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 barrier() __asm__ __volatile__("": : :"memory") |
c3e2fc25 | 28 | |
e31b8288 | 29 | #define min(a, b) ((a < b) ? (a) : (b)) |
c3e2fc25 | 30 | |
e31b8288 | 31 | struct io_sq_ring { |
e2239016 JA |
32 | unsigned *head; |
33 | unsigned *tail; | |
34 | unsigned *ring_mask; | |
35 | unsigned *ring_entries; | |
ce1705de | 36 | unsigned *flags; |
e2239016 | 37 | unsigned *array; |
c9fb4c5b JA |
38 | }; |
39 | ||
e31b8288 | 40 | struct io_cq_ring { |
e2239016 JA |
41 | unsigned *head; |
42 | unsigned *tail; | |
43 | unsigned *ring_mask; | |
44 | unsigned *ring_entries; | |
f0403f94 | 45 | struct io_uring_cqe *cqes; |
c9fb4c5b JA |
46 | }; |
47 | ||
701d1277 | 48 | #define DEPTH 128 |
c9fb4c5b | 49 | |
701d1277 JA |
50 | #define BATCH_SUBMIT 64 |
51 | #define BATCH_COMPLETE 64 | |
c9fb4c5b JA |
52 | |
53 | #define BS 4096 | |
54 | ||
a7086591 JA |
55 | #define MAX_FDS 16 |
56 | ||
c3e2fc25 | 57 | static unsigned sq_ring_mask, cq_ring_mask; |
e39c34dc | 58 | |
a7086591 JA |
59 | struct file { |
60 | unsigned long max_blocks; | |
701d1277 | 61 | unsigned pending_ios; |
48e698fa JA |
62 | int real_fd; |
63 | int fixed_fd; | |
a7086591 JA |
64 | }; |
65 | ||
c9fb4c5b JA |
66 | struct submitter { |
67 | pthread_t thread; | |
f310970e | 68 | int ring_fd; |
c9fb4c5b | 69 | struct drand48_data rand; |
e31b8288 | 70 | struct io_sq_ring sq_ring; |
f0403f94 | 71 | struct io_uring_sqe *sqes; |
c3e2fc25 | 72 | struct iovec iovecs[DEPTH]; |
e31b8288 | 73 | struct io_cq_ring cq_ring; |
c9fb4c5b JA |
74 | int inflight; |
75 | unsigned long reaps; | |
76 | unsigned long done; | |
77 | unsigned long calls; | |
305c06ce | 78 | unsigned long cachehit, cachemiss; |
c9fb4c5b | 79 | volatile int finish; |
701d1277 | 80 | |
48e698fa JA |
81 | __s32 *fds; |
82 | ||
a7086591 JA |
83 | struct file files[MAX_FDS]; |
84 | unsigned nr_files; | |
85 | unsigned cur_file; | |
c9fb4c5b JA |
86 | }; |
87 | ||
88 | static struct submitter submitters[1]; | |
89 | static volatile int finish; | |
90 | ||
f0403f94 | 91 | static int polled = 1; /* use IO polling */ |
701d1277 | 92 | static int fixedbufs = 1; /* use fixed user buffers */ |
8c5fa755 | 93 | static int register_files = 1; /* use fixed files */ |
f0403f94 | 94 | static int buffered = 0; /* use buffered IO, not O_DIRECT */ |
3d7d00a3 JA |
95 | static int sq_thread_poll = 0; /* use kernel submission/poller thread */ |
96 | static int sq_thread_cpu = -1; /* pin above thread to this CPU */ | |
8025517d | 97 | static int do_nop = 0; /* no-op SQ ring commands */ |
c9fb4c5b | 98 | |
2ea53ca3 | 99 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 100 | { |
2ea53ca3 JA |
101 | struct io_uring_register_buffers reg = { |
102 | .iovecs = s->iovecs, | |
103 | .nr_iovecs = DEPTH | |
104 | }; | |
105 | ||
8025517d JA |
106 | if (do_nop) |
107 | return 0; | |
108 | ||
2ea53ca3 JA |
109 | return syscall(__NR_sys_io_uring_register, s->ring_fd, |
110 | IORING_REGISTER_BUFFERS, ®); | |
111 | } | |
112 | ||
a7abc9fb JA |
113 | static int io_uring_register_files(struct submitter *s) |
114 | { | |
115 | struct io_uring_register_files reg; | |
48e698fa | 116 | int i; |
a7abc9fb | 117 | |
