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 | 9 | |
256714ea JA |
10 | #ifdef CONFIG_LIBAIO |
11 | #include <libaio.h> | |
12 | #endif | |
13 | ||
c9fb4c5b JA |
14 | #include <sys/types.h> |
15 | #include <sys/stat.h> | |
16 | #include <sys/ioctl.h> | |
17 | #include <sys/syscall.h> | |
18 | #include <sys/resource.h> | |
c3e2fc25 | 19 | #include <sys/mman.h> |
e31b8288 | 20 | #include <sys/uio.h> |
c9fb4c5b JA |
21 | #include <linux/fs.h> |
22 | #include <fcntl.h> | |
23 | #include <unistd.h> | |
c9fb4c5b JA |
24 | #include <string.h> |
25 | #include <pthread.h> | |
26 | #include <sched.h> | |
27 | ||
74efb029 | 28 | #include "../arch/arch.h" |
57fa61f0 | 29 | #include "../lib/types.h" |
932131c9 | 30 | #include "../lib/roundup.h" |
9eff5320 | 31 | #include "../lib/rand.h" |
932131c9 | 32 | #include "../minmax.h" |
f3e769a4 | 33 | #include "../os/linux/io_uring.h" |
ac122fea | 34 | |
e31b8288 | 35 | struct io_sq_ring { |
e2239016 JA |
36 | unsigned *head; |
37 | unsigned *tail; | |
38 | unsigned *ring_mask; | |
39 | unsigned *ring_entries; | |
ce1705de | 40 | unsigned *flags; |
e2239016 | 41 | unsigned *array; |
c9fb4c5b JA |
42 | }; |
43 | ||
e31b8288 | 44 | struct io_cq_ring { |
e2239016 JA |
45 | unsigned *head; |
46 | unsigned *tail; | |
47 | unsigned *ring_mask; | |
48 | unsigned *ring_entries; | |
f0403f94 | 49 | struct io_uring_cqe *cqes; |
c9fb4c5b JA |
50 | }; |
51 | ||
701d1277 | 52 | #define DEPTH 128 |
2e7888ef JA |
53 | #define BATCH_SUBMIT 32 |
54 | #define BATCH_COMPLETE 32 | |
c9fb4c5b JA |
55 | #define BS 4096 |
56 | ||
a7086591 JA |
57 | #define MAX_FDS 16 |
58 | ||
c3e2fc25 | 59 | static unsigned sq_ring_mask, cq_ring_mask; |
e39c34dc | 60 | |
a7086591 JA |
61 | struct file { |
62 | unsigned long max_blocks; | |
701d1277 | 63 | unsigned pending_ios; |
48e698fa JA |
64 | int real_fd; |
65 | int fixed_fd; | |
932131c9 | 66 | int fileno; |
a7086591 JA |
67 | }; |
68 | ||
932131c9 JA |
69 | #define PLAT_BITS 6 |
70 | #define PLAT_VAL (1 << PLAT_BITS) | |
71 | #define PLAT_GROUP_NR 29 | |
72 | #define PLAT_NR (PLAT_GROUP_NR * PLAT_VAL) | |
73 | ||
c9fb4c5b JA |
74 | struct submitter { |
75 | pthread_t thread; | |
f310970e | 76 | int ring_fd; |
54319661 | 77 | int index; |
e31b8288 | 78 | struct io_sq_ring sq_ring; |
f0403f94 | 79 | struct io_uring_sqe *sqes; |
e31b8288 | 80 | struct io_cq_ring cq_ring; |
c9fb4c5b | 81 | int inflight; |
932131c9 | 82 | int tid; |
c9fb4c5b JA |
83 | unsigned long reaps; |
84 | unsigned long done; | |
85 | unsigned long calls; | |
86 | volatile int finish; | |
701d1277 | 87 | |
48e698fa JA |
88 | __s32 *fds; |
89 | ||
9eff5320 JA |
90 | struct taus258_state rand_state; |
91 | ||
932131c9 JA |
92 | unsigned long *clock_batch; |
93 | int clock_index; | |
94 | unsigned long *plat; | |
95 | ||
256714ea JA |
96 | #ifdef CONFIG_LIBAIO |
97 | io_context_t aio_ctx; | |
98 | #endif | |
99 | ||
a7086591 JA |
100 | struct file files[MAX_FDS]; |
101 | unsigned nr_files; | |
102 | unsigned cur_file; | |
e39863e3 | 103 | struct iovec iovecs[]; |
c9fb4c5b JA |
104 | }; |
105 | ||
e39863e3 | 106 | static struct submitter *submitter; |
c9fb4c5b | 107 | static volatile int finish; |
52479d8b | 108 | static int stats_running; |
16d25711 | 109 | static unsigned long max_iops; |
c9fb4c5b | 110 | |
e39863e3 KB |
111 | static int depth = DEPTH; |
112 | static int batch_submit = BATCH_SUBMIT; | |
113 | static int batch_complete = BATCH_COMPLETE; | |
5bd526f2 | 114 | static int bs = BS; |
f0403f94 | 115 | static int polled = 1; /* use IO polling */ |
701d1277 | 116 | static int fixedbufs = 1; /* use fixed user buffers */ |
a71ad043 | 117 | static int dma_map; /* pre-map DMA buffers */ |
8c5fa755 | 118 | static int register_files = 1; /* use fixed files */ |
f0403f94 | 119 | static int buffered = 0; /* use buffered IO, not O_DIRECT */ |
3d7d00a3 JA |
120 | static int sq_thread_poll = 0; /* use kernel submission/poller thread */ |
121 | static int sq_thread_cpu = -1; /* pin above thread to this CPU */ | |
8025517d | 122 | static int do_nop = 0; /* no-op SQ ring commands */ |
54319661 | 123 | static int nthreads = 1; |
932131c9 | 124 | static int stats = 0; /* generate IO stats */ |
256714ea | 125 | static int aio = 0; /* use libaio */ |
65e1a5e8 | 126 | static int runtime = 0; /* runtime */ |
256714ea | 127 | |
932131c9 | 128 | static unsigned long tsc_rate; |
c9fb4c5b | 129 | |
203e4c26 JA |
130 | #define TSC_RATE_FILE "tsc-rate" |
131 | ||
84106576 | 132 | static int vectored = 1; |
b3915995 | 133 | |
932131c9 | 134 | static float plist[] = { 1.0, 5.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, |
ad45a465 | 135 | 80.0, 90.0, 95.0, 99.0, 99.5, 99.9, 99.95, 99.99 }; |
932131c9 JA |
136 | static int plist_len = 17; |
137 | ||
a71ad043 JA |
138 | #ifndef IORING_REGISTER_MAP_BUFFERS |
139 | #define IORING_REGISTER_MAP_BUFFERS 20 | |
140 | struct io_uring_map_buffers { | |
141 | __s32 fd; | |
142 | __u32 buf_start; | |
143 | __u32 buf_end; | |
702b0be2 JA |
144 | __u32 flags; |
145 | __u64 rsvd[2]; | |
a71ad043 JA |
146 | }; |
147 | #endif | |
148 | ||
932131c9 JA |
149 | static unsigned long cycles_to_nsec(unsigned long cycles) |
150 | { | |
151 | uint64_t val; | |
152 | ||
153 | if (!tsc_rate) | |
154 | return cycles; | |
155 | ||
156 | val = cycles * 1000000000ULL; | |
157 | return val / tsc_rate; | |
158 | } | |
159 | ||
160 | static unsigned long plat_idx_to_val(unsigned int idx) | |
161 | { | |
162 | unsigned int error_bits; | |
163 | unsigned long k, base; | |
164 | ||
165 | assert(idx < PLAT_NR); | |
166 | ||
167 | /* MSB <= (PLAT_BITS-1), cannot be rounded off. Use | |
168 | * all bits of the sample as index */ | |
169 | if (idx < (PLAT_VAL << 1)) | |
170 | return cycles_to_nsec(idx); | |
171 | ||
172 | /* Find the group and compute the minimum value of that group */ | |
173 | error_bits = (idx >> PLAT_BITS) - 1; | |
