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); |
2a20eebc | 40 | free(du->sysfs_root); |
c97bd0fa JA |
41 | sfree(du); |
42 | } | |
43 | ||
9f8f2064 JA |
44 | static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus) |
45 | { | |
46 | unsigned in_flight; | |
d09a64a0 | 47 | unsigned long long sectors[2]; |
9f8f2064 JA |
48 | char line[256]; |
49 | FILE *f; | |
50 | char *p; | |
5ec10eaa | 51 | int ret; |
9f8f2064 | 52 | |
cd991b9e JA |
53 | dprint(FD_DISKUTIL, "open stat file: %s\n", du->path); |
54 | ||
9f8f2064 JA |
55 | f = fopen(du->path, "r"); |
56 | if (!f) | |
57 | return 1; | |
58 | ||
59 | p = fgets(line, sizeof(line), f); | |
60 | if (!p) { | |
61 | fclose(f); | |
62 | return 1; | |
63 | } | |
64 | ||
cd991b9e JA |
65 | dprint(FD_DISKUTIL, "%s: %s", du->path, p); |
66 | ||
504bc961 JA |
67 | ret = sscanf(p, "%llu %llu %llu %llu %llu %llu %llu %llu %u %llu %llu\n", |
68 | (unsigned long long *) &dus->s.ios[0], | |
69 | (unsigned long long *) &dus->s.merges[0], | |
70 | §ors[0], | |
71 | (unsigned long long *) &dus->s.ticks[0], | |
72 | (unsigned long long *) &dus->s.ios[1], | |
73 | (unsigned long long *) &dus->s.merges[1], | |
74 | §ors[1], | |
75 | (unsigned long long *) &dus->s.ticks[1], | |
76 | &in_flight, | |
77 | (unsigned long long *) &dus->s.io_ticks, | |
78 | (unsigned long long *) &dus->s.time_in_queue); | |
9f8f2064 | 79 | fclose(f); |
cd991b9e | 80 | dprint(FD_DISKUTIL, "%s: stat read ok? %d\n", du->path, ret == 1); |
a3b4cf7d JA |
81 | dus->s.sectors[0] = sectors[0]; |
82 | dus->s.sectors[1] = sectors[1]; | |
cd991b9e | 83 | return ret != 11; |
9f8f2064 JA |
84 | } |
85 | ||
86 | static void update_io_tick_disk(struct disk_util *du) | |
87 | { | |
88 | struct disk_util_stat __dus, *dus, *ldus; | |
89 | struct timeval t; | |
90 | ||
c97bd0fa JA |
91 | if (!du->users) |
92 | return; | |
90b97ac3 JA |
93 | if (get_io_ticks(du, &__dus)) |
94 | return; | |
9f8f2064 JA |
95 | |
96 | dus = &du->dus; | |
97 | ldus = &du->last_dus; | |
98 | ||
a3b4cf7d JA |
99 | dus->s.sectors[0] += (__dus.s.sectors[0] - ldus->s.sectors[0]); |
100 | dus->s.sectors[1] += (__dus.s.sectors[1] - ldus->s.sectors[1]); | |
101 | dus->s.ios[0] += (__dus.s.ios[0] - ldus->s.ios[0]); | |
102 | dus->s.ios[1] += (__dus.s.ios[1] - ldus->s.ios[1]); | |
103 | dus->s.merges[0] += (__dus.s.merges[0] - ldus->s.merges[0]); | |
104 | dus->s.merges[1] += (__dus.s.merges[1] - ldus->s.merges[1]); | |
105 | dus->s.ticks[0] += (__dus.s.ticks[0] - ldus->s.ticks[0]); | |
106 | dus->s.ticks[1] += (__dus.s.ticks[1] - ldus->s.ticks[1]); | |
107 | dus->s.io_ticks += (__dus.s.io_ticks - ldus->s.io_ticks); | |
108 | dus->s.time_in_queue += (__dus.s.time_in_queue - ldus->s.time_in_queue); | |
9f8f2064 JA |
109 | |
110 | fio_gettime(&t, NULL); | |
a3b4cf7d | 111 | dus->s.msec += mtime_since(&du->time, &t); |
9f8f2064 | 112 | memcpy(&du->time, &t, sizeof(t)); |
a3b4cf7d | 113 | memcpy(&ldus->s, &__dus.s, sizeof(__dus.s)); |
9f8f2064 JA |
114 | } |
115 | ||
9ec7779f | 116 | int update_io_ticks(void) |
9f8f2064 | 117 | { |
01743ee1 | 118 | struct flist_head *entry; |
9f8f2064 | 119 | struct disk_util *du; |
9ec7779f | 120 | int ret = 0; |
9f8f2064 | 121 | |
cd991b9e JA |
