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" |
9f8f2064 JA |
14 | |
15 | static int last_majdev, last_mindev; | |
c97bd0fa | 16 | static struct disk_util *last_du; |
9f8f2064 | 17 | |
9ec7779f | 18 | static struct fio_mutex *disk_util_mutex; |
9ec7779f | 19 | |
d09a64a0 | 20 | FLIST_HEAD(disk_list); |
9f8f2064 | 21 | |
2db4ecca JA |
22 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
23 | int majdev, int mindev, char *path); | |
24 | ||
c97bd0fa JA |
25 | static void disk_util_free(struct disk_util *du) |
26 | { | |
27 | if (du == last_du) | |
28 | last_du = NULL; | |
29 | ||
b8d541d5 JA |
30 | while (!flist_empty(&du->slaves)) { |
31 | struct disk_util *slave; | |
32 | ||
9342d5f8 | 33 | slave = flist_first_entry(&du->slaves, struct disk_util, slavelist); |
b8d541d5 JA |
34 | flist_del(&slave->slavelist); |
35 | slave->users--; | |
36 | } | |
93bcfd20 | 37 | |
c97bd0fa | 38 | fio_mutex_remove(du->lock); |
c97bd0fa JA |
39 | sfree(du); |
40 | } | |
41 | ||
9f8f2064 JA |
42 | static int get_io_ticks(struct disk_util *du, struct disk_util_stat *dus) |
43 | { | |
44 | unsigned in_flight; | |
d09a64a0 | 45 | unsigned long long sectors[2]; |
9f8f2064 JA |
46 | char line[256]; |
47 | FILE *f; | |
48 | char *p; | |
5ec10eaa | 49 | int ret; |
9f8f2064 | 50 | |
cd991b9e JA |
51 | dprint(FD_DISKUTIL, "open stat file: %s\n", du->path); |
52 | ||
9f8f2064 JA |
53 | f = fopen(du->path, "r"); |
54 | if (!f) | |
55 | return 1; | |
56 | ||
57 | p = fgets(line, sizeof(line), f); | |
58 | if (!p) { | |
59 | fclose(f); | |
60 | return 1; | |
61 | } | |
62 | ||
cd991b9e JA |
63 | dprint(FD_DISKUTIL, "%s: %s", du->path, p); |
64 | ||
a3b4cf7d JA |
65 | ret = sscanf(p, "%u %u %llu %u %u %u %llu %u %u %u %u\n", |
66 | &dus->s.ios[0], | |
67 | &dus->s.merges[0], §ors[0], | |
68 | &dus->s.ticks[0], &dus->s.ios[1], | |
69 | &dus->s.merges[1], §ors[1], | |
70 | &dus->s.ticks[1], &in_flight, | |
71 | &dus->s.io_ticks, | |
72 | &dus->s.time_in_queue); | |
9f8f2064 | 73 | fclose(f); |
cd991b9e | 74 | dprint(FD_DISKUTIL, "%s: stat read ok? %d\n", du->path, ret == 1); |
a3b4cf7d JA |
75 | dus->s.sectors[0] = sectors[0]; |
76 | dus->s.sectors[1] = sectors[1]; | |
cd991b9e | 77 | return ret != 11; |
9f8f2064 JA |
78 | } |
79 | ||
80 | static void update_io_tick_disk(struct disk_util *du) | |
81 | { | |
82 | struct disk_util_stat __dus, *dus, *ldus; | |
83 | struct timeval t; | |
84 | ||
c97bd0fa JA |
85 | if (!du->users) |
86 | return; | |
90b97ac3 JA |
87 | if (get_io_ticks(du, &__dus)) |
88 | return; | |
9f8f2064 JA |
89 | |
90 | dus = &du->dus; | |
91 | ldus = &du->last_dus; | |
92 | ||
a3b4cf7d JA |
93 | dus->s.sectors[0] += (__dus.s.sectors[0] - ldus->s.sectors[0]); |
94 | dus->s.sectors[1] += (__dus.s.sectors[1] - ldus->s.sectors[1]); | |
95 | dus->s.ios[0] += (__dus.s.ios[0] - ldus->s.ios[0]); | |
96 | dus->s.ios[1] += (__dus.s.ios[1] - ldus->s.ios[1]); | |
97 | dus->s.merges[0] += (__dus.s.merges[0] - ldus->s.merges[0]); | |
98 | dus->s.merges[1] += (__dus.s.merges[1] - ldus->s.merges[1]); | |
99 | dus->s.ticks[0] += (__dus.s.ticks[0] - ldus->s.ticks[0]); | |
100 | dus->s.ticks[1] += (__dus.s.ticks[1] - ldus->s.ticks[1]); | |