174 | base = ((unsigned long) 1) << (error_bits + PLAT_BITS); | |
175 | ||
176 | /* Find its bucket number of the group */ | |
177 | k = idx % PLAT_VAL; | |
178 | ||
179 | /* Return the mean of the range of the bucket */ | |
180 | return cycles_to_nsec(base + ((k + 0.5) * (1 << error_bits))); | |
181 | } | |
182 | ||
183 | unsigned int calc_clat_percentiles(unsigned long *io_u_plat, unsigned long nr, | |
184 | unsigned long **output, | |
185 | unsigned long *maxv, unsigned long *minv) | |
186 | { | |
187 | unsigned long sum = 0; | |
188 | unsigned int len = plist_len, i, j = 0; | |
189 | unsigned long *ovals = NULL; | |
190 | bool is_last; | |
191 | ||
192 | *minv = -1ULL; | |
193 | *maxv = 0; | |
194 | ||
195 | ovals = malloc(len * sizeof(*ovals)); | |
196 | if (!ovals) | |
197 | return 0; | |
198 | ||
199 | /* | |
200 | * Calculate bucket values, note down max and min values | |
201 | */ | |
202 | is_last = false; | |
203 | for (i = 0; i < PLAT_NR && !is_last; i++) { | |
204 | sum += io_u_plat[i]; | |
205 | while (sum >= ((long double) plist[j] / 100.0 * nr)) { | |
206 | assert(plist[j] <= 100.0); | |
207 | ||
208 | ovals[j] = plat_idx_to_val(i); | |
209 | if (ovals[j] < *minv) | |
210 | *minv = ovals[j]; | |
211 | if (ovals[j] > *maxv) | |
212 | *maxv = ovals[j]; | |
213 | ||
214 | is_last = (j == len - 1) != 0; | |
215 | if (is_last) | |
216 | break; | |
217 | ||
218 | j++; | |
219 | } | |
220 | } | |
221 | ||
222 | if (!is_last) | |
223 | fprintf(stderr, "error calculating latency percentiles\n"); | |
224 | ||
225 | *output = ovals; | |
226 | return len; | |
227 | } | |
228 | ||
229 | static void show_clat_percentiles(unsigned long *io_u_plat, unsigned long nr, | |
230 | unsigned int precision) | |
231 | { | |
232 | unsigned int divisor, len, i, j = 0; | |
233 | unsigned long minv, maxv; | |
234 | unsigned long *ovals; | |
235 | int per_line, scale_down, time_width; | |
236 | bool is_last; | |
237 | char fmt[32]; | |
238 | ||
239 | len = calc_clat_percentiles(io_u_plat, nr, &ovals, &maxv, &minv); | |
240 | if (!len || !ovals) | |
241 | goto out; | |
242 | ||
243 | if (!tsc_rate) { | |
244 | scale_down = 0; | |
245 | divisor = 1; | |
246 | printf(" percentiles (tsc ticks):\n |"); | |
247 | } else if (minv > 2000 && maxv > 99999) { | |
248 | scale_down = 1; | |
249 | divisor = 1000; | |
250 | printf(" percentiles (usec):\n |"); | |
251 | } else { | |
252 | scale_down = 0; | |
253 | divisor = 1; | |
254 | printf(" percentiles (nsec):\n |"); | |
255 | } | |
256 | ||
257 | time_width = max(5, (int) (log10(maxv / divisor) + 1)); | |
258 | snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3, | |
259 | precision, time_width); | |
260 | /* fmt will be something like " %5.2fth=[%4llu]%c" */ | |
261 | per_line = (80 - 7) / (precision + 10 + time_width); | |
262 | ||
263 | for (j = 0; j < len; j++) { | |
264 | /* for formatting */ | |
265 | if (j != 0 && (j % per_line) == 0) | |
266 | printf(" |"); | |
267 | ||
268 | /* end of the list */ | |
269 | is_last = (j == len - 1) != 0; | |
270 | ||
271 | for (i = 0; i < scale_down; i++) | |
272 | ovals[j] = (ovals[j] + 999) / 1000; | |
273 | ||
274 | printf(fmt, plist[j], ovals[j], is_last ? '\n' : ','); | |
275 | ||
276 | if (is_last) | |
277 | break; | |
278 | ||
279 | if ((j % per_line) == per_line - 1) /* for formatting */ | |
280 | printf("\n"); | |
281 | } | |
282 | ||
283 | out: | |
284 | free(ovals); | |
285 | } | |
286 | ||
287 | static unsigned int plat_val_to_idx(unsigned long val) | |
288 | { | |
289 | unsigned int msb, error_bits, base, offset, idx; | |
290 | ||
291 | /* Find MSB starting from bit 0 */ | |
292 | if (val == 0) | |
293 | msb = 0; | |
294 | else | |
295 | msb = (sizeof(val)*8) - __builtin_clzll(val) - 1; | |
296 | ||
297 | /* | |
298 | * MSB <= (PLAT_BITS-1), cannot be rounded off. Use | |
299 | * all bits of the sample as index | |
300 | */ | |
301 | if (msb <= PLAT_BITS) | |
302 | return val; | |
303 | ||
304 | /* Compute the number of error bits to discard*/ | |
305 | error_bits = msb - PLAT_BITS; | |
306 | ||
307 | /* Compute the number of buckets before the group */ | |
308 | base = (error_bits + 1) << PLAT_BITS; | |
309 | ||
310 | /* | |
311 | * Discard the error bits and apply the mask to find the | |
312 | * index for the buckets in the group | |
313 | */ | |
314 | offset = (PLAT_VAL - 1) & (val >> error_bits); | |
315 | ||
316 | /* Make sure the index does not exceed (array size - 1) */ | |
317 | idx = (base + offset) < (PLAT_NR - 1) ? | |
318 | (base + offset) : (PLAT_NR - 1); | |
319 | ||
320 | return idx; | |
321 | } | |
322 | ||
323 | static void add_stat(struct submitter *s, int clock_index, int nr) | |
324 | { | |
325 | #ifdef ARCH_HAVE_CPU_CLOCK | |
326 | unsigned long cycles; | |
327 | unsigned int pidx; | |
328 | ||
265697fc JA |
329 | if (!s->finish && clock_index) { |
330 | cycles = get_cpu_clock(); | |
331 | cycles -= s->clock_batch[clock_index]; | |
332 | pidx = plat_val_to_idx(cycles); | |
333 | s->plat[pidx] += nr; | |
334 | } | |
932131c9 JA |
335 | #endif |
336 | } | |
337 | ||
a71ad043 JA |
338 | static int io_uring_map_buffers(struct submitter *s) |
339 | { | |
340 | struct io_uring_map_buffers map = { | |
341 | .fd = s->files[0].real_fd, | |
a71ad043 | 342 | .buf_end = depth, |
a71ad043 JA |
343 | }; |
344 | ||
345 | if (do_nop) | |
346 | return 0; | |
347 | if (s->nr_files > 1) { | |
348 | fprintf(stderr, "Can't map buffers with multiple files\n"); | |
349 | return -1; | |
350 | } | |
351 | ||
352 | return syscall(__NR_io_uring_register, s->ring_fd, | |
353 | IORING_REGISTER_MAP_BUFFERS, &map, 1); | |
354 | } | |
355 | ||
2ea53ca3 | 356 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 357 | { |
8025517d JA |
358 | if (do_nop) |
359 | return 0; | |
360 | ||
bfed648c | 361 | return syscall(__NR_io_uring_register, s->ring_fd, |