122 | dprint(FD_DISKUTIL, "update io ticks\n"); |
123 | ||
9ec7779f JA |
124 | fio_mutex_down(disk_util_mutex); |
125 | ||
a47591e4 | 126 | if (!helper_should_exit()) { |
9ec7779f JA |
127 | flist_for_each(entry, &disk_list) { |
128 | du = flist_entry(entry, struct disk_util, list); | |
129 | update_io_tick_disk(du); | |
130 | } | |
131 | } else | |
132 | ret = 1; | |
133 | ||
134 | fio_mutex_up(disk_util_mutex); | |
135 | return ret; | |
9f8f2064 JA |
136 | } |
137 | ||
e11c410c | 138 | static struct disk_util *disk_util_exists(int major, int minor) |
9f8f2064 | 139 | { |
01743ee1 | 140 | struct flist_head *entry; |
9f8f2064 JA |
141 | struct disk_util *du; |
142 | ||
9ec7779f JA |
143 | fio_mutex_down(disk_util_mutex); |
144 | ||
01743ee1 JA |
145 | flist_for_each(entry, &disk_list) { |
146 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 147 | |
9ec7779f JA |
148 | if (major == du->major && minor == du->minor) { |
149 | fio_mutex_up(disk_util_mutex); | |
e11c410c | 150 | return du; |
9ec7779f | 151 | } |
9f8f2064 JA |
152 | } |
153 | ||
9ec7779f | 154 | fio_mutex_up(disk_util_mutex); |
e11c410c | 155 | return NULL; |
9f8f2064 JA |
156 | } |
157 | ||
67423013 ST |
158 | static int get_device_numbers(char *file_name, int *maj, int *min) |
159 | { | |
160 | struct stat st; | |
161 | int majdev, mindev; | |
162 | char tempname[PATH_MAX], *p; | |
163 | ||
164 | if (!lstat(file_name, &st)) { | |
165 | if (S_ISBLK(st.st_mode)) { | |
166 | majdev = major(st.st_rdev); | |
167 | mindev = minor(st.st_rdev); | |
168 | } else if (S_ISCHR(st.st_mode)) { | |
169 | majdev = major(st.st_rdev); | |
170 | mindev = minor(st.st_rdev); | |
171 | if (fio_lookup_raw(st.st_rdev, &majdev, &mindev)) | |
172 | return -1; | |
173 | } else if (S_ISFIFO(st.st_mode)) | |
174 | return -1; | |
175 | else { | |
176 | majdev = major(st.st_dev); | |
177 | mindev = minor(st.st_dev); | |
178 | } | |
179 | } else { | |
180 | /* | |
181 | * must be a file, open "." in that path | |
182 | */ | |
087d0ed0 | 183 | tempname[PATH_MAX - 1] = '\0'; |
67423013 ST |
184 | strncpy(tempname, file_name, PATH_MAX - 1); |
185 | p = dirname(tempname); | |
186 | if (stat(p, &st)) { | |
187 | perror("disk util stat"); | |
188 | return -1; | |
189 | } | |
190 | ||
191 | majdev = major(st.st_dev); | |
192 | mindev = minor(st.st_dev); | |
193 | } | |
194 | ||
195 | *min = mindev; | |
196 | *maj = majdev; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static int read_block_dev_entry(char *path, int *maj, int *min) | |
202 | { | |
203 | char line[256], *p; | |
204 | FILE *f; | |
205 | ||
206 | f = fopen(path, "r"); | |
207 | if (!f) { | |
208 | perror("open path"); | |
209 | return 1; | |
210 | } | |
211 | ||
212 | p = fgets(line, sizeof(line), f); | |
213 | fclose(f); | |
214 | ||
215 | if (!p) | |
216 | return 1; | |
217 | ||
218 | if (sscanf(p, "%u:%u", maj, min) != 2) | |
219 | return 1; | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
67423013 | 224 | static void find_add_disk_slaves(struct thread_data *td, char *path, |
2db4ecca | 225 | struct disk_util *masterdu) |
67423013 ST |
226 | { |
227 | DIR *dirhandle = NULL; | |
228 | struct dirent *dirent = NULL; | |
