Commit | Line | Data |
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9f8f2064 JA |
1 | #include <stdio.h> |
2 | #include <string.h> | |
3 | #include <sys/time.h> | |
4 | #include <sys/types.h> | |
5 | #include <sys/stat.h> | |
6 | #include <dirent.h> | |
7 | #include <libgen.h> | |
8 | #include <math.h> | |
9edf7b3e | 9 | #include <assert.h> |
9f8f2064 JA |
10 | |
11 | #include "fio.h" | |
c97bd0fa | 12 | #include "smalloc.h" |
7c9b1bce | 13 | #include "diskutil.h" |
a39fb9ea | 14 | #include "helper_thread.h" |
9f8f2064 JA |
15 | |
16 | static int last_majdev, last_mindev; | |
c97bd0fa | 17 | static struct disk_util *last_du; |
9f8f2064 | 18 | |
9ec7779f | 19 | static struct fio_mutex *disk_util_mutex; |
9ec7779f | 20 | |
d09a64a0 | 21 | FLIST_HEAD(disk_list); |
9f8f2064 | 22 | |
2db4ecca JA |
23 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
24 | int majdev, int mindev, char *path); | |
25 | ||
c97bd0fa JA |
26 | static void disk_util_free(struct disk_util *du) |
27 | { | |
28 | if (du == last_du) | |
29 | last_du = NULL; | |
30 | ||
b8d541d5 JA |
31 | while (!flist_empty(&du->slaves)) { |
32 | struct disk_util *slave; | |
33 | ||
9342d5f8 | 34 | slave = flist_first_entry(&du->slaves, struct disk_util, slavelist); |
b8d541d5 JA |
35 | flist_del(&slave->slavelist); |
36 | slave->users--; | |
37 | } | |
93bcfd20 | 38 | |
c97bd0fa | 39 | fio_mutex_remove(du->lock); |
c97bd0fa JA |
40 | sfree(du); |
41 | } | |
42 | ||
9f8f2064 JA |
43 | static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus) |
44 | { | |
45 | unsigned in_flight; | |
d09a64a0 | 46 | unsigned long long sectors[2]; |
9f8f2064 JA |
47 | char line[256]; |
48 | FILE *f; | |
49 | char *p; | |
5ec10eaa | 50 | int ret; |
9f8f2064 | 51 | |
cd991b9e JA |
52 | dprint(FD_DISKUTIL, "open stat file: %s\n", du->path); |
53 | ||
9f8f2064 JA |
54 | f = fopen(du->path, "r"); |
55 | if (!f) | |
56 | return 1; | |
57 | ||
58 | p = fgets(line, sizeof(line), f); | |
59 | if (!p) { | |
60 | fclose(f); | |
61 | return 1; | |
62 | } | |
63 | ||
cd991b9e JA |
64 | dprint(FD_DISKUTIL, "%s: %s", du->path, p); |
65 | ||
504bc961 JA |
66 | ret = sscanf(p, "%llu %llu %llu %llu %llu %llu %llu %llu %u %llu %llu\n", |
67 | (unsigned long long *) &dus->s.ios[0], | |
68 | (unsigned long long *) &dus->s.merges[0], | |
69 | §ors[0], | |
70 | (unsigned long long *) &dus->s.ticks[0], | |
71 | (unsigned long long *) &dus->s.ios[1], | |
72 | (unsigned long long *) &dus->s.merges[1], | |
73 | §ors[1], | |
74 | (unsigned long long *) &dus->s.ticks[1], | |
75 | &in_flight, | |
76 | (unsigned long long *) &dus->s.io_ticks, | |
77 | (unsigned long long *) &dus->s.time_in_queue); | |
9f8f2064 | 78 | fclose(f); |
cd991b9e | 79 | dprint(FD_DISKUTIL, "%s: stat read ok? %d\n", du->path, ret == 1); |
a3b4cf7d JA |
80 | dus->s.sectors[0] = sectors[0]; |
81 | dus->s.sectors[1] = sectors[1]; | |
cd991b9e | 82 | return ret != 11; |
9f8f2064 JA |
83 | } |
84 | ||
85 | static void update_io_tick_disk(struct disk_util *du) | |
86 | { | |
87 | struct disk_util_stat __dus, *dus, *ldus; | |
88 | struct timeval t; | |
89 | ||
c97bd0fa JA |
90 | if (!du->users) |
91 | return; | |
90b97ac3 JA |
92 | if (get_io_ticks(du, &__dus)) |
93 | return; | |
9f8f2064 JA |
94 | |
95 | dus = &du->dus; | |
96 | ldus = &du->last_dus; | |
97 | ||
a3b4cf7d JA |
98 | dus->s.sectors[0] += (__dus.s.sectors[0] - ldus->s.sectors[0]); |
