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; | |
beda9d8d JA |
63 | unsigned long max_size; |
64 | unsigned long cur_off; | |
701d1277 | 65 | unsigned pending_ios; |
48e698fa JA |
66 | int real_fd; |
67 | int fixed_fd; | |
932131c9 | 68 | int fileno; |
a7086591 JA |
69 | }; |
70 | ||
932131c9 JA |
71 | #define PLAT_BITS 6 |
72 | #define PLAT_VAL (1 << PLAT_BITS) | |
73 | #define PLAT_GROUP_NR 29 | |
74 | #define PLAT_NR (PLAT_GROUP_NR * PLAT_VAL) | |
75 | ||
c9fb4c5b JA |
76 | struct submitter { |
77 | pthread_t thread; | |
f310970e | 78 | int ring_fd; |
54319661 | 79 | int index; |
e31b8288 | 80 | struct io_sq_ring sq_ring; |
f0403f94 | 81 | struct io_uring_sqe *sqes; |
e31b8288 | 82 | struct io_cq_ring cq_ring; |
c9fb4c5b | 83 | int inflight; |
932131c9 | 84 | int tid; |
c9fb4c5b JA |
85 | unsigned long reaps; |
86 | unsigned long done; | |
87 | unsigned long calls; | |
88 | volatile int finish; | |
701d1277 | 89 | |
48e698fa JA |
90 | __s32 *fds; |
91 | ||
9eff5320 JA |
92 | struct taus258_state rand_state; |
93 | ||
932131c9 JA |
94 | unsigned long *clock_batch; |
95 | int clock_index; | |
96 | unsigned long *plat; | |
97 | ||
256714ea JA |
98 | #ifdef CONFIG_LIBAIO |
99 | io_context_t aio_ctx; | |
100 | #endif | |
101 | ||
a7086591 JA |
102 | struct file files[MAX_FDS]; |
103 | unsigned nr_files; | |
104 | unsigned cur_file; | |
e39863e3 | 105 | struct iovec iovecs[]; |
c9fb4c5b JA |
106 | }; |
107 | ||
e39863e3 | 108 | static struct submitter *submitter; |
c9fb4c5b | 109 | static volatile int finish; |
52479d8b | 110 | static int stats_running; |
16d25711 | 111 | static unsigned long max_iops; |
c9fb4c5b | 112 | |
e39863e3 KB |
113 | static int depth = DEPTH; |
114 | static int batch_submit = BATCH_SUBMIT; | |
115 | static int batch_complete = BATCH_COMPLETE; | |
5bd526f2 | 116 | static int bs = BS; |
f0403f94 | 117 | static int polled = 1; /* use IO polling */ |
701d1277 | 118 | static int fixedbufs = 1; /* use fixed user buffers */ |
a71ad043 | 119 | static int dma_map; /* pre-map DMA buffers */ |
8c5fa755 | 120 | static int register_files = 1; /* use fixed files */ |
f0403f94 | 121 | static int buffered = 0; /* use buffered IO, not O_DIRECT */ |
3d7d00a3 JA |
122 | static int sq_thread_poll = 0; /* use kernel submission/poller thread */ |
123 | static int sq_thread_cpu = -1; /* pin above thread to this CPU */ | |
8025517d | 124 | static int do_nop = 0; /* no-op SQ ring commands */ |
54319661 | 125 | static int nthreads = 1; |
932131c9 | 126 | static int stats = 0; /* generate IO stats */ |
256714ea | 127 | static int aio = 0; /* use libaio */ |
beda9d8d JA |
128 | static int runtime = 0; /* runtime */ |
129 | static int random_io = 1; /* random or sequential IO */ | |
256714ea | 130 | |
932131c9 | 131 | static unsigned long tsc_rate; |
c9fb4c5b | 132 | |
203e4c26 JA |
133 | #define TSC_RATE_FILE "tsc-rate" |
134 | ||
84106576 | 135 | static int vectored = 1; |
b3915995 | 136 | |
932131c9 | 137 | static float plist[] = { 1.0, 5.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, |
ad45a465 | 138 | 80.0, 90.0, 95.0, 99.0, 99.5, 99.9, 99.95, 99.99 }; |
932131c9 JA |
139 | static int plist_len = 17; |
140 | ||
a71ad043 | 141 | #ifndef IORING_REGISTER_MAP_BUFFERS |
8538256c | 142 | #define IORING_REGISTER_MAP_BUFFERS 22 |
a71ad043 JA |
143 | struct io_uring_map_buffers { |
144 | __s32 fd; | |
145 | __u32 buf_start; | |
146 | __u32 buf_end; | |
702b0be2 JA |
147 | __u32 flags; |
148 | __u64 rsvd[2]; | |
a71ad043 JA |
149 | }; |
150 | #endif | |
151 | ||
932131c9 JA |
152 | static unsigned long cycles_to_nsec(unsigned long cycles) |
153 | { | |
154 | uint64_t val; | |
155 | ||
156 | if (!tsc_rate) | |
157 | return cycles; | |
158 | ||
159 | val = cycles * 1000000000ULL; | |
160 | return val / tsc_rate; | |
161 | } | |
162 | ||
163 | static unsigned long plat_idx_to_val(unsigned int idx) | |
164 | { | |
165 | unsigned int error_bits; | |
166 | unsigned long k, base; | |
167 | ||
168 | assert(idx < PLAT_NR); | |
169 | ||
170 | /* MSB <= (PLAT_BITS-1), cannot be rounded off. Use | |
171 | * all bits of the sample as index */ | |
172 | if (idx < (PLAT_VAL << 1)) | |
173 | return cycles_to_nsec(idx); | |
174 | ||
175 | /* Find the group and compute the minimum value of that group */ | |
176 | error_bits = (idx >> PLAT_BITS) - 1; | |
177 | base = ((unsigned long) 1) << (error_bits + PLAT_BITS); | |
178 | ||
179 | /* Find its bucket number of the group */ | |
180 | k = idx % PLAT_VAL; | |
181 | ||
182 | /* Return the mean of the range of the bucket */ | |
183 | return cycles_to_nsec(base + ((k + 0.5) * (1 << error_bits))); | |
184 | } | |
185 | ||
186 | unsigned int calc_clat_percentiles(unsigned long *io_u_plat, unsigned long nr, | |
187 | unsigned long **output, | |
188 | unsigned long *maxv, unsigned long *minv) | |
189 | { | |
190 | unsigned long sum = 0; | |
191 | unsigned int len = plist_len, i, j = 0; | |
192 | unsigned long *ovals = NULL; | |
193 | bool is_last; | |
194 | ||
bb209d68 | 195 | *minv = -1UL; |
932131c9 JA |
196 | *maxv = 0; |
197 | ||
198 | ovals = malloc(len * sizeof(*ovals)); | |
199 | if (!ovals) | |
200 | return 0; | |
201 | ||
202 | /* | |
203 | * Calculate bucket values, note down max and min values | |
204 | */ | |
205 | is_last = false; | |
206 | for (i = 0; i < PLAT_NR && !is_last; i++) { | |
207 | sum += io_u_plat[i]; | |
208 | while (sum >= ((long double) plist[j] / 100.0 * nr)) { | |
209 | assert(plist[j] <= 100.0); | |
210 | ||
211 | ovals[j] = plat_idx_to_val(i); | |
212 | if (ovals[j] < *minv) | |
213 | *minv = ovals[j]; | |
214 | if (ovals[j] > *maxv) | |
215 | *maxv = ovals[j]; | |
216 | ||
217 | is_last = (j == len - 1) != 0; | |
218 | if (is_last) | |
219 | break; | |
220 | ||
221 | j++; | |
222 | } | |
223 | } | |
224 | ||
225 | if (!is_last) | |
226 | fprintf(stderr, "error calculating latency percentiles\n"); | |
