Commit | Line | Data |
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c9fb4c5b JA |
1 | #include <stdio.h> |
2 | #include <errno.h> | |
3 | #include <assert.h> | |
4 | #include <stdlib.h> | |
5 | #include <stddef.h> | |
6 | #include <signal.h> | |
7 | #include <inttypes.h> | |
932131c9 | 8 | #include <math.h> |
c9fb4c5b JA |
9 | |
10 | #include <sys/types.h> | |
11 | #include <sys/stat.h> | |
12 | #include <sys/ioctl.h> | |
13 | #include <sys/syscall.h> | |
14 | #include <sys/resource.h> | |
c3e2fc25 | 15 | #include <sys/mman.h> |
e31b8288 | 16 | #include <sys/uio.h> |
c9fb4c5b JA |
17 | #include <linux/fs.h> |
18 | #include <fcntl.h> | |
19 | #include <unistd.h> | |
c9fb4c5b JA |
20 | #include <string.h> |
21 | #include <pthread.h> | |
22 | #include <sched.h> | |
23 | ||
74efb029 | 24 | #include "../arch/arch.h" |
57fa61f0 | 25 | #include "../lib/types.h" |
932131c9 JA |
26 | #include "../lib/roundup.h" |
27 | #include "../minmax.h" | |
f3e769a4 | 28 | #include "../os/linux/io_uring.h" |
ac122fea | 29 | |
e31b8288 | 30 | struct io_sq_ring { |
e2239016 JA |
31 | unsigned *head; |
32 | unsigned *tail; | |
33 | unsigned *ring_mask; | |
34 | unsigned *ring_entries; | |
ce1705de | 35 | unsigned *flags; |
e2239016 | 36 | unsigned *array; |
c9fb4c5b JA |
37 | }; |
38 | ||
e31b8288 | 39 | struct io_cq_ring { |
e2239016 JA |
40 | unsigned *head; |
41 | unsigned *tail; | |
42 | unsigned *ring_mask; | |
43 | unsigned *ring_entries; | |
f0403f94 | 44 | struct io_uring_cqe *cqes; |
c9fb4c5b JA |
45 | }; |
46 | ||
701d1277 | 47 | #define DEPTH 128 |
2e7888ef JA |
48 | #define BATCH_SUBMIT 32 |
49 | #define BATCH_COMPLETE 32 | |
c9fb4c5b JA |
50 | #define BS 4096 |
51 | ||
a7086591 JA |
52 | #define MAX_FDS 16 |
53 | ||
c3e2fc25 | 54 | static unsigned sq_ring_mask, cq_ring_mask; |
e39c34dc | 55 | |
a7086591 JA |
56 | struct file { |
57 | unsigned long max_blocks; | |
701d1277 | 58 | unsigned pending_ios; |
48e698fa JA |
59 | int real_fd; |
60 | int fixed_fd; | |
932131c9 | 61 | int fileno; |
a7086591 JA |
62 | }; |
63 | ||
932131c9 JA |
64 | #define PLAT_BITS 6 |
65 | #define PLAT_VAL (1 << PLAT_BITS) | |
66 | #define PLAT_GROUP_NR 29 | |
67 | #define PLAT_NR (PLAT_GROUP_NR * PLAT_VAL) | |
68 | ||
c9fb4c5b JA |
69 | struct submitter { |
70 | pthread_t thread; | |
f310970e | 71 | int ring_fd; |
54319661 | 72 | int index; |
e31b8288 | 73 | struct io_sq_ring sq_ring; |
f0403f94 | 74 | struct io_uring_sqe *sqes; |
e31b8288 | 75 | struct io_cq_ring cq_ring; |
c9fb4c5b | 76 | int inflight; |
932131c9 | 77 | int tid; |
c9fb4c5b JA |
78 | unsigned long reaps; |
79 | unsigned long done; | |
80 | unsigned long calls; | |
81 | volatile int finish; | |
701d1277 | 82 | |
48e698fa JA |
83 | __s32 *fds; |
84 | ||
932131c9 JA |
85 | unsigned long *clock_batch; |
86 | int clock_index; | |
87 | unsigned long *plat; | |
88 | ||
a7086591 JA |
89 | struct file files[MAX_FDS]; |
90 | unsigned nr_files; | |
91 | unsigned cur_file; | |
e39863e3 | 92 | struct iovec iovecs[]; |
c9fb4c5b JA |
93 | }; |
94 | ||
e39863e3 | 95 | static struct submitter *submitter; |
c9fb4c5b JA |
96 | static volatile int finish; |
97 | ||
e39863e3 KB |
98 | static int depth = DEPTH; |
99 | static int batch_submit = BATCH_SUBMIT; | |
100 | static int batch_complete = BATCH_COMPLETE; | |
5bd526f2 | 101 | static int bs = BS; |
f0403f94 | 102 | static int polled = 1; /* use IO polling */ |
701d1277 | 103 | static int fixedbufs = 1; /* use fixed user buffers */ |
8c5fa755 | 104 | static int register_files = 1; /* use fixed files */ |
f0403f94 | 105 | static int buffered = 0; /* use buffered IO, not O_DIRECT */ |
3d7d00a3 JA |
106 | static int sq_thread_poll = 0; /* use kernel submission/poller thread */ |
107 | static int sq_thread_cpu = -1; /* pin above thread to this CPU */ | |
8025517d | 108 | static int do_nop = 0; /* no-op SQ ring commands */ |
54319661 | 109 | static int nthreads = 1; |
932131c9 JA |
110 | static int stats = 0; /* generate IO stats */ |
111 | static unsigned long tsc_rate; | |
c9fb4c5b | 112 | |
203e4c26 JA |
113 | #define TSC_RATE_FILE "tsc-rate" |
114 | ||
84106576 | 115 | static int vectored = 1; |
b3915995 | 116 | |
932131c9 JA |
117 | static float plist[] = { 1.0, 5.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, |
118 | 80.0, 90.0, 95.0, 99.9, 99.5, 99.9, 99.95, 99.99 }; | |
119 | static int plist_len = 17; | |
120 | ||
121 | static unsigned long cycles_to_nsec(unsigned long cycles) | |
122 | { | |
123 | uint64_t val; | |
124 | ||
125 | if (!tsc_rate) | |
126 | return cycles; | |
127 | ||
128 | val = cycles * 1000000000ULL; | |
129 | return val / tsc_rate; | |
130 | } | |
131 | ||