99 | dus->s.sectors[1] += (__dus.s.sectors[1] - ldus->s.sectors[1]); | |
100 | dus->s.ios[0] += (__dus.s.ios[0] - ldus->s.ios[0]); | |
101 | dus->s.ios[1] += (__dus.s.ios[1] - ldus->s.ios[1]); | |
102 | dus->s.merges[0] += (__dus.s.merges[0] - ldus->s.merges[0]); | |
103 | dus->s.merges[1] += (__dus.s.merges[1] - ldus->s.merges[1]); | |
104 | dus->s.ticks[0] += (__dus.s.ticks[0] - ldus->s.ticks[0]); | |
105 | dus->s.ticks[1] += (__dus.s.ticks[1] - ldus->s.ticks[1]); | |
106 | dus->s.io_ticks += (__dus.s.io_ticks - ldus->s.io_ticks); | |
107 | dus->s.time_in_queue += (__dus.s.time_in_queue - ldus->s.time_in_queue); | |
9f8f2064 JA |
108 | |
109 | fio_gettime(&t, NULL); | |
a3b4cf7d | 110 | dus->s.msec += mtime_since(&du->time, &t); |
9f8f2064 | 111 | memcpy(&du->time, &t, sizeof(t)); |
a3b4cf7d | 112 | memcpy(&ldus->s, &__dus.s, sizeof(__dus.s)); |
9f8f2064 JA |
113 | } |
114 | ||
9ec7779f | 115 | int update_io_ticks(void) |
9f8f2064 | 116 | { |
01743ee1 | 117 | struct flist_head *entry; |
9f8f2064 | 118 | struct disk_util *du; |
9ec7779f | 119 | int ret = 0; |
9f8f2064 | 120 | |
cd991b9e JA |
121 | dprint(FD_DISKUTIL, "update io ticks\n"); |
122 | ||
9ec7779f JA |
123 | fio_mutex_down(disk_util_mutex); |
124 | ||
a47591e4 | 125 | if (!helper_should_exit()) { |
9ec7779f JA |
126 | flist_for_each(entry, &disk_list) { |
127 | du = flist_entry(entry, struct disk_util, list); | |
128 | update_io_tick_disk(du); | |
129 | } | |
130 | } else | |
131 | ret = 1; | |
132 | ||
133 | fio_mutex_up(disk_util_mutex); | |
134 | return ret; | |
9f8f2064 JA |
135 | } |
136 | ||
e11c410c | 137 | static struct disk_util *disk_util_exists(int major, int minor) |
9f8f2064 | 138 | { |
01743ee1 | 139 | struct flist_head *entry; |
9f8f2064 JA |
140 | struct disk_util *du; |
141 | ||
9ec7779f JA |
142 | fio_mutex_down(disk_util_mutex); |
143 | ||
01743ee1 JA |
144 | flist_for_each(entry, &disk_list) { |
145 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 146 | |
9ec7779f JA |
147 | if (major == du->major && minor == du->minor) { |
148 | fio_mutex_up(disk_util_mutex); | |
e11c410c | 149 | return du; |
9ec7779f | 150 | } |
9f8f2064 JA |
151 | } |
152 | ||
9ec7779f | 153 | fio_mutex_up(disk_util_mutex); |
e11c410c | 154 | return NULL; |
9f8f2064 JA |
155 | } |
156 | ||
67423013 ST |
157 | static int get_device_numbers(char *file_name, int *maj, int *min) |
158 | { | |
159 | struct stat st; | |
160 | int majdev, mindev; | |
161 | char tempname[PATH_MAX], *p; | |
162 | ||
163 | if (!lstat(file_name, &st)) { | |
164 | if (S_ISBLK(st.st_mode)) { | |
165 | majdev = major(st.st_rdev); | |
166 | mindev = minor(st.st_rdev); | |
167 | } else if (S_ISCHR(st.st_mode)) { | |
168 | majdev = major(st.st_rdev); | |
169 | mindev = minor(st.st_rdev); | |
170 | if (fio_lookup_raw(st.st_rdev, &majdev, &mindev)) | |
171 | return -1; | |
172 | } else if (S_ISFIFO(st.st_mode)) | |
173 | return -1; | |
174 | else { | |
175 | majdev = major(st.st_dev); | |
176 | mindev = minor(st.st_dev); | |
177 | } | |
178 | } else { | |
179 | /* | |
180 | * must be a file, open "." in that path | |
181 | */ | |
087d0ed0 | 182 | tempname[PATH_MAX - 1] = '\0'; |
67423013 ST |
183 | strncpy(tempname, file_name, PATH_MAX - 1); |
184 | p = dirname(tempname); | |
185 | if (stat(p, &st)) { | |
186 | perror("disk util stat"); | |
187 | return -1; | |
188 | } | |
189 | ||
190 | majdev = major(st.st_dev); | |