227 | ||
228 | *output = ovals; | |
229 | return len; | |
230 | } | |
231 | ||
232 | static void show_clat_percentiles(unsigned long *io_u_plat, unsigned long nr, | |
233 | unsigned int precision) | |
234 | { | |
235 | unsigned int divisor, len, i, j = 0; | |
236 | unsigned long minv, maxv; | |
237 | unsigned long *ovals; | |
238 | int per_line, scale_down, time_width; | |
239 | bool is_last; | |
240 | char fmt[32]; | |
241 | ||
242 | len = calc_clat_percentiles(io_u_plat, nr, &ovals, &maxv, &minv); | |
243 | if (!len || !ovals) | |
244 | goto out; | |
245 | ||
246 | if (!tsc_rate) { | |
247 | scale_down = 0; | |
248 | divisor = 1; | |
249 | printf(" percentiles (tsc ticks):\n |"); | |
250 | } else if (minv > 2000 && maxv > 99999) { | |
251 | scale_down = 1; | |
252 | divisor = 1000; | |
253 | printf(" percentiles (usec):\n |"); | |
254 | } else { | |
255 | scale_down = 0; | |
256 | divisor = 1; | |
257 | printf(" percentiles (nsec):\n |"); | |
258 | } | |
259 | ||
260 | time_width = max(5, (int) (log10(maxv / divisor) + 1)); | |
261 | snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3, | |
262 | precision, time_width); | |
263 | /* fmt will be something like " %5.2fth=[%4llu]%c" */ | |
264 | per_line = (80 - 7) / (precision + 10 + time_width); | |
265 | ||
266 | for (j = 0; j < len; j++) { | |
267 | /* for formatting */ | |
268 | if (j != 0 && (j % per_line) == 0) | |
269 | printf(" |"); | |
270 | ||
271 | /* end of the list */ | |
272 | is_last = (j == len - 1) != 0; | |
273 | ||
274 | for (i = 0; i < scale_down; i++) | |
275 | ovals[j] = (ovals[j] + 999) / 1000; | |
276 | ||
277 | printf(fmt, plist[j], ovals[j], is_last ? '\n' : ','); | |
278 | ||
279 | if (is_last) | |
280 | break; | |
281 | ||
282 | if ((j % per_line) == per_line - 1) /* for formatting */ | |
283 | printf("\n"); | |
284 | } | |
285 | ||
286 | out: | |
287 | free(ovals); | |
288 | } | |
289 | ||
b65c1fc0 | 290 | #ifdef ARCH_HAVE_CPU_CLOCK |
932131c9 JA |
291 | static unsigned int plat_val_to_idx(unsigned long val) |
292 | { | |
293 | unsigned int msb, error_bits, base, offset, idx; | |
294 | ||
295 | /* Find MSB starting from bit 0 */ | |
296 | if (val == 0) | |
297 | msb = 0; | |
298 | else | |
299 | msb = (sizeof(val)*8) - __builtin_clzll(val) - 1; | |
300 | ||
301 | /* | |
302 | * MSB <= (PLAT_BITS-1), cannot be rounded off. Use | |
303 | * all bits of the sample as index | |
304 | */ | |
305 | if (msb <= PLAT_BITS) | |
306 | return val; | |
307 | ||
308 | /* Compute the number of error bits to discard*/ | |
309 | error_bits = msb - PLAT_BITS; | |
310 | ||
311 | /* Compute the number of buckets before the group */ | |
312 | base = (error_bits + 1) << PLAT_BITS; | |
313 | ||
314 | /* | |
315 | * Discard the error bits and apply the mask to find the | |
316 | * index for the buckets in the group | |
317 | */ | |
318 | offset = (PLAT_VAL - 1) & (val >> error_bits); | |
319 | ||
320 | /* Make sure the index does not exceed (array size - 1) */ | |
321 | idx = (base + offset) < (PLAT_NR - 1) ? | |
322 | (base + offset) : (PLAT_NR - 1); | |
323 | ||
324 | return idx; | |
325 | } | |
b65c1fc0 | 326 | #endif |
932131c9 JA |
327 | |
328 | static void add_stat(struct submitter *s, int clock_index, int nr) | |
329 | { | |
330 | #ifdef ARCH_HAVE_CPU_CLOCK | |
331 | unsigned long cycles; | |
332 | unsigned int pidx; | |
333 | ||
265697fc JA |
334 | if (!s->finish && clock_index) { |
335 | cycles = get_cpu_clock(); | |
336 | cycles -= s->clock_batch[clock_index]; | |
337 | pidx = plat_val_to_idx(cycles); | |
338 | s->plat[pidx] += nr; | |
339 | } | |
932131c9 JA |
340 | #endif |
341 | } | |
342 | ||
a71ad043 JA |
343 | static int io_uring_map_buffers(struct submitter *s) |
344 | { | |
345 | struct io_uring_map_buffers map = { | |
346 | .fd = s->files[0].real_fd, | |
a71ad043 | 347 | .buf_end = depth, |
a71ad043 JA |
348 | }; |
349 | ||
350 | if (do_nop) | |
351 | return 0; | |
d49885aa JA |
352 | if (s->nr_files > 1) |
353 | fprintf(stdout, "Mapping buffers may not work with multiple files\n"); | |
a71ad043 JA |
354 | |
355 | return syscall(__NR_io_uring_register, s->ring_fd, | |
356 | IORING_REGISTER_MAP_BUFFERS, &map, 1); | |
357 | } | |
358 | ||
2ea53ca3 | 359 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 360 | { |
8025517d JA |
361 | if (do_nop) |
362 | return 0; | |
363 | ||
bfed648c | 364 | return syscall(__NR_io_uring_register, s->ring_fd, |
55845033 | 365 | IORING_REGISTER_BUFFERS, s->iovecs, roundup_pow2(depth)); |
2ea53ca3 JA |
366 | } |
367 | ||
a7abc9fb JA |
368 | static int io_uring_register_files(struct submitter *s) |
369 | { | |
48e698fa | 370 | int i; |
a7abc9fb | 371 | |
8025517d JA |
372 | if (do_nop) |
373 | return 0; | |
374 | ||
48e698fa JA |
375 | s->fds = calloc(s->nr_files, sizeof(__s32)); |
376 | for (i = 0; i < s->nr_files; i++) { | |
377 | s->fds[i] = s->files[i].real_fd; | |
378 | s->files[i].fixed_fd = i; | |
379 | } | |
a7abc9fb | 380 | |
bfed648c | 381 | return syscall(__NR_io_uring_register, s->ring_fd, |
919850d2 | 382 | IORING_REGISTER_FILES, s->fds, s->nr_files); |
a7abc9fb JA |
383 | } |
384 | ||
2ea53ca3 JA |
385 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) |
386 | { | |
1db268db JA |
387 | /* |
388 | * Clamp CQ ring size at our SQ ring size, we don't need more entries | |
389 | * than that. | |
390 | */ | |
391 | p->flags |= IORING_SETUP_CQSIZE; | |
392 | p->cq_entries = entries; | |
393 | ||
bfed648c | 394 | return syscall(__NR_io_uring_setup, entries, p); |
c9fb4c5b JA |
395 | } |
396 | ||
b3915995 JA |
397 | static void io_uring_probe(int fd) |
398 | { | |
399 | struct io_uring_probe *p; | |
400 | int ret; | |
401 | ||
402 | p = malloc(sizeof(*p) + 256 * sizeof(struct io_uring_probe_op)); | |
403 | if (!p) | |
404 | return; | |
405 | ||
406 | memset(p, 0, sizeof(*p) + 256 * sizeof(struct io_uring_probe_op)); | |