132 | static unsigned long plat_idx_to_val(unsigned int idx) | |
133 | { | |
134 | unsigned int error_bits; | |
135 | unsigned long k, base; | |
136 | ||
137 | assert(idx < PLAT_NR); | |
138 | ||
139 | /* MSB <= (PLAT_BITS-1), cannot be rounded off. Use | |
140 | * all bits of the sample as index */ | |
141 | if (idx < (PLAT_VAL << 1)) | |
142 | return cycles_to_nsec(idx); | |
143 | ||
144 | /* Find the group and compute the minimum value of that group */ | |
145 | error_bits = (idx >> PLAT_BITS) - 1; | |
146 | base = ((unsigned long) 1) << (error_bits + PLAT_BITS); | |
147 | ||
148 | /* Find its bucket number of the group */ | |
149 | k = idx % PLAT_VAL; | |
150 | ||
151 | /* Return the mean of the range of the bucket */ | |
152 | return cycles_to_nsec(base + ((k + 0.5) * (1 << error_bits))); | |
153 | } | |
154 | ||
155 | unsigned int calc_clat_percentiles(unsigned long *io_u_plat, unsigned long nr, | |
156 | unsigned long **output, | |
157 | unsigned long *maxv, unsigned long *minv) | |
158 | { | |
159 | unsigned long sum = 0; | |
160 | unsigned int len = plist_len, i, j = 0; | |
161 | unsigned long *ovals = NULL; | |
162 | bool is_last; | |
163 | ||
164 | *minv = -1ULL; | |
165 | *maxv = 0; | |
166 | ||
167 | ovals = malloc(len * sizeof(*ovals)); | |
168 | if (!ovals) | |
169 | return 0; | |
170 | ||
171 | /* | |
172 | * Calculate bucket values, note down max and min values | |
173 | */ | |
174 | is_last = false; | |
175 | for (i = 0; i < PLAT_NR && !is_last; i++) { | |
176 | sum += io_u_plat[i]; | |
177 | while (sum >= ((long double) plist[j] / 100.0 * nr)) { | |
178 | assert(plist[j] <= 100.0); | |
179 | ||
180 | ovals[j] = plat_idx_to_val(i); | |
181 | if (ovals[j] < *minv) | |
182 | *minv = ovals[j]; | |
183 | if (ovals[j] > *maxv) | |
184 | *maxv = ovals[j]; | |
185 | ||
186 | is_last = (j == len - 1) != 0; | |
187 | if (is_last) | |
188 | break; | |
189 | ||
190 | j++; | |
191 | } | |
192 | } | |
193 | ||
194 | if (!is_last) | |
195 | fprintf(stderr, "error calculating latency percentiles\n"); | |
196 | ||
197 | *output = ovals; | |
198 | return len; | |
199 | } | |
200 | ||
201 | static void show_clat_percentiles(unsigned long *io_u_plat, unsigned long nr, | |
202 | unsigned int precision) | |
203 | { | |
204 | unsigned int divisor, len, i, j = 0; | |
205 | unsigned long minv, maxv; | |
206 | unsigned long *ovals; | |
207 | int per_line, scale_down, time_width; | |
208 | bool is_last; | |
209 | char fmt[32]; | |
210 | ||
211 | len = calc_clat_percentiles(io_u_plat, nr, &ovals, &maxv, &minv); | |
212 | if (!len || !ovals) | |
213 | goto out; | |
214 | ||
215 | if (!tsc_rate) { | |
216 | scale_down = 0; | |
217 | divisor = 1; | |
218 | printf(" percentiles (tsc ticks):\n |"); | |
219 | } else if (minv > 2000 && maxv > 99999) { | |
220 | scale_down = 1; | |
221 | divisor = 1000; | |
222 | printf(" percentiles (usec):\n |"); | |
223 | } else { | |
224 | scale_down = 0; | |
225 | divisor = 1; | |
226 | printf(" percentiles (nsec):\n |"); | |
227 | } | |
228 | ||
229 | time_width = max(5, (int) (log10(maxv / divisor) + 1)); | |
230 | snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3, | |
231 | precision, time_width); | |
232 | /* fmt will be something like " %5.2fth=[%4llu]%c" */ | |
233 | per_line = (80 - 7) / (precision + 10 + time_width); | |
234 | ||
235 | for (j = 0; j < len; j++) { | |
236 | /* for formatting */ | |
237 | if (j != 0 && (j % per_line) == 0) | |
238 | printf(" |"); | |
239 | ||
240 | /* end of the list */ | |
241 | is_last = (j == len - 1) != 0; | |
242 | ||
243 | for (i = 0; i < scale_down; i++) | |
244 | ovals[j] = (ovals[j] + 999) / 1000; | |
245 | ||
246 | printf(fmt, plist[j], ovals[j], is_last ? '\n' : ','); | |
247 | ||
248 | if (is_last) | |
249 | break; | |
250 | ||
251 | if ((j % per_line) == per_line - 1) /* for formatting */ | |
252 | printf("\n"); | |
253 | } | |
254 | ||
255 | out: | |
256 | free(ovals); | |
257 | } | |
258 | ||
259 | static unsigned int plat_val_to_idx(unsigned long val) | |
260 | { | |
261 | unsigned int msb, error_bits, base, offset, idx; | |
262 | ||
263 | /* Find MSB starting from bit 0 */ | |
264 | if (val == 0) | |
265 | msb = 0; | |
266 | else | |
267 | msb = (sizeof(val)*8) - __builtin_clzll(val) - 1; | |
268 | ||
269 | /* | |
270 | * MSB <= (PLAT_BITS-1), cannot be rounded off. Use | |
271 | * all bits of the sample as index | |
272 | */ | |
273 | if (msb <= PLAT_BITS) | |
274 | return val; | |
275 | ||
276 | /* Compute the number of error bits to discard*/ | |
277 | error_bits = msb - PLAT_BITS; | |
278 | ||
279 | /* Compute the number of buckets before the group */ | |
280 | base = (error_bits + 1) << PLAT_BITS; | |
