFLIGHT_HASH_BITS)]; | |
121 | flist_add_tail(&i->list, list); | |
40bafa33 JA |
122 | } |
123 | ||
124 | static void inflight_add(struct btrace_pid *p, uint64_t sector, uint32_t len) | |
125 | { | |
126 | struct btrace_out *o = &p->o; | |
127 | struct inflight *i; | |
128 | ||
129 | i = calloc(1, sizeof(*i)); | |
130 | i->p = p; | |
131 | o->inflight++; | |
85fcdac8 JA |
132 | if (!o->depth_disabled) { |
133 | o->depth = max((int) o->depth, o->inflight); | |
134 | if (o->depth >= max_depth && !o->complete_seen) { | |
135 | o->depth_disabled = 1; | |
136 | o->depth = max_depth; | |
137 | } | |
138 | } | |
40bafa33 | 139 | i->end_sector = sector + (len >> 9); |
17bf0853 JA |
140 | __inflight_add(i); |
141 | } | |
142 | ||
143 | static void inflight_merge(struct inflight *i, int rw, unsigned int size) | |
144 | { | |
145 | i->p->o.merges[rw]++; | |
146 | if (size) { | |
147 | i->end_sector += (size >> 9); | |
148 | flist_del(&i->list); | |
149 | __inflight_add(i); | |
150 | } | |
40bafa33 JA |
151 | } |
152 | ||
153 | /* | |
154 | * fifo refill frontend, to avoid reading data in trace sized bites | |
155 | */ | |
156 | static int refill_fifo(struct fifo *fifo, int fd) | |
157 | { | |
158 | char buf[TRACE_FIFO_SIZE]; | |
159 | unsigned int total; | |
160 | int ret; | |
161 | ||
162 | total = sizeof(buf); | |
163 | if (total > fifo_room(fifo)) | |
164 | total = fifo_room(fifo); | |
165 | ||
166 | ret = read(fd, buf, total); | |
167 | if (ret < 0) { | |
168 | perror("read refill"); | |
169 | return -1; | |
170 | } | |
171 | ||
172 | if (ret > 0) | |
173 | ret = fifo_put(fifo, buf, ret); | |
174 | ||
175 | return ret; | |
176 | } | |
177 | ||
178 | /* | |
179 | * Retrieve 'len' bytes from the fifo, refilling if necessary. | |
180 | */ | |
181 | static int trace_fifo_get(struct fifo *fifo, int fd, void *buf, | |
182 | unsigned int len) | |
183 | { | |
184 | if (fifo_len(fifo) < len) { | |
185 | int ret = refill_fifo(fifo, fd); | |
186 | ||
187 | if (ret < 0) | |
188 | return ret; | |
189 | } | |
190 | ||
191 | return fifo_get(fifo, buf, len); | |
192 | } | |
193 | ||
194 | /* | |
195 | * Just discard the pdu by seeking past it. | |
196 | */ | |
197 | static int discard_pdu(struct fifo *fifo, int fd, struct blk_io_trace *t) | |
198 | { | |
199 | if (t->pdu_len == 0) | |
200 | return 0; | |
201 | ||
202 | return trace_fifo_get(fifo, fd, NULL, t->pdu_len); | |
203 | } | |
204 | ||
8fc46b4d | 205 | static int handle_trace_notify(struct blk_io_trace *t) |
40bafa33 JA |
206 | { |
207 | switch (t->action) { | |
208 | case BLK_TN_PROCESS: | |
209 | //printf("got process notify: %x, %d\n", t->action, t->pid); | |
210 | break; | |
211 | case BLK_TN_TIMESTAMP: | |
212 | //printf("got timestamp notify: %x, %d\n", t->action, t->pid); | |
213 | break; | |
214 | case BLK_TN_MESSAGE: | |
215 | break; | |
216 | default: | |
17bf0853 | 217 | log_err("unknown trace act %x\n", t->action); |
8fc46b4d | 218 | return 1; |
40bafa33 | 219 | } |
8fc46b4d JA |
220 | |
221 | return 0; | |
40bafa33 JA |
222 | } |
223 | ||
224 | static void __add_bs(struct btrace_out *o, unsigned int len, int rw) | |
225 | { | |
226 | o->bs[rw] = realloc(o->bs[rw], (o->nr_bs[rw] + 1) * sizeof(struct bs)); | |
227 | o->bs[rw][o->nr_bs[rw]].bs = len; | |
228 | o->bs[rw][o->nr_bs[rw]].nr = 1; | |
229 | o->nr_bs[rw]++; | |
230 | } | |
231 | ||
232 | static void add_bs(struct btrace_out *o, unsigned int len, int rw) | |