407 | ret = syscall(__NR_io_uring_register, fd, IORING_REGISTER_PROBE, p, 256); | |
408 | if (ret < 0) | |
409 | goto out; | |
410 | ||
411 | if (IORING_OP_READ > p->ops_len) | |
412 | goto out; | |
413 | ||
414 | if ((p->ops[IORING_OP_READ].flags & IO_URING_OP_SUPPORTED)) | |
84106576 | 415 | vectored = 0; |
b3915995 JA |
416 | out: |
417 | free(p); | |
418 | } | |
419 | ||
c3e2fc25 JA |
420 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
421 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 422 | { |
c377f4f8 JA |
423 | #ifdef FIO_ARCH_HAS_SYSCALL |
424 | return __do_syscall6(__NR_io_uring_enter, s->ring_fd, to_submit, | |
425 | min_complete, flags, NULL, 0); | |
426 | #else | |
bfed648c JA |
427 | return syscall(__NR_io_uring_enter, s->ring_fd, to_submit, min_complete, |
428 | flags, NULL, 0); | |
c377f4f8 | 429 | #endif |
c9fb4c5b JA |
430 | } |
431 | ||
77d814a1 | 432 | #ifndef CONFIG_HAVE_GETTID |
c9fb4c5b JA |
433 | static int gettid(void) |
434 | { | |
435 | return syscall(__NR_gettid); | |
436 | } | |
77d814a1 | 437 | #endif |
c9fb4c5b | 438 | |
701d1277 JA |
439 | static unsigned file_depth(struct submitter *s) |
440 | { | |
e39863e3 | 441 | return (depth + s->nr_files - 1) / s->nr_files; |
701d1277 JA |
442 | } |
443 | ||
a7086591 | 444 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 445 | { |
f0403f94 | 446 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 447 | unsigned long offset; |
a7086591 | 448 | struct file *f; |
c9fb4c5b JA |
449 | long r; |
450 | ||
8025517d JA |
451 | if (do_nop) { |
452 | sqe->opcode = IORING_OP_NOP; | |
453 | return; | |
454 | } | |
455 | ||
701d1277 JA |
456 | if (s->nr_files == 1) { |
457 | f = &s->files[0]; | |
458 | } else { | |
459 | f = &s->files[s->cur_file]; | |
460 | if (f->pending_ios >= file_depth(s)) { | |
461 | s->cur_file++; | |
462 | if (s->cur_file == s->nr_files) | |
463 | s->cur_file = 0; | |
93d1811c | 464 | f = &s->files[s->cur_file]; |
701d1277 JA |
465 | } |
466 | } | |
467 | f->pending_ios++; | |
a7086591 | 468 | |
beda9d8d JA |
469 | if (random_io) { |
470 | r = __rand64(&s->rand_state); | |
471 | offset = (r % (f->max_blocks - 1)) * bs; | |
472 | } else { | |
473 | offset = f->cur_off; | |
474 | f->cur_off += bs; | |
475 | if (f->cur_off + bs > f->max_size) | |
476 | f->cur_off = 0; | |
477 | } | |
c9fb4c5b | 478 | |
8c5fa755 JA |
479 | if (register_files) { |
480 | sqe->flags = IOSQE_FIXED_FILE; | |
481 | sqe->fd = f->fixed_fd; | |
482 | } else { | |
483 | sqe->flags = 0; | |
484 | sqe->fd = f->real_fd; | |
485 | } | |
f0403f94 | 486 | if (fixedbufs) { |
48e698fa | 487 | sqe->opcode = IORING_OP_READ_FIXED; |
919850d2 | 488 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; |
5bd526f2 | 489 | sqe->len = bs; |
2ea53ca3 | 490 | sqe->buf_index = index; |
84106576 | 491 | } else if (!vectored) { |
b3915995 JA |
492 | sqe->opcode = IORING_OP_READ; |
493 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; | |
494 | sqe->len = bs; | |
495 | sqe->buf_index = 0; | |
84106576 JA |
496 | } else { |
497 | sqe->opcode = IORING_OP_READV; | |
498 | sqe->addr = (unsigned long) &s->iovecs[index]; | |
499 | sqe->len = 1; | |
500 | sqe->buf_index = 0; | |
f0403f94 | 501 | } |
f0403f94 | 502 | sqe->ioprio = 0; |
f0403f94 | 503 | sqe->off = offset; |
932131c9 | 504 | sqe->user_data = (unsigned long) f->fileno; |
52479d8b | 505 | if (stats && stats_running) |
bb209d68 | 506 | sqe->user_data |= ((uint64_t)s->clock_index << 32); |
c9fb4c5b JA |
507 | } |
508 | ||
256714ea | 509 | static int prep_more_ios_uring(struct submitter *s, int max_ios) |
c9fb4c5b | 510 | { |
e31b8288 | 511 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 512 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 513 | |
c3e2fc25 | 514 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
515 | do { |
516 | next_tail++; | |
fc2dc21b | 517 | if (next_tail == atomic_load_acquire(ring->head)) |
c9fb4c5b JA |
518 | break; |
519 | ||
e39c34dc | 520 | index = tail & sq_ring_mask; |
a7086591 | 521 | init_io(s, index); |
c3e2fc25 | 522 | ring->array[index] = index; |
c9fb4c5b JA |
523 | prepped++; |
524 | tail = next_tail; | |
525 | } while (prepped < max_ios); | |
526 | ||
fc2dc21b JA |
527 | if (prepped) |
528 | atomic_store_release(ring->tail, tail); | |
c9fb4c5b JA |
529 | return prepped; |
530 | } | |
531 | ||
a7086591 | 532 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
533 | { |
534 | struct stat st; | |
535 | ||
48e698fa | 536 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
537 | return -1; |
538 | if (S_ISBLK(st.st_mode)) { | |
539 | unsigned long long bytes; | |
540 | ||
48e698fa | 541 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
542 | return -1; |
543 | ||
5bd526f2 | 544 | f->max_blocks = bytes / bs; |
beda9d8d | 545 | f->max_size = bytes; |
c9fb4c5b JA |
546 | return 0; |
547 | } else if (S_ISREG(st.st_mode)) { | |
5bd526f2 | 548 | f->max_blocks = st.st_size / bs; |
beda9d8d | 549 | f->max_size = st.st_size; |
c9fb4c5b JA |
550 | return 0; |
551 | } | |
552 | ||
553 | return -1; | |
554 | } | |
555 | ||
256714ea | 556 | static int reap_events_uring(struct submitter *s) |
c9fb4c5b | 557 | { |
e31b8288 | 558 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 559 | struct io_uring_cqe *cqe; |
e2239016 | 560 | unsigned head, reaped = 0; |
ab85494f | 561 | int last_idx = -1, stat_nr = 0; |
c9fb4c5b | 562 | |
c3e2fc25 | 563 | head = *ring->head; |
c9fb4c5b | 564 | do { |
701d1277 JA |
565 | struct file *f; |
566 | ||
679d8352 | 567 | read_barrier(); |
fc2dc21b | 568 | if (head == atomic_load_acquire(ring->tail)) |
c9fb4c5b | 569 | break; |
f0403f94 | 570 | cqe = &ring->cqes[head & cq_ring_mask]; |
8025517d | 571 | if (!do_nop) { |
932131c9 JA |
572 | int fileno = cqe->user_data & 0xffffffff; |
573 | ||
574 | f = &s->files[fileno]; | |
8025517d | 575 | f->pending_ios--; |
5bd526f2 | 576 | if (cqe->res != bs) { |