191 | mindev = minor(st.st_dev); | |
192 | } | |
193 | ||
194 | *min = mindev; | |
195 | *maj = majdev; | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | static int read_block_dev_entry(char *path, int *maj, int *min) | |
201 | { | |
202 | char line[256], *p; | |
203 | FILE *f; | |
204 | ||
205 | f = fopen(path, "r"); | |
206 | if (!f) { | |
207 | perror("open path"); | |
208 | return 1; | |
209 | } | |
210 | ||
211 | p = fgets(line, sizeof(line), f); | |
212 | fclose(f); | |
213 | ||
214 | if (!p) | |
215 | return 1; | |
216 | ||
217 | if (sscanf(p, "%u:%u", maj, min) != 2) | |
218 | return 1; | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
67423013 | 223 | static void find_add_disk_slaves(struct thread_data *td, char *path, |
2db4ecca | 224 | struct disk_util *masterdu) |
67423013 ST |
225 | { |
226 | DIR *dirhandle = NULL; | |
227 | struct dirent *dirent = NULL; | |
228 | char slavesdir[PATH_MAX], temppath[PATH_MAX], slavepath[PATH_MAX]; | |
229 | struct disk_util *slavedu = NULL; | |
230 | int majdev, mindev; | |
231 | ssize_t linklen; | |
232 | ||
2db4ecca | 233 | sprintf(slavesdir, "%s/%s", path, "slaves"); |
67423013 ST |
234 | dirhandle = opendir(slavesdir); |
235 | if (!dirhandle) | |
236 | return; | |
237 | ||
238 | while ((dirent = readdir(dirhandle)) != NULL) { | |
2db4ecca JA |
239 | if (!strcmp(dirent->d_name, ".") || |
240 | !strcmp(dirent->d_name, "..")) | |
67423013 ST |
241 | continue; |
242 | ||
22497370 | 243 | sprintf(temppath, "%s/%s", slavesdir, dirent->d_name); |
67423013 ST |
244 | /* Can we always assume that the slaves device entries |
245 | * are links to the real directories for the slave | |
246 | * devices? | |
247 | */ | |
976406b8 | 248 | linklen = readlink(temppath, slavepath, PATH_MAX - 1); |
2db4ecca | 249 | if (linklen < 0) { |
67423013 | 250 | perror("readlink() for slave device."); |
f0cc675f | 251 | closedir(dirhandle); |
67423013 ST |
252 | return; |
253 | } | |
2db4ecca | 254 | slavepath[linklen] = '\0'; |
67423013 ST |
255 | |
256 | sprintf(temppath, "%s/%s/dev", slavesdir, slavepath); | |
257 | if (read_block_dev_entry(temppath, &majdev, &mindev)) { | |
258 | perror("Error getting slave device numbers."); | |
f0cc675f | 259 | closedir(dirhandle); |
67423013 ST |
260 | return; |
261 | } | |
262 | ||
b06de82e AB |
263 | /* |
264 | * See if this maj,min already exists | |
265 | */ | |
266 | slavedu = disk_util_exists(majdev, mindev); | |
267 | if (slavedu) | |
268 | continue; | |
269 | ||
22497370 | 270 | sprintf(temppath, "%s/%s", slavesdir, slavepath); |
67423013 ST |
271 | __init_per_file_disk_util(td, majdev, mindev, temppath); |
272 | slavedu = disk_util_exists(majdev, mindev); | |
273 | ||
274 | /* Should probably use an assert here. slavedu should | |
275 | * always be present at this point. */ | |
b8d541d5 JA |
276 | if (slavedu) { |
277 | slavedu->users++; | |
67423013 | 278 | flist_add_tail(&slavedu->slavelist, &masterdu->slaves); |
b8d541d5 | 279 | } |
67423013 ST |
280 | } |
281 | ||
282 | closedir(dirhandle); | |
67423013 ST |
283 | } |
284 | ||
b8fefc2b | 285 | static struct disk_util *disk_util_add(struct thread_data *td, int majdev, |
c97bd0fa | 286 | int mindev, char *path) |
9f8f2064 JA |
287 | { |
288 | struct disk_util *du, *__du; | |
01743ee1 | 289 | struct flist_head *entry; |
4b919f77 | 290 | int l; |
9f8f2064 | 291 | |
cd991b9e JA |