233 | { | |
234 | struct bs *bs = o->bs[rw]; | |
235 | int i; | |
236 | ||
237 | if (!o->nr_bs[rw]) { | |
238 | __add_bs(o, len, rw); | |
239 | return; | |
240 | } | |
241 | ||
242 | for (i = 0; i < o->nr_bs[rw]; i++) { | |
243 | if (bs[i].bs == len) { | |
244 | bs[i].nr++; | |
245 | return; | |
246 | } | |
247 | } | |
248 | ||
249 | __add_bs(o, len, rw); | |
250 | } | |
251 | ||
252 | #define FMINORBITS 20 | |
253 | #define FMINORMASK ((1U << FMINORBITS) - 1) | |
254 | #define FMAJOR(dev) ((unsigned int) ((dev) >> FMINORBITS)) | |
255 | #define FMINOR(dev) ((unsigned int) ((dev) & FMINORMASK)) | |
256 | ||
8fc46b4d | 257 | static int btrace_add_file(struct btrace_pid *p, uint32_t devno) |
40bafa33 JA |
258 | { |
259 | unsigned int maj = FMAJOR(devno); | |
260 | unsigned int min = FMINOR(devno); | |
261 | struct trace_file *f; | |
262 | unsigned int i; | |
263 | char dev[256]; | |
264 | ||
35661615 | 265 | if (filename) |
8fc46b4d | 266 | return 0; |
65ff9cd5 | 267 | if (p->last_major == maj && p->last_minor == min) |
8fc46b4d | 268 | return 0; |
40bafa33 | 269 | |
65ff9cd5 JA |
270 | p->last_major = maj; |
271 | p->last_minor = min; | |
40bafa33 JA |
272 | |
273 | /* | |
274 | * check for this file in our list | |
275 | */ | |
65ff9cd5 JA |
276 | for (i = 0; i < p->nr_files; i++) { |
277 | f = &p->files[i]; | |
40bafa33 JA |
278 | |
279 | if (f->major == maj && f->minor == min) | |
8fc46b4d | 280 | return 0; |
40bafa33 JA |
281 | } |
282 | ||
283 | strcpy(dev, "/dev"); | |
284 | if (!blktrace_lookup_device(NULL, dev, maj, min)) { | |
285 | log_err("fio: failed to find device %u/%u\n", maj, min); | |
8fc46b4d JA |
286 | if (!output_ascii) { |
287 | log_err("fio: use -d to specify device\n"); | |
288 | return 1; | |
289 | } | |
290 | return 0; | |
40bafa33 JA |
291 | } |
292 | ||
65ff9cd5 JA |
293 | p->files = realloc(p->files, (p->nr_files + 1) * sizeof(*f)); |
294 | f = &p->files[p->nr_files]; | |
40bafa33 JA |
295 | f->name = strdup(dev); |
296 | f->major = maj; | |
297 | f->minor = min; | |
65ff9cd5 | 298 | p->nr_files++; |
8fc46b4d JA |
299 | return 0; |
300 | } | |
301 | ||
302 | static int t_to_rwdir(struct blk_io_trace *t) | |
303 | { | |
304 | if (t->action & BLK_TC_ACT(BLK_TC_DISCARD)) | |
305 | return DDIR_TRIM; | |
306 | ||
307 | return (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; | |
40bafa33 JA |
308 | } |
309 | ||
8fc46b4d | 310 | static int handle_trace_discard(struct blk_io_trace *t, struct btrace_pid *p) |
40bafa33 | 311 | { |
65ff9cd5 JA |
312 | struct btrace_out *o = &p->o; |
313 | ||
8fc46b4d JA |
314 | if (btrace_add_file(p, t->device)) |
315 | return 1; | |
40bafa33 | 316 | |
8fc46b4d JA |
317 | if (o->first_ttime[2] == -1ULL) |
318 | o->first_ttime[2] = t->time; | |
40bafa33 JA |
319 | |
320 | o->ios[DDIR_TRIM]++; | |
321 | add_bs(o, t->bytes, DDIR_TRIM); | |
8fc46b4d | 322 | return 0; |
40bafa33 JA |
323 | } |
324 | ||
8fc46b4d | 325 | static int handle_trace_fs(struct blk_io_trace *t, struct btrace_pid *p) |
40bafa33 | 326 | { |
65ff9cd5 | 327 | struct btrace_out *o = &p->o; |
40bafa33 JA |
328 | int rw; |
329 | ||
8fc46b4d JA |
330 | if (btrace_add_file(p, t->device)) |
331 | return 1; | |
40bafa33 JA |
332 | |
333 | first_ttime = min(first_ttime, (uint64_t) t->time); | |
334 | ||
40bafa33 JA |
335 | rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