101 | dus->s.io_ticks += (__dus.s.io_ticks - ldus->s.io_ticks); | |
102 | dus->s.time_in_queue += (__dus.s.time_in_queue - ldus->s.time_in_queue); | |
9f8f2064 JA |
103 | |
104 | fio_gettime(&t, NULL); | |
a3b4cf7d | 105 | dus->s.msec += mtime_since(&du->time, &t); |
9f8f2064 | 106 | memcpy(&du->time, &t, sizeof(t)); |
a3b4cf7d | 107 | memcpy(&ldus->s, &__dus.s, sizeof(__dus.s)); |
9f8f2064 JA |
108 | } |
109 | ||
9ec7779f | 110 | int update_io_ticks(void) |
9f8f2064 | 111 | { |
01743ee1 | 112 | struct flist_head *entry; |
9f8f2064 | 113 | struct disk_util *du; |
9ec7779f | 114 | int ret = 0; |
9f8f2064 | 115 | |
cd991b9e JA |
116 | dprint(FD_DISKUTIL, "update io ticks\n"); |
117 | ||
9ec7779f JA |
118 | fio_mutex_down(disk_util_mutex); |
119 | ||
120 | if (!disk_util_exit) { | |
121 | flist_for_each(entry, &disk_list) { | |
122 | du = flist_entry(entry, struct disk_util, list); | |
123 | update_io_tick_disk(du); | |
124 | } | |
125 | } else | |
126 | ret = 1; | |
127 | ||
128 | fio_mutex_up(disk_util_mutex); | |
129 | return ret; | |
9f8f2064 JA |
130 | } |
131 | ||
e11c410c | 132 | static struct disk_util *disk_util_exists(int major, int minor) |
9f8f2064 | 133 | { |
01743ee1 | 134 | struct flist_head *entry; |
9f8f2064 JA |
135 | struct disk_util *du; |
136 | ||
9ec7779f JA |
137 | fio_mutex_down(disk_util_mutex); |
138 | ||
01743ee1 JA |
139 | flist_for_each(entry, &disk_list) { |
140 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 141 | |
9ec7779f JA |
142 | if (major == du->major && minor == du->minor) { |
143 | fio_mutex_up(disk_util_mutex); | |
e11c410c | 144 | return du; |
9ec7779f | 145 | } |
9f8f2064 JA |
146 | } |
147 | ||
9ec7779f | 148 | fio_mutex_up(disk_util_mutex); |
e11c410c | 149 | return NULL; |
9f8f2064 JA |
150 | } |
151 | ||
67423013 ST |
152 | static int get_device_numbers(char *file_name, int *maj, int *min) |
153 | { | |
154 | struct stat st; | |
155 | int majdev, mindev; | |
156 | char tempname[PATH_MAX], *p; | |
157 | ||
158 | if (!lstat(file_name, &st)) { | |
159 | if (S_ISBLK(st.st_mode)) { | |
160 | majdev = major(st.st_rdev); | |
161 | mindev = minor(st.st_rdev); | |
162 | } else if (S_ISCHR(st.st_mode)) { | |
163 | majdev = major(st.st_rdev); | |
164 | mindev = minor(st.st_rdev); | |
165 | if (fio_lookup_raw(st.st_rdev, &majdev, &mindev)) | |
166 | return -1; | |
167 | } else if (S_ISFIFO(st.st_mode)) | |
168 | return -1; | |
169 | else { | |
170 | majdev = major(st.st_dev); | |
171 | mindev = minor(st.st_dev); | |
172 | } | |
173 | } else { | |
174 | /* | |
175 | * must be a file, open "." in that path | |
176 | */ | |
177 | strncpy(tempname, file_name, PATH_MAX - 1); | |
178 | p = dirname(tempname); | |
179 | if (stat(p, &st)) { | |
180 | perror("disk util stat"); | |
181 | return -1; | |
182 | } | |
183 | ||
184 | majdev = major(st.st_dev); | |
185 | mindev = minor(st.st_dev); | |
186 | } | |
187 | ||
188 | *min = mindev; | |
189 | *maj = majdev; | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int read_block_dev_entry(char *path, int *maj, int *min) | |
195 | { | |
196 | char line[256], *p; | |
197 | FILE *f; | |
198 | ||
199 | f = fopen(path, "r"); | |