e39863e3 | 362 | IORING_REGISTER_BUFFERS, s->iovecs, depth); |
2ea53ca3 JA |
363 | } |
364 | ||
a7abc9fb JA |
365 | static int io_uring_register_files(struct submitter *s) |
366 | { | |
48e698fa | 367 | int i; |
a7abc9fb | 368 | |
8025517d JA |
369 | if (do_nop) |
370 | return 0; | |
371 | ||
48e698fa JA |
372 | s->fds = calloc(s->nr_files, sizeof(__s32)); |
373 | for (i = 0; i < s->nr_files; i++) { | |
374 | s->fds[i] = s->files[i].real_fd; | |
375 | s->files[i].fixed_fd = i; | |
376 | } | |
a7abc9fb | 377 | |
bfed648c | 378 | return syscall(__NR_io_uring_register, s->ring_fd, |
919850d2 | 379 | IORING_REGISTER_FILES, s->fds, s->nr_files); |
a7abc9fb JA |
380 | } |
381 | ||
2ea53ca3 JA |
382 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) |
383 | { | |
bfed648c | 384 | return syscall(__NR_io_uring_setup, entries, p); |
c9fb4c5b JA |
385 | } |
386 | ||
b3915995 JA |
387 | static void io_uring_probe(int fd) |
388 | { | |
389 | struct io_uring_probe *p; | |
390 | int ret; | |
391 | ||
392 | p = malloc(sizeof(*p) + 256 * sizeof(struct io_uring_probe_op)); | |
393 | if (!p) | |
394 | return; | |
395 | ||
396 | memset(p, 0, sizeof(*p) + 256 * sizeof(struct io_uring_probe_op)); | |
397 | ret = syscall(__NR_io_uring_register, fd, IORING_REGISTER_PROBE, p, 256); | |
398 | if (ret < 0) | |
399 | goto out; | |
400 | ||
401 | if (IORING_OP_READ > p->ops_len) | |
402 | goto out; | |
403 | ||
404 | if ((p->ops[IORING_OP_READ].flags & IO_URING_OP_SUPPORTED)) | |
84106576 | 405 | vectored = 0; |
b3915995 JA |
406 | out: |
407 | free(p); | |
408 | } | |
409 | ||
c3e2fc25 JA |
410 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
411 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 412 | { |
bfed648c JA |
413 | return syscall(__NR_io_uring_enter, s->ring_fd, to_submit, min_complete, |
414 | flags, NULL, 0); | |
c9fb4c5b JA |
415 | } |
416 | ||
77d814a1 | 417 | #ifndef CONFIG_HAVE_GETTID |
c9fb4c5b JA |
418 | static int gettid(void) |
419 | { | |
420 | return syscall(__NR_gettid); | |
421 | } | |
77d814a1 | 422 | #endif |
c9fb4c5b | 423 | |
701d1277 JA |
424 | static unsigned file_depth(struct submitter *s) |
425 | { | |
e39863e3 | 426 | return (depth + s->nr_files - 1) / s->nr_files; |
701d1277 JA |
427 | } |
428 | ||
a7086591 | 429 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 430 | { |
f0403f94 | 431 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 432 | unsigned long offset; |
a7086591 | 433 | struct file *f; |
c9fb4c5b JA |
434 | long r; |
435 | ||
8025517d JA |
436 | if (do_nop) { |
437 | sqe->opcode = IORING_OP_NOP; | |
438 | return; | |
439 | } | |
440 | ||
701d1277 JA |
441 | if (s->nr_files == 1) { |
442 | f = &s->files[0]; | |
443 | } else { | |
444 | f = &s->files[s->cur_file]; | |
445 | if (f->pending_ios >= file_depth(s)) { | |
446 | s->cur_file++; | |
447 | if (s->cur_file == s->nr_files) | |
448 | s->cur_file = 0; | |
93d1811c | 449 | f = &s->files[s->cur_file]; |
701d1277 JA |
450 | } |
451 | } | |
452 | f->pending_ios++; | |
a7086591 | 453 | |
9eff5320 | 454 | r = __rand64(&s->rand_state); |
5bd526f2 | 455 | offset = (r % (f->max_blocks - 1)) * bs; |
c9fb4c5b | 456 | |
8c5fa755 JA |
457 | if (register_files) { |
458 | sqe->flags = IOSQE_FIXED_FILE; | |
459 | sqe->fd = f->fixed_fd; | |
460 | } else { | |
461 | sqe->flags = 0; | |
462 | sqe->fd = f->real_fd; | |
463 | } | |
f0403f94 | 464 | if (fixedbufs) { |
48e698fa | 465 | sqe->opcode = IORING_OP_READ_FIXED; |
919850d2 | 466 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; |
5bd526f2 | 467 | sqe->len = bs; |
2ea53ca3 | 468 | sqe->buf_index = index; |
84106576 | 469 | } else if (!vectored) { |
b3915995 JA |
470 | sqe->opcode = IORING_OP_READ; |
471 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; | |
472 | sqe->len = bs; | |
473 | sqe->buf_index = 0; | |
84106576 JA |
474 | } else { |
475 | sqe->opcode = IORING_OP_READV; | |
476 | sqe->addr = (unsigned long) &s->iovecs[index]; | |
477 | sqe->len = 1; | |
478 | sqe->buf_index = 0; | |
f0403f94 | 479 | } |
f0403f94 | 480 | sqe->ioprio = 0; |
f0403f94 | 481 | sqe->off = offset; |
932131c9 | 482 | sqe->user_data = (unsigned long) f->fileno; |
52479d8b | 483 | if (stats && stats_running) |
932131c9 | 484 | sqe->user_data |= ((unsigned long)s->clock_index << 32); |
c9fb4c5b JA |
485 | } |
486 | ||
256714ea | 487 | static int prep_more_ios_uring(struct submitter *s, int max_ios) |
c9fb4c5b | 488 | { |
e31b8288 | 489 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 490 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 491 | |
c3e2fc25 | 492 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
493 | do { |
494 | next_tail++; | |
fc2dc21b | 495 | if (next_tail == atomic_load_acquire(ring->head)) |
c9fb4c5b JA |
496 | break; |
497 | ||
e39c34dc | 498 | index = tail & sq_ring_mask; |
a7086591 | 499 | init_io(s, index); |
c3e2fc25 | 500 | ring->array[index] = index; |
c9fb4c5b JA |
501 | prepped++; |
502 | tail = next_tail; | |
503 | } while (prepped < max_ios); | |
504 | ||
fc2dc21b JA |
505 | if (prepped) |
506 | atomic_store_release(ring->tail, tail); | |
c9fb4c5b JA |
507 | return prepped; |
508 | } | |
509 | ||
a7086591 | 510 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
511 | { |
512 | struct stat st; | |
513 | ||
48e698fa | 514 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
515 | return -1; |
516 | if (S_ISBLK(st.st_mode)) { | |
517 | unsigned long long bytes; | |
518 | ||
48e698fa | 519 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
520 | return -1; |
521 | ||
5bd526f2 | 522 | f->max_blocks = bytes / bs; |
c9fb4c5b JA |
523 | return 0; |
524 | } else if (S_ISREG(st.st_mode)) { | |
5bd526f2 | 525 | f->max_blocks = st.st_size / bs; |
c9fb4c5b JA |
526 | return 0; |
527 | } | |
528 | ||
529 | return -1; | |
530 | } | |
531 | ||
256714ea | 532 | static int reap_events_uring(struct submitter *s) |
c9fb4c5b | 533 | { |