281 | ||
282 | /* | |
283 | * Discard the error bits and apply the mask to find the | |
284 | * index for the buckets in the group | |
285 | */ | |
286 | offset = (PLAT_VAL - 1) & (val >> error_bits); | |
287 | ||
288 | /* Make sure the index does not exceed (array size - 1) */ | |
289 | idx = (base + offset) < (PLAT_NR - 1) ? | |
290 | (base + offset) : (PLAT_NR - 1); | |
291 | ||
292 | return idx; | |
293 | } | |
294 | ||
295 | static void add_stat(struct submitter *s, int clock_index, int nr) | |
296 | { | |
297 | #ifdef ARCH_HAVE_CPU_CLOCK | |
298 | unsigned long cycles; | |
299 | unsigned int pidx; | |
300 | ||
301 | cycles = get_cpu_clock(); | |
302 | cycles -= s->clock_batch[clock_index]; | |
303 | pidx = plat_val_to_idx(cycles); | |
304 | s->plat[pidx] += nr; | |
305 | #endif | |
306 | } | |
307 | ||
2ea53ca3 | 308 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 309 | { |
8025517d JA |
310 | if (do_nop) |
311 | return 0; | |
312 | ||
bfed648c | 313 | return syscall(__NR_io_uring_register, s->ring_fd, |
e39863e3 | 314 | IORING_REGISTER_BUFFERS, s->iovecs, depth); |
2ea53ca3 JA |
315 | } |
316 | ||
a7abc9fb JA |
317 | static int io_uring_register_files(struct submitter *s) |
318 | { | |
48e698fa | 319 | int i; |
a7abc9fb | 320 | |
8025517d JA |
321 | if (do_nop) |
322 | return 0; | |
323 | ||
48e698fa JA |
324 | s->fds = calloc(s->nr_files, sizeof(__s32)); |
325 | for (i = 0; i < s->nr_files; i++) { | |
326 | s->fds[i] = s->files[i].real_fd; | |
327 | s->files[i].fixed_fd = i; | |
328 | } | |
a7abc9fb | 329 | |
bfed648c | 330 | return syscall(__NR_io_uring_register, s->ring_fd, |
919850d2 | 331 | IORING_REGISTER_FILES, s->fds, s->nr_files); |
a7abc9fb JA |
332 | } |
333 | ||
2ea53ca3 JA |
334 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) |
335 | { | |
bfed648c | 336 | return syscall(__NR_io_uring_setup, entries, p); |
c9fb4c5b JA |
337 | } |
338 | ||
b3915995 JA |
339 | static void io_uring_probe(int fd) |
340 | { | |
341 | struct io_uring_probe *p; | |
342 | int ret; | |
343 | ||
344 | p = malloc(sizeof(*p) + 256 * sizeof(struct io_uring_probe_op)); | |
345 | if (!p) | |
346 | return; | |
347 | ||
348 | memset(p, 0, sizeof(*p) + 256 * sizeof(struct io_uring_probe_op)); | |
349 | ret = syscall(__NR_io_uring_register, fd, IORING_REGISTER_PROBE, p, 256); | |
350 | if (ret < 0) | |
351 | goto out; | |
352 | ||
353 | if (IORING_OP_READ > p->ops_len) | |
354 | goto out; | |
355 | ||
356 | if ((p->ops[IORING_OP_READ].flags & IO_URING_OP_SUPPORTED)) | |
84106576 | 357 | vectored = 0; |
b3915995 JA |
358 | out: |
359 | free(p); | |
360 | } | |
361 | ||
c3e2fc25 JA |
362 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
363 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 364 | { |
bfed648c JA |
365 | return syscall(__NR_io_uring_enter, s->ring_fd, to_submit, min_complete, |
366 | flags, NULL, 0); | |
c9fb4c5b JA |
367 | } |
368 | ||
77d814a1 | 369 | #ifndef CONFIG_HAVE_GETTID |
c9fb4c5b JA |
370 | static int gettid(void) |
371 | { | |
372 | return syscall(__NR_gettid); | |
373 | } | |
77d814a1 | 374 | #endif |
c9fb4c5b | 375 | |
701d1277 JA |
376 | static unsigned file_depth(struct submitter *s) |
377 | { | |
e39863e3 | 378 | return (depth + s->nr_files - 1) / s->nr_files; |
701d1277 JA |
379 | } |
380 | ||
a7086591 | 381 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 382 | { |
f0403f94 | 383 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 384 | unsigned long offset; |
a7086591 | 385 | struct file *f; |
c9fb4c5b JA |
386 | long r; |
387 | ||
8025517d JA |
388 | if (do_nop) { |
389 | sqe->opcode = IORING_OP_NOP; | |
390 | return; | |
391 | } | |
392 | ||
701d1277 JA |
393 | if (s->nr_files == 1) { |
394 | f = &s->files[0]; | |
395 | } else { | |
396 | f = &s->files[s->cur_file]; | |
397 | if (f->pending_ios >= file_depth(s)) { | |
398 | s->cur_file++; | |
399 | if (s->cur_file == s->nr_files) | |
400 | s->cur_file = 0; | |
93d1811c | 401 | f = &s->files[s->cur_file]; |
701d1277 JA |
402 | } |
403 | } | |
404 | f->pending_ios++; | |
a7086591 | 405 | |
5e8865c0 | 406 | r = lrand48(); |
5bd526f2 | 407 | offset = (r % (f->max_blocks - 1)) * bs; |
c9fb4c5b | 408 | |
8c5fa755 JA |
409 | if (register_files) { |
410 | sqe->flags = IOSQE_FIXED_FILE; | |
411 | sqe->fd = f->fixed_fd; | |
412 | } else { | |
413 | sqe->flags = 0; | |
414 | sqe->fd = f->real_fd; | |
415 | } | |
f0403f94 | 416 | if (fixedbufs) { |
48e698fa | 417 | sqe->opcode = IORING_OP_READ_FIXED; |
919850d2 | 418 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; |
5bd526f2 | 419 | sqe->len = bs; |
2ea53ca3 | 420 | sqe->buf_index = index; |