8025517d JA |
118 | if (do_nop) |
119 | return 0; | |
120 | ||
48e698fa JA |
121 | s->fds = calloc(s->nr_files, sizeof(__s32)); |
122 | for (i = 0; i < s->nr_files; i++) { | |
123 | s->fds[i] = s->files[i].real_fd; | |
124 | s->files[i].fixed_fd = i; | |
125 | } | |
126 | reg.fds = s->fds; | |
a7abc9fb JA |
127 | reg.nr_fds = s->nr_files; |
128 | ||
48e698fa | 129 | return syscall(__NR_sys_io_uring_register, s->ring_fd, |
a7abc9fb | 130 | IORING_REGISTER_FILES, ®); |
a7abc9fb JA |
131 | } |
132 | ||
2ea53ca3 JA |
133 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) |
134 | { | |
135 | return syscall(__NR_sys_io_uring_setup, entries, p); | |
c9fb4c5b JA |
136 | } |
137 | ||
c3e2fc25 JA |
138 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
139 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 140 | { |
f310970e JA |
141 | return syscall(__NR_sys_io_uring_enter, s->ring_fd, to_submit, |
142 | min_complete, flags); | |
c9fb4c5b JA |
143 | } |
144 | ||
145 | static int gettid(void) | |
146 | { | |
147 | return syscall(__NR_gettid); | |
148 | } | |
149 | ||
701d1277 JA |
150 | static unsigned file_depth(struct submitter *s) |
151 | { | |
152 | return (DEPTH + s->nr_files - 1) / s->nr_files; | |
153 | } | |
154 | ||
a7086591 | 155 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 156 | { |
f0403f94 | 157 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 158 | unsigned long offset; |
a7086591 | 159 | struct file *f; |
c9fb4c5b JA |
160 | long r; |
161 | ||
8025517d JA |
162 | if (do_nop) { |
163 | sqe->opcode = IORING_OP_NOP; | |
164 | return; | |
165 | } | |
166 | ||
701d1277 JA |
167 | if (s->nr_files == 1) { |
168 | f = &s->files[0]; | |
169 | } else { | |
170 | f = &s->files[s->cur_file]; | |
171 | if (f->pending_ios >= file_depth(s)) { | |
172 | s->cur_file++; | |
173 | if (s->cur_file == s->nr_files) | |
174 | s->cur_file = 0; | |
175 | } | |
176 | } | |
177 | f->pending_ios++; | |
a7086591 | 178 | |
c9fb4c5b | 179 | lrand48_r(&s->rand, &r); |
a7086591 | 180 | offset = (r % (f->max_blocks - 1)) * BS; |
c9fb4c5b | 181 | |
8c5fa755 JA |
182 | if (register_files) { |
183 | sqe->flags = IOSQE_FIXED_FILE; | |
184 | sqe->fd = f->fixed_fd; | |
185 | } else { | |
186 | sqe->flags = 0; | |
187 | sqe->fd = f->real_fd; | |
188 | } | |
f0403f94 | 189 | if (fixedbufs) { |
48e698fa | 190 | sqe->opcode = IORING_OP_READ_FIXED; |
f0403f94 JA |
191 | sqe->addr = s->iovecs[index].iov_base; |
192 | sqe->len = BS; | |
2ea53ca3 | 193 | sqe->buf_index = index; |
f0403f94 | 194 | } else { |
48e698fa | 195 | sqe->opcode = IORING_OP_READV; |
f0403f94 JA |
196 | sqe->addr = &s->iovecs[index]; |
197 | sqe->len = 1; | |
2ea53ca3 | 198 | sqe->buf_index = 0; |
f0403f94 | 199 | } |
f0403f94 | 200 | sqe->ioprio = 0; |
f0403f94 | 201 | sqe->off = offset; |
48e698fa | 202 | sqe->user_data = (unsigned long) f; |
c9fb4c5b JA |
203 | } |
204 | ||
a7086591 | 205 | static int prep_more_ios(struct submitter *s, int max_ios) |
c9fb4c5b | 206 | { |
e31b8288 | 207 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 208 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 209 | |
c3e2fc25 | 210 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