e31b8288 | 534 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 535 | struct io_uring_cqe *cqe; |
e2239016 | 536 | unsigned head, reaped = 0; |
ab85494f | 537 | int last_idx = -1, stat_nr = 0; |
c9fb4c5b | 538 | |
c3e2fc25 | 539 | head = *ring->head; |
c9fb4c5b | 540 | do { |
701d1277 JA |
541 | struct file *f; |
542 | ||
679d8352 | 543 | read_barrier(); |
fc2dc21b | 544 | if (head == atomic_load_acquire(ring->tail)) |
c9fb4c5b | 545 | break; |
f0403f94 | 546 | cqe = &ring->cqes[head & cq_ring_mask]; |
8025517d | 547 | if (!do_nop) { |
932131c9 JA |
548 | int fileno = cqe->user_data & 0xffffffff; |
549 | ||
550 | f = &s->files[fileno]; | |
8025517d | 551 | f->pending_ios--; |
5bd526f2 | 552 | if (cqe->res != bs) { |
8025517d | 553 | printf("io: unexpected ret=%d\n", cqe->res); |
154a9582 | 554 | if (polled && cqe->res == -EOPNOTSUPP) |
8066f6b6 | 555 | printf("Your filesystem/driver/kernel doesn't support polled IO\n"); |
8025517d JA |
556 | return -1; |
557 | } | |
c9fb4c5b | 558 | } |
932131c9 JA |
559 | if (stats) { |
560 | int clock_index = cqe->user_data >> 32; | |
561 | ||
ab85494f JA |
562 | if (last_idx != clock_index) { |
563 | if (last_idx != -1) { | |
564 | add_stat(s, last_idx, stat_nr); | |
565 | stat_nr = 0; | |
566 | } | |
567 | last_idx = clock_index; | |
d4af2ece JA |
568 | } |
569 | stat_nr++; | |
932131c9 | 570 | } |
c9fb4c5b JA |
571 | reaped++; |
572 | head++; | |
c9fb4c5b JA |
573 | } while (1); |
574 | ||
ab85494f JA |
575 | if (stat_nr) |
576 | add_stat(s, last_idx, stat_nr); | |
577 | ||
fc2dc21b JA |
578 | if (reaped) { |
579 | s->inflight -= reaped; | |
580 | atomic_store_release(ring->head, head); | |
581 | } | |
c9fb4c5b JA |
582 | return reaped; |
583 | } | |
584 | ||
256714ea | 585 | static int submitter_init(struct submitter *s) |
c9fb4c5b | 586 | { |
256714ea | 587 | int i, nr_batch; |
c9fb4c5b | 588 | |
932131c9 | 589 | s->tid = gettid(); |
7e847fd0 | 590 | printf("submitter=%d, tid=%d\n", s->index, s->tid); |
c9fb4c5b | 591 | |
9eff5320 | 592 | __init_rand64(&s->rand_state, pthread_self()); |
5e8865c0 | 593 | srand48(pthread_self()); |
c9fb4c5b | 594 | |
932131c9 JA |
595 | for (i = 0; i < MAX_FDS; i++) |
596 | s->files[i].fileno = i; | |
597 | ||
598 | if (stats) { | |
599 | nr_batch = roundup_pow2(depth / batch_submit); | |
d4af2ece JA |
600 | if (nr_batch < 2) |
601 | nr_batch = 2; | |
932131c9 | 602 | s->clock_batch = calloc(nr_batch, sizeof(unsigned long)); |
52479d8b | 603 | s->clock_index = 1; |
932131c9 JA |
604 | |
605 | s->plat = calloc(PLAT_NR, sizeof(unsigned long)); | |
606 | } else { | |
607 | s->clock_batch = NULL; | |
608 | s->plat = NULL; | |
609 | nr_batch = 0; | |
610 | } | |
611 | ||
256714ea JA |
612 | return nr_batch; |
613 | } | |
614 | ||
615 | #ifdef CONFIG_LIBAIO | |
616 | static int prep_more_ios_aio(struct submitter *s, int max_ios, struct iocb *iocbs) | |
617 | { | |
618 | unsigned long offset, data; | |
619 | struct file *f; | |
620 | unsigned index; | |
621 | long r; | |
622 | ||
623 | index = 0; | |
624 | while (index < max_ios) { | |
625 | struct iocb *iocb = &iocbs[index]; | |
626 | ||
627 | if (s->nr_files == 1) { | |
628 | f = &s->files[0]; | |
629 | } else { | |
630 | f = &s->files[s->cur_file]; | |
631 | if (f->pending_ios >= file_depth(s)) { | |
632 | s->cur_file++; | |
633 | if (s->cur_file == s->nr_files) | |
634 | s->cur_file = 0; | |
635 | f = &s->files[s->cur_file]; | |
636 | } | |
637 | } | |
638 | f->pending_ios++; | |
639 | ||
640 | r = lrand48(); | |
641 | offset = (r % (f->max_blocks - 1)) * bs; | |
642 | io_prep_pread(iocb, f->real_fd, s->iovecs[index].iov_base, | |
643 | s->iovecs[index].iov_len, offset); | |
644 | ||
645 | data = f->fileno; | |
52479d8b | 646 | if (stats && stats_running) |
256714ea JA |
647 | data |= ((unsigned long) s->clock_index << 32); |
648 | iocb->data = (void *) (uintptr_t) data; | |
649 | index++; | |
650 | } | |
651 | return index; | |
652 | } | |
653 | ||
654 | static int reap_events_aio(struct submitter *s, struct io_event *events, int evs) | |
655 | { | |
656 | int last_idx = -1, stat_nr = 0; | |
657 | int reaped = 0; | |
658 | ||
659 | while (evs) { | |
660 | unsigned long data = (uintptr_t) events[reaped].data; | |
661 | struct file *f = &s->files[data & 0xffffffff]; | |
662 | ||
663 | f->pending_ios--; | |
664 | if (events[reaped].res != bs) { | |
665 | printf("io: unexpected ret=%ld\n", events[reaped].res); | |
666 | return -1; | |
667 | } | |
668 | if (stats) { | |
669 | int clock_index = data >> 32; | |
670 | ||
671 | if (last_idx != clock_index) { | |
672 | if (last_idx != -1) { | |
673 | add_stat(s, last_idx, stat_nr); | |
674 | stat_nr = 0; | |
675 | } | |
676 | last_idx = clock_index; | |
d4af2ece JA |
677 | } |
678 | stat_nr++; | |
256714ea JA |
679 | } |
680 | reaped++; | |
681 | evs--; | |
682 | } | |
683 | ||
684 | if (stat_nr) | |
685 | add_stat(s, last_idx, stat_nr); | |
686 | ||
687 | s->inflight -= reaped; | |
688 | s->done += reaped; | |
689 | return reaped; | |
690 | } | |
691 | ||
692 | static void *submitter_aio_fn(void *data) | |
693 | { | |
694 | struct submitter *s = data; | |
695 | int i, ret, prepped, nr_batch; | |
696 | struct iocb **iocbsptr; | |
697 | struct iocb *iocbs; | |
698 | struct io_event *events; | |
699 | ||
700 | nr_batch = submitter_init(s); | |
701 | ||
702 | iocbsptr = calloc(depth, sizeof(struct iocb *)); | |
703 | iocbs = calloc(depth, sizeof(struct iocb)); | |
704 | events = calloc(depth, sizeof(struct io_event)); | |
705 | ||
706 | for (i = 0; i < depth; i++) | |
707 | iocbsptr[i] = &iocbs[i]; | |
708 | ||
709 | prepped = 0; | |
710 | do { | |
711 | int to_wait, to_submit, to_prep; | |
712 | ||
713 | if (!prepped && s->inflight < depth) { | |
714 | to_prep = min(depth - s->inflight, batch_submit); | |
715 | prepped = prep_more_ios_aio(s, to_prep, iocbs); | |
