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> | |
8 | ||
9 | #include <sys/types.h> | |
10 | #include <sys/stat.h> | |
11 | #include <sys/ioctl.h> | |
12 | #include <sys/syscall.h> | |
13 | #include <sys/resource.h> | |
c3e2fc25 | 14 | #include <sys/mman.h> |
e31b8288 | 15 | #include <sys/uio.h> |
c9fb4c5b JA |
16 | #include <linux/fs.h> |
17 | #include <fcntl.h> | |
18 | #include <unistd.h> | |
c9fb4c5b JA |
19 | #include <string.h> |
20 | #include <pthread.h> | |
21 | #include <sched.h> | |
22 | ||
74efb029 | 23 | #include "../arch/arch.h" |
57fa61f0 | 24 | #include "../lib/types.h" |
f3e769a4 | 25 | #include "../os/linux/io_uring.h" |
ac122fea | 26 | |
e31b8288 | 27 | #define min(a, b) ((a < b) ? (a) : (b)) |
c3e2fc25 | 28 | |
e31b8288 | 29 | struct io_sq_ring { |
e2239016 JA |
30 | unsigned *head; |
31 | unsigned *tail; | |
32 | unsigned *ring_mask; | |
33 | unsigned *ring_entries; | |
ce1705de | 34 | unsigned *flags; |
e2239016 | 35 | unsigned *array; |
c9fb4c5b JA |
36 | }; |
37 | ||
e31b8288 | 38 | struct io_cq_ring { |
e2239016 JA |
39 | unsigned *head; |
40 | unsigned *tail; | |
41 | unsigned *ring_mask; | |
42 | unsigned *ring_entries; | |
f0403f94 | 43 | struct io_uring_cqe *cqes; |
c9fb4c5b JA |
44 | }; |
45 | ||
701d1277 | 46 | #define DEPTH 128 |
2e7888ef JA |
47 | #define BATCH_SUBMIT 32 |
48 | #define BATCH_COMPLETE 32 | |
c9fb4c5b JA |
49 | |
50 | #define BS 4096 | |
51 | ||
a7086591 JA |
52 | #define MAX_FDS 16 |
53 | ||
c3e2fc25 | 54 | static unsigned sq_ring_mask, cq_ring_mask; |
e39c34dc | 55 | |
a7086591 JA |
56 | struct file { |
57 | unsigned long max_blocks; | |
701d1277 | 58 | unsigned pending_ios; |
48e698fa JA |
59 | int real_fd; |
60 | int fixed_fd; | |
a7086591 JA |
61 | }; |
62 | ||
c9fb4c5b JA |
63 | struct submitter { |
64 | pthread_t thread; | |
f310970e | 65 | int ring_fd; |
c9fb4c5b | 66 | struct drand48_data rand; |
e31b8288 | 67 | struct io_sq_ring sq_ring; |
f0403f94 | 68 | struct io_uring_sqe *sqes; |
e31b8288 | 69 | struct io_cq_ring cq_ring; |
c9fb4c5b JA |
70 | int inflight; |
71 | unsigned long reaps; | |
72 | unsigned long done; | |
73 | unsigned long calls; | |
74 | volatile int finish; | |
701d1277 | 75 | |
48e698fa JA |
76 | __s32 *fds; |
77 | ||
a7086591 JA |
78 | struct file files[MAX_FDS]; |
79 | unsigned nr_files; | |
80 | unsigned cur_file; | |
e39863e3 | 81 | struct iovec iovecs[]; |
c9fb4c5b JA |
82 | }; |
83 | ||
e39863e3 | 84 | static struct submitter *submitter; |
c9fb4c5b JA |
85 | static volatile int finish; |
86 | ||
e39863e3 KB |
87 | static int depth = DEPTH; |
88 | static int batch_submit = BATCH_SUBMIT; | |
89 | static int batch_complete = BATCH_COMPLETE; | |
f0403f94 | 90 | static int polled = 1; /* use IO polling */ |
701d1277 | 91 | static int fixedbufs = 1; /* use fixed user buffers */ |
8c5fa755 | 92 | static int register_files = 1; /* use fixed files */ |
f0403f94 | 93 | static int buffered = 0; /* use buffered IO, not O_DIRECT */ |
3d7d00a3 JA |
94 | static int sq_thread_poll = 0; /* use kernel submission/poller thread */ |