84106576 | 421 | } else if (!vectored) { |
b3915995 JA |
422 | sqe->opcode = IORING_OP_READ; |
423 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; | |
424 | sqe->len = bs; | |
425 | sqe->buf_index = 0; | |
84106576 JA |
426 | } else { |
427 | sqe->opcode = IORING_OP_READV; | |
428 | sqe->addr = (unsigned long) &s->iovecs[index]; | |
429 | sqe->len = 1; | |
430 | sqe->buf_index = 0; | |
f0403f94 | 431 | } |
f0403f94 | 432 | sqe->ioprio = 0; |
f0403f94 | 433 | sqe->off = offset; |
932131c9 JA |
434 | sqe->user_data = (unsigned long) f->fileno; |
435 | if (stats) | |
436 | sqe->user_data |= ((unsigned long)s->clock_index << 32); | |
c9fb4c5b JA |
437 | } |
438 | ||
a7086591 | 439 | static int prep_more_ios(struct submitter *s, int max_ios) |
c9fb4c5b | 440 | { |
e31b8288 | 441 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 442 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 443 | |
c3e2fc25 | 444 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
445 | do { |
446 | next_tail++; | |
fc2dc21b | 447 | if (next_tail == atomic_load_acquire(ring->head)) |
c9fb4c5b JA |
448 | break; |
449 | ||
e39c34dc | 450 | index = tail & sq_ring_mask; |
a7086591 | 451 | init_io(s, index); |
c3e2fc25 | 452 | ring->array[index] = index; |
c9fb4c5b JA |
453 | prepped++; |
454 | tail = next_tail; | |
455 | } while (prepped < max_ios); | |
456 | ||
fc2dc21b JA |
457 | if (prepped) |
458 | atomic_store_release(ring->tail, tail); | |
c9fb4c5b JA |
459 | return prepped; |
460 | } | |
461 | ||
a7086591 | 462 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
463 | { |
464 | struct stat st; | |
465 | ||
48e698fa | 466 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
467 | return -1; |
468 | if (S_ISBLK(st.st_mode)) { | |
469 | unsigned long long bytes; | |
470 | ||
48e698fa | 471 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
472 | return -1; |
473 | ||
5bd526f2 | 474 | f->max_blocks = bytes / bs; |
c9fb4c5b JA |
475 | return 0; |
476 | } else if (S_ISREG(st.st_mode)) { | |
5bd526f2 | 477 | f->max_blocks = st.st_size / bs; |
c9fb4c5b JA |
478 | return 0; |
479 | } | |
480 | ||
481 | return -1; | |
482 | } | |
483 | ||
484 | static int reap_events(struct submitter *s) | |
485 | { | |
e31b8288 | 486 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 487 | struct io_uring_cqe *cqe; |
e2239016 | 488 | unsigned head, reaped = 0; |
ab85494f | 489 | int last_idx = -1, stat_nr = 0; |
c9fb4c5b | 490 | |
c3e2fc25 | 491 | head = *ring->head; |
c9fb4c5b | 492 | do { |
701d1277 JA |
493 | struct file *f; |
494 | ||
679d8352 | 495 | read_barrier(); |
fc2dc21b | 496 | if (head == atomic_load_acquire(ring->tail)) |
c9fb4c5b | 497 | break; |
f0403f94 | 498 | cqe = &ring->cqes[head & cq_ring_mask]; |
8025517d | 499 | if (!do_nop) { |
932131c9 JA |
500 | int fileno = cqe->user_data & 0xffffffff; |
501 | ||
502 | f = &s->files[fileno]; | |
8025517d | 503 | f->pending_ios--; |
5bd526f2 | 504 | if (cqe->res != bs) { |
8025517d | 505 | printf("io: unexpected ret=%d\n", cqe->res); |
154a9582 | 506 | if (polled && cqe->res == -EOPNOTSUPP) |
8066f6b6 | 507 | printf("Your filesystem/driver/kernel doesn't support polled IO\n"); |
8025517d JA |
508 | return -1; |
509 | } | |
c9fb4c5b | 510 | } |
932131c9 JA |
511 | if (stats) { |
512 | int clock_index = cqe->user_data >> 32; | |
513 | ||
ab85494f JA |
514 | if (last_idx != clock_index) { |
515 | if (last_idx != -1) { | |
516 | add_stat(s, last_idx, stat_nr); | |
517 | stat_nr = 0; | |
518 | } | |
519 | last_idx = clock_index; | |
520 | } | |
521 | stat_nr++; | |
932131c9 JA |
522 | add_stat(s, clock_index, 1); |
523 | } | |
c9fb4c5b JA |
524 | reaped++; |
525 | head++; | |
c9fb4c5b JA |
526 | } while (1); |
527 | ||
ab85494f JA |
528 | if (stat_nr) |
529 | add_stat(s, last_idx, stat_nr); | |
530 | ||
fc2dc21b JA |
531 | if (reaped) { |
532 | s->inflight -= reaped; | |
533 | atomic_store_release(ring->head, head); | |
534 | } | |
c9fb4c5b JA |
535 | return reaped; |
536 | } | |
537 | ||
538 | static void *submitter_fn(void *data) | |
539 | { | |
540 | struct submitter *s = data; | |
ce1705de | 541 | struct io_sq_ring *ring = &s->sq_ring; |
932131c9 | 542 | int i, ret, prepped, nr_batch; |
c9fb4c5b | 543 | |
932131c9 JA |
544 | s->tid = gettid(); |
545 | printf("submitter=%d\n", s->tid); | |
c9fb4c5b | 546 | |
5e8865c0 | 547 | srand48(pthread_self()); |
c9fb4c5b | 548 | |
932131c9 JA |
549 | for (i = 0; i < MAX_FDS; i++) |
550 | s->files[i].fileno = i; | |
551 | ||
552 | if (stats) { | |
553 | nr_batch = roundup_pow2(depth / batch_submit); | |
554 | s->clock_batch = calloc(nr_batch, sizeof(unsigned long)); | |
555 | s->clock_index = 0; | |
556 | ||