716 | #ifdef ARCH_HAVE_CPU_CLOCK | |
717 | if (prepped && stats) { | |
718 | s->clock_batch[s->clock_index] = get_cpu_clock(); | |
719 | s->clock_index = (s->clock_index + 1) & (nr_batch - 1); | |
720 | } | |
721 | #endif | |
722 | } | |
723 | s->inflight += prepped; | |
724 | to_submit = prepped; | |
725 | ||
726 | if (to_submit && (s->inflight + to_submit <= depth)) | |
727 | to_wait = 0; | |
728 | else | |
729 | to_wait = min(s->inflight + to_submit, batch_complete); | |
730 | ||
731 | ret = io_submit(s->aio_ctx, to_submit, iocbsptr); | |
732 | s->calls++; | |
733 | if (ret < 0) { | |
734 | perror("io_submit"); | |
735 | break; | |
736 | } else if (ret != to_submit) { | |
737 | printf("submitted %d, wanted %d\n", ret, to_submit); | |
738 | break; | |
739 | } | |
740 | prepped = 0; | |
741 | ||
24a24c12 | 742 | while (to_wait) { |
256714ea JA |
743 | int r; |
744 | ||
24a24c12 JA |
745 | s->calls++; |
746 | r = io_getevents(s->aio_ctx, to_wait, to_wait, events, NULL); | |
747 | if (r < 0) { | |
748 | perror("io_getevents"); | |
749 | break; | |
750 | } else if (r != to_wait) { | |
751 | printf("r=%d, wait=%d\n", r, to_wait); | |
752 | break; | |
753 | } | |
754 | r = reap_events_aio(s, events, r); | |
755 | s->reaps += r; | |
756 | to_wait -= r; | |
256714ea JA |
757 | } |
758 | } while (!s->finish); | |
759 | ||
760 | free(iocbsptr); | |
761 | free(iocbs); | |
762 | free(events); | |
763 | finish = 1; | |
764 | return NULL; | |
765 | } | |
766 | #endif | |
767 | ||
768 | static void *submitter_uring_fn(void *data) | |
769 | { | |
770 | struct submitter *s = data; | |
771 | struct io_sq_ring *ring = &s->sq_ring; | |
772 | int ret, prepped, nr_batch; | |
773 | ||
774 | nr_batch = submitter_init(s); | |
775 | ||
c9fb4c5b JA |
776 | prepped = 0; |
777 | do { | |
f310970e | 778 | int to_wait, to_submit, this_reap, to_prep; |
fc2dc21b | 779 | unsigned ring_flags = 0; |
c9fb4c5b | 780 | |
e39863e3 KB |
781 | if (!prepped && s->inflight < depth) { |
782 | to_prep = min(depth - s->inflight, batch_submit); | |
256714ea | 783 | prepped = prep_more_ios_uring(s, to_prep); |
932131c9 JA |
784 | #ifdef ARCH_HAVE_CPU_CLOCK |
785 | if (prepped && stats) { | |
786 | s->clock_batch[s->clock_index] = get_cpu_clock(); | |
787 | s->clock_index = (s->clock_index + 1) & (nr_batch - 1); | |
788 | } | |
789 | #endif | |
f310970e | 790 | } |
c9fb4c5b JA |
791 | s->inflight += prepped; |
792 | submit_more: | |
793 | to_submit = prepped; | |
794 | submit: | |
e39863e3 | 795 | if (to_submit && (s->inflight + to_submit <= depth)) |
c9fb4c5b JA |
796 | to_wait = 0; |
797 | else | |
e39863e3 | 798 | to_wait = min(s->inflight + to_submit, batch_complete); |
c9fb4c5b | 799 | |
ce1705de JA |
800 | /* |
801 | * Only need to call io_uring_enter if we're not using SQ thread | |
802 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
803 | */ | |
fc2dc21b JA |
804 | if (sq_thread_poll) |
805 | ring_flags = atomic_load_acquire(ring->flags); | |
806 | if (!sq_thread_poll || ring_flags & IORING_SQ_NEED_WAKEUP) { | |
e0abe388 JA |
807 | unsigned flags = 0; |
808 | ||
809 | if (to_wait) | |
810 | flags = IORING_ENTER_GETEVENTS; | |
fc2dc21b | 811 | if (ring_flags & IORING_SQ_NEED_WAKEUP) |
b532dd6d | 812 | flags |= IORING_ENTER_SQ_WAKEUP; |
e0abe388 | 813 | ret = io_uring_enter(s, to_submit, to_wait, flags); |
ce1705de | 814 | s->calls++; |
fc2dc21b JA |
815 | } else { |
816 | /* for SQPOLL, we submitted it all effectively */ | |
817 | ret = to_submit; | |
ce1705de | 818 | } |
c9fb4c5b | 819 | |
ce1705de JA |
820 | /* |
821 | * For non SQ thread poll, we already got the events we needed | |
822 | * through the io_uring_enter() above. For SQ thread poll, we | |
823 | * need to loop here until we find enough events. | |
824 | */ | |
825 | this_reap = 0; | |
826 | do { | |
827 | int r; | |
256714ea JA |
828 | |
829 | r = reap_events_uring(s); | |
7d1435e6 JA |
830 | if (r == -1) { |
831 | s->finish = 1; | |
ce1705de | 832 | break; |
7d1435e6 | 833 | } else if (r > 0) |
ce1705de JA |
834 | this_reap += r; |
835 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
836 | s->reaps += this_reap; |
837 | ||
838 | if (ret >= 0) { | |
839 | if (!ret) { | |
840 | to_submit = 0; | |
841 | if (s->inflight) | |
842 | goto submit; | |
843 | continue; | |
844 | } else if (ret < to_submit) { | |
845 | int diff = to_submit - ret; | |
846 | ||
847 | s->done += ret; | |
848 | prepped -= diff; | |
849 | goto submit_more; | |
850 | } | |
851 | s->done += ret; | |
852 | prepped = 0; | |
853 | continue; | |
854 | } else if (ret < 0) { | |
ac122fea | 855 | if (errno == EAGAIN) { |
c9fb4c5b JA |
856 | if (s->finish) |
857 | break; | |
858 | if (this_reap) | |
859 | goto submit; | |
c9fb4c5b JA |
860 | to_submit = 0; |
861 | goto submit; | |
862 | } | |
ac122fea | 863 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
864 | break; |
865 | } | |
866 | } while (!s->finish); | |
a7086591 | 867 | |
c9fb4c5b JA |
868 | finish = 1; |
869 | return NULL; | |
870 | } | |
871 | ||
54319661 JA |
872 | static struct submitter *get_submitter(int offset) |
873 | { | |
874 | void *ret; | |
875 | ||
876 | ret = submitter; | |
877 | if (offset) | |
878 | ret += offset * (sizeof(*submitter) + depth * sizeof(struct iovec)); | |
879 | return ret; | |
880 | } | |
881 | ||
65e1a5e8 | 882 | static void do_finish(const char *reason) |
c9fb4c5b | 883 | { |
54319661 | 884 | int j; |
65e1a5e8 | 885 | printf("Exiting on %s\n", reason); |
54319661 JA |
886 | for (j = 0; j < nthreads; j++) { |
887 | struct submitter *s = get_submitter(j); | |
888 | s->finish = 1; | |
889 | } | |
16d25711 | 890 | if (max_iops > 100000) |
18b557a0 | 891 | printf("Maximum IOPS=%luK\n", max_iops / 1000); |
16d25711 | 892 | else if (max_iops) |
18b557a0 | 893 | printf("Maximum IOPS=%lu\n", max_iops); |
c9fb4c5b JA |
894 | finish = 1; |
895 | } | |
896 | ||
65e1a5e8 EV |