229 | char slavesdir[PATH_MAX], temppath[PATH_MAX], slavepath[PATH_MAX]; | |
230 | struct disk_util *slavedu = NULL; | |
231 | int majdev, mindev; | |
232 | ssize_t linklen; | |
233 | ||
2db4ecca | 234 | sprintf(slavesdir, "%s/%s", path, "slaves"); |
67423013 ST |
235 | dirhandle = opendir(slavesdir); |
236 | if (!dirhandle) | |
237 | return; | |
238 | ||
239 | while ((dirent = readdir(dirhandle)) != NULL) { | |
2db4ecca JA |
240 | if (!strcmp(dirent->d_name, ".") || |
241 | !strcmp(dirent->d_name, "..")) | |
67423013 ST |
242 | continue; |
243 | ||
22497370 | 244 | sprintf(temppath, "%s/%s", slavesdir, dirent->d_name); |
67423013 ST |
245 | /* Can we always assume that the slaves device entries |
246 | * are links to the real directories for the slave | |
247 | * devices? | |
248 | */ | |
976406b8 | 249 | linklen = readlink(temppath, slavepath, PATH_MAX - 1); |
2db4ecca | 250 | if (linklen < 0) { |
67423013 | 251 | perror("readlink() for slave device."); |
f0cc675f | 252 | closedir(dirhandle); |
67423013 ST |
253 | return; |
254 | } | |
2db4ecca | 255 | slavepath[linklen] = '\0'; |
67423013 ST |
256 | |
257 | sprintf(temppath, "%s/%s/dev", slavesdir, slavepath); | |
258 | if (read_block_dev_entry(temppath, &majdev, &mindev)) { | |
259 | perror("Error getting slave device numbers."); | |
f0cc675f | 260 | closedir(dirhandle); |
67423013 ST |
261 | return; |
262 | } | |
263 | ||
b06de82e AB |
264 | /* |
265 | * See if this maj,min already exists | |
266 | */ | |
267 | slavedu = disk_util_exists(majdev, mindev); | |
268 | if (slavedu) | |
269 | continue; | |
270 | ||
22497370 | 271 | sprintf(temppath, "%s/%s", slavesdir, slavepath); |
67423013 ST |
272 | __init_per_file_disk_util(td, majdev, mindev, temppath); |
273 | slavedu = disk_util_exists(majdev, mindev); | |
274 | ||
275 | /* Should probably use an assert here. slavedu should | |
276 | * always be present at this point. */ | |
b8d541d5 JA |
277 | if (slavedu) { |
278 | slavedu->users++; | |
67423013 | 279 | flist_add_tail(&slavedu->slavelist, &masterdu->slaves); |
b8d541d5 | 280 | } |
67423013 ST |
281 | } |
282 | ||
283 | closedir(dirhandle); | |
67423013 ST |
284 | } |
285 | ||
b8fefc2b | 286 | static struct disk_util *disk_util_add(struct thread_data *td, int majdev, |
c97bd0fa | 287 | int mindev, char *path) |
9f8f2064 JA |
288 | { |
289 | struct disk_util *du, *__du; | |
01743ee1 | 290 | struct flist_head *entry; |
4b919f77 | 291 | int l; |
9f8f2064 | 292 | |
cd991b9e JA |
293 | dprint(FD_DISKUTIL, "add maj/min %d/%d: %s\n", majdev, mindev, path); |
294 | ||
c97bd0fa | 295 | du = smalloc(sizeof(*du)); |
81b3c86f | 296 | if (!du) |
fba5c5ff | 297 | return NULL; |
fba5c5ff | 298 | |
9f8f2064 | 299 | memset(du, 0, sizeof(*du)); |
01743ee1 | 300 | INIT_FLIST_HEAD(&du->list); |
4b919f77 KR |
301 | l = snprintf(du->path, sizeof(du->path), "%s/stat", path); |
302 | if (l < 0 || l >= sizeof(du->path)) { | |
303 | log_err("constructed path \"%.100s[...]/stat\" larger than buffer (%zu bytes)\n", | |
304 | path, sizeof(du->path) - 1); | |
305 | sfree(du); | |
306 | return NULL; | |
307 | } | |
a2ba41ed | 308 | strncpy((char *) du->dus.name, basename(path), FIO_DU_NAME_SZ - 1); |
2a20eebc | 309 | du->sysfs_root = strdup(path); |