8025517d | 577 | printf("io: unexpected ret=%d\n", cqe->res); |
154a9582 | 578 | if (polled && cqe->res == -EOPNOTSUPP) |
8066f6b6 | 579 | printf("Your filesystem/driver/kernel doesn't support polled IO\n"); |
8025517d JA |
580 | return -1; |
581 | } | |
c9fb4c5b | 582 | } |
932131c9 JA |
583 | if (stats) { |
584 | int clock_index = cqe->user_data >> 32; | |
585 | ||
ab85494f JA |
586 | if (last_idx != clock_index) { |
587 | if (last_idx != -1) { | |
588 | add_stat(s, last_idx, stat_nr); | |
589 | stat_nr = 0; | |
590 | } | |
591 | last_idx = clock_index; | |
d4af2ece JA |
592 | } |
593 | stat_nr++; | |
932131c9 | 594 | } |
c9fb4c5b JA |
595 | reaped++; |
596 | head++; | |
c9fb4c5b JA |
597 | } while (1); |
598 | ||
ab85494f JA |
599 | if (stat_nr) |
600 | add_stat(s, last_idx, stat_nr); | |
601 | ||
fc2dc21b JA |
602 | if (reaped) { |
603 | s->inflight -= reaped; | |
604 | atomic_store_release(ring->head, head); | |
605 | } | |
c9fb4c5b JA |
606 | return reaped; |
607 | } | |
608 | ||
256714ea | 609 | static int submitter_init(struct submitter *s) |
c9fb4c5b | 610 | { |
256714ea | 611 | int i, nr_batch; |
c9fb4c5b | 612 | |
932131c9 | 613 | s->tid = gettid(); |
7e847fd0 | 614 | printf("submitter=%d, tid=%d\n", s->index, s->tid); |
c9fb4c5b | 615 | |
9eff5320 | 616 | __init_rand64(&s->rand_state, pthread_self()); |
5e8865c0 | 617 | srand48(pthread_self()); |
c9fb4c5b | 618 | |
932131c9 JA |
619 | for (i = 0; i < MAX_FDS; i++) |
620 | s->files[i].fileno = i; | |
621 | ||
622 | if (stats) { | |
623 | nr_batch = roundup_pow2(depth / batch_submit); | |
d4af2ece JA |
624 | if (nr_batch < 2) |
625 | nr_batch = 2; | |
932131c9 | 626 | s->clock_batch = calloc(nr_batch, sizeof(unsigned long)); |
52479d8b | 627 | s->clock_index = 1; |
932131c9 JA |
628 | |
629 | s->plat = calloc(PLAT_NR, sizeof(unsigned long)); | |
630 | } else { | |
631 | s->clock_batch = NULL; | |
632 | s->plat = NULL; | |
633 | nr_batch = 0; | |
634 | } | |
635 | ||
256714ea JA |
636 | return nr_batch; |
637 | } | |
638 | ||
639 | #ifdef CONFIG_LIBAIO | |
640 | static int prep_more_ios_aio(struct submitter *s, int max_ios, struct iocb *iocbs) | |
641 | { | |
8310c570 VF |
642 | uint64_t data; |
643 | long long offset; | |
256714ea JA |
644 | struct file *f; |
645 | unsigned index; | |
646 | long r; | |
647 | ||
648 | index = 0; | |
649 | while (index < max_ios) { | |
650 | struct iocb *iocb = &iocbs[index]; | |
651 | ||
652 | if (s->nr_files == 1) { | |
653 | f = &s->files[0]; | |
654 | } else { | |
655 | f = &s->files[s->cur_file]; | |
656 | if (f->pending_ios >= file_depth(s)) { | |
657 | s->cur_file++; | |
658 | if (s->cur_file == s->nr_files) | |
659 | s->cur_file = 0; | |
660 | f = &s->files[s->cur_file]; | |
661 | } | |
662 | } | |
663 | f->pending_ios++; | |
664 | ||
665 | r = lrand48(); | |
666 | offset = (r % (f->max_blocks - 1)) * bs; | |
667 | io_prep_pread(iocb, f->real_fd, s->iovecs[index].iov_base, | |
668 | s->iovecs[index].iov_len, offset); | |
669 | ||
670 | data = f->fileno; | |
52479d8b | 671 | if (stats && stats_running) |
8310c570 | 672 | data |= (((uint64_t) s->clock_index) << 32); |
256714ea JA |
673 | iocb->data = (void *) (uintptr_t) data; |
674 | index++; | |
675 | } | |
676 | return index; | |
677 | } | |
678 | ||
679 | static int reap_events_aio(struct submitter *s, struct io_event *events, int evs) | |
680 | { | |
681 | int last_idx = -1, stat_nr = 0; | |
682 | int reaped = 0; | |
683 | ||
684 | while (evs) { | |
8310c570 | 685 | uint64_t data = (uintptr_t) events[reaped].data; |
256714ea JA |
686 | struct file *f = &s->files[data & 0xffffffff]; |
687 | ||
688 | f->pending_ios--; | |
689 | if (events[reaped].res != bs) { | |
690 | printf("io: unexpected ret=%ld\n", events[reaped].res); | |
691 | return -1; | |
692 | } | |
693 | if (stats) { | |
694 | int clock_index = data >> 32; | |
695 | ||
696 | if (last_idx != clock_index) { | |
697 | if (last_idx != -1) { | |
698 | add_stat(s, last_idx, stat_nr); | |
699 | stat_nr = 0; | |
700 | } | |
701 | last_idx = clock_index; | |
d4af2ece JA |
702 | } |
703 | stat_nr++; | |
256714ea JA |
704 | } |
705 | reaped++; | |
706 | evs--; | |
707 | } | |
708 | ||
709 | if (stat_nr) | |
710 | add_stat(s, last_idx, stat_nr); | |
711 | ||
712 | s->inflight -= reaped; | |
713 | s->done += reaped; | |
714 | return reaped; | |
715 | } | |
716 | ||
717 | static void *submitter_aio_fn(void *data) | |
718 | { | |
719 | struct submitter *s = data; | |
71989c1b | 720 | int i, ret, prepped; |
256714ea JA |
721 | struct iocb **iocbsptr; |
722 | struct iocb *iocbs; | |
723 | struct io_event *events; | |
71989c1b JA |
724 | #ifdef ARCH_HAVE_CPU_CLOCK |
725 | int nr_batch = submitter_init(s); | |
726 | #else | |
727 | submitter_init(s); | |
728 | #endif | |
256714ea JA |
729 | |
730 | iocbsptr = calloc(depth, sizeof(struct iocb *)); | |
731 | iocbs = calloc(depth, sizeof(struct iocb)); | |
732 | events = calloc(depth, sizeof(struct io_event)); | |
733 | ||
734 | for (i = 0; i < depth; i++) | |
735 | iocbsptr[i] = &iocbs[i]; | |
736 | ||
737 | prepped = 0; | |
738 | do { | |
739 | int to_wait, to_submit, to_prep; | |
740 | ||
741 | if (!prepped && s->inflight < depth) { | |
742 | to_prep = min(depth - s->inflight, batch_submit); | |
743 | prepped = prep_more_ios_aio(s, to_prep, iocbs); | |
744 | #ifdef ARCH_HAVE_CPU_CLOCK | |
745 | if (prepped && stats) { | |
746 | s->clock_batch[s->clock_index] = get_cpu_clock(); | |
747 | s->clock_index = (s->clock_index + 1) & (nr_batch - 1); | |
748 | } | |
749 | #endif | |
750 | } | |
751 | s->inflight += prepped; | |
752 | to_submit = prepped; | |
753 | ||
754 | if (to_submit && (s->inflight + to_submit <= depth)) | |
755 | to_wait = 0; | |
756 | else | |
757 | to_wait = min(s->inflight + to_submit, batch_complete); | |
758 | ||
759 | ret = io_submit(s->aio_ctx, to_submit, iocbsptr); | |
760 | s->calls++; | |