200 | if (!f) { | |
201 | perror("open path"); | |
202 | return 1; | |
203 | } | |
204 | ||
205 | p = fgets(line, sizeof(line), f); | |
206 | fclose(f); | |
207 | ||
208 | if (!p) | |
209 | return 1; | |
210 | ||
211 | if (sscanf(p, "%u:%u", maj, min) != 2) | |
212 | return 1; | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
67423013 | 217 | static void find_add_disk_slaves(struct thread_data *td, char *path, |
2db4ecca | 218 | struct disk_util *masterdu) |
67423013 ST |
219 | { |
220 | DIR *dirhandle = NULL; | |
221 | struct dirent *dirent = NULL; | |
222 | char slavesdir[PATH_MAX], temppath[PATH_MAX], slavepath[PATH_MAX]; | |
223 | struct disk_util *slavedu = NULL; | |
224 | int majdev, mindev; | |
225 | ssize_t linklen; | |
226 | ||
2db4ecca | 227 | sprintf(slavesdir, "%s/%s", path, "slaves"); |
67423013 ST |
228 | dirhandle = opendir(slavesdir); |
229 | if (!dirhandle) | |
230 | return; | |
231 | ||
232 | while ((dirent = readdir(dirhandle)) != NULL) { | |
2db4ecca JA |
233 | if (!strcmp(dirent->d_name, ".") || |
234 | !strcmp(dirent->d_name, "..")) | |
67423013 ST |
235 | continue; |
236 | ||
b9fd788f | 237 | sprintf(temppath, "%s%s%s", slavesdir, FIO_OS_PATH_SEPARATOR, dirent->d_name); |
67423013 ST |
238 | /* Can we always assume that the slaves device entries |
239 | * are links to the real directories for the slave | |
240 | * devices? | |
241 | */ | |
976406b8 | 242 | linklen = readlink(temppath, slavepath, PATH_MAX - 1); |
2db4ecca | 243 | if (linklen < 0) { |
67423013 | 244 | perror("readlink() for slave device."); |
f0cc675f | 245 | closedir(dirhandle); |
67423013 ST |
246 | return; |
247 | } | |
2db4ecca | 248 | slavepath[linklen] = '\0'; |
67423013 ST |
249 | |
250 | sprintf(temppath, "%s/%s/dev", slavesdir, slavepath); | |
251 | if (read_block_dev_entry(temppath, &majdev, &mindev)) { | |
252 | perror("Error getting slave device numbers."); | |
f0cc675f | 253 | closedir(dirhandle); |
67423013 ST |
254 | return; |
255 | } | |
256 | ||
b06de82e AB |
257 | /* |
258 | * See if this maj,min already exists | |
259 | */ | |
260 | slavedu = disk_util_exists(majdev, mindev); | |
261 | if (slavedu) | |
262 | continue; | |
263 | ||
b9fd788f | 264 | sprintf(temppath, "%s%s%s", slavesdir, FIO_OS_PATH_SEPARATOR, slavepath); |
67423013 ST |
265 | __init_per_file_disk_util(td, majdev, mindev, temppath); |
266 | slavedu = disk_util_exists(majdev, mindev); | |
267 | ||
268 | /* Should probably use an assert here. slavedu should | |
269 | * always be present at this point. */ | |
b8d541d5 JA |
270 | if (slavedu) { |
271 | slavedu->users++; | |
67423013 | 272 | flist_add_tail(&slavedu->slavelist, &masterdu->slaves); |
b8d541d5 | 273 | } |
67423013 ST |
274 | } |
275 | ||
276 | closedir(dirhandle); | |
67423013 ST |
277 | } |
278 | ||
b8fefc2b | 279 | static struct disk_util *disk_util_add(struct thread_data *td, int majdev, |
c97bd0fa | 280 | int mindev, char *path) |
9f8f2064 JA |
281 | { |
282 | struct disk_util *du, *__du; | |
01743ee1 | 283 | struct flist_head *entry; |
4b919f77 | 284 | int l; |
9f8f2064 | 285 | |
cd991b9e JA |
286 | dprint(FD_DISKUTIL, "add maj/min %d/%d: %s\n", majdev, mindev, path); |