9f8f2064 JA |
310 | du->major = majdev; |
311 | du->minor = mindev; | |
67423013 ST |
312 | INIT_FLIST_HEAD(&du->slavelist); |
313 | INIT_FLIST_HEAD(&du->slaves); | |
521da527 | 314 | du->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
c97bd0fa | 315 | du->users = 0; |
9f8f2064 | 316 | |
9ec7779f JA |
317 | fio_mutex_down(disk_util_mutex); |
318 | ||
01743ee1 JA |
319 | flist_for_each(entry, &disk_list) { |
320 | __du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 321 | |
d09a64a0 | 322 | dprint(FD_DISKUTIL, "found %s in list\n", __du->dus.name); |
cd991b9e | 323 | |
d09a64a0 | 324 | if (!strcmp((char *) du->dus.name, (char *) __du->dus.name)) { |
c97bd0fa | 325 | disk_util_free(du); |
9ec7779f | 326 | fio_mutex_up(disk_util_mutex); |
c97bd0fa | 327 | return __du; |
9f8f2064 JA |
328 | } |
329 | } | |
330 | ||
d09a64a0 | 331 | dprint(FD_DISKUTIL, "add %s to list\n", du->dus.name); |
cd991b9e | 332 | |
9f8f2064 JA |
333 | fio_gettime(&du->time, NULL); |
334 | get_io_ticks(du, &du->last_dus); | |
335 | ||
01743ee1 | 336 | flist_add_tail(&du->list, &disk_list); |
9ec7779f JA |
337 | fio_mutex_up(disk_util_mutex); |
338 | ||
67423013 | 339 | find_add_disk_slaves(td, path, du); |
c97bd0fa | 340 | return du; |
9f8f2064 JA |
341 | } |
342 | ||
343 | static int check_dev_match(int majdev, int mindev, char *path) | |
344 | { | |
345 | int major, minor; | |
9f8f2064 | 346 | |
67423013 | 347 | if (read_block_dev_entry(path, &major, &minor)) |
9f8f2064 | 348 | return 1; |
9f8f2064 | 349 | |
c97bd0fa | 350 | if (majdev == major && mindev == minor) |
9f8f2064 | 351 | return 0; |
9f8f2064 | 352 | |
9f8f2064 JA |
353 | return 1; |
354 | } | |
355 | ||
ac0be2ac | 356 | static int find_block_dir(int majdev, int mindev, char *path, int link_ok) |
9f8f2064 JA |
357 | { |
358 | struct dirent *dir; | |
359 | struct stat st; | |
360 | int found = 0; | |
361 | DIR *D; | |
362 | ||
363 | D = opendir(path); | |
364 | if (!D) | |
365 | return 0; | |
366 | ||
367 | while ((dir = readdir(D)) != NULL) { | |
368 | char full_path[256]; | |
369 | ||
370 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) | |
371 | continue; | |
372 | ||
22497370 | 373 | sprintf(full_path, "%s/%s", path, dir->d_name); |
9f8f2064 JA |
374 | |
375 | if (!strcmp(dir->d_name, "dev")) { | |
376 | if (!check_dev_match(majdev, mindev, full_path)) { | |
377 | found = 1; | |
378 | break; | |
379 | } | |
380 | } | |
381 | ||
ac0be2ac JA |
382 | if (link_ok) { |
383 | if (stat(full_path, &st) == -1) { | |
384 | perror("stat"); | |
385 | break; | |
386 | } | |
387 | } else { | |
388 | if (lstat(full_path, &st) == -1) { | |
389 | perror("stat"); | |
390 | break; | |
391 | } | |
9f8f2064 JA |
392 | } |
393 | ||
394 | if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)) | |
395 | continue; | |
396 | ||
ac0be2ac | 397 | found = find_block_dir(majdev, mindev, full_path, 0); |
9f8f2064 JA |
398 | if (found) { |
399 | strcpy(path, full_path); | |
400 | break; | |
401 | } | |
402 | } | |
403 | ||
404 | closedir(D); | |
405 | return found; | |
406 | } | |
407 | ||
c97bd0fa JA |
408 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
409 | int majdev, int mindev, | |
410 | char *path) | |