336 | ||
8fc46b4d JA |
337 | if (o->first_ttime[rw] == -1ULL) |
338 | o->first_ttime[rw] = t->time; | |
339 | ||
40bafa33 JA |
340 | add_bs(o, t->bytes, rw); |
341 | o->ios[rw]++; | |
342 | ||
343 | if (t->sector == o->last_end[rw] || o->last_end[rw] == -1ULL) | |
344 | o->seq[rw]++; | |
345 | ||
346 | o->last_end[rw] = t->sector + (t->bytes >> 9); | |
8fc46b4d | 347 | return 0; |
40bafa33 JA |
348 | } |
349 | ||
8fc46b4d | 350 | static int handle_queue_trace(struct blk_io_trace *t, struct btrace_pid *p) |
40bafa33 JA |
351 | { |
352 | if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY)) | |
8fc46b4d | 353 | return handle_trace_notify(t); |
40bafa33 | 354 | else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD)) |
8fc46b4d | 355 | return handle_trace_discard(t, p); |
40bafa33 | 356 | else |
8fc46b4d | 357 | return handle_trace_fs(t, p); |
40bafa33 JA |
358 | } |
359 | ||
8fc46b4d | 360 | static int handle_trace(struct blk_io_trace *t, struct btrace_pid *p) |
40bafa33 JA |
361 | { |
362 | unsigned int act = t->action & 0xffff; | |
8fc46b4d | 363 | int ret = 0; |
40bafa33 JA |
364 | |
365 | if (act == __BLK_TA_QUEUE) { | |
366 | inflight_add(p, t->sector, t->bytes); | |
8fc46b4d | 367 | ret = handle_queue_trace(t, p); |
40bafa33 JA |
368 | } else if (act == __BLK_TA_REQUEUE) { |
369 | p->o.inflight--; | |
370 | } else if (act == __BLK_TA_BACKMERGE) { | |
371 | struct inflight *i; | |
372 | ||
373 | i = inflight_find(t->sector + (t->bytes >> 9)); | |
374 | if (i) | |
375 | inflight_remove(i); | |
376 | ||
377 | i = inflight_find(t->sector); | |
8fc46b4d JA |
378 | if (i) |
379 | inflight_merge(i, t_to_rwdir(t), t->bytes); | |
40bafa33 JA |
380 | } else if (act == __BLK_TA_FRONTMERGE) { |
381 | struct inflight *i; | |
382 | ||
383 | i = inflight_find(t->sector + (t->bytes >> 9)); | |
384 | if (i) | |
385 | inflight_remove(i); | |
386 | ||
387 | i = inflight_find(t->sector); | |
8fc46b4d JA |
388 | if (i) |
389 | inflight_merge(i, t_to_rwdir(t), 0); | |
40bafa33 JA |
390 | } else if (act == __BLK_TA_COMPLETE) { |
391 | struct inflight *i; | |
392 | ||
393 | i = inflight_find(t->sector + (t->bytes >> 9)); | |
cea475cd | 394 | if (i) { |
8fc46b4d | 395 | i->p->o.kb[t_to_rwdir(t)] += (t->bytes >> 10); |
85fcdac8 | 396 | i->p->o.complete_seen = 1; |
40bafa33 | 397 | inflight_remove(i); |
cea475cd | 398 | } |
40bafa33 | 399 | } |
8fc46b4d JA |
400 | |
401 | return ret; | |
40bafa33 JA |
402 | } |
403 | ||
404 | static void byteswap_trace(struct blk_io_trace *t) | |
405 | { | |
406 | t->magic = fio_swap32(t->magic); | |
407 | t->sequence = fio_swap32(t->sequence); | |
408 | t->time = fio_swap64(t->time); | |
409 | t->sector = fio_swap64(t->sector); | |
410 | t->bytes = fio_swap32(t->bytes); | |
411 | t->action = fio_swap32(t->action); | |
412 | t->pid = fio_swap32(t->pid); | |
413 | t->device = fio_swap32(t->device); | |
414 | t->cpu = fio_swap32(t->cpu); | |
415 | t->error = fio_swap16(t->error); | |
416 | t->pdu_len = fio_swap16(t->pdu_len); | |
417 | } | |
418 | ||
419 | static struct btrace_pid *pid_hash_find(pid_t pid, struct flist_head *list) | |
420 | { | |
421 | struct flist_head *e; | |
422 | struct btrace_pid *p; | |
423 | ||
424 | flist_for_each(e, list) { | |
425 | p = flist_entry(e, struct btrace_pid, hash_list); | |
426 | if (p->pid == pid) | |
427 | return p; | |
428 | } | |
429 | ||
430 | return NULL; | |