287 | ||
c97bd0fa | 288 | du = smalloc(sizeof(*du)); |
fba5c5ff JA |
289 | if (!du) { |
290 | log_err("fio: smalloc() pool exhausted\n"); | |
291 | return NULL; | |
292 | } | |
293 | ||
9f8f2064 | 294 | memset(du, 0, sizeof(*du)); |
01743ee1 | 295 | INIT_FLIST_HEAD(&du->list); |
4b919f77 KR |
296 | l = snprintf(du->path, sizeof(du->path), "%s/stat", path); |
297 | if (l < 0 || l >= sizeof(du->path)) { | |
298 | log_err("constructed path \"%.100s[...]/stat\" larger than buffer (%zu bytes)\n", | |
299 | path, sizeof(du->path) - 1); | |
300 | sfree(du); | |
301 | return NULL; | |
302 | } | |
a2ba41ed | 303 | strncpy((char *) du->dus.name, basename(path), FIO_DU_NAME_SZ - 1); |
e11c410c | 304 | du->sysfs_root = path; |
9f8f2064 JA |
305 | du->major = majdev; |
306 | du->minor = mindev; | |
67423013 ST |
307 | INIT_FLIST_HEAD(&du->slavelist); |
308 | INIT_FLIST_HEAD(&du->slaves); | |
521da527 | 309 | du->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
c97bd0fa | 310 | du->users = 0; |
9f8f2064 | 311 | |
9ec7779f JA |
312 | fio_mutex_down(disk_util_mutex); |
313 | ||
01743ee1 JA |
314 | flist_for_each(entry, &disk_list) { |
315 | __du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 316 | |
d09a64a0 | 317 | dprint(FD_DISKUTIL, "found %s in list\n", __du->dus.name); |
cd991b9e | 318 | |
d09a64a0 | 319 | if (!strcmp((char *) du->dus.name, (char *) __du->dus.name)) { |
c97bd0fa | 320 | disk_util_free(du); |
9ec7779f | 321 | fio_mutex_up(disk_util_mutex); |
c97bd0fa | 322 | return __du; |
9f8f2064 JA |
323 | } |
324 | } | |
325 | ||
d09a64a0 | 326 | dprint(FD_DISKUTIL, "add %s to list\n", du->dus.name); |
cd991b9e | 327 | |
9f8f2064 JA |
328 | fio_gettime(&du->time, NULL); |
329 | get_io_ticks(du, &du->last_dus); | |
330 | ||
01743ee1 | 331 | flist_add_tail(&du->list, &disk_list); |
9ec7779f JA |
332 | fio_mutex_up(disk_util_mutex); |
333 | ||
67423013 | 334 | find_add_disk_slaves(td, path, du); |
c97bd0fa | 335 | return du; |
9f8f2064 JA |
336 | } |
337 | ||
338 | static int check_dev_match(int majdev, int mindev, char *path) | |
339 | { | |
340 | int major, minor; | |
9f8f2064 | 341 | |
67423013 | 342 | if (read_block_dev_entry(path, &major, &minor)) |
9f8f2064 | 343 | return 1; |
9f8f2064 | 344 | |
c97bd0fa | 345 | if (majdev == major && mindev == minor) |
9f8f2064 | 346 | return 0; |
9f8f2064 | 347 | |
9f8f2064 JA |
348 | return 1; |
349 | } | |
350 | ||
ac0be2ac | 351 | static int find_block_dir(int majdev, int mindev, char *path, int link_ok) |
9f8f2064 JA |
352 | { |
353 | struct dirent *dir; | |
354 | struct stat st; | |
355 | int found = 0; | |
356 | DIR *D; | |
357 | ||
358 | D = opendir(path); | |
359 | if (!D) | |
360 | return 0; | |
361 | ||
362 | while ((dir = readdir(D)) != NULL) { | |
363 | char full_path[256]; | |
364 | ||
365 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) | |
366 | continue; | |
367 | ||
b9fd788f | 368 | sprintf(full_path, "%s%s%s", path, FIO_OS_PATH_SEPARATOR, dir->d_name); |
9f8f2064 JA |
369 | |
370 | if (!strcmp(dir->d_name, "dev")) { | |
371 | if (!check_dev_match(majdev, mindev, full_path)) { | |
372 | found = 1; | |
373 | break; | |
374 | } | |