9f8f2064 JA |
411 | { |
412 | struct stat st; | |
67423013 | 413 | char tmp[PATH_MAX]; |
9f8f2064 JA |
414 | char *p; |
415 | ||
67423013 ST |
416 | /* |
417 | * If there's a ../queue/ directory there, we are inside a partition. | |
418 | * Check if that is the case and jump back. For loop/md/dm etc we | |
419 | * are already in the right spot. | |
420 | */ | |
421 | sprintf(tmp, "%s/../queue", path); | |
422 | if (!stat(tmp, &st)) { | |
423 | p = dirname(path); | |
424 | sprintf(tmp, "%s/queue", p); | |
425 | if (stat(tmp, &st)) { | |
426 | log_err("unknown sysfs layout\n"); | |
c97bd0fa | 427 | return NULL; |
9f8f2064 | 428 | } |
087d0ed0 | 429 | tmp[PATH_MAX - 1] = '\0'; |
67423013 ST |
430 | strncpy(tmp, p, PATH_MAX - 1); |
431 | sprintf(path, "%s", tmp); | |
9f8f2064 JA |
432 | } |
433 | ||
c97bd0fa | 434 | return disk_util_add(td, majdev, mindev, path); |
67423013 ST |
435 | } |
436 | ||
c97bd0fa JA |
437 | static struct disk_util *init_per_file_disk_util(struct thread_data *td, |
438 | char *filename) | |
67423013 ST |
439 | { |
440 | ||
441 | char foo[PATH_MAX]; | |
442 | struct disk_util *du; | |
443 | int mindev, majdev; | |
444 | ||
c97bd0fa JA |
445 | if (get_device_numbers(filename, &majdev, &mindev)) |
446 | return NULL; | |
67423013 ST |
447 | |
448 | dprint(FD_DISKUTIL, "%s belongs to maj/min %d/%d\n", filename, majdev, | |
449 | mindev); | |
cd991b9e | 450 | |
e11c410c | 451 | du = disk_util_exists(majdev, mindev); |
bd4d9bdc | 452 | if (du) |
c97bd0fa | 453 | return du; |
9f8f2064 JA |
454 | |
455 | /* | |
456 | * for an fs without a device, we will repeatedly stat through | |
457 | * sysfs which can take oodles of time for thousands of files. so | |
458 | * cache the last lookup and compare with that before going through | |
459 | * everything again. | |
460 | */ | |
461 | if (mindev == last_mindev && majdev == last_majdev) | |
c97bd0fa | 462 | return last_du; |
9f8f2064 JA |
463 | |
464 | last_mindev = mindev; | |
465 | last_majdev = majdev; | |
5ec10eaa | 466 | |
9f8f2064 | 467 | sprintf(foo, "/sys/block"); |
ac0be2ac | 468 | if (!find_block_dir(majdev, mindev, foo, 1)) |
c97bd0fa | 469 | return NULL; |
9f8f2064 | 470 | |
c97bd0fa | 471 | return __init_per_file_disk_util(td, majdev, mindev, foo); |
67423013 | 472 | } |
9f8f2064 | 473 | |
c97bd0fa JA |
474 | static struct disk_util *__init_disk_util(struct thread_data *td, |
475 | struct fio_file *f) | |
67423013 ST |
476 | { |
477 | return init_per_file_disk_util(td, f->file_name); | |
9f8f2064 JA |
478 | } |
479 | ||
480 | void init_disk_util(struct thread_data *td) | |
481 | { | |
482 | struct fio_file *f; | |
483 | unsigned int i; | |
484 | ||
485 | if (!td->o.do_disk_util || | |
9b87f09b | 486 | td_ioengine_flagged(td, FIO_DISKLESSIO | FIO_NODISKUTIL)) |
9f8f2064 JA |
487 | return; |
488 | ||
489 | for_each_file(td, f, i) | |
c97bd0fa | 490 | f->du = __init_disk_util(td, f); |
9f8f2064 JA |
491 | } |
492 | ||
a666cab8 JA |
493 | static void show_agg_stats(struct disk_util_agg *agg, int terse, |
494 | struct buf_output *out) | |
d09a64a0 JA |
495 | { |
496 | if (!agg->slavecount) | |
497 | return; | |
498 | ||
f2f788dd | 499 | if (!terse) { |