557 | s->plat = calloc(PLAT_NR, sizeof(unsigned long)); | |
558 | } else { | |
559 | s->clock_batch = NULL; | |
560 | s->plat = NULL; | |
561 | nr_batch = 0; | |
562 | } | |
563 | ||
c9fb4c5b JA |
564 | prepped = 0; |
565 | do { | |
f310970e | 566 | int to_wait, to_submit, this_reap, to_prep; |
fc2dc21b | 567 | unsigned ring_flags = 0; |
c9fb4c5b | 568 | |
e39863e3 KB |
569 | if (!prepped && s->inflight < depth) { |
570 | to_prep = min(depth - s->inflight, batch_submit); | |
a7086591 | 571 | prepped = prep_more_ios(s, to_prep); |
932131c9 JA |
572 | #ifdef ARCH_HAVE_CPU_CLOCK |
573 | if (prepped && stats) { | |
574 | s->clock_batch[s->clock_index] = get_cpu_clock(); | |
575 | s->clock_index = (s->clock_index + 1) & (nr_batch - 1); | |
576 | } | |
577 | #endif | |
f310970e | 578 | } |
c9fb4c5b JA |
579 | s->inflight += prepped; |
580 | submit_more: | |
581 | to_submit = prepped; | |
582 | submit: | |
e39863e3 | 583 | if (to_submit && (s->inflight + to_submit <= depth)) |
c9fb4c5b JA |
584 | to_wait = 0; |
585 | else | |
e39863e3 | 586 | to_wait = min(s->inflight + to_submit, batch_complete); |
c9fb4c5b | 587 | |
ce1705de JA |
588 | /* |
589 | * Only need to call io_uring_enter if we're not using SQ thread | |
590 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
591 | */ | |
fc2dc21b JA |
592 | if (sq_thread_poll) |
593 | ring_flags = atomic_load_acquire(ring->flags); | |
594 | if (!sq_thread_poll || ring_flags & IORING_SQ_NEED_WAKEUP) { | |
e0abe388 JA |
595 | unsigned flags = 0; |
596 | ||
597 | if (to_wait) | |
598 | flags = IORING_ENTER_GETEVENTS; | |
fc2dc21b | 599 | if (ring_flags & IORING_SQ_NEED_WAKEUP) |
b532dd6d | 600 | flags |= IORING_ENTER_SQ_WAKEUP; |
e0abe388 | 601 | ret = io_uring_enter(s, to_submit, to_wait, flags); |
ce1705de | 602 | s->calls++; |
fc2dc21b JA |
603 | } else { |
604 | /* for SQPOLL, we submitted it all effectively */ | |
605 | ret = to_submit; | |
ce1705de | 606 | } |
c9fb4c5b | 607 | |
ce1705de JA |
608 | /* |
609 | * For non SQ thread poll, we already got the events we needed | |
610 | * through the io_uring_enter() above. For SQ thread poll, we | |
611 | * need to loop here until we find enough events. | |
612 | */ | |
613 | this_reap = 0; | |
614 | do { | |
615 | int r; | |
616 | r = reap_events(s); | |
7d1435e6 JA |
617 | if (r == -1) { |
618 | s->finish = 1; | |
ce1705de | 619 | break; |
7d1435e6 | 620 | } else if (r > 0) |
ce1705de JA |
621 | this_reap += r; |
622 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
623 | s->reaps += this_reap; |
624 | ||
625 | if (ret >= 0) { | |
626 | if (!ret) { | |
627 | to_submit = 0; | |
628 | if (s->inflight) | |
629 | goto submit; | |
630 | continue; | |
631 | } else if (ret < to_submit) { | |
632 | int diff = to_submit - ret; | |
633 | ||
634 | s->done += ret; | |
635 | prepped -= diff; | |
636 | goto submit_more; | |
637 | } | |
638 | s->done += ret; | |
639 | prepped = 0; | |
640 | continue; | |
641 | } else if (ret < 0) { | |
ac122fea | 642 | if (errno == EAGAIN) { |
c9fb4c5b JA |
643 | if (s->finish) |
644 | break; | |
645 | if (this_reap) | |
646 | goto submit; | |
c9fb4c5b JA |
647 | to_submit = 0; |
648 | goto submit; | |
649 | } | |
ac122fea | 650 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
651 | break; |
652 | } | |
653 | } while (!s->finish); | |
a7086591 | 654 | |
c9fb4c5b JA |
655 | finish = 1; |
656 | return NULL; | |
657 | } | |
658 | ||
54319661 JA |
659 | static struct submitter *get_submitter(int offset) |
660 | { | |
661 | void *ret; | |
662 | ||
663 | ret = submitter; | |
664 | if (offset) | |
665 | ret += offset * (sizeof(*submitter) + depth * sizeof(struct iovec)); | |
666 | return ret; | |
667 | } | |
668 | ||
c9fb4c5b JA |
669 | static void sig_int(int sig) |
670 | { | |
54319661 JA |
671 | int j; |
672 | ||
c9fb4c5b | 673 | printf("Exiting on signal %d\n", sig); |
54319661 JA |
674 | for (j = 0; j < nthreads; j++) { |
675 | struct submitter *s = get_submitter(j); | |
676 | s->finish = 1; | |
677 | } | |
c9fb4c5b JA |
678 | finish = 1; |
679 | } | |
680 | ||
681 | static void arm_sig_int(void) | |
682 | { | |
683 | struct sigaction act; | |
684 | ||
685 | memset(&act, 0, sizeof(act)); | |
686 | act.sa_handler = sig_int; | |
687 | act.sa_flags = SA_RESTART; | |
688 | sigaction(SIGINT, &act, NULL); | |
2cf71009 BP |
689 | |
690 | /* Windows uses SIGBREAK as a quit signal from other applications */ | |
691 | #ifdef WIN32 | |
692 | sigaction(SIGBREAK, &act, NULL); | |
693 | #endif | |
c9fb4c5b JA |
694 | } |
695 | ||
c3e2fc25 JA |
696 | static int setup_ring(struct submitter *s) |
697 | { | |
e31b8288 JA |
698 | struct io_sq_ring *sring = &s->sq_ring; |