375 | } | |
376 | ||
ac0be2ac JA |
377 | if (link_ok) { |
378 | if (stat(full_path, &st) == -1) { | |
379 | perror("stat"); | |
380 | break; | |
381 | } | |
382 | } else { | |
383 | if (lstat(full_path, &st) == -1) { | |
384 | perror("stat"); | |
385 | break; | |
386 | } | |
9f8f2064 JA |
387 | } |
388 | ||
389 | if (!S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)) | |
390 | continue; | |
391 | ||
ac0be2ac | 392 | found = find_block_dir(majdev, mindev, full_path, 0); |
9f8f2064 JA |
393 | if (found) { |
394 | strcpy(path, full_path); | |
395 | break; | |
396 | } | |
397 | } | |
398 | ||
399 | closedir(D); | |
400 | return found; | |
401 | } | |
402 | ||
c97bd0fa JA |
403 | static struct disk_util *__init_per_file_disk_util(struct thread_data *td, |
404 | int majdev, int mindev, | |
405 | char *path) | |
9f8f2064 JA |
406 | { |
407 | struct stat st; | |
67423013 | 408 | char tmp[PATH_MAX]; |
9f8f2064 JA |
409 | char *p; |
410 | ||
67423013 ST |
411 | /* |
412 | * If there's a ../queue/ directory there, we are inside a partition. | |
413 | * Check if that is the case and jump back. For loop/md/dm etc we | |
414 | * are already in the right spot. | |
415 | */ | |
416 | sprintf(tmp, "%s/../queue", path); | |
417 | if (!stat(tmp, &st)) { | |
418 | p = dirname(path); | |
419 | sprintf(tmp, "%s/queue", p); | |
420 | if (stat(tmp, &st)) { | |
421 | log_err("unknown sysfs layout\n"); | |
c97bd0fa | 422 | return NULL; |
9f8f2064 | 423 | } |
67423013 ST |
424 | strncpy(tmp, p, PATH_MAX - 1); |
425 | sprintf(path, "%s", tmp); | |
9f8f2064 JA |
426 | } |
427 | ||
67423013 ST |
428 | if (td->o.ioscheduler && !td->sysfs_root) |
429 | td->sysfs_root = strdup(path); | |
430 | ||
c97bd0fa | 431 | return disk_util_add(td, majdev, mindev, path); |
67423013 ST |
432 | } |
433 | ||
c97bd0fa JA |
434 | static struct disk_util *init_per_file_disk_util(struct thread_data *td, |
435 | char *filename) | |
67423013 ST |
436 | { |
437 | ||
438 | char foo[PATH_MAX]; | |
439 | struct disk_util *du; | |
440 | int mindev, majdev; | |
441 | ||
c97bd0fa JA |
442 | if (get_device_numbers(filename, &majdev, &mindev)) |
443 | return NULL; | |
67423013 ST |
444 | |
445 | dprint(FD_DISKUTIL, "%s belongs to maj/min %d/%d\n", filename, majdev, | |
446 | mindev); | |
cd991b9e | 447 | |
e11c410c JA |
448 | du = disk_util_exists(majdev, mindev); |
449 | if (du) { | |
450 | if (td->o.ioscheduler && !td->sysfs_root) | |
451 | td->sysfs_root = strdup(du->sysfs_root); | |
452 | ||
c97bd0fa | 453 | return du; |
e11c410c | 454 | } |
9f8f2064 JA |
455 | |
456 | /* | |
457 | * for an fs without a device, we will repeatedly stat through | |
458 | * sysfs which can take oodles of time for thousands of files. so | |
459 | * cache the last lookup and compare with that before going through | |
460 | * everything again. | |
461 | */ | |
462 | if (mindev == last_mindev && majdev == last_majdev) | |
c97bd0fa | 463 | return last_du; |
9f8f2064 JA |
464 | |
465 | last_mindev = mindev; | |
466 | last_majdev = majdev; | |
5ec10eaa | 467 | |
9f8f2064 | 468 | sprintf(foo, "/sys/block"); |
ac0be2ac | 469 | if (!find_block_dir(majdev, mindev, foo, 1)) |