95 | static int sq_thread_cpu = -1; /* pin above thread to this CPU */ | |
8025517d | 96 | static int do_nop = 0; /* no-op SQ ring commands */ |
c9fb4c5b | 97 | |
2ea53ca3 | 98 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 99 | { |
8025517d JA |
100 | if (do_nop) |
101 | return 0; | |
102 | ||
2ea53ca3 | 103 | return syscall(__NR_sys_io_uring_register, s->ring_fd, |
e39863e3 | 104 | IORING_REGISTER_BUFFERS, s->iovecs, depth); |
2ea53ca3 JA |
105 | } |
106 | ||
a7abc9fb JA |
107 | static int io_uring_register_files(struct submitter *s) |
108 | { | |
48e698fa | 109 | int i; |
a7abc9fb | 110 | |
8025517d JA |
111 | if (do_nop) |
112 | return 0; | |
113 | ||
48e698fa JA |
114 | s->fds = calloc(s->nr_files, sizeof(__s32)); |
115 | for (i = 0; i < s->nr_files; i++) { | |
116 | s->fds[i] = s->files[i].real_fd; | |
117 | s->files[i].fixed_fd = i; | |
118 | } | |
a7abc9fb | 119 | |
48e698fa | 120 | return syscall(__NR_sys_io_uring_register, s->ring_fd, |
919850d2 | 121 | IORING_REGISTER_FILES, s->fds, s->nr_files); |
a7abc9fb JA |
122 | } |
123 | ||
2ea53ca3 JA |
124 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) |
125 | { | |
126 | return syscall(__NR_sys_io_uring_setup, entries, p); | |
c9fb4c5b JA |
127 | } |
128 | ||
c3e2fc25 JA |
129 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
130 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 131 | { |
f310970e | 132 | return syscall(__NR_sys_io_uring_enter, s->ring_fd, to_submit, |
521164fa | 133 | min_complete, flags, NULL, 0); |
c9fb4c5b JA |
134 | } |
135 | ||
136 | static int gettid(void) | |
137 | { | |
138 | return syscall(__NR_gettid); | |
139 | } | |
140 | ||
701d1277 JA |
141 | static unsigned file_depth(struct submitter *s) |
142 | { | |
e39863e3 | 143 | return (depth + s->nr_files - 1) / s->nr_files; |
701d1277 JA |
144 | } |
145 | ||
a7086591 | 146 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 147 | { |
f0403f94 | 148 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 149 | unsigned long offset; |
a7086591 | 150 | struct file *f; |
c9fb4c5b JA |
151 | long r; |
152 | ||
8025517d JA |
153 | if (do_nop) { |
154 | sqe->opcode = IORING_OP_NOP; | |
155 | return; | |
156 | } | |
157 | ||
701d1277 JA |
158 | if (s->nr_files == 1) { |
159 | f = &s->files[0]; | |
160 | } else { | |
161 | f = &s->files[s->cur_file]; | |
162 | if (f->pending_ios >= file_depth(s)) { | |
163 | s->cur_file++; | |
164 | if (s->cur_file == s->nr_files) | |
165 | s->cur_file = 0; | |
93d1811c | 166 | f = &s->files[s->cur_file]; |
701d1277 JA |
167 | } |
168 | } | |
169 | f->pending_ios++; | |
a7086591 | 170 | |
c9fb4c5b | 171 | lrand48_r(&s->rand, &r); |
a7086591 | 172 | offset = (r % (f->max_blocks - 1)) * BS; |
c9fb4c5b | 173 | |
8c5fa755 JA |
174 | if (register_files) { |
175 | sqe->flags = IOSQE_FIXED_FILE; | |
176 | sqe->fd = f->fixed_fd; | |
177 | } else { | |
178 | sqe->flags = 0; | |
179 | sqe->fd = f->real_fd; | |
180 | } | |
f0403f94 | 181 | if (fixedbufs) { |
48e698fa | 182 | sqe->opcode = IORING_OP_READ_FIXED; |