211 | do { |
212 | next_tail++; | |
c9fb4c5b | 213 | barrier(); |
c3e2fc25 | 214 | if (next_tail == *ring->head) |
c9fb4c5b JA |
215 | break; |
216 | ||
e39c34dc | 217 | index = tail & sq_ring_mask; |
a7086591 | 218 | init_io(s, index); |
c3e2fc25 | 219 | ring->array[index] = index; |
c9fb4c5b JA |
220 | prepped++; |
221 | tail = next_tail; | |
222 | } while (prepped < max_ios); | |
223 | ||
c3e2fc25 | 224 | if (*ring->tail != tail) { |
f0403f94 | 225 | /* order tail store with writes to sqes above */ |
c9fb4c5b | 226 | barrier(); |
c3e2fc25 | 227 | *ring->tail = tail; |
c9fb4c5b JA |
228 | barrier(); |
229 | } | |
230 | return prepped; | |
231 | } | |
232 | ||
a7086591 | 233 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
234 | { |
235 | struct stat st; | |
236 | ||
48e698fa | 237 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
238 | return -1; |
239 | if (S_ISBLK(st.st_mode)) { | |
240 | unsigned long long bytes; | |
241 | ||
48e698fa | 242 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
243 | return -1; |
244 | ||
a7086591 | 245 | f->max_blocks = bytes / BS; |
c9fb4c5b JA |
246 | return 0; |
247 | } else if (S_ISREG(st.st_mode)) { | |
a7086591 | 248 | f->max_blocks = st.st_size / BS; |
c9fb4c5b JA |
249 | return 0; |
250 | } | |
251 | ||
252 | return -1; | |
253 | } | |
254 | ||
255 | static int reap_events(struct submitter *s) | |
256 | { | |
e31b8288 | 257 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 258 | struct io_uring_cqe *cqe; |
e2239016 | 259 | unsigned head, reaped = 0; |
c9fb4c5b | 260 | |
c3e2fc25 | 261 | head = *ring->head; |
c9fb4c5b | 262 | do { |
701d1277 JA |
263 | struct file *f; |
264 | ||
c9fb4c5b | 265 | barrier(); |
c3e2fc25 | 266 | if (head == *ring->tail) |
c9fb4c5b | 267 | break; |
f0403f94 | 268 | cqe = &ring->cqes[head & cq_ring_mask]; |
8025517d | 269 | if (!do_nop) { |
e3466352 | 270 | f = (struct file *) (uintptr_t) cqe->user_data; |
8025517d JA |
271 | f->pending_ios--; |
272 | if (cqe->res != BS) { | |
273 | printf("io: unexpected ret=%d\n", cqe->res); | |
274 | return -1; | |
275 | } | |
c9fb4c5b | 276 | } |
f0403f94 | 277 | if (cqe->flags & IOCQE_FLAG_CACHEHIT) |
305c06ce JA |
278 | s->cachehit++; |
279 | else | |
280 | s->cachemiss++; | |
c9fb4c5b JA |
281 | reaped++; |
282 | head++; | |
c9fb4c5b JA |
283 | } while (1); |
284 | ||
285 | s->inflight -= reaped; | |
c3e2fc25 | 286 | *ring->head = head; |
c9fb4c5b JA |
287 | barrier(); |
288 | return reaped; | |
289 | } | |
290 | ||
291 | static void *submitter_fn(void *data) | |
292 | { | |
293 | struct submitter *s = data; | |
ce1705de | 294 | struct io_sq_ring *ring = &s->sq_ring; |
a7086591 | 295 | int ret, prepped; |
c9fb4c5b JA |
296 | |
297 | printf("submitter=%d\n", gettid()); | |
298 | ||
c9fb4c5b JA |
299 | srand48_r(pthread_self(), &s->rand); |
300 | ||
301 | prepped = 0; | |
302 | do { | |
f310970e | 303 | int to_wait, to_submit, this_reap, to_prep; |
c9fb4c5b | 304 | |
f310970e JA |
305 | if (!prepped && s->inflight < DEPTH) { |
306 | to_prep = min(DEPTH - s->inflight, BATCH_SUBMIT); | |
a7086591 | 307 | prepped = prep_more_ios(s, to_prep); |
f310970e | 308 | } |
c9fb4c5b JA |
309 | s->inflight += prepped; |