761 | if (ret < 0) { | |
762 | perror("io_submit"); | |
763 | break; | |
764 | } else if (ret != to_submit) { | |
765 | printf("submitted %d, wanted %d\n", ret, to_submit); | |
766 | break; | |
767 | } | |
768 | prepped = 0; | |
769 | ||
24a24c12 | 770 | while (to_wait) { |
256714ea JA |
771 | int r; |
772 | ||
24a24c12 JA |
773 | s->calls++; |
774 | r = io_getevents(s->aio_ctx, to_wait, to_wait, events, NULL); | |
775 | if (r < 0) { | |
776 | perror("io_getevents"); | |
777 | break; | |
778 | } else if (r != to_wait) { | |
779 | printf("r=%d, wait=%d\n", r, to_wait); | |
780 | break; | |
781 | } | |
782 | r = reap_events_aio(s, events, r); | |
783 | s->reaps += r; | |
784 | to_wait -= r; | |
256714ea JA |
785 | } |
786 | } while (!s->finish); | |
787 | ||
788 | free(iocbsptr); | |
789 | free(iocbs); | |
790 | free(events); | |
791 | finish = 1; | |
792 | return NULL; | |
793 | } | |
794 | #endif | |
795 | ||
796 | static void *submitter_uring_fn(void *data) | |
797 | { | |
798 | struct submitter *s = data; | |
799 | struct io_sq_ring *ring = &s->sq_ring; | |
b65c1fc0 JA |
800 | int ret, prepped; |
801 | #ifdef ARCH_HAVE_CPU_CLOCK | |
802 | int nr_batch = submitter_init(s); | |
803 | #else | |
804 | submitter_init(s); | |
805 | #endif | |
256714ea | 806 | |
c9fb4c5b JA |
807 | prepped = 0; |
808 | do { | |
f310970e | 809 | int to_wait, to_submit, this_reap, to_prep; |
fc2dc21b | 810 | unsigned ring_flags = 0; |
c9fb4c5b | 811 | |
e39863e3 KB |
812 | if (!prepped && s->inflight < depth) { |
813 | to_prep = min(depth - s->inflight, batch_submit); | |
256714ea | 814 | prepped = prep_more_ios_uring(s, to_prep); |
932131c9 JA |
815 | #ifdef ARCH_HAVE_CPU_CLOCK |
816 | if (prepped && stats) { | |
817 | s->clock_batch[s->clock_index] = get_cpu_clock(); | |
818 | s->clock_index = (s->clock_index + 1) & (nr_batch - 1); | |
819 | } | |
820 | #endif | |
f310970e | 821 | } |
c9fb4c5b JA |
822 | s->inflight += prepped; |
823 | submit_more: | |
824 | to_submit = prepped; | |
825 | submit: | |
e39863e3 | 826 | if (to_submit && (s->inflight + to_submit <= depth)) |
c9fb4c5b JA |
827 | to_wait = 0; |
828 | else | |
e39863e3 | 829 | to_wait = min(s->inflight + to_submit, batch_complete); |
c9fb4c5b | 830 | |
ce1705de JA |
831 | /* |
832 | * Only need to call io_uring_enter if we're not using SQ thread | |
833 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
834 | */ | |
fc2dc21b JA |
835 | if (sq_thread_poll) |
836 | ring_flags = atomic_load_acquire(ring->flags); | |
837 | if (!sq_thread_poll || ring_flags & IORING_SQ_NEED_WAKEUP) { | |
e0abe388 JA |
838 | unsigned flags = 0; |
839 | ||
840 | if (to_wait) | |
841 | flags = IORING_ENTER_GETEVENTS; | |
fc2dc21b | 842 | if (ring_flags & IORING_SQ_NEED_WAKEUP) |
b532dd6d | 843 | flags |= IORING_ENTER_SQ_WAKEUP; |
e0abe388 | 844 | ret = io_uring_enter(s, to_submit, to_wait, flags); |
ce1705de | 845 | s->calls++; |
fc2dc21b JA |
846 | } else { |
847 | /* for SQPOLL, we submitted it all effectively */ | |
848 | ret = to_submit; | |
ce1705de | 849 | } |
c9fb4c5b | 850 | |
ce1705de JA |
851 | /* |
852 | * For non SQ thread poll, we already got the events we needed | |
853 | * through the io_uring_enter() above. For SQ thread poll, we | |
854 | * need to loop here until we find enough events. | |
855 | */ | |
856 | this_reap = 0; | |
857 | do { | |
858 | int r; | |
256714ea JA |
859 | |
860 | r = reap_events_uring(s); | |
7d1435e6 JA |
861 | if (r == -1) { |
862 | s->finish = 1; | |
ce1705de | 863 | break; |
7d1435e6 | 864 | } else if (r > 0) |
ce1705de JA |
865 | this_reap += r; |
866 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
867 | s->reaps += this_reap; |
868 | ||
869 | if (ret >= 0) { | |
870 | if (!ret) { | |
871 | to_submit = 0; | |
872 | if (s->inflight) | |
873 | goto submit; | |
874 | continue; | |
875 | } else if (ret < to_submit) { | |
876 | int diff = to_submit - ret; | |
877 | ||
878 | s->done += ret; | |
879 | prepped -= diff; | |
880 | goto submit_more; | |
881 | } | |
882 | s->done += ret; | |
883 | prepped = 0; | |
884 | continue; | |
885 | } else if (ret < 0) { | |
ac122fea | 886 | if (errno == EAGAIN) { |
c9fb4c5b JA |
887 | if (s->finish) |
888 | break; | |
889 | if (this_reap) | |
890 | goto submit; | |
c9fb4c5b JA |
891 | to_submit = 0; |
892 | goto submit; | |
893 | } | |
ac122fea | 894 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
895 | break; |
896 | } | |
897 | } while (!s->finish); | |
a7086591 | 898 | |
c9fb4c5b JA |
899 | finish = 1; |
900 | return NULL; | |
901 | } | |
902 | ||
54319661 JA |
903 | static struct submitter *get_submitter(int offset) |
904 | { | |
905 | void *ret; | |
906 | ||
907 | ret = submitter; | |
908 | if (offset) | |
909 | ret += offset * (sizeof(*submitter) + depth * sizeof(struct iovec)); | |
910 | return ret; | |
911 | } | |
912 | ||
65e1a5e8 | 913 | static void do_finish(const char *reason) |
c9fb4c5b | 914 | { |
54319661 | 915 | int j; |
65e1a5e8 | 916 | printf("Exiting on %s\n", reason); |
54319661 JA |
917 | for (j = 0; j < nthreads; j++) { |
918 | struct submitter *s = get_submitter(j); | |
919 | s->finish = 1; | |
920 | } | |
16d25711 | 921 | if (max_iops > 100000) |
18b557a0 | 922 | printf("Maximum IOPS=%luK\n", max_iops / 1000); |
16d25711 | 923 | else if (max_iops) |
18b557a0 | 924 | printf("Maximum IOPS=%lu\n", max_iops); |
c9fb4c5b JA |
925 | finish = 1; |
926 | } | |
927 | ||
65e1a5e8 EV |
928 | static void sig_int(int sig) |
929 | { | |
930 | do_finish("signal"); | |
931 | } | |
932 | ||
c9fb4c5b JA |
933 | static void arm_sig_int(void) |
934 | { | |
935 | struct sigaction act; | |
936 | ||
937 | memset(&act, 0, sizeof(act)); | |
938 | act.sa_handler = sig_int; | |
939 | act.sa_flags = SA_RESTART; | |
940 | sigaction(SIGINT, &act, NULL); | |
2cf71009 BP |
941 | |
942 | /* Windows uses SIGBREAK as a quit signal from other applications */ | |