919850d2 | 183 | sqe->addr = (unsigned long) s->iovecs[index].iov_base; |
f0403f94 | 184 | sqe->len = BS; |
2ea53ca3 | 185 | sqe->buf_index = index; |
f0403f94 | 186 | } else { |
48e698fa | 187 | sqe->opcode = IORING_OP_READV; |
919850d2 | 188 | sqe->addr = (unsigned long) &s->iovecs[index]; |
f0403f94 | 189 | sqe->len = 1; |
2ea53ca3 | 190 | sqe->buf_index = 0; |
f0403f94 | 191 | } |
f0403f94 | 192 | sqe->ioprio = 0; |
f0403f94 | 193 | sqe->off = offset; |
48e698fa | 194 | sqe->user_data = (unsigned long) f; |
c9fb4c5b JA |
195 | } |
196 | ||
a7086591 | 197 | static int prep_more_ios(struct submitter *s, int max_ios) |
c9fb4c5b | 198 | { |
e31b8288 | 199 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 200 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 201 | |
c3e2fc25 | 202 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
203 | do { |
204 | next_tail++; | |
679d8352 | 205 | read_barrier(); |
c3e2fc25 | 206 | if (next_tail == *ring->head) |
c9fb4c5b JA |
207 | break; |
208 | ||
e39c34dc | 209 | index = tail & sq_ring_mask; |
a7086591 | 210 | init_io(s, index); |
c3e2fc25 | 211 | ring->array[index] = index; |
c9fb4c5b JA |
212 | prepped++; |
213 | tail = next_tail; | |
214 | } while (prepped < max_ios); | |
215 | ||
c3e2fc25 | 216 | if (*ring->tail != tail) { |
f0403f94 | 217 | /* order tail store with writes to sqes above */ |
679d8352 | 218 | write_barrier(); |
c3e2fc25 | 219 | *ring->tail = tail; |
679d8352 | 220 | write_barrier(); |
c9fb4c5b JA |
221 | } |
222 | return prepped; | |
223 | } | |
224 | ||
a7086591 | 225 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
226 | { |
227 | struct stat st; | |
228 | ||
48e698fa | 229 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
230 | return -1; |
231 | if (S_ISBLK(st.st_mode)) { | |
232 | unsigned long long bytes; | |
233 | ||
48e698fa | 234 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
235 | return -1; |
236 | ||
a7086591 | 237 | f->max_blocks = bytes / BS; |
c9fb4c5b JA |
238 | return 0; |
239 | } else if (S_ISREG(st.st_mode)) { | |
a7086591 | 240 | f->max_blocks = st.st_size / BS; |
c9fb4c5b JA |
241 | return 0; |
242 | } | |
243 | ||
244 | return -1; | |
245 | } | |
246 | ||
247 | static int reap_events(struct submitter *s) | |
248 | { | |
e31b8288 | 249 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 250 | struct io_uring_cqe *cqe; |
e2239016 | 251 | unsigned head, reaped = 0; |
c9fb4c5b | 252 | |
c3e2fc25 | 253 | head = *ring->head; |
c9fb4c5b | 254 | do { |
701d1277 JA |
255 | struct file *f; |
256 | ||
679d8352 | 257 | read_barrier(); |
c3e2fc25 | 258 | if (head == *ring->tail) |
c9fb4c5b | 259 | break; |
f0403f94 | 260 | cqe = &ring->cqes[head & cq_ring_mask]; |
8025517d | 261 | if (!do_nop) { |
e3466352 | 262 | f = (struct file *) (uintptr_t) cqe->user_data; |
8025517d JA |
263 | f->pending_ios--; |
264 | if (cqe->res != BS) { | |
265 | printf("io: unexpected ret=%d\n", cqe->res); | |
154a9582 | 266 | if (polled && cqe->res == -EOPNOTSUPP) |
2857c34b JA |