a666cab8 | 500 | log_buf(out, ", aggrios=%llu/%llu, aggrmerge=%llu/%llu, " |
504bc961 JA |
501 | "aggrticks=%llu/%llu, aggrin_queue=%llu, " |
502 | "aggrutil=%3.2f%%", | |
503 | (unsigned long long) agg->ios[0] / agg->slavecount, | |
504 | (unsigned long long) agg->ios[1] / agg->slavecount, | |
505 | (unsigned long long) agg->merges[0] / agg->slavecount, | |
506 | (unsigned long long) agg->merges[1] / agg->slavecount, | |
507 | (unsigned long long) agg->ticks[0] / agg->slavecount, | |
508 | (unsigned long long) agg->ticks[1] / agg->slavecount, | |
509 | (unsigned long long) agg->time_in_queue / agg->slavecount, | |
510 | agg->max_util.u.f); | |
f2f788dd | 511 | } else { |
a666cab8 | 512 | log_buf(out, ";slaves;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%", |
504bc961 JA |
513 | (unsigned long long) agg->ios[0] / agg->slavecount, |
514 | (unsigned long long) agg->ios[1] / agg->slavecount, | |
515 | (unsigned long long) agg->merges[0] / agg->slavecount, | |
516 | (unsigned long long) agg->merges[1] / agg->slavecount, | |
517 | (unsigned long long) agg->ticks[0] / agg->slavecount, | |
518 | (unsigned long long) agg->ticks[1] / agg->slavecount, | |
519 | (unsigned long long) agg->time_in_queue / agg->slavecount, | |
520 | agg->max_util.u.f); | |
f2f788dd | 521 | } |
d09a64a0 JA |
522 | } |
523 | ||
043b74b9 ST |
524 | static void aggregate_slaves_stats(struct disk_util *masterdu) |
525 | { | |
d09a64a0 | 526 | struct disk_util_agg *agg = &masterdu->agg; |
043b74b9 ST |
527 | struct disk_util_stat *dus; |
528 | struct flist_head *entry; | |
529 | struct disk_util *slavedu; | |
d09a64a0 | 530 | double util; |
043b74b9 ST |
531 | |
532 | flist_for_each(entry, &masterdu->slaves) { | |
533 | slavedu = flist_entry(entry, struct disk_util, slavelist); | |
534 | dus = &slavedu->dus; | |
a3b4cf7d JA |
535 | agg->ios[0] += dus->s.ios[0]; |
536 | agg->ios[1] += dus->s.ios[1]; | |
537 | agg->merges[0] += dus->s.merges[0]; | |
538 | agg->merges[1] += dus->s.merges[1]; | |
539 | agg->sectors[0] += dus->s.sectors[0]; | |
540 | agg->sectors[1] += dus->s.sectors[1]; | |
541 | agg->ticks[0] += dus->s.ticks[0]; | |
542 | agg->ticks[1] += dus->s.ticks[1]; | |
543 | agg->time_in_queue += dus->s.time_in_queue; | |
d09a64a0 JA |
544 | agg->slavecount++; |
545 | ||
a3b4cf7d | 546 | util = (double) (100 * dus->s.io_ticks / (double) slavedu->dus.s.msec); |
043b74b9 ST |
547 | /* System utilization is the utilization of the |
548 | * component with the highest utilization. | |
549 | */ | |
d09a64a0 JA |
550 | if (util > agg->max_util.u.f) |
551 | agg->max_util.u.f = util; | |
043b74b9 ST |
552 | |
553 | } | |
554 | ||
d09a64a0 JA |
555 | if (agg->max_util.u.f > 100.0) |
556 | agg->max_util.u.f = 100.0; | |
557 | } | |
558 | ||
27357187 | 559 | void disk_util_prune_entries(void) |
d09a64a0 | 560 | { |
9ec7779f JA |
561 | fio_mutex_down(disk_util_mutex); |
562 | ||
d09a64a0 | 563 | while (!flist_empty(&disk_list)) { |
27357187 JA |
564 | struct disk_util *du; |
565 | ||
9342d5f8 | 566 | du = flist_first_entry(&disk_list, struct disk_util, list); |
d09a64a0 JA |
567 | flist_del(&du->list); |
568 | disk_util_free(du); | |
569 | } | |
043b74b9 | 570 | |
d09a64a0 | 571 | last_majdev = last_mindev = -1; |