431 | } | |
432 | ||
433 | static struct btrace_pid *pid_hash_get(pid_t pid) | |
434 | { | |
435 | struct flist_head *hash_list; | |
436 | struct btrace_pid *p; | |
437 | ||
438 | hash_list = &pid_hash[hash_long(pid, PID_HASH_BITS)]; | |
439 | ||
440 | p = pid_hash_find(pid, hash_list); | |
441 | if (!p) { | |
442 | int i; | |
443 | ||
444 | p = calloc(1, sizeof(*p)); | |
40bafa33 | 445 | |
8fc46b4d JA |
446 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
447 | p->o.first_ttime[i] = -1ULL; | |
448 | p->o.last_ttime[i] = -1ULL; | |
40bafa33 | 449 | p->o.last_end[i] = -1ULL; |
8fc46b4d | 450 | } |
40bafa33 JA |
451 | |
452 | p->pid = pid; | |
453 | flist_add_tail(&p->hash_list, hash_list); | |
454 | flist_add_tail(&p->pid_list, &pid_list); | |
455 | } | |
456 | ||
457 | return p; | |
458 | } | |
459 | ||
460 | /* | |
461 | * Load a blktrace file by reading all the blk_io_trace entries, and storing | |
462 | * them as io_pieces like the fio text version would do. | |
463 | */ | |
8a1db9a1 | 464 | static int load_blktrace(const char *fname, int need_swap) |
40bafa33 JA |
465 | { |
466 | struct btrace_pid *p; | |
467 | unsigned long traces; | |
468 | struct blk_io_trace t; | |
469 | struct fifo *fifo; | |
8fc46b4d | 470 | int fd, ret = 0; |
40bafa33 | 471 | |
8a1db9a1 | 472 | fd = open(fname, O_RDONLY); |
40bafa33 JA |
473 | if (fd < 0) { |
474 | perror("open trace file\n"); | |
475 | return 1; | |
476 | } | |
477 | ||
478 | fifo = fifo_alloc(TRACE_FIFO_SIZE); | |
479 | ||
480 | traces = 0; | |
481 | do { | |
8a1db9a1 | 482 | ret = trace_fifo_get(fifo, fd, &t, sizeof(t)); |
40bafa33 JA |
483 | if (ret < 0) |
484 | goto err; | |
485 | else if (!ret) | |
486 | break; | |
487 | else if (ret < (int) sizeof(t)) { | |
17bf0853 | 488 | log_err("fio: short fifo get\n"); |
40bafa33 JA |
489 | break; |
490 | } | |
491 | ||
492 | if (need_swap) | |
493 | byteswap_trace(&t); | |
494 | ||
495 | if ((t.magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
17bf0853 | 496 | log_err("fio: bad magic in blktrace data: %x\n", t.magic); |
40bafa33 JA |
497 | goto err; |
498 | } | |
499 | if ((t.magic & 0xff) != BLK_IO_TRACE_VERSION) { | |
17bf0853 | 500 | log_err("fio: bad blktrace version %d\n", t.magic & 0xff); |
40bafa33 JA |
501 | goto err; |
502 | } | |
503 | ret = discard_pdu(fifo, fd, &t); | |
504 | if (ret < 0) { | |
17bf0853 | 505 | log_err("blktrace lseek\n"); |
40bafa33 JA |
506 | goto err; |
507 | } else if (t.pdu_len != ret) { | |
17bf0853 | 508 | log_err("fio: discarded %d of %d\n", ret, t.pdu_len); |
40bafa33 JA |
509 | goto err; |
510 | } | |
511 | ||
512 | p = pid_hash_get(t.pid); | |
8fc46b4d JA |
513 | ret = handle_trace(&t, p); |
514 | if (ret) | |
515 | break; | |
516 | p->o.last_ttime[t_to_rwdir(&t)] = t.time; | |
40bafa33 JA |
517 | traces++; |
518 | } while (1); | |
519 | ||
520 | fifo_free(fifo); | |
521 | close(fd); | |
522 | ||
8fc46b4d JA |
523 | if (ret) |
524 | return ret; | |
525 | ||
40bafa33 JA |
526 | if (output_ascii) |
527 | printf("Traces loaded: %lu\n", traces); | |
528 | ||
529 | return 0; | |
530 | err: | |
531 | close(fd); | |
532 | fifo_free(fifo); | |
533 | return 1; | |
534 | } | |
535 | ||
536 | static int bs_cmp(const void *ba, const void *bb) | |
537 | { | |
538 | const struct bs *bsa = ba; | |
539 | const struct bs *bsb = bb; | |
540 | ||
541 | return bsb->nr - bsa->nr; | |
542 | } | |
543 | ||