267 | printf("Your filesystem/device doesn't " |
268 | "support polled IO\n"); | |
8025517d JA |
269 | return -1; |
270 | } | |
c9fb4c5b JA |
271 | } |
272 | reaped++; | |
273 | head++; | |
c9fb4c5b JA |
274 | } while (1); |
275 | ||
276 | s->inflight -= reaped; | |
c3e2fc25 | 277 | *ring->head = head; |
679d8352 | 278 | write_barrier(); |
c9fb4c5b JA |
279 | return reaped; |
280 | } | |
281 | ||
282 | static void *submitter_fn(void *data) | |
283 | { | |
284 | struct submitter *s = data; | |
ce1705de | 285 | struct io_sq_ring *ring = &s->sq_ring; |
a7086591 | 286 | int ret, prepped; |
c9fb4c5b JA |
287 | |
288 | printf("submitter=%d\n", gettid()); | |
289 | ||
c9fb4c5b JA |
290 | srand48_r(pthread_self(), &s->rand); |
291 | ||
292 | prepped = 0; | |
293 | do { | |
f310970e | 294 | int to_wait, to_submit, this_reap, to_prep; |
c9fb4c5b | 295 | |
e39863e3 KB |
296 | if (!prepped && s->inflight < depth) { |
297 | to_prep = min(depth - s->inflight, batch_submit); | |
a7086591 | 298 | prepped = prep_more_ios(s, to_prep); |
f310970e | 299 | } |
c9fb4c5b JA |
300 | s->inflight += prepped; |
301 | submit_more: | |
302 | to_submit = prepped; | |
303 | submit: | |
e39863e3 | 304 | if (to_submit && (s->inflight + to_submit <= depth)) |
c9fb4c5b JA |
305 | to_wait = 0; |
306 | else | |
e39863e3 | 307 | to_wait = min(s->inflight + to_submit, batch_complete); |
c9fb4c5b | 308 | |
ce1705de JA |
309 | /* |
310 | * Only need to call io_uring_enter if we're not using SQ thread | |
311 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
312 | */ | |
313 | if (!sq_thread_poll || (*ring->flags & IORING_SQ_NEED_WAKEUP)) { | |
e0abe388 JA |
314 | unsigned flags = 0; |
315 | ||
316 | if (to_wait) | |
317 | flags = IORING_ENTER_GETEVENTS; | |
e2f309e6 | 318 | if ((*ring->flags & IORING_SQ_NEED_WAKEUP)) |
b532dd6d | 319 | flags |= IORING_ENTER_SQ_WAKEUP; |
e0abe388 | 320 | ret = io_uring_enter(s, to_submit, to_wait, flags); |
ce1705de JA |
321 | s->calls++; |
322 | } | |
c9fb4c5b | 323 | |
ce1705de JA |
324 | /* |
325 | * For non SQ thread poll, we already got the events we needed | |
326 | * through the io_uring_enter() above. For SQ thread poll, we | |
327 | * need to loop here until we find enough events. | |
328 | */ | |
329 | this_reap = 0; | |
330 | do { | |
331 | int r; | |
332 | r = reap_events(s); | |
7d1435e6 JA |
333 | if (r == -1) { |
334 | s->finish = 1; | |
ce1705de | 335 | break; |
7d1435e6 | 336 | } else if (r > 0) |
ce1705de JA |
337 | this_reap += r; |
338 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
339 | s->reaps += this_reap; |
340 | ||
341 | if (ret >= 0) { | |
342 | if (!ret) { | |
343 | to_submit = 0; | |
344 | if (s->inflight) | |
345 | goto submit; | |
346 | continue; | |
347 | } else if (ret < to_submit) { | |
348 | int diff = to_submit - ret; | |
349 | ||
350 | s->done += ret; | |
351 | prepped -= diff; | |
352 | goto submit_more; | |
353 | } | |
354 | s->done += ret; | |
355 | prepped = 0; | |
356 | continue; | |
357 | } else if (ret < 0) { | |