943 | #ifdef WIN32 | |
944 | sigaction(SIGBREAK, &act, NULL); | |
945 | #endif | |
c9fb4c5b JA |
946 | } |
947 | ||
256714ea JA |
948 | static int setup_aio(struct submitter *s) |
949 | { | |
950 | #ifdef CONFIG_LIBAIO | |
951 | if (polled) { | |
952 | fprintf(stderr, "aio does not support polled IO\n"); | |
953 | polled = 0; | |
954 | } | |
955 | if (sq_thread_poll) { | |
956 | fprintf(stderr, "aio does not support SQPOLL IO\n"); | |
957 | sq_thread_poll = 0; | |
958 | } | |
959 | if (do_nop) { | |
960 | fprintf(stderr, "aio does not support polled IO\n"); | |
961 | do_nop = 0; | |
962 | } | |
963 | if (fixedbufs || register_files) { | |
964 | fprintf(stderr, "aio does not support registered files or buffers\n"); | |
965 | fixedbufs = register_files = 0; | |
966 | } | |
967 | ||
55845033 | 968 | return io_queue_init(roundup_pow2(depth), &s->aio_ctx); |
256714ea JA |
969 | #else |
970 | fprintf(stderr, "Legacy AIO not available on this system/build\n"); | |
971 | errno = EINVAL; | |
972 | return -1; | |
973 | #endif | |
974 | } | |
975 | ||
c3e2fc25 JA |
976 | static int setup_ring(struct submitter *s) |
977 | { | |
e31b8288 JA |
978 | struct io_sq_ring *sring = &s->sq_ring; |
979 | struct io_cq_ring *cring = &s->cq_ring; | |
980 | struct io_uring_params p; | |
2ea53ca3 | 981 | int ret, fd; |
c3e2fc25 | 982 | void *ptr; |
c3e2fc25 JA |
983 | |
984 | memset(&p, 0, sizeof(p)); | |
985 | ||
7d1435e6 | 986 | if (polled && !do_nop) |
0e47f11b | 987 | p.flags |= IORING_SETUP_IOPOLL; |
3d7d00a3 | 988 | if (sq_thread_poll) { |
2ea53ca3 | 989 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 990 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 991 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
992 | p.sq_thread_cpu = sq_thread_cpu; |
993 | } | |
c3e2fc25 JA |
994 | } |
995 | ||
e39863e3 | 996 | fd = io_uring_setup(depth, &p); |
c3e2fc25 JA |
997 | if (fd < 0) { |
998 | perror("io_uring_setup"); | |
999 | return 1; | |
1000 | } | |
f310970e | 1001 | s->ring_fd = fd; |
2ea53ca3 | 1002 | |
b3915995 JA |
1003 | io_uring_probe(fd); |
1004 | ||
2ea53ca3 | 1005 | if (fixedbufs) { |
15130e3f JA |
1006 | struct rlimit rlim; |
1007 | ||
1008 | rlim.rlim_cur = RLIM_INFINITY; | |
1009 | rlim.rlim_max = RLIM_INFINITY; | |
1010 | /* ignore potential error, not needed on newer kernels */ | |
1011 | setrlimit(RLIMIT_MEMLOCK, &rlim); | |
1012 | ||
2ea53ca3 JA |
1013 | ret = io_uring_register_buffers(s); |
1014 | if (ret < 0) { | |
a7abc9fb | 1015 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
1016 | return 1; |
1017 | } | |
a71ad043 JA |
1018 | |
1019 | if (dma_map) { | |
1020 | ret = io_uring_map_buffers(s); | |
1021 | if (ret < 0) { | |
1022 | perror("io_uring_map_buffers"); | |
1023 | return 1; | |
1024 | } | |
1025 | } | |
2ea53ca3 JA |
1026 | } |
1027 | ||
8c5fa755 JA |
1028 | if (register_files) { |
1029 | ret = io_uring_register_files(s); | |
1030 | if (ret < 0) { | |
1031 | perror("io_uring_register_files"); | |
1032 | return 1; | |
1033 | } | |
a7abc9fb JA |
1034 | } |
1035 | ||
e2239016 | 1036 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
1037 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
1038 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
1039 | sring->head = ptr + p.sq_off.head; |
1040 | sring->tail = ptr + p.sq_off.tail; | |
1041 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
1042 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 1043 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 1044 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
1045 | sq_ring_mask = *sring->ring_mask; |
1046 | ||
f0403f94 | 1047 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 1048 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 | 1049 | IORING_OFF_SQES); |
c3e2fc25 | 1050 | |
f0403f94 | 1051 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
1052 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
1053 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
1054 | cring->head = ptr + p.cq_off.head; |
1055 | cring->tail = ptr + p.cq_off.tail; | |
1056 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
1057 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 1058 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
1059 | cq_ring_mask = *cring->ring_mask; |
1060 | return 0; | |
1061 | } | |
1062 | ||
2e7888ef JA |
1063 | static void file_depths(char *buf) |
1064 | { | |
26976a13 | 1065 | bool prev = false; |
2e7888ef | 1066 | char *p; |
54319661 | 1067 | int i, j; |
2e7888ef | 1068 | |
ac21bfab | 1069 | buf[0] = '\0'; |
2e7888ef | 1070 | p = buf; |
54319661 JA |
1071 | for (j = 0; j < nthreads; j++) { |
1072 | struct submitter *s = get_submitter(j); | |
2e7888ef | 1073 | |
54319661 JA |
1074 | for (i = 0; i < s->nr_files; i++) { |
1075 | struct file *f = &s->files[i]; | |
1076 | ||
26976a13 JA |
1077 | if (prev) |
1078 | p += sprintf(p, " %d", f->pending_ios); | |
54319661 | 1079 | else |
4f215227 | 1080 | p += sprintf(p, "%d", f->pending_ios); |
26976a13 | 1081 | prev = true; |
54319661 | 1082 | } |
2e7888ef JA |
1083 | } |
1084 | } | |
1085 | ||
d79ff8c9 | 1086 | static void usage(char *argv, int status) |
e39863e3 | 1087 | { |
65e1a5e8 EV |
1088 | char runtime_str[16]; |
1089 | snprintf(runtime_str, sizeof(runtime_str), "%d", runtime); | |
e39863e3 | 1090 | printf("%s [options] -- [filenames]\n" |
35268e11 AJ |
1091 | " -d <int> : IO Depth, default %d\n" |
1092 | " -s <int> : Batch submit, default %d\n" | |
1093 | " -c <int> : Batch complete, default %d\n" | |
1094 | " -b <int> : Block size, default %d\n" | |
1095 | " -p <bool> : Polled IO, default %d\n" | |
1096 | " -B <bool> : Fixed buffers, default %d\n" | |
dd1f1ba0 | 1097 | " -D <bool> : DMA map fixed buffers, default %d\n" |
35268e11 | 1098 | " -F <bool> : Register files, default %d\n" |
0862f718 | 1099 | " -n <int> : Number of threads, default %d\n" |