292 | dprint(FD_DISKUTIL, "add maj/min %d/%d: %s\n", majdev, mindev, path); |
293 | ||
c97bd0fa | 294 | du = smalloc(sizeof(*du)); |
81b3c86f | 295 | if (!du) |
fba5c5ff | 296 | return NULL; |
fba5c5ff | 297 | |
9f8f2064 | 298 | memset(du, 0, sizeof(*du)); |
01743ee1 | 299 | INIT_FLIST_HEAD(&du->list); |
4b919f77 KR |
300 | l = snprintf(du->path, sizeof(du->path), "%s/stat", path); |
301 | if (l < 0 || l >= sizeof(du->path)) { | |
302 | log_err("constructed path \"%.100s[...]/stat\" larger than buffer (%zu bytes)\n", | |
303 | path, sizeof(du->path) - 1); | |
304 | sfree(du); | |
305 | return NULL; | |
306 | } | |
a2ba41ed | 307 | strncpy((char *) du->dus.name, basename(path), FIO_DU_NAME_SZ - 1); |
e11c410c | 308 | du->sysfs_root = path; |
9f8f2064 JA |
309 | du->major = majdev; |
310 | du->minor = mindev; | |
67423013 ST |
311 | INIT_FLIST_HEAD(&du->slavelist); |
312 | INIT_FLIST_HEAD(&du->slaves); | |
521da527 | 313 | du->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
c97bd0fa | 314 | du->users = 0; |
9f8f2064 | 315 | |
9ec7779f JA |
316 | fio_mutex_down(disk_util_mutex); |
317 | ||
01743ee1 JA |
318 | flist_for_each(entry, &disk_list) { |
319 | __du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 320 | |
d09a64a0 | 321 | dprint(FD_DISKUTIL, "found %s in list\n", __du->dus.name); |
cd991b9e | 322 | |
d09a64a0 | 323 | if (!strcmp((char *) du->dus.name, (char *) __du->dus.name)) { |
c97bd0fa | 324 | disk_util_free(du); |
9ec7779f | 325 | fio_mutex_up(disk_util_mutex); |
c97bd0fa | 326 | return __du; |
9f8f2064 JA |
327 | } |
328 | } | |
329 | ||
d09a64a0 | 330 | dprint(FD_DISKUTIL, "add %s to list\n", du->dus.name); |
cd991b9e | 331 | |
9f8f2064 JA |
332 | fio_gettime(&du->time, NULL); |
333 | get_io_ticks(du, &du->last_dus); | |
334 | ||
01743ee1 | 335 | flist_add_tail(&du->list, &disk_list); |
9ec7779f JA |
336 | fio_mutex_up(disk_util_mutex); |
337 | ||
67423013 | 338 | find_add_disk_slaves(td, path, du); |
c97bd0fa | 339 | return du; |
9f8f2064 JA |
340 | } |
341 | ||
342 | static int check_dev_match(int majdev, int mindev, char *path) | |
343 | { | |
344 | int major, minor; | |
9f8f2064 | 345 | |
67423013 | 346 | if (read_block_dev_entry(path, &major, &minor)) |
9f8f2064 | 347 | return 1; |
9f8f2064 | 348 | |
c97bd0fa | 349 | if (majdev == major && mindev == minor) |
9f8f2064 | 350 | return 0; |
9f8f2064 | 351 | |
9f8f2064 JA |
352 | return 1; |
353 | } | |
354 | ||
ac0be2ac | 355 | static int find_block_dir(int majdev, int mindev, char *path, int link_ok) |
9f8f2064 JA |
356 | { |
357 | struct dirent *dir; | |
358 | struct stat st; | |
359 | int found = 0; | |
360 | DIR *D; | |
361 | ||
362 | D = opendir(path); | |
363 | if (!D) | |
364 | return 0; | |
365 | ||
366 | while ((dir = readdir(D)) != NULL) { | |
367 | char full_path[256]; | |
368 | ||
369 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) | |
370 | continue; | |
371 | ||
22497370 | 372 | sprintf(full_path, "%s/%s", path, dir->d_name); |
9f8f2064 JA |
373 | |
374 | if (!strcmp(dir->d_name, "dev")) { | |
375 | if (!check_dev_match(majdev, mindev, full_path)) { | |
376 | found = 1; | |
377 | break; | |
378 | } | |
379 | } | |
380 | ||
ac0be2ac JA |
381 | if (link_ok) { |
382 | if (stat(full_path, &st) == -1) { | |
383 | perror("stat"); | |
384 | break; | |
385 | } | |
386 | } else { | |
387 | if (lstat(full_path, &st) == -1) { | |
388 | perror("stat"); | |
389 | break; | |
390 | } | |