8fc46b4d JA |
544 | static unsigned long o_to_kb_rate(struct btrace_out *o, int rw) |
545 | { | |
546 | uint64_t usec = (o->last_ttime[rw] - o->first_ttime[rw]) / 1000ULL; | |
547 | uint64_t val; | |
548 | ||
97b32195 JA |
549 | if (!usec) |
550 | return 0; | |
551 | ||
552 | usec /= 1000; | |
8fc46b4d JA |
553 | if (!usec) |
554 | return 0; | |
555 | ||
556 | val = o->kb[rw] * 1000ULL; | |
97b32195 | 557 | return val / usec; |
8fc46b4d JA |
558 | } |
559 | ||
560 | static uint64_t o_first_ttime(struct btrace_out *o) | |
561 | { | |
562 | uint64_t first; | |
563 | ||
564 | first = min(o->first_ttime[0], o->first_ttime[1]); | |
565 | return min(first, o->first_ttime[2]); | |
566 | } | |
567 | ||
568 | static uint64_t o_longest_ttime(struct btrace_out *o) | |
569 | { | |
570 | uint64_t ret = 0; | |
571 | int i; | |
572 | ||
573 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
574 | uint64_t diff; | |
575 | ||
576 | diff = o->last_ttime[i] - o->first_ttime[i]; | |
577 | ret = max(diff, ret); | |
578 | } | |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
40bafa33 JA |
583 | static void __output_p_ascii(struct btrace_pid *p, unsigned long *ios) |
584 | { | |
585 | const char *msg[] = { "reads", "writes", "trims" }; | |
586 | struct btrace_out *o = &p->o; | |
cea475cd | 587 | unsigned long total, usec; |
40bafa33 JA |
588 | int i, j; |
589 | ||
590 | printf("[pid:\t%u]\n", p->pid); | |
591 | ||
592 | total = ddir_rw_sum(o->ios); | |
593 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
594 | float perc; | |
595 | ||
596 | if (!o->ios[i]) | |
597 | continue; | |
598 | ||
599 | ios[i] += o->ios[i] + o->merges[i]; | |
600 | printf("%s\n", msg[i]); | |
601 | perc = ((float) o->ios[i] * 100.0) / (float) total; | |
602 | printf("\tios: %lu (perc=%3.2f%%)\n", o->ios[i], perc); | |
603 | perc = ((float) o->merges[i] * 100.0) / (float) total; | |
604 | printf("\tmerges: %lu (perc=%3.2f%%)\n", o->merges[i], perc); | |
605 | perc = ((float) o->seq[i] * 100.0) / (float) o->ios[i]; | |
761c2729 | 606 | printf("\tseq: %lu (perc=%3.2f%%)\n", (unsigned long) o->seq[i], perc); |
8fc46b4d | 607 | printf("\trate: %lu KB/sec\n", o_to_kb_rate(o, i)); |
40bafa33 JA |
608 | |
609 | for (j = 0; j < o->nr_bs[i]; j++) { | |
610 | struct bs *bs = &o->bs[i][j]; | |
611 | ||
612 | perc = (((float) bs->nr * 100.0) / (float) o->ios[i]); | |
613 | printf("\tbs=%u, perc=%3.2f%%\n", bs->bs, perc); | |
614 | } | |
615 | } | |
616 | ||
617 | printf("depth:\t%u\n", o->depth); | |
8fc46b4d | 618 | usec = o_longest_ttime(o) / 1000ULL; |
cea475cd | 619 | printf("usec:\t%lu (delay=%llu)\n", usec, (unsigned long long) o->start_delay); |
40bafa33 JA |
620 | |
621 | printf("files:\t"); | |
65ff9cd5 JA |
622 | for (i = 0; i < p->nr_files; i++) |
623 | printf("%s,", p->files[i].name); | |
40bafa33 JA |
624 | printf("\n"); |
625 | ||
626 | printf("\n"); | |
627 | } | |
628 | ||
629 | static int __output_p_fio(struct btrace_pid *p, unsigned long *ios) | |
630 | { | |
631 | struct btrace_out *o = &p->o; | |
632 | unsigned long total; | |
1a8cad44 | 633 | unsigned long long time; |
40bafa33 JA |
634 | float perc; |
635 | int i, j; | |
636 | ||
637 | if ((o->ios[0] + o->ios[1]) && o->ios[2]) { | |
638 | log_err("fio: trace has both read/write and trim\n"); | |
639 | return 1; | |
640 | } | |
8fc46b4d JA |
641 | if (!p->nr_files) { |
642 | log_err("fio: no devices found\n"); | |