9ec7779f JA |
572 | fio_mutex_up(disk_util_mutex); |
573 | fio_mutex_remove(disk_util_mutex); | |
d09a64a0 JA |
574 | } |
575 | ||
f2f788dd | 576 | void print_disk_util(struct disk_util_stat *dus, struct disk_util_agg *agg, |
a666cab8 | 577 | int terse, struct buf_output *out) |
d09a64a0 | 578 | { |
6914f59e | 579 | double util = 0; |
d09a64a0 | 580 | |
a3b4cf7d JA |
581 | if (dus->s.msec) |
582 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
d09a64a0 JA |
583 | if (util > 100.0) |
584 | util = 100.0; | |
585 | ||
f2f788dd | 586 | if (!terse) { |
f1d64553 | 587 | if (agg->slavecount) |
a666cab8 | 588 | log_buf(out, " "); |
f1d64553 | 589 | |
a666cab8 | 590 | log_buf(out, " %s: ios=%llu/%llu, merge=%llu/%llu, " |
504bc961 JA |
591 | "ticks=%llu/%llu, in_queue=%llu, util=%3.2f%%", |
592 | dus->name, | |
593 | (unsigned long long) dus->s.ios[0], | |
594 | (unsigned long long) dus->s.ios[1], | |
595 | (unsigned long long) dus->s.merges[0], | |
596 | (unsigned long long) dus->s.merges[1], | |
597 | (unsigned long long) dus->s.ticks[0], | |
598 | (unsigned long long) dus->s.ticks[1], | |
599 | (unsigned long long) dus->s.time_in_queue, | |
600 | util); | |
f2f788dd | 601 | } else { |
a666cab8 | 602 | log_buf(out, ";%s;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%", |
504bc961 JA |
603 | dus->name, |
604 | (unsigned long long) dus->s.ios[0], | |
605 | (unsigned long long) dus->s.ios[1], | |
606 | (unsigned long long) dus->s.merges[0], | |
607 | (unsigned long long) dus->s.merges[1], | |
608 | (unsigned long long) dus->s.ticks[0], | |
609 | (unsigned long long) dus->s.ticks[1], | |
610 | (unsigned long long) dus->s.time_in_queue, | |
611 | util); | |
f2f788dd | 612 | } |
d09a64a0 JA |
613 | |
614 | /* | |
615 | * If the device has slaves, aggregate the stats for | |
616 | * those slave devices also. | |
617 | */ | |
a666cab8 | 618 | show_agg_stats(agg, terse, out); |
d09a64a0 | 619 | |
f2f788dd | 620 | if (!terse) |
a666cab8 | 621 | log_buf(out, "\n"); |
043b74b9 ST |
622 | } |
623 | ||
952b05e0 CF |
624 | void json_array_add_disk_util(struct disk_util_stat *dus, |
625 | struct disk_util_agg *agg, struct json_array *array) | |
cc372b17 | 626 | { |
cc372b17 | 627 | struct json_object *obj; |
952b05e0 | 628 | double util = 0; |
cc372b17 | 629 | |
a3b4cf7d JA |
630 | if (dus->s.msec) |
631 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
cc372b17 SL |
632 | if (util > 100.0) |
633 | util = 100.0; | |
634 | ||
952b05e0 CF |
635 | obj = json_create_object(); |
636 | json_array_add_value_object(array, obj); | |
cc372b17 SL |
637 | |
638 | json_object_add_value_string(obj, "name", dus->name); | |
a3b4cf7d JA |
639 | json_object_add_value_int(obj, "read_ios", dus->s.ios[0]); |
640 | json_object_add_value_int(obj, "write_ios", dus->s.ios[1]); | |
641 | json_object_add_value_int(obj, "read_merges", dus->s.merges[0]); | |
642 | json_object_add_value_int(obj, "write_merges", dus->s.merges[1]); | |
643 | json_object_add_value_int(obj, "read_ticks", dus->s.ticks[0]); | |
644 | json_object_add_value_int(obj, "write_ticks", dus->s.ticks[1]); | |
645 | json_object_add_value_int(obj, "in_queue", dus->s.time_in_queue); | |
cc372b17 SL |