310 | submit_more: | |
311 | to_submit = prepped; | |
312 | submit: | |
c21198d9 | 313 | if (to_submit && (s->inflight + to_submit < DEPTH)) |
c9fb4c5b JA |
314 | to_wait = 0; |
315 | else | |
316 | to_wait = min(s->inflight + to_submit, BATCH_COMPLETE); | |
317 | ||
ce1705de JA |
318 | /* |
319 | * Only need to call io_uring_enter if we're not using SQ thread | |
320 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
321 | */ | |
322 | if (!sq_thread_poll || (*ring->flags & IORING_SQ_NEED_WAKEUP)) { | |
e0abe388 JA |
323 | unsigned flags = 0; |
324 | ||
325 | if (to_wait) | |
326 | flags = IORING_ENTER_GETEVENTS; | |
327 | ret = io_uring_enter(s, to_submit, to_wait, flags); | |
ce1705de JA |
328 | s->calls++; |
329 | } | |
c9fb4c5b | 330 | |
ce1705de JA |
331 | /* |
332 | * For non SQ thread poll, we already got the events we needed | |
333 | * through the io_uring_enter() above. For SQ thread poll, we | |
334 | * need to loop here until we find enough events. | |
335 | */ | |
336 | this_reap = 0; | |
337 | do { | |
338 | int r; | |
339 | r = reap_events(s); | |
340 | if (r == -1) | |
341 | break; | |
342 | else if (r > 0) | |
343 | this_reap += r; | |
344 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
345 | s->reaps += this_reap; |
346 | ||
347 | if (ret >= 0) { | |
348 | if (!ret) { | |
349 | to_submit = 0; | |
350 | if (s->inflight) | |
351 | goto submit; | |
352 | continue; | |
353 | } else if (ret < to_submit) { | |
354 | int diff = to_submit - ret; | |
355 | ||
356 | s->done += ret; | |
357 | prepped -= diff; | |
358 | goto submit_more; | |
359 | } | |
360 | s->done += ret; | |
361 | prepped = 0; | |
362 | continue; | |
363 | } else if (ret < 0) { | |
ac122fea | 364 | if (errno == EAGAIN) { |
c9fb4c5b JA |
365 | if (s->finish) |
366 | break; | |
367 | if (this_reap) | |
368 | goto submit; | |
c9fb4c5b JA |
369 | to_submit = 0; |
370 | goto submit; | |
371 | } | |
ac122fea | 372 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
373 | break; |
374 | } | |
375 | } while (!s->finish); | |
a7086591 | 376 | |
c9fb4c5b JA |
377 | finish = 1; |
378 | return NULL; | |
379 | } | |
380 | ||
381 | static void sig_int(int sig) | |
382 | { | |
383 | printf("Exiting on signal %d\n", sig); | |
384 | submitters[0].finish = 1; | |
385 | finish = 1; | |
386 | } | |
387 | ||
388 | static void arm_sig_int(void) | |
389 | { | |
390 | struct sigaction act; | |
391 | ||
392 | memset(&act, 0, sizeof(act)); | |
393 | act.sa_handler = sig_int; | |
394 | act.sa_flags = SA_RESTART; | |
395 | sigaction(SIGINT, &act, NULL); | |
396 | } | |
397 | ||
c3e2fc25 JA |
398 | static int setup_ring(struct submitter *s) |
399 | { | |
e31b8288 JA |
400 | struct io_sq_ring *sring = &s->sq_ring; |
401 | struct io_cq_ring *cring = &s->cq_ring; | |
402 | struct io_uring_params p; | |
2ea53ca3 | 403 | int ret, fd; |
c3e2fc25 | 404 | void *ptr; |
c3e2fc25 JA |
405 | |
406 | memset(&p, 0, sizeof(p)); | |
407 | ||
0e47f11b JA |
408 | if (polled) |
409 | p.flags |= IORING_SETUP_IOPOLL; | |
3d7d00a3 | 410 | if (sq_thread_poll) { |
2ea53ca3 | 411 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 412 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 413 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