2686fc22 | 1100 | " -O <bool> : Use O_DIRECT, default %d\n" |
4a39c524 EV |
1101 | " -N <bool> : Perform just no-op requests, default %d\n" |
1102 | " -t <bool> : Track IO latencies, default %d\n" | |
256714ea | 1103 | " -T <int> : TSC rate in HZ\n" |
beda9d8d JA |
1104 | " -r <int> : Runtime in seconds, default %s\n" |
1105 | " -R <bool> : Use random IO, default %d\n" | |
1106 | " -a <bool> : Use legacy aio, default %d\n", | |
35268e11 | 1107 | argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE, BS, polled, |
a71ad043 | 1108 | fixedbufs, dma_map, register_files, nthreads, !buffered, do_nop, |
5d3ea96a | 1109 | stats, runtime == 0 ? "unlimited" : runtime_str, random_io, aio); |
d79ff8c9 | 1110 | exit(status); |
e39863e3 KB |
1111 | } |
1112 | ||
203e4c26 JA |
1113 | static void read_tsc_rate(void) |
1114 | { | |
1115 | char buffer[32]; | |
1116 | int fd, ret; | |
1117 | ||
1118 | if (tsc_rate) | |
1119 | return; | |
1120 | ||
1121 | fd = open(TSC_RATE_FILE, O_RDONLY); | |
1122 | if (fd < 0) | |
1123 | return; | |
1124 | ||
1125 | ret = read(fd, buffer, sizeof(buffer)); | |
1126 | if (ret < 0) { | |
1127 | close(fd); | |
1128 | return; | |
1129 | } | |
1130 | ||
1131 | tsc_rate = strtoul(buffer, NULL, 10); | |
1132 | printf("Using TSC rate %luHz\n", tsc_rate); | |
1133 | close(fd); | |
1134 | } | |
1135 | ||
1136 | static void write_tsc_rate(void) | |
1137 | { | |
1138 | char buffer[32]; | |
1139 | struct stat sb; | |
1140 | int fd, ret; | |
1141 | ||
1142 | if (!stat(TSC_RATE_FILE, &sb)) | |
1143 | return; | |
1144 | ||
1145 | fd = open(TSC_RATE_FILE, O_WRONLY | O_CREAT, 0644); | |
1146 | if (fd < 0) | |
1147 | return; | |
1148 | ||
1149 | memset(buffer, 0, sizeof(buffer)); | |
1150 | sprintf(buffer, "%lu", tsc_rate); | |
1151 | ret = write(fd, buffer, strlen(buffer)); | |
1152 | if (ret < 0) | |
1153 | perror("write"); | |
1154 | close(fd); | |
1155 | } | |
1156 | ||
c9fb4c5b JA |
1157 | int main(int argc, char *argv[]) |
1158 | { | |
e39863e3 | 1159 | struct submitter *s; |
05138221 | 1160 | unsigned long done, calls, reap; |
d79ff8c9 | 1161 | int err, i, j, flags, fd, opt, threads_per_f, threads_rem = 0, nfiles; |
a0639afe | 1162 | long page_size; |
d79ff8c9 | 1163 | struct file f; |
2e7888ef | 1164 | char *fdepths; |
c3e2fc25 | 1165 | void *ret; |
c9fb4c5b | 1166 | |
0862f718 JA |
1167 | if (!do_nop && argc < 2) |
1168 | usage(argv[0], 1); | |
c9fb4c5b | 1169 | |
beda9d8d | 1170 | while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:N:O:t:T:a:r:D:R:h?")) != -1) { |
e39863e3 | 1171 | switch (opt) { |
256714ea JA |
1172 | case 'a': |
1173 | aio = !!atoi(optarg); | |
1174 | break; | |
e39863e3 KB |
1175 | case 'd': |
1176 | depth = atoi(optarg); | |
1177 | break; | |
1178 | case 's': | |
1179 | batch_submit = atoi(optarg); | |
932131c9 JA |
1180 | if (!batch_submit) |
1181 | batch_submit = 1; | |
e39863e3 KB |
1182 | break; |
1183 | case 'c': | |
1184 | batch_complete = atoi(optarg); | |
932131c9 JA |
1185 | if (!batch_complete) |
1186 | batch_complete = 1; | |
e39863e3 | 1187 | break; |
5bd526f2 JA |
1188 | case 'b': |
1189 | bs = atoi(optarg); | |
1190 | break; | |
1191 | case 'p': | |
1192 | polled = !!atoi(optarg); | |
1193 | break; | |
6a87c3b0 JA |
1194 | case 'B': |
1195 | fixedbufs = !!atoi(optarg); | |
1196 | break; | |
1197 | case 'F': | |
1198 | register_files = !!atoi(optarg); | |
1199 | break; | |
54319661 JA |
1200 | case 'n': |
1201 | nthreads = atoi(optarg); | |
caf2b9ac JA |
1202 | if (!nthreads) { |
1203 | printf("Threads must be non-zero\n"); | |
1204 | usage(argv[0], 1); | |
1205 | } | |
54319661 | 1206 | break; |
0862f718 JA |
1207 | case 'N': |
1208 | do_nop = !!atoi(optarg); | |
1209 | break; | |
2686fc22 JA |
1210 | case 'O': |
1211 | buffered = !atoi(optarg); | |
1212 | break; | |
932131c9 JA |
1213 | case 't': |
1214 | #ifndef ARCH_HAVE_CPU_CLOCK | |
1215 | fprintf(stderr, "Stats not supported on this CPU\n"); | |
1216 | return 1; | |
1217 | #endif | |
1218 | stats = !!atoi(optarg); | |
1219 | break; | |
1220 | case 'T': | |
1221 | #ifndef ARCH_HAVE_CPU_CLOCK | |
1222 | fprintf(stderr, "Stats not supported on this CPU\n"); | |
1223 | return 1; | |
1224 | #endif | |
1225 | tsc_rate = strtoul(optarg, NULL, 10); | |
203e4c26 | 1226 | write_tsc_rate(); |
932131c9 | 1227 | break; |
65e1a5e8 EV |
1228 | case 'r': |
1229 | runtime = atoi(optarg); | |
1230 | break; | |
a71ad043 JA |
1231 | case 'D': |
1232 | dma_map = !!atoi(optarg); | |
1233 | break; | |
beda9d8d JA |
1234 | case 'R': |
1235 | random_io = !!atoi(optarg); | |
1236 | break; | |
e39863e3 KB |
1237 | case 'h': |
1238 | case '?': | |
1239 | default: | |
d79ff8c9 | 1240 | usage(argv[0], 0); |
e39863e3 KB |
1241 | break; |
1242 | } | |
1243 | } | |
1244 | ||
203e4c26 JA |
1245 | if (stats) |
1246 | read_tsc_rate(); | |
1247 | ||
c5347611 JA |
1248 | if (batch_complete > depth) |
1249 | batch_complete = depth; | |
1250 | if (batch_submit > depth) | |
1251 | batch_submit = depth; | |
a71ad043 JA |
1252 | if (!fixedbufs && dma_map) |
1253 | dma_map = 0; | |
c5347611 | 1254 | |
54319661 | 1255 | submitter = calloc(nthreads, sizeof(*submitter) + |
55845033 | 1256 | roundup_pow2(depth) * sizeof(struct iovec)); |
54319661 JA |
1257 | for (j = 0; j < nthreads; j++) { |
1258 | s = get_submitter(j); | |
1259 | s->index = j; | |
1260 | s->done = s->calls = s->reaps = 0; | |
1261 | } | |
e39863e3 | 1262 | |
701d1277 | 1263 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
1264 | if (!buffered) |
1265 | flags |= O_DIRECT; | |
1266 | ||
54319661 | 1267 | j = 0; |
e39863e3 | 1268 | i = optind; |
d79ff8c9 | 1269 | nfiles = argc - i; |
2ac00585 JA |
1270 | if (!do_nop) { |
1271 | if (!nfiles) { | |
1272 | printf("No files specified\n"); | |
1273 | usage(argv[0], 1); | |
1274 | } | |
1275 | threads_per_f = nthreads / nfiles; | |
1276 | /* make sure each thread gets assigned files */ | |