643 | return 1; | |
644 | } | |
40bafa33 JA |
645 | |
646 | printf("[pid%u]\n", p->pid); | |
647 | printf("direct=1\n"); | |
648 | if (o->depth == 1) | |
649 | printf("ioengine=sync\n"); | |
650 | else | |
651 | printf("ioengine=libaio\niodepth=%u\n", o->depth); | |
652 | ||
653 | if (o->ios[0] && !o->ios[1]) | |
654 | printf("rw=randread\n"); | |
655 | else if (!o->ios[0] && o->ios[1]) | |
656 | printf("rw=randwrite\n"); | |
657 | else if (o->ios[2]) | |
658 | printf("rw=randtrim\n"); | |
659 | else { | |
660 | printf("rw=randrw\n"); | |
661 | total = ddir_rw_sum(o->ios); | |
662 | perc = ((float) o->ios[0] * 100.0) / (float) total; | |
663 | printf("rwmixread=%u\n", (int) (perc + 0.99)); | |
664 | } | |
665 | ||
35661615 | 666 | printf("percentage_random="); |
40bafa33 JA |
667 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
668 | if (o->seq[i] && o->ios[i]) { | |
669 | perc = ((float) o->seq[i] * 100.0) / (float) o->ios[i]; | |
670 | if (perc >= 99.0) | |
671 | perc = 100.0; | |
672 | } else | |
673 | perc = 100.0; | |
674 | ||
675 | if (i) | |
676 | printf(","); | |
35661615 | 677 | perc = 100.0 - perc; |
40bafa33 JA |
678 | printf("%u", (int) perc); |
679 | } | |
680 | printf("\n"); | |
681 | ||
682 | printf("filename="); | |
65ff9cd5 | 683 | for (i = 0; i < p->nr_files; i++) { |
40bafa33 JA |
684 | if (i) |
685 | printf(":"); | |
65ff9cd5 | 686 | printf("%s", p->files[i].name); |
40bafa33 JA |
687 | } |
688 | printf("\n"); | |
689 | ||
690 | printf("startdelay=%llus\n", o->start_delay / 1000000ULL); | |
691 | ||
8fc46b4d | 692 | time = o_longest_ttime(o); |
1a8cad44 JA |
693 | time = (time + 1000000000ULL - 1) / 1000000000ULL; |
694 | printf("runtime=%llus\n", time); | |
695 | ||
40bafa33 JA |
696 | printf("bssplit="); |
697 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
698 | ||
699 | if (i && o->nr_bs[i - 1] && o->nr_bs[i]) | |
700 | printf(","); | |
701 | ||
702 | for (j = 0; j < o->nr_bs[i]; j++) { | |
703 | struct bs *bs = &o->bs[i][j]; | |
704 | ||
705 | perc = (((float) bs->nr * 100.0) / (float) o->ios[i]); | |
706 | if (perc < 1.00) | |
707 | continue; | |
708 | if (j) | |
709 | printf(":"); | |
710 | if (j + 1 == o->nr_bs[i]) | |
711 | printf("%u/", bs->bs); | |
712 | else | |
713 | printf("%u/%u", bs->bs, (int) perc); | |
714 | } | |
715 | } | |
8fc46b4d | 716 | printf("\n"); |
40bafa33 | 717 | |
8fc46b4d JA |
718 | if (set_rate) { |
719 | printf("rate="); | |
720 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
721 | unsigned long rate; | |
722 | ||
723 | rate = o_to_kb_rate(o, i); | |
724 | if (i) | |
725 | printf(","); | |
726 | if (rate) | |
727 | printf("%luk", rate); | |
728 | } | |
729 | printf("\n"); | |
730 | } | |
731 | ||
732 | printf("\n"); | |
40bafa33 JA |
733 | return 0; |
734 | } | |
735 | ||
736 | static int __output_p(struct btrace_pid *p, unsigned long *ios) | |
737 | { | |
738 | struct btrace_out *o = &p->o; | |
739 | int i, ret = 0; | |
740 | ||
741 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
742 | if (o->nr_bs[i] <= 1) | |
743 | continue; | |
744 | qsort(o->bs[i], o->nr_bs[i], sizeof(struct bs), bs_cmp); | |
745 | } | |
746 | ||
35661615 | 747 | if (filename) { |
65ff9cd5 JA |
748 | p->files = malloc(sizeof(struct trace_file)); |
749 | p->nr_files++; | |
750 | p->files[0].name = filename; | |
35661615 JA |
751 | } |
752 | ||
40bafa33 JA |