646 | json_object_add_value_float(obj, "util", util); |
647 | ||
648 | /* | |
649 | * If the device has slaves, aggregate the stats for | |
650 | * those slave devices also. | |
651 | */ | |
652 | if (!agg->slavecount) | |
653 | return; | |
654 | json_object_add_value_int(obj, "aggr_read_ios", | |
655 | agg->ios[0] / agg->slavecount); | |
656 | json_object_add_value_int(obj, "aggr_write_ios", | |
657 | agg->ios[1] / agg->slavecount); | |
658 | json_object_add_value_int(obj, "aggr_read_merges", | |
659 | agg->merges[0] / agg->slavecount); | |
660 | json_object_add_value_int(obj, "aggr_write_merge", | |
661 | agg->merges[1] / agg->slavecount); | |
662 | json_object_add_value_int(obj, "aggr_read_ticks", | |
663 | agg->ticks[0] / agg->slavecount); | |
664 | json_object_add_value_int(obj, "aggr_write_ticks", | |
665 | agg->ticks[1] / agg->slavecount); | |
666 | json_object_add_value_int(obj, "aggr_in_queue", | |
667 | agg->time_in_queue / agg->slavecount); | |
668 | json_object_add_value_float(obj, "aggr_util", agg->max_util.u.f); | |
669 | } | |
670 | ||
10aa136b JA |
671 | static void json_object_add_disk_utils(struct json_object *obj, |
672 | struct flist_head *head) | |
952b05e0 CF |
673 | { |
674 | struct json_array *array = json_create_array(); | |
675 | struct flist_head *entry; | |
676 | struct disk_util *du; | |
677 | ||
678 | json_object_add_value_array(obj, "disk_util", array); | |
679 | ||
680 | flist_for_each(entry, head) { | |
681 | du = flist_entry(entry, struct disk_util, list); | |
682 | ||
683 | aggregate_slaves_stats(du); | |
684 | json_array_add_disk_util(&du->dus, &du->agg, array); | |
685 | } | |
686 | } | |
687 | ||
a666cab8 JA |
688 | void show_disk_util(int terse, struct json_object *parent, |
689 | struct buf_output *out) | |
9f8f2064 | 690 | { |
d09a64a0 | 691 | struct flist_head *entry; |
9f8f2064 | 692 | struct disk_util *du; |
6efb21c2 | 693 | bool do_json; |
9f8f2064 | 694 | |
67a176fc JA |
695 | if (!disk_util_mutex) |
696 | return; | |
697 | ||
9ec7779f JA |
698 | fio_mutex_down(disk_util_mutex); |
699 | ||
700 | if (flist_empty(&disk_list)) { | |
701 | fio_mutex_up(disk_util_mutex); | |
0a839f30 | 702 | return; |
9ec7779f | 703 | } |
0a839f30 | 704 | |
6efb21c2 JA |
705 | if ((output_format & FIO_OUTPUT_JSON) && parent) |
706 | do_json = true; | |
707 | else | |
708 | do_json = false; | |
9edf7b3e | 709 | |
6efb21c2 | 710 | if (!terse && !do_json) |
a666cab8 | 711 | log_buf(out, "\nDisk stats (read/write):\n"); |
9f8f2064 | 712 | |
6efb21c2 | 713 | if (do_json) |
952b05e0 | 714 | json_object_add_disk_utils(parent, &disk_list); |
03d189b7 | 715 | else if (output_format & ~(FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS)) { |
952b05e0 CF |
716 | flist_for_each(entry, &disk_list) { |
717 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 718 | |
952b05e0 | 719 | aggregate_slaves_stats(du); |
a666cab8 | 720 | print_disk_util(&du->dus, &du->agg, terse, out); |
952b05e0 | 721 | } |
129fb2d4 | 722 | } |
9ec7779f JA |
723 | |
724 | fio_mutex_up(disk_util_mutex); | |
725 | } | |
726 | ||
727 | void setup_disk_util(void) | |
728 | { | |
521da527 | 729 | disk_util_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
9f8f2064 | 730 | } |