9f8f2064 JA |
391 | } |
392 | ||
393 | if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)) | |
394 | continue; | |
395 | ||
ac0be2ac | 396 | found = find_block_dir(majdev, mindev, full_path, 0); |
9f8f2064 JA |
397 | if (found) { |
398 | strcpy(path, full_path); | |
399 | break; | |
400 | } | |
401 | } | |
402 | ||
403 | closedir(D); | |
404 | return found; | |
405 | } | |
406 | ||
c97bd0fa JA |
407 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
408 | int majdev, int mindev, | |
409 | char *path) | |
9f8f2064 JA |
410 | { |
411 | struct stat st; | |
67423013 | 412 | char tmp[PATH_MAX]; |
9f8f2064 JA |
413 | char *p; |
414 | ||
67423013 ST |
415 | /* |
416 | * If there's a ../queue/ directory there, we are inside a partition. | |
417 | * Check if that is the case and jump back. For loop/md/dm etc we | |
418 | * are already in the right spot. | |
419 | */ | |
420 | sprintf(tmp, "%s/../queue", path); | |
421 | if (!stat(tmp, &st)) { | |
422 | p = dirname(path); | |
423 | sprintf(tmp, "%s/queue", p); | |
424 | if (stat(tmp, &st)) { | |
425 | log_err("unknown sysfs layout\n"); | |
c97bd0fa | 426 | return NULL; |
9f8f2064 | 427 | } |
087d0ed0 | 428 | tmp[PATH_MAX - 1] = '\0'; |
67423013 ST |
429 | strncpy(tmp, p, PATH_MAX - 1); |
430 | sprintf(path, "%s", tmp); | |
9f8f2064 JA |
431 | } |
432 | ||
67423013 ST |
433 | if (td->o.ioscheduler && !td->sysfs_root) |
434 | td->sysfs_root = strdup(path); | |
435 | ||
c97bd0fa | 436 | return disk_util_add(td, majdev, mindev, path); |
67423013 ST |
437 | } |
438 | ||
c97bd0fa JA |
439 | static struct disk_util *init_per_file_disk_util(struct thread_data *td, |
440 | char *filename) | |
67423013 ST |
441 | { |
442 | ||
443 | char foo[PATH_MAX]; | |
444 | struct disk_util *du; | |
445 | int mindev, majdev; | |
446 | ||
c97bd0fa JA |
447 | if (get_device_numbers(filename, &majdev, &mindev)) |
448 | return NULL; | |
67423013 ST |
449 | |
450 | dprint(FD_DISKUTIL, "%s belongs to maj/min %d/%d\n", filename, majdev, | |
451 | mindev); | |
cd991b9e | 452 | |
e11c410c JA |
453 | du = disk_util_exists(majdev, mindev); |
454 | if (du) { | |
455 | if (td->o.ioscheduler && !td->sysfs_root) | |
456 | td->sysfs_root = strdup(du->sysfs_root); | |
457 | ||
c97bd0fa | 458 | return du; |
e11c410c | 459 | } |
9f8f2064 JA |
460 | |
461 | /* | |
462 | * for an fs without a device, we will repeatedly stat through | |
463 | * sysfs which can take oodles of time for thousands of files. so | |
464 | * cache the last lookup and compare with that before going through | |
465 | * everything again. | |
466 | */ | |
467 | if (mindev == last_mindev && majdev == last_majdev) | |
c97bd0fa | 468 | return last_du; |
9f8f2064 JA |
469 | |
470 | last_mindev = mindev; | |
471 | last_majdev = majdev; | |
5ec10eaa | 472 | |
9f8f2064 | 473 | sprintf(foo, "/sys/block"); |
ac0be2ac | 474 | if (!find_block_dir(majdev, mindev, foo, 1)) |
c97bd0fa | 475 | return NULL; |
9f8f2064 | 476 | |
c97bd0fa | 477 | return __init_per_file_disk_util(td, majdev, mindev, foo); |
67423013 | 478 | } |
9f8f2064 | 479 | |
c97bd0fa JA |
480 | static struct disk_util *__init_disk_util(struct thread_data *td, |
481 | struct fio_file *f) | |
67423013 ST |
482 | { |
483 | return init_per_file_disk_util(td, f->file_name); | |
9f8f2064 JA |
484 | } |
485 | ||
486 | void init_disk_util(struct thread_data *td) | |
487 | { | |
488 | struct fio_file *f; | |