753 | if (output_ascii) |
754 | __output_p_ascii(p, ios); | |
755 | else | |
756 | ret = __output_p_fio(p, ios); | |
757 | ||
758 | return ret; | |
759 | } | |
760 | ||
8fc46b4d JA |
761 | static void remove_ddir(struct btrace_out *o, int rw) |
762 | { | |
763 | o->ios[rw] = 0; | |
764 | } | |
765 | ||
40bafa33 JA |
766 | static int prune_entry(struct btrace_out *o) |
767 | { | |
8fc46b4d | 768 | unsigned long rate; |
40bafa33 | 769 | uint64_t time; |
8fc46b4d | 770 | int i; |
40bafa33 JA |
771 | |
772 | if (ddir_rw_sum(o->ios) < ios_threshold) | |
773 | return 1; | |
774 | ||
8fc46b4d | 775 | time = o_longest_ttime(o) / 1000ULL; |
40bafa33 JA |
776 | if (time < rt_threshold) |
777 | return 1; | |
778 | ||
8fc46b4d JA |
779 | rate = 0; |
780 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { | |
781 | unsigned long this_rate; | |
782 | ||
783 | this_rate = o_to_kb_rate(o, i); | |
784 | if (this_rate < rate_threshold) { | |
785 | remove_ddir(o, i); | |
786 | this_rate = 0; | |
787 | } | |
788 | rate += this_rate; | |
789 | } | |
790 | ||
791 | if (rate < rate_threshold) | |
792 | return 1; | |
793 | ||
40bafa33 JA |
794 | return 0; |
795 | } | |
796 | ||
797 | static int entry_cmp(void *priv, struct flist_head *a, struct flist_head *b) | |
798 | { | |
799 | struct btrace_pid *pa = flist_entry(a, struct btrace_pid, pid_list); | |
800 | struct btrace_pid *pb = flist_entry(b, struct btrace_pid, pid_list); | |
801 | ||
802 | return ddir_rw_sum(pb->o.ios) - ddir_rw_sum(pa->o.ios); | |
803 | } | |
804 | ||
17bf0853 JA |
805 | static void free_p(struct btrace_pid *p) |
806 | { | |
807 | struct btrace_out *o = &p->o; | |
808 | int i; | |
809 | ||
65ff9cd5 JA |
810 | for (i = 0; i < p->nr_files; i++) { |
811 | if (p->files[i].name && p->files[i].name != filename) | |
812 | free(p->files[i].name); | |
17bf0853 JA |
813 | } |
814 | ||
815 | for (i = 0; i < DDIR_RWDIR_CNT; i++) | |
816 | free(o->bs[i]); | |
817 | ||
65ff9cd5 | 818 | free(p->files); |
17bf0853 JA |
819 | flist_del(&p->pid_list); |
820 | flist_del(&p->hash_list); | |
821 | free(p); | |
822 | } | |
823 | ||
40bafa33 JA |
824 | static int output_p(void) |
825 | { | |
826 | unsigned long ios[DDIR_RWDIR_CNT]; | |
827 | struct flist_head *e, *tmp; | |
85fcdac8 | 828 | int depth_disabled = 0; |
40bafa33 JA |
829 | int ret = 0; |
830 | ||
831 | flist_for_each_safe(e, tmp, &pid_list) { | |
832 | struct btrace_pid *p; | |
833 | ||
834 | p = flist_entry(e, struct btrace_pid, pid_list); | |
835 | if (prune_entry(&p->o)) { | |
17bf0853 | 836 | free_p(p); |
40bafa33 JA |
837 | continue; |
838 | } | |
8fc46b4d | 839 | p->o.start_delay = (o_first_ttime(&p->o) / 1000ULL) - first_ttime; |
85fcdac8 | 840 | depth_disabled += p->o.depth_disabled; |
40bafa33 JA |
841 | } |
842 | ||
85fcdac8 JA |
843 | if (depth_disabled) |
844 | log_err("fio: missing completion traces, depths capped at %u\n", max_depth); | |
845 | ||
40bafa33 JA |
846 | memset(ios, 0, sizeof(ios)); |
847 | ||
848 | flist_sort(NULL, &pid_list, entry_cmp); | |
849 | ||
850 | flist_for_each(e, &pid_list) { | |
851 | struct btrace_pid *p; | |
852 | ||
853 | p = flist_entry(e, struct btrace_pid, pid_list); | |
854 | ret |= __output_p(p, ios); | |
8fc46b4d JA |
855 | if (ret && !output_ascii) |
856 | break; | |
40bafa33 JA |
857 | } |
858 | ||
859 | if (output_ascii) | |
860 | printf("Total: reads=%lu, writes=%lu\n", ios[0], ios[1]); | |