ac122fea | 358 | if (errno == EAGAIN) { |
c9fb4c5b JA |
359 | if (s->finish) |
360 | break; | |
361 | if (this_reap) | |
362 | goto submit; | |
c9fb4c5b JA |
363 | to_submit = 0; |
364 | goto submit; | |
365 | } | |
ac122fea | 366 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
367 | break; |
368 | } | |
369 | } while (!s->finish); | |
a7086591 | 370 | |
c9fb4c5b JA |
371 | finish = 1; |
372 | return NULL; | |
373 | } | |
374 | ||
375 | static void sig_int(int sig) | |
376 | { | |
377 | printf("Exiting on signal %d\n", sig); | |
e39863e3 | 378 | submitter->finish = 1; |
c9fb4c5b JA |
379 | finish = 1; |
380 | } | |
381 | ||
382 | static void arm_sig_int(void) | |
383 | { | |
384 | struct sigaction act; | |
385 | ||
386 | memset(&act, 0, sizeof(act)); | |
387 | act.sa_handler = sig_int; | |
388 | act.sa_flags = SA_RESTART; | |
389 | sigaction(SIGINT, &act, NULL); | |
390 | } | |
391 | ||
c3e2fc25 JA |
392 | static int setup_ring(struct submitter *s) |
393 | { | |
e31b8288 JA |
394 | struct io_sq_ring *sring = &s->sq_ring; |
395 | struct io_cq_ring *cring = &s->cq_ring; | |
396 | struct io_uring_params p; | |
2ea53ca3 | 397 | int ret, fd; |
c3e2fc25 | 398 | void *ptr; |
c3e2fc25 JA |
399 | |
400 | memset(&p, 0, sizeof(p)); | |
401 | ||
7d1435e6 | 402 | if (polled && !do_nop) |
0e47f11b | 403 | p.flags |= IORING_SETUP_IOPOLL; |
3d7d00a3 | 404 | if (sq_thread_poll) { |
2ea53ca3 | 405 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 406 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 407 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
408 | p.sq_thread_cpu = sq_thread_cpu; |
409 | } | |
c3e2fc25 JA |
410 | } |
411 | ||
e39863e3 | 412 | fd = io_uring_setup(depth, &p); |
c3e2fc25 JA |
413 | if (fd < 0) { |
414 | perror("io_uring_setup"); | |
415 | return 1; | |
416 | } | |
f310970e | 417 | s->ring_fd = fd; |
2ea53ca3 JA |
418 | |
419 | if (fixedbufs) { | |
420 | ret = io_uring_register_buffers(s); | |
421 | if (ret < 0) { | |
a7abc9fb | 422 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
423 | return 1; |
424 | } | |
425 | } | |
426 | ||
8c5fa755 JA |
427 | if (register_files) { |
428 | ret = io_uring_register_files(s); | |
429 | if (ret < 0) { | |
430 | perror("io_uring_register_files"); | |
431 | return 1; | |
432 | } | |
a7abc9fb JA |
433 | } |
434 | ||
e2239016 | 435 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
436 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
437 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
438 | printf("sq_ring ptr = 0x%p\n", ptr); |
439 | sring->head = ptr + p.sq_off.head; | |
440 | sring->tail = ptr + p.sq_off.tail; | |
441 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
442 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 443 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 444 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
445 | sq_ring_mask = *sring->ring_mask; |
446 | ||
f0403f94 | 447 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 448 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 JA |