699 | struct io_cq_ring *cring = &s->cq_ring; | |
700 | struct io_uring_params p; | |
2ea53ca3 | 701 | int ret, fd; |
c3e2fc25 | 702 | void *ptr; |
c3e2fc25 JA |
703 | |
704 | memset(&p, 0, sizeof(p)); | |
705 | ||
7d1435e6 | 706 | if (polled && !do_nop) |
0e47f11b | 707 | p.flags |= IORING_SETUP_IOPOLL; |
3d7d00a3 | 708 | if (sq_thread_poll) { |
2ea53ca3 | 709 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 710 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 711 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
712 | p.sq_thread_cpu = sq_thread_cpu; |
713 | } | |
c3e2fc25 JA |
714 | } |
715 | ||
e39863e3 | 716 | fd = io_uring_setup(depth, &p); |
c3e2fc25 JA |
717 | if (fd < 0) { |
718 | perror("io_uring_setup"); | |
719 | return 1; | |
720 | } | |
f310970e | 721 | s->ring_fd = fd; |
2ea53ca3 | 722 | |
b3915995 JA |
723 | io_uring_probe(fd); |
724 | ||
2ea53ca3 | 725 | if (fixedbufs) { |
15130e3f JA |
726 | struct rlimit rlim; |
727 | ||
728 | rlim.rlim_cur = RLIM_INFINITY; | |
729 | rlim.rlim_max = RLIM_INFINITY; | |
730 | /* ignore potential error, not needed on newer kernels */ | |
731 | setrlimit(RLIMIT_MEMLOCK, &rlim); | |
732 | ||
2ea53ca3 JA |
733 | ret = io_uring_register_buffers(s); |
734 | if (ret < 0) { | |
a7abc9fb | 735 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
736 | return 1; |
737 | } | |
738 | } | |
739 | ||
8c5fa755 JA |
740 | if (register_files) { |
741 | ret = io_uring_register_files(s); | |
742 | if (ret < 0) { | |
743 | perror("io_uring_register_files"); | |
744 | return 1; | |
745 | } | |
a7abc9fb JA |
746 | } |
747 | ||
e2239016 | 748 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
749 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
750 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
751 | printf("sq_ring ptr = 0x%p\n", ptr); |
752 | sring->head = ptr + p.sq_off.head; | |
753 | sring->tail = ptr + p.sq_off.tail; | |
754 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
755 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 756 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 757 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
758 | sq_ring_mask = *sring->ring_mask; |
759 | ||
f0403f94 | 760 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 761 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 JA |
762 | IORING_OFF_SQES); |
763 | printf("sqes ptr = 0x%p\n", s->sqes); | |
c3e2fc25 | 764 | |
f0403f94 | 765 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
766 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
767 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
768 | printf("cq_ring ptr = 0x%p\n", ptr); |
769 | cring->head = ptr + p.cq_off.head; | |
770 | cring->tail = ptr + p.cq_off.tail; | |
771 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
772 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 773 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
774 | cq_ring_mask = *cring->ring_mask; |
775 | return 0; | |
776 | } | |
777 | ||
2e7888ef JA |
778 | static void file_depths(char *buf) |
779 | { | |
26976a13 | 780 | bool prev = false; |
2e7888ef | 781 | char *p; |
54319661 | 782 | int i, j; |
2e7888ef | 783 | |
ac21bfab | 784 | buf[0] = '\0'; |
2e7888ef | 785 | p = buf; |
54319661 JA |
786 | for (j = 0; j < nthreads; j++) { |
787 | struct submitter *s = get_submitter(j); | |
2e7888ef | 788 | |
54319661 JA |
789 | for (i = 0; i < s->nr_files; i++) { |
790 | struct file *f = &s->files[i]; | |
791 | ||
26976a13 JA |
792 | if (prev) |
793 | p += sprintf(p, " %d", f->pending_ios); | |
54319661 | 794 | else |
4f215227 | 795 | p += sprintf(p, "%d", f->pending_ios); |
26976a13 | 796 | prev = true; |
54319661 | 797 | } |
2e7888ef JA |
798 | } |
799 | } | |
800 | ||
d79ff8c9 | 801 | static void usage(char *argv, int status) |
e39863e3 KB |
802 | { |
803 | printf("%s [options] -- [filenames]\n" | |
35268e11 AJ |
804 | " -d <int> : IO Depth, default %d\n" |
805 | " -s <int> : Batch submit, default %d\n" | |
806 | " -c <int> : Batch complete, default %d\n" | |
807 | " -b <int> : Block size, default %d\n" | |
808 | " -p <bool> : Polled IO, default %d\n" | |
809 | " -B <bool> : Fixed buffers, default %d\n" | |
810 | " -F <bool> : Register files, default %d\n" | |
0862f718 | 811 | " -n <int> : Number of threads, default %d\n" |
2686fc22 | 812 | " -O <bool> : Use O_DIRECT, default %d\n" |
4a39c524 EV |
813 | " -N <bool> : Perform just no-op requests, default %d\n" |
814 | " -t <bool> : Track IO latencies, default %d\n" | |
932131c9 | 815 | " -T <int> : TSC rate in HZ\n", |
35268e11 | 816 | argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE, BS, polled, |