861 | ||
862 | return ret; | |
863 | } | |
864 | ||
865 | static int usage(char *argv[]) | |
866 | { | |
17bf0853 JA |
867 | log_err("%s: <blktrace bin file>\n", argv[0]); |
868 | log_err("\t-t\tUsec threshold to ignore task\n"); | |
869 | log_err("\t-n\tNumber IOS threshold to ignore task\n"); | |
870 | log_err("\t-f\tFio job file output\n"); | |
871 | log_err("\t-d\tUse this file/device for replay\n"); | |
8fc46b4d JA |
872 | log_err("\t-r\tIgnore jobs with less than this KB/sec rate\n"); |
873 | log_err("\t-R\tSet rate in fio job\n"); | |
85fcdac8 | 874 | log_err("\t-D\tCap queue depth at this value (def=%u)\n", max_depth); |
40bafa33 JA |
875 | return 1; |
876 | } | |
877 | ||
17bf0853 | 878 | static int trace_needs_swap(const char *trace_file, int *swap) |
40bafa33 | 879 | { |
40bafa33 | 880 | struct blk_io_trace t; |
17bf0853 JA |
881 | int fd, ret; |
882 | ||
883 | *swap = -1; | |
884 | ||
885 | fd = open(trace_file, O_RDONLY); | |
886 | if (fd < 0) { | |
887 | perror("open"); | |
888 | return 1; | |
889 | } | |
890 | ||
891 | ret = read(fd, &t, sizeof(t)); | |
892 | if (ret < 0) { | |
18be35e8 | 893 | close(fd); |
17bf0853 JA |
894 | perror("read"); |
895 | return 1; | |
896 | } else if (ret != sizeof(t)) { | |
18be35e8 | 897 | close(fd); |
17bf0853 JA |
898 | log_err("fio: short read on trace file\n"); |
899 | return 1; | |
900 | } | |
901 | ||
902 | close(fd); | |
903 | ||
904 | if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) | |
905 | *swap = 0; | |
906 | else { | |
907 | /* | |
908 | * Maybe it needs to be endian swapped... | |
909 | */ | |
910 | t.magic = fio_swap32(t.magic); | |
911 | if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) | |
912 | *swap = 1; | |
913 | } | |
914 | ||
915 | if (*swap == -1) { | |
916 | log_err("fio: blktrace appears corrupt\n"); | |
917 | return 1; | |
918 | } | |
919 | ||
920 | return 0; | |
921 | } | |
922 | ||
923 | int main(int argc, char *argv[]) | |
924 | { | |
925 | int need_swap, i, c; | |
40bafa33 JA |
926 | |
927 | if (argc < 2) | |
928 | return usage(argv); | |
929 | ||
85fcdac8 | 930 | while ((c = getopt(argc, argv, "t:n:fd:r:RD:")) != -1) { |
40bafa33 | 931 | switch (c) { |
8fc46b4d JA |
932 | case 'R': |
933 | set_rate = 1; | |
934 | break; | |
935 | case 'r': | |
936 | rate_threshold = atoi(optarg); | |
937 | break; | |
40bafa33 JA |
938 | case 't': |
939 | rt_threshold = atoi(optarg); | |
940 | break; | |
941 | case 'n': | |
942 | ios_threshold = atoi(optarg); | |
943 | break; | |
944 | case 'f': | |
945 | output_ascii = 0; | |
946 | break; | |
35661615 JA |
947 | case 'd': |
948 | filename = strdup(optarg); | |
949 | break; | |
85fcdac8 JA |
950 | case 'D': |
951 | max_depth = atoi(optarg); | |
952 | break; | |
40bafa33 JA |
953 | case '?': |
954 | default: | |
955 | return usage(argv); | |
956 | } | |
957 | } | |
958 | ||
959 | if (argc == optind) | |
960 | return usage(argv); | |
961 | ||
17bf0853 | 962 | if (trace_needs_swap(argv[optind], &need_swap)) |
40bafa33 | 963 | return 1; |
40bafa33 JA |
964 | |
965 | for (i = 0; i < PID_HASH_SIZE; i++) | |
966 | INIT_FLIST_HEAD(&pid_hash[i]); | |
17bf0853 JA |
967 | for (i = 0; i < INFLIGHT_HASH_SIZE; i++) |
968 | INIT_FLIST_HEAD(&inflight_hash[i]); | |
40bafa33 JA |
969 | |
970 | load_blktrace(argv[optind], need_swap); | |
971 | first_ttime /= 1000ULL; | |
972 | ||
973 | return output_p(); | |
974 | } |