449 | IORING_OFF_SQES); |
450 | printf("sqes ptr = 0x%p\n", s->sqes); | |
c3e2fc25 | 451 | |
f0403f94 | 452 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
453 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
454 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
455 | printf("cq_ring ptr = 0x%p\n", ptr); |
456 | cring->head = ptr + p.cq_off.head; | |
457 | cring->tail = ptr + p.cq_off.tail; | |
458 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
459 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 460 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
461 | cq_ring_mask = *cring->ring_mask; |
462 | return 0; | |
463 | } | |
464 | ||
2e7888ef JA |
465 | static void file_depths(char *buf) |
466 | { | |
e39863e3 | 467 | struct submitter *s = submitter; |
2e7888ef JA |
468 | char *p; |
469 | int i; | |
470 | ||
ac21bfab | 471 | buf[0] = '\0'; |
2e7888ef JA |
472 | p = buf; |
473 | for (i = 0; i < s->nr_files; i++) { | |
474 | struct file *f = &s->files[i]; | |
475 | ||
476 | if (i + 1 == s->nr_files) | |
477 | p += sprintf(p, "%d", f->pending_ios); | |
478 | else | |
479 | p += sprintf(p, "%d, ", f->pending_ios); | |
480 | } | |
481 | } | |
482 | ||
e39863e3 KB |
483 | static void usage(char *argv) |
484 | { | |
485 | printf("%s [options] -- [filenames]\n" | |
486 | " -d <int> : IO Depth, default %d\n" | |
487 | " -s <int> : Batch submit, default %d\n" | |
488 | " -c <int> : Batch complete, default %d\n", | |
489 | argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE); | |
490 | exit(0); | |
491 | } | |
492 | ||
c9fb4c5b JA |
493 | int main(int argc, char *argv[]) |
494 | { | |
e39863e3 | 495 | struct submitter *s; |
05138221 | 496 | unsigned long done, calls, reap; |
e39863e3 | 497 | int err, i, flags, fd, opt; |
2e7888ef | 498 | char *fdepths; |
c3e2fc25 | 499 | void *ret; |
c9fb4c5b | 500 | |
8025517d | 501 | if (!do_nop && argc < 2) { |
e39863e3 | 502 | printf("%s: filename [options]\n", argv[0]); |
c9fb4c5b JA |
503 | return 1; |
504 | } | |
505 | ||
e39863e3 KB |
506 | while ((opt = getopt(argc, argv, "d:s:c:h?")) != -1) { |
507 | switch (opt) { | |
508 | case 'd': | |
509 | depth = atoi(optarg); | |
510 | break; | |
511 | case 's': | |
512 | batch_submit = atoi(optarg); | |
513 | break; | |
514 | case 'c': | |
515 | batch_complete = atoi(optarg); | |
516 | break; | |
517 | case 'h': | |
518 | case '?': | |
519 | default: | |
520 | usage(argv[0]); | |
521 | break; | |
522 | } | |
523 | } | |
524 | ||
d9c50de7 KB |
525 | submitter = malloc(sizeof(*submitter) + depth * sizeof(struct iovec)); |
526 | memset(submitter, 0, sizeof(*submitter) + depth * sizeof(struct iovec)); | |
e39863e3 KB |
527 | s = submitter; |
528 | ||
701d1277 | 529 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
530 | if (!buffered) |
531 | flags |= O_DIRECT; | |
532 | ||
e39863e3 | 533 | i = optind; |
8025517d | 534 | while (!do_nop && i < argc) { |
be26a982 | 535 | struct file *f; |
a7086591 | 536 | |
be26a982 JA |
537 | if (s->nr_files == MAX_FDS) { |