932131c9 | 817 | fixedbufs, register_files, nthreads, !buffered, do_nop, stats); |
d79ff8c9 | 818 | exit(status); |
e39863e3 KB |
819 | } |
820 | ||
203e4c26 JA |
821 | static void read_tsc_rate(void) |
822 | { | |
823 | char buffer[32]; | |
824 | int fd, ret; | |
825 | ||
826 | if (tsc_rate) | |
827 | return; | |
828 | ||
829 | fd = open(TSC_RATE_FILE, O_RDONLY); | |
830 | if (fd < 0) | |
831 | return; | |
832 | ||
833 | ret = read(fd, buffer, sizeof(buffer)); | |
834 | if (ret < 0) { | |
835 | close(fd); | |
836 | return; | |
837 | } | |
838 | ||
839 | tsc_rate = strtoul(buffer, NULL, 10); | |
840 | printf("Using TSC rate %luHz\n", tsc_rate); | |
841 | close(fd); | |
842 | } | |
843 | ||
844 | static void write_tsc_rate(void) | |
845 | { | |
846 | char buffer[32]; | |
847 | struct stat sb; | |
848 | int fd, ret; | |
849 | ||
850 | if (!stat(TSC_RATE_FILE, &sb)) | |
851 | return; | |
852 | ||
853 | fd = open(TSC_RATE_FILE, O_WRONLY | O_CREAT, 0644); | |
854 | if (fd < 0) | |
855 | return; | |
856 | ||
857 | memset(buffer, 0, sizeof(buffer)); | |
858 | sprintf(buffer, "%lu", tsc_rate); | |
859 | ret = write(fd, buffer, strlen(buffer)); | |
860 | if (ret < 0) | |
861 | perror("write"); | |
862 | close(fd); | |
863 | } | |
864 | ||
c9fb4c5b JA |
865 | int main(int argc, char *argv[]) |
866 | { | |
e39863e3 | 867 | struct submitter *s; |
05138221 | 868 | unsigned long done, calls, reap; |
d79ff8c9 AJ |
869 | int err, i, j, flags, fd, opt, threads_per_f, threads_rem = 0, nfiles; |
870 | struct file f; | |
2e7888ef | 871 | char *fdepths; |
c3e2fc25 | 872 | void *ret; |
c9fb4c5b | 873 | |
0862f718 JA |
874 | if (!do_nop && argc < 2) |
875 | usage(argv[0], 1); | |
c9fb4c5b | 876 | |
932131c9 | 877 | while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:N:O:t:T:h?")) != -1) { |
e39863e3 KB |
878 | switch (opt) { |
879 | case 'd': | |
880 | depth = atoi(optarg); | |
881 | break; | |
882 | case 's': | |
883 | batch_submit = atoi(optarg); | |
932131c9 JA |
884 | if (!batch_submit) |
885 | batch_submit = 1; | |
e39863e3 KB |
886 | break; |
887 | case 'c': | |
888 | batch_complete = atoi(optarg); | |
932131c9 JA |
889 | if (!batch_complete) |
890 | batch_complete = 1; | |
e39863e3 | 891 | break; |
5bd526f2 JA |
892 | case 'b': |
893 | bs = atoi(optarg); | |
894 | break; | |
895 | case 'p': | |
896 | polled = !!atoi(optarg); | |
897 | break; | |
6a87c3b0 JA |
898 | case 'B': |
899 | fixedbufs = !!atoi(optarg); | |
900 | break; | |
901 | case 'F': | |
902 | register_files = !!atoi(optarg); | |
903 | break; | |
54319661 JA |
904 | case 'n': |
905 | nthreads = atoi(optarg); | |
caf2b9ac JA |
906 | if (!nthreads) { |
907 | printf("Threads must be non-zero\n"); | |
908 | usage(argv[0], 1); | |
909 | } | |
54319661 | 910 | break; |
0862f718 JA |
911 | case 'N': |
912 | do_nop = !!atoi(optarg); | |
913 | break; | |
2686fc22 JA |
914 | case 'O': |
915 | buffered = !atoi(optarg); | |
916 | break; | |
932131c9 JA |
917 | case 't': |
918 | #ifndef ARCH_HAVE_CPU_CLOCK | |
919 | fprintf(stderr, "Stats not supported on this CPU\n"); | |
920 | return 1; | |
921 | #endif | |
922 | stats = !!atoi(optarg); | |
923 | break; | |
924 | case 'T': | |
925 | #ifndef ARCH_HAVE_CPU_CLOCK | |
926 | fprintf(stderr, "Stats not supported on this CPU\n"); | |
927 | return 1; | |
928 | #endif | |
929 | tsc_rate = strtoul(optarg, NULL, 10); | |
203e4c26 | 930 | write_tsc_rate(); |
932131c9 | 931 | break; |
e39863e3 KB |
932 | case 'h': |
933 | case '?': | |
934 | default: | |
d79ff8c9 | 935 | usage(argv[0], 0); |
e39863e3 KB |
936 | break; |
937 | } | |
938 | } | |
939 | ||
203e4c26 JA |
940 | if (stats) |
941 | read_tsc_rate(); | |
942 | ||
c5347611 JA |
943 | if (batch_complete > depth) |
944 | batch_complete = depth; | |
945 | if (batch_submit > depth) | |
946 | batch_submit = depth; | |
947 | ||
54319661 JA |
948 | submitter = calloc(nthreads, sizeof(*submitter) + |
949 | depth * sizeof(struct iovec)); | |
950 | for (j = 0; j < nthreads; j++) { | |
951 | s = get_submitter(j); | |
952 | s->index = j; | |
953 | s->done = s->calls = s->reaps = 0; | |
954 | } | |
e39863e3 | 955 | |
701d1277 | 956 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
957 | if (!buffered) |
958 | flags |= O_DIRECT; | |
959 | ||
54319661 | 960 | j = 0; |
e39863e3 | 961 | i = optind; |
d79ff8c9 | 962 | nfiles = argc - i; |
2ac00585 JA |
963 | if (!do_nop) { |
964 | if (!nfiles) { | |
965 | printf("No files specified\n"); | |
966 | usage(argv[0], 1); | |
967 | } | |
968 | threads_per_f = nthreads / nfiles; | |
969 | /* make sure each thread gets assigned files */ | |
970 | if (threads_per_f == 0) { | |
971 | threads_per_f = 1; | |