489 | unsigned int i; | |
490 | ||
491 | if (!td->o.do_disk_util || | |
9b87f09b | 492 | td_ioengine_flagged(td, FIO_DISKLESSIO | FIO_NODISKUTIL)) |
9f8f2064 JA |
493 | return; |
494 | ||
495 | for_each_file(td, f, i) | |
c97bd0fa | 496 | f->du = __init_disk_util(td, f); |
9f8f2064 JA |
497 | } |
498 | ||
a666cab8 JA |
499 | static void show_agg_stats(struct disk_util_agg *agg, int terse, |
500 | struct buf_output *out) | |
d09a64a0 JA |
501 | { |
502 | if (!agg->slavecount) | |
503 | return; | |
504 | ||
f2f788dd | 505 | if (!terse) { |
a666cab8 | 506 | log_buf(out, ", aggrios=%llu/%llu, aggrmerge=%llu/%llu, " |
504bc961 JA |
507 | "aggrticks=%llu/%llu, aggrin_queue=%llu, " |
508 | "aggrutil=%3.2f%%", | |
509 | (unsigned long long) agg->ios[0] / agg->slavecount, | |
510 | (unsigned long long) agg->ios[1] / agg->slavecount, | |
511 | (unsigned long long) agg->merges[0] / agg->slavecount, | |
512 | (unsigned long long) agg->merges[1] / agg->slavecount, | |
513 | (unsigned long long) agg->ticks[0] / agg->slavecount, | |
514 | (unsigned long long) agg->ticks[1] / agg->slavecount, | |
515 | (unsigned long long) agg->time_in_queue / agg->slavecount, | |
516 | agg->max_util.u.f); | |
f2f788dd | 517 | } else { |
a666cab8 | 518 | log_buf(out, ";slaves;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%", |
504bc961 JA |
519 | (unsigned long long) agg->ios[0] / agg->slavecount, |
520 | (unsigned long long) agg->ios[1] / agg->slavecount, | |
521 | (unsigned long long) agg->merges[0] / agg->slavecount, | |
522 | (unsigned long long) agg->merges[1] / agg->slavecount, | |
523 | (unsigned long long) agg->ticks[0] / agg->slavecount, | |
524 | (unsigned long long) agg->ticks[1] / agg->slavecount, | |
525 | (unsigned long long) agg->time_in_queue / agg->slavecount, | |
526 | agg->max_util.u.f); | |
f2f788dd | 527 | } |
d09a64a0 JA |
528 | } |
529 | ||
043b74b9 ST |
530 | static void aggregate_slaves_stats(struct disk_util *masterdu) |
531 | { | |
d09a64a0 | 532 | struct disk_util_agg *agg = &masterdu->agg; |
043b74b9 ST |
533 | struct disk_util_stat *dus; |
534 | struct flist_head *entry; | |
535 | struct disk_util *slavedu; | |
d09a64a0 | 536 | double util; |
043b74b9 ST |
537 | |
538 | flist_for_each(entry, &masterdu->slaves) { | |
539 | slavedu = flist_entry(entry, struct disk_util, slavelist); | |
540 | dus = &slavedu->dus; | |
a3b4cf7d JA |
541 | agg->ios[0] += dus->s.ios[0]; |
542 | agg->ios[1] += dus->s.ios[1]; | |
543 | agg->merges[0] += dus->s.merges[0]; | |
544 | agg->merges[1] += dus->s.merges[1]; | |
545 | agg->sectors[0] += dus->s.sectors[0]; | |
546 | agg->sectors[1] += dus->s.sectors[1]; | |
547 | agg->ticks[0] += dus->s.ticks[0]; | |
548 | agg->ticks[1] += dus->s.ticks[1]; | |
549 | agg->time_in_queue += dus->s.time_in_queue; | |
d09a64a0 JA |
550 | agg->slavecount++; |
551 | ||
a3b4cf7d | 552 | util = (double) (100 * dus->s.io_ticks / (double) slavedu->dus.s.msec); |
043b74b9 ST |
553 | /* System utilization is the utilization of the |
554 | * component with the highest utilization. | |
555 | */ | |
d09a64a0 JA |
556 | if (util > agg->max_util.u.f) |
557 | agg->max_util.u.f = util; | |
043b74b9 ST |
558 | |
559 | } | |
560 | ||
d09a64a0 JA |
561 | if (agg->max_util.u.f > 100.0) |
562 | agg->max_util.u.f = 100.0; | |
563 | } | |
564 | ||
27357187 | 565 | void disk_util_prune_entries(void) |
d09a64a0 | 566 | { |
9ec7779f JA |