538 | printf("Max number of files (%d) reached\n", MAX_FDS); | |
539 | break; | |
540 | } | |
a7086591 JA |
541 | fd = open(argv[i], flags); |
542 | if (fd < 0) { | |
543 | perror("open"); | |
544 | return 1; | |
545 | } | |
be26a982 JA |
546 | |
547 | f = &s->files[s->nr_files]; | |
48e698fa | 548 | f->real_fd = fd; |
a7086591 JA |
549 | if (get_file_size(f)) { |
550 | printf("failed getting size of device/file\n"); | |
551 | return 1; | |
552 | } | |
553 | if (f->max_blocks <= 1) { | |
554 | printf("Zero file/device size?\n"); | |
555 | return 1; | |
556 | } | |
557 | f->max_blocks--; | |
558 | ||
559 | printf("Added file %s\n", argv[i]); | |
560 | s->nr_files++; | |
561 | i++; | |
562 | } | |
563 | ||
b3ce355d JA |
564 | if (fixedbufs) { |
565 | struct rlimit rlim; | |
566 | ||
567 | rlim.rlim_cur = RLIM_INFINITY; | |
568 | rlim.rlim_max = RLIM_INFINITY; | |
569 | if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { | |
570 | perror("setrlimit"); | |
571 | return 1; | |
572 | } | |
c9fb4c5b JA |
573 | } |
574 | ||
575 | arm_sig_int(); | |
576 | ||
e39863e3 | 577 | for (i = 0; i < depth; i++) { |
c3e2fc25 | 578 | void *buf; |
c9fb4c5b | 579 | |
c3e2fc25 | 580 | if (posix_memalign(&buf, BS, BS)) { |
c9fb4c5b JA |
581 | printf("failed alloc\n"); |
582 | return 1; | |
583 | } | |
c3e2fc25 JA |
584 | s->iovecs[i].iov_base = buf; |
585 | s->iovecs[i].iov_len = BS; | |
c9fb4c5b JA |
586 | } |
587 | ||
c3e2fc25 | 588 | err = setup_ring(s); |
c9fb4c5b | 589 | if (err) { |
c3e2fc25 | 590 | printf("ring setup failed: %s, %d\n", strerror(errno), err); |
c9fb4c5b JA |
591 | return 1; |
592 | } | |
c3e2fc25 | 593 | printf("polled=%d, fixedbufs=%d, buffered=%d", polled, fixedbufs, buffered); |
e39863e3 | 594 | printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", depth, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); |
c9fb4c5b JA |
595 | |
596 | pthread_create(&s->thread, NULL, submitter_fn, s); | |
597 | ||
2e7888ef | 598 | fdepths = malloc(8 * s->nr_files); |
05138221 | 599 | reap = calls = done = 0; |
c9fb4c5b JA |
600 | do { |
601 | unsigned long this_done = 0; | |
602 | unsigned long this_reap = 0; | |
603 | unsigned long this_call = 0; | |
604 | unsigned long rpc = 0, ipc = 0; | |
605 | ||
606 | sleep(1); | |
607 | this_done += s->done; | |
608 | this_call += s->calls; | |
609 | this_reap += s->reaps; | |
610 | if (this_call - calls) { | |
611 | rpc = (this_done - done) / (this_call - calls); | |
612 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
613 | } else |
614 | rpc = ipc = -1; | |
2e7888ef | 615 | file_depths(fdepths); |
05138221 | 616 | printf("IOPS=%lu, IOS/call=%ld/%ld, inflight=%u (%s)\n", |
c9fb4c5b | 617 | this_done - done, rpc, ipc, s->inflight, |
05138221 | 618 | fdepths); |
c9fb4c5b JA |
619 | done = this_done; |
620 | calls = this_call; | |
621 | reap = this_reap; | |
622 | } while (!finish); | |
623 | ||
624 | pthread_join(s->thread, &ret); | |
e31b8288 | 625 | close(s->ring_fd); |
2e7888ef | 626 | free(fdepths); |
c9fb4c5b JA |
627 | return 0; |
628 | } |