972 | } else { | |
973 | threads_rem = nthreads - threads_per_f * nfiles; | |
974 | } | |
d79ff8c9 | 975 | } |
8025517d | 976 | while (!do_nop && i < argc) { |
d79ff8c9 AJ |
977 | int k, limit; |
978 | ||
979 | memset(&f, 0, sizeof(f)); | |
a7086591 JA |
980 | |
981 | fd = open(argv[i], flags); | |
982 | if (fd < 0) { | |
983 | perror("open"); | |
984 | return 1; | |
985 | } | |
d79ff8c9 AJ |
986 | f.real_fd = fd; |
987 | if (get_file_size(&f)) { | |
a7086591 JA |
988 | printf("failed getting size of device/file\n"); |
989 | return 1; | |
990 | } | |
d79ff8c9 | 991 | if (f.max_blocks <= 1) { |
a7086591 JA |
992 | printf("Zero file/device size?\n"); |
993 | return 1; | |
994 | } | |
d79ff8c9 AJ |
995 | f.max_blocks--; |
996 | ||
997 | limit = threads_per_f; | |
998 | limit += threads_rem > 0 ? 1 : 0; | |
999 | for (k = 0; k < limit; k++) { | |
1000 | s = get_submitter((j + k) % nthreads); | |
a7086591 | 1001 | |
d79ff8c9 AJ |
1002 | if (s->nr_files == MAX_FDS) { |
1003 | printf("Max number of files (%d) reached\n", MAX_FDS); | |
1004 | break; | |
1005 | } | |
1006 | ||
1007 | memcpy(&s->files[s->nr_files], &f, sizeof(f)); | |
1008 | ||
1009 | printf("Added file %s (submitter %d)\n", argv[i], s->index); | |
1010 | s->nr_files++; | |
1011 | } | |
1012 | threads_rem--; | |
a7086591 | 1013 | i++; |
d79ff8c9 | 1014 | j += limit; |
a7086591 JA |
1015 | } |
1016 | ||
c9fb4c5b JA |
1017 | arm_sig_int(); |
1018 | ||
54319661 JA |
1019 | for (j = 0; j < nthreads; j++) { |
1020 | s = get_submitter(j); | |
1021 | for (i = 0; i < depth; i++) { | |
1022 | void *buf; | |
c9fb4c5b | 1023 | |
54319661 JA |
1024 | if (posix_memalign(&buf, bs, bs)) { |
1025 | printf("failed alloc\n"); | |
1026 | return 1; | |
1027 | } | |
1028 | s->iovecs[i].iov_base = buf; | |
1029 | s->iovecs[i].iov_len = bs; | |
c9fb4c5b | 1030 | } |
c9fb4c5b JA |
1031 | } |
1032 | ||
54319661 JA |
1033 | for (j = 0; j < nthreads; j++) { |
1034 | s = get_submitter(j); | |
1035 | ||
1036 | err = setup_ring(s); | |
1037 | if (err) { | |
1038 | printf("ring setup failed: %s, %d\n", strerror(errno), err); | |
1039 | return 1; | |
1040 | } | |
c9fb4c5b | 1041 | } |
54319661 | 1042 | s = get_submitter(0); |
6a87c3b0 | 1043 | printf("polled=%d, fixedbufs=%d, register_files=%d, buffered=%d", polled, fixedbufs, register_files, buffered); |
e39863e3 | 1044 | printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", depth, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); |
c9fb4c5b | 1045 | |
54319661 JA |
1046 | for (j = 0; j < nthreads; j++) { |
1047 | s = get_submitter(j); | |
1048 | pthread_create(&s->thread, NULL, submitter_fn, s); | |
1049 | } | |
c9fb4c5b | 1050 | |
54319661 | 1051 | fdepths = malloc(8 * s->nr_files * nthreads); |
05138221 | 1052 | reap = calls = done = 0; |
c9fb4c5b JA |
1053 | do { |
1054 | unsigned long this_done = 0; | |
1055 | unsigned long this_reap = 0; | |
1056 | unsigned long this_call = 0; | |
1057 | unsigned long rpc = 0, ipc = 0; | |
f3057d26 | 1058 | unsigned long iops, bw; |
c9fb4c5b JA |
1059 | |
1060 | sleep(1); | |
54319661 JA |
1061 | for (j = 0; j < nthreads; j++) { |
1062 | this_done += s->done; | |
1063 | this_call += s->calls; | |
1064 | this_reap += s->reaps; | |
1065 | } | |
c9fb4c5b JA |
1066 | if (this_call - calls) { |
1067 | rpc = (this_done - done) / (this_call - calls); | |
1068 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
1069 | } else |
1070 | rpc = ipc = -1; | |
2e7888ef | 1071 | file_depths(fdepths); |
22fd3501 | 1072 | iops = this_done - done; |
f3057d26 JA |
1073 | if (bs > 1048576) |
1074 | bw = iops * (bs / 1048576); | |
1075 | else | |
1076 | bw = iops / (1048576 / bs); | |
6c5d3a1c JA |
1077 | printf("IOPS=%lu, ", iops); |
1078 | if (!do_nop) | |
1079 | printf("BW=%luMiB/s, ", bw); | |
1080 | printf("IOS/call=%ld/%ld, inflight=(%s)\n", rpc, ipc, fdepths); | |
c9fb4c5b JA |
1081 | done = this_done; |
1082 | calls = this_call; | |
1083 | reap = this_reap; | |
1084 | } while (!finish); | |
1085 | ||
54319661 JA |
1086 | for (j = 0; j < nthreads; j++) { |
1087 | s = get_submitter(j); | |
1088 | pthread_join(s->thread, &ret); | |
1089 | close(s->ring_fd); | |
932131c9 JA |
1090 | |
1091 | if (stats) { | |
1092 | unsigned long nr; | |
1093 | ||
1094 | printf("%d: Latency percentiles:\n", s->tid); | |
1095 | for (i = 0, nr = 0; i < PLAT_NR; i++) | |
1096 | nr += s->plat[i]; | |
1097 | show_clat_percentiles(s->plat, nr, 4); | |
1098 | free(s->clock_batch); | |
1099 | free(s->plat); | |
1100 | } | |
54319661 | 1101 | } |
932131c9 | 1102 | |
2e7888ef | 1103 | free(fdepths); |
54319661 | 1104 | free(submitter); |
c9fb4c5b JA |
1105 | return 0; |
1106 | } |