c97bd0fa | 470 | return NULL; |
9f8f2064 | 471 | |
c97bd0fa | 472 | return __init_per_file_disk_util(td, majdev, mindev, foo); |
67423013 | 473 | } |
9f8f2064 | 474 | |
c97bd0fa JA |
475 | static struct disk_util *__init_disk_util(struct thread_data *td, |
476 | struct fio_file *f) | |
67423013 ST |
477 | { |
478 | return init_per_file_disk_util(td, f->file_name); | |
9f8f2064 JA |
479 | } |
480 | ||
481 | void init_disk_util(struct thread_data *td) | |
482 | { | |
483 | struct fio_file *f; | |
484 | unsigned int i; | |
485 | ||
486 | if (!td->o.do_disk_util || | |
487 | (td->io_ops->flags & (FIO_DISKLESSIO | FIO_NODISKUTIL))) | |
488 | return; | |
489 | ||
490 | for_each_file(td, f, i) | |
c97bd0fa | 491 | f->du = __init_disk_util(td, f); |
9f8f2064 JA |
492 | } |
493 | ||
f2f788dd | 494 | static void show_agg_stats(struct disk_util_agg *agg, int terse) |
d09a64a0 JA |
495 | { |
496 | if (!agg->slavecount) | |
497 | return; | |
498 | ||
f2f788dd JA |
499 | if (!terse) { |
500 | log_info(", aggrios=%u/%u, aggrmerge=%u/%u, aggrticks=%u/%u," | |
501 | " aggrin_queue=%u, aggrutil=%3.2f%%", | |
502 | agg->ios[0] / agg->slavecount, | |
503 | agg->ios[1] / agg->slavecount, | |
504 | agg->merges[0] / agg->slavecount, | |
505 | agg->merges[1] / agg->slavecount, | |
506 | agg->ticks[0] / agg->slavecount, | |
507 | agg->ticks[1] / agg->slavecount, | |
508 | agg->time_in_queue / agg->slavecount, | |
509 | agg->max_util.u.f); | |
510 | } else { | |
97b007ec | 511 | log_info(";slaves;%u;%u;%u;%u;%u;%u;%u;%3.2f%%", |
f2f788dd JA |
512 | agg->ios[0] / agg->slavecount, |
513 | agg->ios[1] / agg->slavecount, | |
514 | agg->merges[0] / agg->slavecount, | |
515 | agg->merges[1] / agg->slavecount, | |
516 | agg->ticks[0] / agg->slavecount, | |
517 | agg->ticks[1] / agg->slavecount, | |
518 | agg->time_in_queue / agg->slavecount, | |
519 | agg->max_util.u.f); | |
520 | } | |
d09a64a0 JA |
521 | } |
522 | ||
043b74b9 ST |
523 | static void aggregate_slaves_stats(struct disk_util *masterdu) |
524 | { | |
d09a64a0 | 525 | struct disk_util_agg *agg = &masterdu->agg; |
043b74b9 ST |
526 | struct disk_util_stat *dus; |
527 | struct flist_head *entry; | |
528 | struct disk_util *slavedu; | |
d09a64a0 | 529 | double util; |
043b74b9 ST |
530 | |
531 | flist_for_each(entry, &masterdu->slaves) { | |
532 | slavedu = flist_entry(entry, struct disk_util, slavelist); | |
533 | dus = &slavedu->dus; | |
a3b4cf7d JA |
534 | agg->ios[0] += dus->s.ios[0]; |
535 | agg->ios[1] += dus->s.ios[1]; | |
536 | agg->merges[0] += dus->s.merges[0]; | |
537 | agg->merges[1] += dus->s.merges[1]; | |
538 | agg->sectors[0] += dus->s.sectors[0]; | |
539 | agg->sectors[1] += dus->s.sectors[1]; | |
540 | agg->ticks[0] += dus->s.ticks[0]; | |
541 | agg->ticks[1] += dus->s.ticks[1]; | |
542 | agg->time_in_queue += dus->s.time_in_queue; | |
d09a64a0 JA |
543 | agg->slavecount++; |
544 | ||
a3b4cf7d | 545 | util = (double) (100 * dus->s.io_ticks / (double) slavedu->dus.s.msec); |
043b74b9 ST |
546 | /* System utilization is the utilization of the |
547 | * component with the highest utilization. | |
548 | */ | |
d09a64a0 JA |
549 | if (util > agg->max_util.u.f) |