897 | static void sig_int(int sig) |
898 | { | |
899 | do_finish("signal"); | |
900 | } | |
901 | ||
c9fb4c5b JA |
902 | static void arm_sig_int(void) |
903 | { | |
904 | struct sigaction act; | |
905 | ||
906 | memset(&act, 0, sizeof(act)); | |
907 | act.sa_handler = sig_int; | |
908 | act.sa_flags = SA_RESTART; | |
909 | sigaction(SIGINT, &act, NULL); | |
2cf71009 BP |
910 | |
911 | /* Windows uses SIGBREAK as a quit signal from other applications */ | |
912 | #ifdef WIN32 | |
913 | sigaction(SIGBREAK, &act, NULL); | |
914 | #endif | |
c9fb4c5b JA |
915 | } |
916 | ||
256714ea JA |
917 | static int setup_aio(struct submitter *s) |
918 | { | |
919 | #ifdef CONFIG_LIBAIO | |
920 | if (polled) { | |
921 | fprintf(stderr, "aio does not support polled IO\n"); | |
922 | polled = 0; | |
923 | } | |
924 | if (sq_thread_poll) { | |
925 | fprintf(stderr, "aio does not support SQPOLL IO\n"); | |
926 | sq_thread_poll = 0; | |
927 | } | |
928 | if (do_nop) { | |
929 | fprintf(stderr, "aio does not support polled IO\n"); | |
930 | do_nop = 0; | |
931 | } | |
932 | if (fixedbufs || register_files) { | |
933 | fprintf(stderr, "aio does not support registered files or buffers\n"); | |
934 | fixedbufs = register_files = 0; | |
935 | } | |
936 | ||
937 | return io_queue_init(depth, &s->aio_ctx); | |
938 | #else | |
939 | fprintf(stderr, "Legacy AIO not available on this system/build\n"); | |
940 | errno = EINVAL; | |
941 | return -1; | |
942 | #endif | |
943 | } | |
944 | ||
c3e2fc25 JA |
945 | static int setup_ring(struct submitter *s) |
946 | { | |
e31b8288 JA |
947 | struct io_sq_ring *sring = &s->sq_ring; |
948 | struct io_cq_ring *cring = &s->cq_ring; | |
949 | struct io_uring_params p; | |
2ea53ca3 | 950 | int ret, fd; |
c3e2fc25 | 951 | void *ptr; |
c3e2fc25 JA |
952 | |
953 | memset(&p, 0, sizeof(p)); | |
954 | ||
7d1435e6 | 955 | if (polled && !do_nop) |
0e47f11b | 956 | p.flags |= IORING_SETUP_IOPOLL; |
3d7d00a3 | 957 | if (sq_thread_poll) { |
2ea53ca3 | 958 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 959 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 960 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
961 | p.sq_thread_cpu = sq_thread_cpu; |
962 | } | |
c3e2fc25 JA |
963 | } |
964 | ||
e39863e3 | 965 | fd = io_uring_setup(depth, &p); |
c3e2fc25 JA |
966 | if (fd < 0) { |
967 | perror("io_uring_setup"); | |
968 | return 1; | |
969 | } | |
f310970e | 970 | s->ring_fd = fd; |
2ea53ca3 | 971 | |
b3915995 JA |
972 | io_uring_probe(fd); |
973 | ||
2ea53ca3 | 974 | if (fixedbufs) { |
15130e3f JA |
975 | struct rlimit rlim; |
976 | ||
977 | rlim.rlim_cur = RLIM_INFINITY; | |
978 | rlim.rlim_max = RLIM_INFINITY; | |
979 | /* ignore potential error, not needed on newer kernels */ | |
980 | setrlimit(RLIMIT_MEMLOCK, &rlim); | |
981 | ||
2ea53ca3 JA |
982 | ret = io_uring_register_buffers(s); |
983 | if (ret < 0) { | |
a7abc9fb | 984 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
985 | return 1; |
986 | } | |
a71ad043 JA |
987 | |
988 | if (dma_map) { | |
989 | ret = io_uring_map_buffers(s); | |
990 | if (ret < 0) { | |
991 | perror("io_uring_map_buffers"); | |
992 | return 1; | |
993 | } | |
994 | } | |
2ea53ca3 JA |
995 | } |
996 | ||
8c5fa755 JA |
997 | if (register_files) { |
998 | ret = io_uring_register_files(s); | |
999 | if (ret < 0) { | |
1000 | perror("io_uring_register_files"); | |
1001 | return 1; | |
1002 | } | |
a7abc9fb JA |
1003 | } |
1004 | ||
e2239016 | 1005 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
1006 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
1007 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
1008 | sring->head = ptr + p.sq_off.head; |
1009 | sring->tail = ptr + p.sq_off.tail; | |
1010 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
1011 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 1012 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 1013 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
1014 | sq_ring_mask = *sring->ring_mask; |
1015 | ||
f0403f94 | 1016 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 1017 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 | 1018 | IORING_OFF_SQES); |
c3e2fc25 | 1019 | |
f0403f94 | 1020 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
1021 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
1022 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
1023 | cring->head = ptr + p.cq_off.head; |
1024 | cring->tail = ptr + p.cq_off.tail; | |
1025 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
1026 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 1027 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
1028 | cq_ring_mask = *cring->ring_mask; |
1029 | return 0; | |
1030 | } | |
1031 | ||
2e7888ef JA |
1032 | static void file_depths(char *buf) |
1033 | { | |
26976a13 | 1034 | bool prev = false; |
2e7888ef | 1035 | char *p; |
54319661 | 1036 | int i, j; |
2e7888ef | 1037 | |
ac21bfab | 1038 | buf[0] = '\0'; |
2e7888ef | 1039 | p = buf; |
54319661 JA |
1040 | for (j = 0; j < nthreads; j++) { |
1041 | struct submitter *s = get_submitter(j); | |
2e7888ef | 1042 | |
54319661 JA |
1043 | for (i = 0; i < s->nr_files; i++) { |
1044 | struct file *f = &s->files[i]; | |
1045 | ||
26976a13 JA |
1046 | if (prev) |
1047 | p += sprintf(p, " %d", f->pending_ios); | |
54319661 | 1048 | else |
4f215227 | 1049 | p += sprintf(p, "%d", f->pending_ios); |
26976a13 | 1050 | prev = true; |
54319661 | 1051 | } |
2e7888ef JA |
1052 | } |
1053 | } | |
1054 | ||
d79ff8c9 | 1055 | static void usage(char *argv, int status) |
e39863e3 | 1056 | { |
65e1a5e8 EV |
1057 | char runtime_str[16]; |
1058 | snprintf(runtime_str, sizeof(runtime_str), "%d", runtime); | |
e39863e3 | 1059 | printf("%s [options] -- [filenames]\n" |
35268e11 AJ |
1060 | " -d <int> : IO Depth, default %d\n" |
1061 | " -s <int> : Batch submit, default %d\n" | |