414 | p.sq_thread_cpu = sq_thread_cpu; |
415 | } | |
c3e2fc25 JA |
416 | } |
417 | ||
2ea53ca3 | 418 | fd = io_uring_setup(DEPTH, &p); |
c3e2fc25 JA |
419 | if (fd < 0) { |
420 | perror("io_uring_setup"); | |
421 | return 1; | |
422 | } | |
f310970e | 423 | s->ring_fd = fd; |
2ea53ca3 JA |
424 | |
425 | if (fixedbufs) { | |
426 | ret = io_uring_register_buffers(s); | |
427 | if (ret < 0) { | |
a7abc9fb | 428 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
429 | return 1; |
430 | } | |
431 | } | |
432 | ||
8c5fa755 JA |
433 | if (register_files) { |
434 | ret = io_uring_register_files(s); | |
435 | if (ret < 0) { | |
436 | perror("io_uring_register_files"); | |
437 | return 1; | |
438 | } | |
a7abc9fb JA |
439 | } |
440 | ||
e2239016 | 441 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
442 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
443 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
444 | printf("sq_ring ptr = 0x%p\n", ptr); |
445 | sring->head = ptr + p.sq_off.head; | |
446 | sring->tail = ptr + p.sq_off.tail; | |
447 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
448 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 449 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 450 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
451 | sq_ring_mask = *sring->ring_mask; |
452 | ||
f0403f94 | 453 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 454 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 JA |
455 | IORING_OFF_SQES); |
456 | printf("sqes ptr = 0x%p\n", s->sqes); | |
c3e2fc25 | 457 | |
f0403f94 | 458 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
459 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
460 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
461 | printf("cq_ring ptr = 0x%p\n", ptr); |
462 | cring->head = ptr + p.cq_off.head; | |
463 | cring->tail = ptr + p.cq_off.tail; | |
464 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
465 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 466 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
467 | cq_ring_mask = *cring->ring_mask; |
468 | return 0; | |
469 | } | |
470 | ||
c9fb4c5b JA |
471 | int main(int argc, char *argv[]) |
472 | { | |
473 | struct submitter *s = &submitters[0]; | |
305c06ce | 474 | unsigned long done, calls, reap, cache_hit, cache_miss; |
a7086591 | 475 | int err, i, flags, fd; |
c3e2fc25 | 476 | void *ret; |
c9fb4c5b | 477 | |
8025517d | 478 | if (!do_nop && argc < 2) { |
c9fb4c5b JA |
479 | printf("%s: filename\n", argv[0]); |
480 | return 1; | |
481 | } | |
482 | ||
701d1277 | 483 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
484 | if (!buffered) |
485 | flags |= O_DIRECT; | |
486 | ||
487 | i = 1; | |
8025517d | 488 | while (!do_nop && i < argc) { |
a7086591 JA |
489 | struct file *f = &s->files[s->nr_files]; |
490 | ||
491 | fd = open(argv[i], flags); | |
492 | if (fd < 0) { | |
493 | perror("open"); | |
494 | return 1; | |
495 | } | |
48e698fa | 496 | f->real_fd = fd; |
a7086591 JA |
497 | if (get_file_size(f)) { |
498 | printf("failed getting size of device/file\n"); | |
499 | return 1; | |