550 | agg->max_util.u.f = util; | |
043b74b9 ST |
551 | |
552 | } | |
553 | ||
d09a64a0 JA |
554 | if (agg->max_util.u.f > 100.0) |
555 | agg->max_util.u.f = 100.0; | |
556 | } | |
557 | ||
27357187 | 558 | void disk_util_prune_entries(void) |
d09a64a0 | 559 | { |
9ec7779f JA |
560 | fio_mutex_down(disk_util_mutex); |
561 | ||
d09a64a0 | 562 | while (!flist_empty(&disk_list)) { |
27357187 JA |
563 | struct disk_util *du; |
564 | ||
9342d5f8 | 565 | du = flist_first_entry(&disk_list, struct disk_util, list); |
d09a64a0 JA |
566 | flist_del(&du->list); |
567 | disk_util_free(du); | |
568 | } | |
043b74b9 | 569 | |
d09a64a0 | 570 | last_majdev = last_mindev = -1; |
9ec7779f JA |
571 | fio_mutex_up(disk_util_mutex); |
572 | fio_mutex_remove(disk_util_mutex); | |
d09a64a0 JA |
573 | } |
574 | ||
f2f788dd JA |
575 | void print_disk_util(struct disk_util_stat *dus, struct disk_util_agg *agg, |
576 | int terse) | |
d09a64a0 | 577 | { |
6914f59e | 578 | double util = 0; |
d09a64a0 | 579 | |
a3b4cf7d JA |
580 | if (dus->s.msec) |
581 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
d09a64a0 JA |
582 | if (util > 100.0) |
583 | util = 100.0; | |
584 | ||
f2f788dd | 585 | if (!terse) { |
f1d64553 JA |
586 | if (agg->slavecount) |
587 | log_info(" "); | |
588 | ||
f2f788dd JA |
589 | log_info(" %s: ios=%u/%u, merge=%u/%u, ticks=%u/%u, " |
590 | "in_queue=%u, util=%3.2f%%", dus->name, | |
a3b4cf7d JA |
591 | dus->s.ios[0], dus->s.ios[1], |
592 | dus->s.merges[0], dus->s.merges[1], | |
593 | dus->s.ticks[0], dus->s.ticks[1], | |
594 | dus->s.time_in_queue, util); | |
f2f788dd | 595 | } else { |
3d7cd9b4 | 596 | log_info(";%s;%u;%u;%u;%u;%u;%u;%u;%3.2f%%", |
a3b4cf7d JA |
597 | dus->name, dus->s.ios[0], |
598 | dus->s.ios[1], dus->s.merges[0], | |
599 | dus->s.merges[1], dus->s.ticks[0], | |
600 | dus->s.ticks[1], | |
601 | dus->s.time_in_queue, util); | |
f2f788dd | 602 | } |
d09a64a0 JA |
603 | |
604 | /* | |
605 | * If the device has slaves, aggregate the stats for | |
606 | * those slave devices also. | |
607 | */ | |
f1d64553 | 608 | show_agg_stats(agg, terse); |
d09a64a0 | 609 | |
f2f788dd JA |
610 | if (!terse) |
611 | log_info("\n"); | |
043b74b9 ST |
612 | } |
613 | ||
952b05e0 CF |
614 | void json_array_add_disk_util(struct disk_util_stat *dus, |
615 | struct disk_util_agg *agg, struct json_array *array) | |
cc372b17 | 616 | { |
cc372b17 | 617 | struct json_object *obj; |
952b05e0 | 618 | double util = 0; |
cc372b17 | 619 | |
a3b4cf7d JA |
620 | if (dus->s.msec) |
621 | util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec; | |
cc372b17 SL |
622 | if (util > 100.0) |
623 | util = 100.0; | |
624 | ||
952b05e0 CF |
625 | obj = json_create_object(); |
626 | json_array_add_value_object(array, obj); | |
cc372b17 SL |
627 | |
628 | json_object_add_value_string(obj, "name", dus->name); | |
a3b4cf7d JA |
629 | json_object_add_value_int(obj, "read_ios", dus->s.ios[0]); |
630 | json_object_add_value_int(obj, "write_ios", dus->s.ios[1]); | |
631 | json_object_add_value_int(obj, "read_merges", dus->s.merges[0]); | |
632 | json_object_add_value_int(obj, "write_merges", dus->s.merges[1]); | |