1277 | if (threads_per_f == 0) { | |
1278 | threads_per_f = 1; | |
1279 | } else { | |
1280 | threads_rem = nthreads - threads_per_f * nfiles; | |
1281 | } | |
d79ff8c9 | 1282 | } |
8025517d | 1283 | while (!do_nop && i < argc) { |
d79ff8c9 AJ |
1284 | int k, limit; |
1285 | ||
1286 | memset(&f, 0, sizeof(f)); | |
a7086591 JA |
1287 | |
1288 | fd = open(argv[i], flags); | |
1289 | if (fd < 0) { | |
1290 | perror("open"); | |
1291 | return 1; | |
1292 | } | |
d79ff8c9 AJ |
1293 | f.real_fd = fd; |
1294 | if (get_file_size(&f)) { | |
a7086591 JA |
1295 | printf("failed getting size of device/file\n"); |
1296 | return 1; | |
1297 | } | |
d79ff8c9 | 1298 | if (f.max_blocks <= 1) { |
a7086591 JA |
1299 | printf("Zero file/device size?\n"); |
1300 | return 1; | |
1301 | } | |
d79ff8c9 AJ |
1302 | f.max_blocks--; |
1303 | ||
1304 | limit = threads_per_f; | |
1305 | limit += threads_rem > 0 ? 1 : 0; | |
1306 | for (k = 0; k < limit; k++) { | |
1307 | s = get_submitter((j + k) % nthreads); | |
a7086591 | 1308 | |
d79ff8c9 AJ |
1309 | if (s->nr_files == MAX_FDS) { |
1310 | printf("Max number of files (%d) reached\n", MAX_FDS); | |
1311 | break; | |
1312 | } | |
1313 | ||
1314 | memcpy(&s->files[s->nr_files], &f, sizeof(f)); | |
1315 | ||
1316 | printf("Added file %s (submitter %d)\n", argv[i], s->index); | |
1317 | s->nr_files++; | |
1318 | } | |
1319 | threads_rem--; | |
a7086591 | 1320 | i++; |
d79ff8c9 | 1321 | j += limit; |
a7086591 JA |
1322 | } |
1323 | ||
c9fb4c5b JA |
1324 | arm_sig_int(); |
1325 | ||
a0639afe JA |
1326 | page_size = sysconf(_SC_PAGESIZE); |
1327 | if (page_size < 0) | |
1328 | page_size = 4096; | |
1329 | ||
54319661 JA |
1330 | for (j = 0; j < nthreads; j++) { |
1331 | s = get_submitter(j); | |
55845033 | 1332 | for (i = 0; i < roundup_pow2(depth); i++) { |
54319661 | 1333 | void *buf; |
c9fb4c5b | 1334 | |
a0639afe | 1335 | if (posix_memalign(&buf, page_size, bs)) { |
54319661 JA |
1336 | printf("failed alloc\n"); |
1337 | return 1; | |
1338 | } | |
1339 | s->iovecs[i].iov_base = buf; | |
1340 | s->iovecs[i].iov_len = bs; | |
c9fb4c5b | 1341 | } |
c9fb4c5b JA |
1342 | } |
1343 | ||
54319661 JA |
1344 | for (j = 0; j < nthreads; j++) { |
1345 | s = get_submitter(j); | |
1346 | ||
256714ea JA |
1347 | if (!aio) |
1348 | err = setup_ring(s); | |
1349 | else | |
1350 | err = setup_aio(s); | |
54319661 JA |
1351 | if (err) { |
1352 | printf("ring setup failed: %s, %d\n", strerror(errno), err); | |
1353 | return 1; | |
1354 | } | |
c9fb4c5b | 1355 | } |
54319661 | 1356 | s = get_submitter(0); |
a71ad043 | 1357 | printf("polled=%d, fixedbufs=%d/%d, register_files=%d, buffered=%d, QD=%d\n", polled, fixedbufs, dma_map, register_files, buffered, depth); |
256714ea JA |
1358 | if (!aio) |
1359 | printf("Engine=io_uring, sq_ring=%d, cq_ring=%d\n", *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); | |
256714ea | 1360 | else |
09ee86fa | 1361 | printf("Engine=aio\n"); |
c9fb4c5b | 1362 | |
54319661 JA |
1363 | for (j = 0; j < nthreads; j++) { |
1364 | s = get_submitter(j); | |
256714ea JA |
1365 | if (!aio) |
1366 | pthread_create(&s->thread, NULL, submitter_uring_fn, s); | |
1367 | #ifdef CONFIG_LIBAIO | |
1368 | else | |
1369 | pthread_create(&s->thread, NULL, submitter_aio_fn, s); | |
1370 | #endif | |
54319661 | 1371 | } |
c9fb4c5b | 1372 | |
54319661 | 1373 | fdepths = malloc(8 * s->nr_files * nthreads); |
05138221 | 1374 | reap = calls = done = 0; |
c9fb4c5b JA |
1375 | do { |
1376 | unsigned long this_done = 0; | |
1377 | unsigned long this_reap = 0; | |
1378 | unsigned long this_call = 0; | |
1379 | unsigned long rpc = 0, ipc = 0; | |
f3057d26 | 1380 | unsigned long iops, bw; |
c9fb4c5b JA |
1381 | |
1382 | sleep(1); | |
65e1a5e8 EV |
1383 | if (runtime && !--runtime) |
1384 | do_finish("timeout"); | |
a1f17100 JA |
1385 | |
1386 | /* don't print partial run, if interrupted by signal */ | |
1387 | if (finish) | |
1388 | break; | |
52479d8b JA |
1389 | |
1390 | /* one second in to the run, enable stats */ | |
1391 | if (stats) | |
1392 | stats_running = 1; | |
1393 | ||
54319661 | 1394 | for (j = 0; j < nthreads; j++) { |
7d1ce4b7 | 1395 | s = get_submitter(j); |
54319661 JA |
1396 | this_done += s->done; |
1397 | this_call += s->calls; | |
1398 | this_reap += s->reaps; | |
1399 | } | |
c9fb4c5b JA |
1400 | if (this_call - calls) { |
1401 | rpc = (this_done - done) / (this_call - calls); | |
1402 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
1403 | } else |
1404 | rpc = ipc = -1; | |
2e7888ef | 1405 | file_depths(fdepths); |
22fd3501 | 1406 | iops = this_done - done; |
f3057d26 JA |
1407 | if (bs > 1048576) |
1408 | bw = iops * (bs / 1048576); | |
1409 | else | |
1410 | bw = iops / (1048576 / bs); | |
dc10c23a JA |
1411 | if (iops > 100000) |
1412 | printf("IOPS=%luK, ", iops / 1000); | |
1413 | else | |
53b5fa1e | 1414 | printf("IOPS=%lu, ", iops); |
16d25711 | 1415 | max_iops = max(max_iops, iops); |
6c5d3a1c JA |
1416 | if (!do_nop) |
1417 | printf("BW=%luMiB/s, ", bw); | |
1418 | printf("IOS/call=%ld/%ld, inflight=(%s)\n", rpc, ipc, fdepths); | |
c9fb4c5b JA |
1419 | done = this_done; |
1420 | calls = this_call; | |
1421 | reap = this_reap; | |
1422 | } while (!finish); | |
1423 | ||
54319661 JA |
1424 | for (j = 0; j < nthreads; j++) { |
1425 | s = get_submitter(j); | |
1426 | pthread_join(s->thread, &ret); | |
1427 | close(s->ring_fd); | |
932131c9 JA |
1428 | |
1429 | if (stats) { | |
1430 | unsigned long nr; | |
1431 | ||
1432 | printf("%d: Latency percentiles:\n", s->tid); | |
1433 | for (i = 0, nr = 0; i < PLAT_NR; i++) | |
1434 | nr += s->plat[i]; | |
1435 | show_clat_percentiles(s->plat, nr, 4); | |
1436 | free(s->clock_batch); | |
1437 | free(s->plat); | |
1438 | } | |
54319661 | 1439 | } |
932131c9 | 1440 | |
2e7888ef | 1441 | free(fdepths); |
54319661 | 1442 | free(submitter); |
c9fb4c5b JA |
1443 | return 0; |
1444 | } |