567 | fio_mutex_down(disk_util_mutex); |
568 | ||
d09a64a0 | 569 | while (!flist_empty(&disk_list)) { |
27357187 JA |
570 | struct disk_util *du; |
571 | ||
9342d5f8 | 572 | du = flist_first_entry(&disk_list, struct disk_util, list); |
d09a64a0 JA |
573 | flist_del(&du->list); |
574 | disk_util_free(du); | |
575 | } | |
043b74b9 | 576 | |
d09a64a0 | 577 | last_majdev = last_mindev = -1; |
9ec7779f JA |
578 | fio_mutex_up(disk_util_mutex); |
579 | fio_mutex_remove(disk_util_mutex); | |
d09a64a0 JA |
580 | } |
581 | ||
f2f788dd | 582 | void print_disk_util(struct disk_util_stat *dus, struct disk_util_agg *agg, |
a666cab8 | 583 | int terse, struct buf_output *out) |
d09a64a0 | 584 | { |
6914f59e | 585 | double util = 0; |
d09a64a0 | 586 | |
a3b4cf7d JA |
587 | if (dus->s.msec) |
588 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
d09a64a0 JA |
589 | if (util > 100.0) |
590 | util = 100.0; | |
591 | ||
f2f788dd | 592 | if (!terse) { |
f1d64553 | 593 | if (agg->slavecount) |
a666cab8 | 594 | log_buf(out, " "); |
f1d64553 | 595 | |
a666cab8 | 596 | log_buf(out, " %s: ios=%llu/%llu, merge=%llu/%llu, " |
504bc961 JA |
597 | "ticks=%llu/%llu, in_queue=%llu, util=%3.2f%%", |
598 | dus->name, | |
599 | (unsigned long long) dus->s.ios[0], | |
600 | (unsigned long long) dus->s.ios[1], | |
601 | (unsigned long long) dus->s.merges[0], | |
602 | (unsigned long long) dus->s.merges[1], | |
603 | (unsigned long long) dus->s.ticks[0], | |
604 | (unsigned long long) dus->s.ticks[1], | |
605 | (unsigned long long) dus->s.time_in_queue, | |
606 | util); | |
f2f788dd | 607 | } else { |
a666cab8 | 608 | log_buf(out, ";%s;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%", |
504bc961 JA |
609 | dus->name, |
610 | (unsigned long long) dus->s.ios[0], | |
611 | (unsigned long long) dus->s.ios[1], | |
612 | (unsigned long long) dus->s.merges[0], | |
613 | (unsigned long long) dus->s.merges[1], | |
614 | (unsigned long long) dus->s.ticks[0], | |
615 | (unsigned long long) dus->s.ticks[1], | |
616 | (unsigned long long) dus->s.time_in_queue, | |
617 | util); | |
f2f788dd | 618 | } |
d09a64a0 JA |
619 | |
620 | /* | |
621 | * If the device has slaves, aggregate the stats for | |
622 | * those slave devices also. | |
623 | */ | |
a666cab8 | 624 | show_agg_stats(agg, terse, out); |
d09a64a0 | 625 | |
f2f788dd | 626 | if (!terse) |
a666cab8 | 627 | log_buf(out, "\n"); |
043b74b9 ST |
628 | } |
629 | ||
952b05e0 CF |
630 | void json_array_add_disk_util(struct disk_util_stat *dus, |
631 | struct disk_util_agg *agg, struct json_array *array) | |
cc372b17 | 632 | { |
cc372b17 | 633 | struct json_object *obj; |
952b05e0 | 634 | double util = 0; |
cc372b17 | 635 | |
a3b4cf7d JA |
636 | if (dus->s.msec) |
637 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
cc372b17 SL |
638 | if (util > 100.0) |
639 | util = 100.0; | |
640 | ||
952b05e0 CF |
641 | obj = json_create_object(); |
642 | json_array_add_value_object(array, obj); | |
cc372b17 SL |
643 | |
644 | json_object_add_value_string(obj, "name", dus->name); | |
a3b4cf7d JA |
645 | json_object_add_value_int(obj, "read_ios", dus->s.ios[0]); |
646 | json_object_add_value_int(obj, "write_ios", dus->s.ios[1]); | |
647 | json_object_add_value_int(obj, "read_merges", dus->s.merges[0]); | |
648 | json_object_add_value_int(obj, "write_merges", dus->s.merges[1]); | |
649 | json_object_add_value_int(obj, "read_ticks", dus->s.ticks[0]); | |