633 | json_object_add_value_int(obj, "read_ticks", dus->s.ticks[0]); | |
634 | json_object_add_value_int(obj, "write_ticks", dus->s.ticks[1]); | |
635 | json_object_add_value_int(obj, "in_queue", dus->s.time_in_queue); | |
cc372b17 SL |
636 | json_object_add_value_float(obj, "util", util); |
637 | ||
638 | /* | |
639 | * If the device has slaves, aggregate the stats for | |
640 | * those slave devices also. | |
641 | */ | |
642 | if (!agg->slavecount) | |
643 | return; | |
644 | json_object_add_value_int(obj, "aggr_read_ios", | |
645 | agg->ios[0] / agg->slavecount); | |
646 | json_object_add_value_int(obj, "aggr_write_ios", | |
647 | agg->ios[1] / agg->slavecount); | |
648 | json_object_add_value_int(obj, "aggr_read_merges", | |
649 | agg->merges[0] / agg->slavecount); | |
650 | json_object_add_value_int(obj, "aggr_write_merge", | |
651 | agg->merges[1] / agg->slavecount); | |
652 | json_object_add_value_int(obj, "aggr_read_ticks", | |
653 | agg->ticks[0] / agg->slavecount); | |
654 | json_object_add_value_int(obj, "aggr_write_ticks", | |
655 | agg->ticks[1] / agg->slavecount); | |
656 | json_object_add_value_int(obj, "aggr_in_queue", | |
657 | agg->time_in_queue / agg->slavecount); | |
658 | json_object_add_value_float(obj, "aggr_util", agg->max_util.u.f); | |
659 | } | |
660 | ||
10aa136b JA |
661 | static void json_object_add_disk_utils(struct json_object *obj, |
662 | struct flist_head *head) | |
952b05e0 CF |
663 | { |
664 | struct json_array *array = json_create_array(); | |
665 | struct flist_head *entry; | |
666 | struct disk_util *du; | |
667 | ||
668 | json_object_add_value_array(obj, "disk_util", array); | |
669 | ||
670 | flist_for_each(entry, head) { | |
671 | du = flist_entry(entry, struct disk_util, list); | |
672 | ||
673 | aggregate_slaves_stats(du); | |
674 | json_array_add_disk_util(&du->dus, &du->agg, array); | |
675 | } | |
676 | } | |
677 | ||
cc372b17 | 678 | void show_disk_util(int terse, struct json_object *parent) |
9f8f2064 | 679 | { |
d09a64a0 | 680 | struct flist_head *entry; |
9f8f2064 | 681 | struct disk_util *du; |
9f8f2064 | 682 | |
9ec7779f JA |
683 | fio_mutex_down(disk_util_mutex); |
684 | ||
685 | if (flist_empty(&disk_list)) { | |
686 | fio_mutex_up(disk_util_mutex); | |
0a839f30 | 687 | return; |
9ec7779f | 688 | } |
0a839f30 | 689 | |
9edf7b3e JA |
690 | if (output_format == FIO_OUTPUT_JSON) |
691 | assert(parent); | |
692 | ||
693 | if (!terse && output_format != FIO_OUTPUT_JSON) | |
f2f788dd | 694 | log_info("\nDisk stats (read/write):\n"); |
9f8f2064 | 695 | |
9edf7b3e | 696 | if (output_format == FIO_OUTPUT_JSON) |
952b05e0 | 697 | json_object_add_disk_utils(parent, &disk_list); |
9edf7b3e | 698 | else |
952b05e0 CF |
699 | flist_for_each(entry, &disk_list) { |
700 | du = flist_entry(entry, struct disk_util, list); | |
9f8f2064 | 701 | |
952b05e0 | 702 | aggregate_slaves_stats(du); |
cc372b17 | 703 | print_disk_util(&du->dus, &du->agg, terse); |
952b05e0 | 704 | } |
9ec7779f JA |
705 | |
706 | fio_mutex_up(disk_util_mutex); | |
707 | } | |
708 | ||
709 | void setup_disk_util(void) | |
710 | { | |
521da527 | 711 | disk_util_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
9f8f2064 | 712 | } |