1062 | " -c <int> : Batch complete, default %d\n" | |
1063 | " -b <int> : Block size, default %d\n" | |
1064 | " -p <bool> : Polled IO, default %d\n" | |
1065 | " -B <bool> : Fixed buffers, default %d\n" | |
dd1f1ba0 | 1066 | " -D <bool> : DMA map fixed buffers, default %d\n" |
35268e11 | 1067 | " -F <bool> : Register files, default %d\n" |
0862f718 | 1068 | " -n <int> : Number of threads, default %d\n" |
2686fc22 | 1069 | " -O <bool> : Use O_DIRECT, default %d\n" |
4a39c524 EV |
1070 | " -N <bool> : Perform just no-op requests, default %d\n" |
1071 | " -t <bool> : Track IO latencies, default %d\n" | |
256714ea | 1072 | " -T <int> : TSC rate in HZ\n" |
65e1a5e8 EV |
1073 | " -a <bool> : Use legacy aio, default %d\n" |
1074 | " -r <int> : Runtime in seconds, default %s\n", | |
35268e11 | 1075 | argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE, BS, polled, |
a71ad043 JA |
1076 | fixedbufs, dma_map, register_files, nthreads, !buffered, do_nop, |
1077 | stats, aio, runtime == 0 ? "unlimited" : runtime_str); | |
d79ff8c9 | 1078 | exit(status); |
e39863e3 KB |
1079 | } |
1080 | ||
203e4c26 JA |
1081 | static void read_tsc_rate(void) |
1082 | { | |
1083 | char buffer[32]; | |
1084 | int fd, ret; | |
1085 | ||
1086 | if (tsc_rate) | |
1087 | return; | |
1088 | ||
1089 | fd = open(TSC_RATE_FILE, O_RDONLY); | |
1090 | if (fd < 0) | |
1091 | return; | |
1092 | ||
1093 | ret = read(fd, buffer, sizeof(buffer)); | |
1094 | if (ret < 0) { | |
1095 | close(fd); | |
1096 | return; | |
1097 | } | |
1098 | ||
1099 | tsc_rate = strtoul(buffer, NULL, 10); | |
1100 | printf("Using TSC rate %luHz\n", tsc_rate); | |
1101 | close(fd); | |
1102 | } | |
1103 | ||
1104 | static void write_tsc_rate(void) | |
1105 | { | |
1106 | char buffer[32]; | |
1107 | struct stat sb; | |
1108 | int fd, ret; | |
1109 | ||
1110 | if (!stat(TSC_RATE_FILE, &sb)) | |
1111 | return; | |
1112 | ||
1113 | fd = open(TSC_RATE_FILE, O_WRONLY | O_CREAT, 0644); | |
1114 | if (fd < 0) | |
1115 | return; | |
1116 | ||
1117 | memset(buffer, 0, sizeof(buffer)); | |
1118 | sprintf(buffer, "%lu", tsc_rate); | |
1119 | ret = write(fd, buffer, strlen(buffer)); | |
1120 | if (ret < 0) | |
1121 | perror("write"); | |
1122 | close(fd); | |
1123 | } | |
1124 | ||
c9fb4c5b JA |
1125 | int main(int argc, char *argv[]) |
1126 | { | |
e39863e3 | 1127 | struct submitter *s; |
05138221 | 1128 | unsigned long done, calls, reap; |
d79ff8c9 AJ |
1129 | int err, i, j, flags, fd, opt, threads_per_f, threads_rem = 0, nfiles; |
1130 | struct file f; | |
2e7888ef | 1131 | char *fdepths; |
c3e2fc25 | 1132 | void *ret; |
c9fb4c5b | 1133 | |
0862f718 JA |
1134 | if (!do_nop && argc < 2) |
1135 | usage(argv[0], 1); | |
c9fb4c5b | 1136 | |
a71ad043 | 1137 | while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:N:O:t:T:a:r:D:h?")) != -1) { |
e39863e3 | 1138 | switch (opt) { |
256714ea JA |
1139 | case 'a': |
1140 | aio = !!atoi(optarg); | |
1141 | break; | |
e39863e3 KB |
1142 | case 'd': |
1143 | depth = atoi(optarg); | |
1144 | break; | |
1145 | case 's': | |
1146 | batch_submit = atoi(optarg); | |
932131c9 JA |
1147 | if (!batch_submit) |
1148 | batch_submit = 1; | |
e39863e3 KB |
1149 | break; |
1150 | case 'c': | |
1151 | batch_complete = atoi(optarg); | |
932131c9 JA |
1152 | if (!batch_complete) |
1153 | batch_complete = 1; | |
e39863e3 | 1154 | break; |
5bd526f2 JA |
1155 | case 'b': |
1156 | bs = atoi(optarg); | |
1157 | break; | |
1158 | case 'p': | |
1159 | polled = !!atoi(optarg); | |
1160 | break; | |
6a87c3b0 JA |
1161 | case 'B': |
1162 | fixedbufs = !!atoi(optarg); | |
1163 | break; | |
1164 | case 'F': | |
1165 | register_files = !!atoi(optarg); | |
1166 | break; | |
54319661 JA |
1167 | case 'n': |
1168 | nthreads = atoi(optarg); | |
caf2b9ac JA |
1169 | if (!nthreads) { |
1170 | printf("Threads must be non-zero\n"); | |
1171 | usage(argv[0], 1); | |
1172 | } | |
54319661 | 1173 | break; |
0862f718 JA |
1174 | case 'N': |
1175 | do_nop = !!atoi(optarg); | |
1176 | break; | |
2686fc22 JA |
1177 | case 'O': |
1178 | buffered = !atoi(optarg); | |
1179 | break; | |
932131c9 JA |
1180 | case 't': |
1181 | #ifndef ARCH_HAVE_CPU_CLOCK | |
1182 | fprintf(stderr, "Stats not supported on this CPU\n"); | |
1183 | return 1; | |
1184 | #endif | |
1185 | stats = !!atoi(optarg); | |
1186 | break; | |
1187 | case 'T': | |
1188 | #ifndef ARCH_HAVE_CPU_CLOCK | |
1189 | fprintf(stderr, "Stats not supported on this CPU\n"); | |
1190 | return 1; | |
1191 | #endif | |
1192 | tsc_rate = strtoul(optarg, NULL, 10); | |
203e4c26 | 1193 | write_tsc_rate(); |
932131c9 | 1194 | break; |
65e1a5e8 EV |
1195 | case 'r': |
1196 | runtime = atoi(optarg); | |
1197 | break; | |
a71ad043 JA |
1198 | case 'D': |
1199 | dma_map = !!atoi(optarg); | |
1200 | break; | |
e39863e3 KB |
1201 | case 'h': |
1202 | case '?': | |
1203 | default: | |
d79ff8c9 | 1204 | usage(argv[0], 0); |
e39863e3 KB |
1205 | break; |
1206 | } | |
1207 | } | |
1208 | ||
203e4c26 JA |
1209 | if (stats) |
1210 | read_tsc_rate(); | |
1211 | ||
c5347611 JA |
1212 | if (batch_complete > depth) |
1213 | batch_complete = depth; | |
1214 | if (batch_submit > depth) | |
1215 | batch_submit = depth; | |
a71ad043 JA |
1216 | if (!fixedbufs && dma_map) |
1217 | dma_map = 0; | |
c5347611 | 1218 | |
54319661 JA |
1219 | submitter = calloc(nthreads, sizeof(*submitter) + |
1220 | depth * sizeof(struct iovec)); | |
1221 | for (j = 0; j < nthreads; j++) { | |
1222 | s = get_submitter(j); | |
1223 | s->index = j; | |
1224 | s->done = s->calls = s->reaps = 0; | |
1225 | } | |
e39863e3 | 1226 | |
701d1277 | 1227 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
1228 | if (!buffered) |
1229 | flags |= O_DIRECT; | |
1230 | ||
54319661 | 1231 | j = 0; |
e39863e3 | 1232 | i = optind; |
d79ff8c9 | 1233 | nfiles = argc - i; |
2ac00585 JA |
1234 | if (!do_nop) { |
1235 | if (!nfiles) { | |
1236 | printf("No files specified\n"); | |