650 | json_object_add_value_int(obj, "write_ticks", dus->s.ticks[1]); | |
651 | json_object_add_value_int(obj, "in_queue", dus->s.time_in_queue); | |
cc372b17 SL |
652 | json_object_add_value_float(obj, "util", util); |
653 | ||
654 | /* | |
655 | * If the device has slaves, aggregate the stats for | |
656 | * those slave devices also. | |
657 | */ | |
658 | if (!agg->slavecount) | |
659 | return; | |
660 | json_object_add_value_int(obj, "aggr_read_ios", | |
661 | agg->ios[0] / agg->slavecount); | |
662 | json_object_add_value_int(obj, "aggr_write_ios", | |
663 | agg->ios[1] / agg->slavecount); | |
664 | json_object_add_value_int(obj, "aggr_read_merges", | |
665 | agg->merges[0] / agg->slavecount); | |
666 | json_object_add_value_int(obj, "aggr_write_merge", | |
667 | agg->merges[1] / agg->slavecount); | |
668 | json_object_add_value_int(obj, "aggr_read_ticks", | |
669 | agg->ticks[0] / agg->slavecount); | |
670 | json_object_add_value_int(obj, "aggr_write_ticks", | |
671 | agg->ticks[1] / agg->slavecount); | |
672 | json_object_add_value_int(obj, "aggr_in_queue", | |
673 | agg->time_in_queue / agg->slavecount); | |
674 | json_object_add_value_float(obj, "aggr_util", agg->max_util.u.f); | |
675 | } | |
676 | ||
10aa136b JA |
677 | static void json_object_add_disk_utils(struct json_object *obj, |
678 | struct flist_head *head) | |
952b05e0 CF |
679 | { |
680 | struct json_array *array = json_create_array(); | |
681 | struct flist_head *entry; | |
682 | struct disk_util *du; | |
683 | ||
684 | json_object_add_value_array(obj, "disk_util", array); | |
685 | ||
686 | flist_for_each(entry, head) { | |
687 | du = flist_entry(entry, struct disk_util, list); | |
688 | ||
689 | aggregate_slaves_stats(du); | |
690 | json_array_add_disk_util(&du->dus, &du->agg, array); | |
691 | } | |
692 | } | |
693 | ||
a666cab8 JA |
694 | void show_disk_util(int terse, struct json_object *parent, |
695 | struct buf_output *out) | |
9f8f2064 | 696 | { |
d09a64a0 | 697 | struct flist_head *entry; |
9f8f2064 | 698 | struct disk_util *du; |
6efb21c2 | 699 | bool do_json; |
9f8f2064 | 700 | |
67a176fc JA |
701 | if (!disk_util_mutex) |
702 | return; | |
703 | ||
9ec7779f JA |
704 | fio_mutex_down(disk_util_mutex); |
705 | ||
706 | if (flist_empty(&disk_list)) { | |
707 | fio_mutex_up(disk_util_mutex); | |
0a839f30 | 708 | return; |
9ec7779f | 709 | } |
0a839f30 | 710 | |
6efb21c2 JA |
711 | if ((output_format & FIO_OUTPUT_JSON) && parent) |
712 | do_json = true; | |
713 | else | |
714 | do_json = false; | |
9edf7b3e | 715 | |
6efb21c2 | 716 | if (!terse && !do_json) |
a666cab8 | 717 | log_buf(out, "\nDisk stats (read/write):\n"); |
9f8f2064 | 718 | |
6efb21c2 | 719 | if (do_json) |
952b05e0 | 720 | json_object_add_disk_utils(parent, &disk_list); |
03d189b7 | 721 | else if (output_format & ~(FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS)) { |
952b05e0 CF |
722 | flist_for_each(entry, &disk_list) { |
723 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 724 | |
952b05e0 | 725 | aggregate_slaves_stats(du); |
a666cab8 | 726 | print_disk_util(&du->dus, &du->agg, terse, out); |
952b05e0 | 727 | } |
129fb2d4 | 728 | } |
9ec7779f JA |
729 | |
730 | fio_mutex_up(disk_util_mutex); | |
731 | } | |
732 | ||
733 | void setup_disk_util(void) | |
734 | { | |
521da527 | 735 | disk_util_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
9f8f2064 | 736 | } |