500 | } | |
501 | if (f->max_blocks <= 1) { | |
502 | printf("Zero file/device size?\n"); | |
503 | return 1; | |
504 | } | |
505 | f->max_blocks--; | |
506 | ||
507 | printf("Added file %s\n", argv[i]); | |
508 | s->nr_files++; | |
509 | i++; | |
510 | } | |
511 | ||
b3ce355d JA |
512 | if (fixedbufs) { |
513 | struct rlimit rlim; | |
514 | ||
515 | rlim.rlim_cur = RLIM_INFINITY; | |
516 | rlim.rlim_max = RLIM_INFINITY; | |
517 | if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { | |
518 | perror("setrlimit"); | |
519 | return 1; | |
520 | } | |
c9fb4c5b JA |
521 | } |
522 | ||
523 | arm_sig_int(); | |
524 | ||
c3e2fc25 JA |
525 | for (i = 0; i < DEPTH; i++) { |
526 | void *buf; | |
c9fb4c5b | 527 | |
c3e2fc25 | 528 | if (posix_memalign(&buf, BS, BS)) { |
c9fb4c5b JA |
529 | printf("failed alloc\n"); |
530 | return 1; | |
531 | } | |
c3e2fc25 JA |
532 | s->iovecs[i].iov_base = buf; |
533 | s->iovecs[i].iov_len = BS; | |
c9fb4c5b JA |
534 | } |
535 | ||
c3e2fc25 | 536 | err = setup_ring(s); |
c9fb4c5b | 537 | if (err) { |
c3e2fc25 | 538 | printf("ring setup failed: %s, %d\n", strerror(errno), err); |
c9fb4c5b JA |
539 | return 1; |
540 | } | |
c3e2fc25 JA |
541 | printf("polled=%d, fixedbufs=%d, buffered=%d", polled, fixedbufs, buffered); |
542 | printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", DEPTH, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); | |
c9fb4c5b JA |
543 | |
544 | pthread_create(&s->thread, NULL, submitter_fn, s); | |
545 | ||
305c06ce | 546 | cache_hit = cache_miss = reap = calls = done = 0; |
c9fb4c5b JA |
547 | do { |
548 | unsigned long this_done = 0; | |
549 | unsigned long this_reap = 0; | |
550 | unsigned long this_call = 0; | |
305c06ce JA |
551 | unsigned long this_cache_hit = 0; |
552 | unsigned long this_cache_miss = 0; | |
c9fb4c5b | 553 | unsigned long rpc = 0, ipc = 0; |
305c06ce | 554 | double hit = 0.0; |
c9fb4c5b JA |
555 | |
556 | sleep(1); | |
557 | this_done += s->done; | |
558 | this_call += s->calls; | |
559 | this_reap += s->reaps; | |
305c06ce JA |
560 | this_cache_hit += s->cachehit; |
561 | this_cache_miss += s->cachemiss; | |
562 | if (this_cache_hit && this_cache_miss) { | |
563 | unsigned long hits, total; | |
564 | ||
565 | hits = this_cache_hit - cache_hit; | |
566 | total = hits + this_cache_miss - cache_miss; | |
567 | hit = (double) hits / (double) total; | |
568 | hit *= 100.0; | |
569 | } | |
c9fb4c5b JA |
570 | if (this_call - calls) { |
571 | rpc = (this_done - done) / (this_call - calls); | |
572 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
573 | } else |
574 | rpc = ipc = -1; | |
575 | printf("IOPS=%lu, IOS/call=%ld/%ld, inflight=%u (head=%u tail=%u), Cachehit=%0.2f%%\n", | |
c9fb4c5b | 576 | this_done - done, rpc, ipc, s->inflight, |
c3e2fc25 | 577 | *s->cq_ring.head, *s->cq_ring.tail, hit); |
c9fb4c5b JA |
578 | done = this_done; |
579 | calls = this_call; | |
580 | reap = this_reap; | |
305c06ce JA |
581 | cache_hit = s->cachehit; |
582 | cache_miss = s->cachemiss; | |
c9fb4c5b JA |
583 | } while (!finish); |
584 | ||
585 | pthread_join(s->thread, &ret); | |
e31b8288 | 586 | close(s->ring_fd); |
c9fb4c5b JA |
587 | return 0; |
588 | } |