1237 | usage(argv[0], 1); | |
1238 | } | |
1239 | threads_per_f = nthreads / nfiles; | |
1240 | /* make sure each thread gets assigned files */ | |
1241 | if (threads_per_f == 0) { | |
1242 | threads_per_f = 1; | |
1243 | } else { | |
1244 | threads_rem = nthreads - threads_per_f * nfiles; | |
1245 | } | |
d79ff8c9 | 1246 | } |
8025517d | 1247 | while (!do_nop && i < argc) { |
d79ff8c9 AJ |
1248 | int k, limit; |
1249 | ||
1250 | memset(&f, 0, sizeof(f)); | |
a7086591 JA |
1251 | |
1252 | fd = open(argv[i], flags); | |
1253 | if (fd < 0) { | |
1254 | perror("open"); | |
1255 | return 1; | |
1256 | } | |
d79ff8c9 AJ |
1257 | f.real_fd = fd; |
1258 | if (get_file_size(&f)) { | |
a7086591 JA |
1259 | printf("failed getting size of device/file\n"); |
1260 | return 1; | |
1261 | } | |
d79ff8c9 | 1262 | if (f.max_blocks <= 1) { |
a7086591 JA |
1263 | printf("Zero file/device size?\n"); |
1264 | return 1; | |
1265 | } | |
d79ff8c9 AJ |
1266 | f.max_blocks--; |
1267 | ||
1268 | limit = threads_per_f; | |
1269 | limit += threads_rem > 0 ? 1 : 0; | |
1270 | for (k = 0; k < limit; k++) { | |
1271 | s = get_submitter((j + k) % nthreads); | |
a7086591 | 1272 | |
d79ff8c9 AJ |
1273 | if (s->nr_files == MAX_FDS) { |
1274 | printf("Max number of files (%d) reached\n", MAX_FDS); | |
1275 | break; | |
1276 | } | |
1277 | ||
1278 | memcpy(&s->files[s->nr_files], &f, sizeof(f)); | |
1279 | ||
1280 | printf("Added file %s (submitter %d)\n", argv[i], s->index); | |
1281 | s->nr_files++; | |
1282 | } | |
1283 | threads_rem--; | |
a7086591 | 1284 | i++; |
d79ff8c9 | 1285 | j += limit; |
a7086591 JA |
1286 | } |
1287 | ||
c9fb4c5b JA |
1288 | arm_sig_int(); |
1289 | ||
54319661 JA |
1290 | for (j = 0; j < nthreads; j++) { |
1291 | s = get_submitter(j); | |
1292 | for (i = 0; i < depth; i++) { | |
1293 | void *buf; | |
c9fb4c5b | 1294 | |
54319661 JA |
1295 | if (posix_memalign(&buf, bs, bs)) { |
1296 | printf("failed alloc\n"); | |
1297 | return 1; | |
1298 | } | |
1299 | s->iovecs[i].iov_base = buf; | |
1300 | s->iovecs[i].iov_len = bs; | |
c9fb4c5b | 1301 | } |
c9fb4c5b JA |
1302 | } |
1303 | ||
54319661 JA |
1304 | for (j = 0; j < nthreads; j++) { |
1305 | s = get_submitter(j); | |
1306 | ||
256714ea JA |
1307 | if (!aio) |
1308 | err = setup_ring(s); | |
1309 | else | |
1310 | err = setup_aio(s); | |
54319661 JA |
1311 | if (err) { |
1312 | printf("ring setup failed: %s, %d\n", strerror(errno), err); | |
1313 | return 1; | |
1314 | } | |
c9fb4c5b | 1315 | } |
54319661 | 1316 | s = get_submitter(0); |
a71ad043 | 1317 | printf("polled=%d, fixedbufs=%d/%d, register_files=%d, buffered=%d, QD=%d\n", polled, fixedbufs, dma_map, register_files, buffered, depth); |
256714ea JA |
1318 | if (!aio) |
1319 | printf("Engine=io_uring, sq_ring=%d, cq_ring=%d\n", *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); | |
256714ea | 1320 | else |
09ee86fa | 1321 | printf("Engine=aio\n"); |
c9fb4c5b | 1322 | |
54319661 JA |
1323 | for (j = 0; j < nthreads; j++) { |
1324 | s = get_submitter(j); | |
256714ea JA |
1325 | if (!aio) |
1326 | pthread_create(&s->thread, NULL, submitter_uring_fn, s); | |
1327 | #ifdef CONFIG_LIBAIO | |
1328 | else | |
1329 | pthread_create(&s->thread, NULL, submitter_aio_fn, s); | |
1330 | #endif | |
54319661 | 1331 | } |
c9fb4c5b | 1332 | |
54319661 | 1333 | fdepths = malloc(8 * s->nr_files * nthreads); |
05138221 | 1334 | reap = calls = done = 0; |
c9fb4c5b JA |
1335 | do { |
1336 | unsigned long this_done = 0; | |
1337 | unsigned long this_reap = 0; | |
1338 | unsigned long this_call = 0; | |
1339 | unsigned long rpc = 0, ipc = 0; | |
f3057d26 | 1340 | unsigned long iops, bw; |
c9fb4c5b JA |
1341 | |
1342 | sleep(1); | |
65e1a5e8 EV |
1343 | if (runtime && !--runtime) |
1344 | do_finish("timeout"); | |
a1f17100 JA |
1345 | |
1346 | /* don't print partial run, if interrupted by signal */ | |
1347 | if (finish) | |
1348 | break; | |
52479d8b JA |
1349 | |
1350 | /* one second in to the run, enable stats */ | |
1351 | if (stats) | |
1352 | stats_running = 1; | |
1353 | ||
54319661 | 1354 | for (j = 0; j < nthreads; j++) { |
7d1ce4b7 | 1355 | s = get_submitter(j); |
54319661 JA |
1356 | this_done += s->done; |
1357 | this_call += s->calls; | |
1358 | this_reap += s->reaps; | |
1359 | } | |
c9fb4c5b JA |
1360 | if (this_call - calls) { |
1361 | rpc = (this_done - done) / (this_call - calls); | |
1362 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
1363 | } else |
1364 | rpc = ipc = -1; | |
2e7888ef | 1365 | file_depths(fdepths); |
22fd3501 | 1366 | iops = this_done - done; |
f3057d26 JA |
1367 | if (bs > 1048576) |
1368 | bw = iops * (bs / 1048576); | |
1369 | else | |
1370 | bw = iops / (1048576 / bs); | |
dc10c23a JA |
1371 | if (iops > 100000) |
1372 | printf("IOPS=%luK, ", iops / 1000); | |
1373 | else | |
53b5fa1e | 1374 | printf("IOPS=%lu, ", iops); |
16d25711 | 1375 | max_iops = max(max_iops, iops); |
6c5d3a1c JA |
1376 | if (!do_nop) |
1377 | printf("BW=%luMiB/s, ", bw); | |
1378 | printf("IOS/call=%ld/%ld, inflight=(%s)\n", rpc, ipc, fdepths); | |
c9fb4c5b JA |
1379 | done = this_done; |
1380 | calls = this_call; | |
1381 | reap = this_reap; | |
1382 | } while (!finish); | |
1383 | ||
54319661 JA |
1384 | for (j = 0; j < nthreads; j++) { |
1385 | s = get_submitter(j); | |
1386 | pthread_join(s->thread, &ret); | |
1387 | close(s->ring_fd); | |
932131c9 JA |
1388 | |
1389 | if (stats) { | |
1390 | unsigned long nr; | |
1391 | ||
1392 | printf("%d: Latency percentiles:\n", s->tid); | |
1393 | for (i = 0, nr = 0; i < PLAT_NR; i++) | |
1394 | nr += s->plat[i]; | |
1395 | show_clat_percentiles(s->plat, nr, 4); | |
1396 | free(s->clock_batch); | |
1397 | free(s->plat); | |
1398 | } | |
54319661 | 1399 | } |
932131c9 | 1400 | |
2e7888ef | 1401 | free(fdepths); |
54319661 | 1402 | free(submitter); |
c9fb4c5b JA |
1403 | return 0; |
1404 | } |