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 | |
2e7888ef JA |
50 | #define BATCH_SUBMIT 32 |
51 | #define BATCH_COMPLETE 32 | |
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; | |
93d1811c | 175 | f = &s->files[s->cur_file]; |
701d1277 JA |
176 | } |
177 | } | |
178 | f->pending_ios++; | |
a7086591 | 179 | |
c9fb4c5b | 180 | lrand48_r(&s->rand, &r); |
a7086591 | 181 | offset = (r % (f->max_blocks - 1)) * BS; |
c9fb4c5b | 182 | |
8c5fa755 JA |
183 | if (register_files) { |
184 | sqe->flags = IOSQE_FIXED_FILE; | |
185 | sqe->fd = f->fixed_fd; | |
186 | } else { | |
187 | sqe->flags = 0; | |
188 | sqe->fd = f->real_fd; | |
189 | } | |
f0403f94 | 190 | if (fixedbufs) { |
48e698fa | 191 | sqe->opcode = IORING_OP_READ_FIXED; |
f0403f94 JA |
192 | sqe->addr = s->iovecs[index].iov_base; |
193 | sqe->len = BS; | |
2ea53ca3 | 194 | sqe->buf_index = index; |
f0403f94 | 195 | } else { |
48e698fa | 196 | sqe->opcode = IORING_OP_READV; |
f0403f94 JA |
197 | sqe->addr = &s->iovecs[index]; |
198 | sqe->len = 1; | |
2ea53ca3 | 199 | sqe->buf_index = 0; |
f0403f94 | 200 | } |
f0403f94 | 201 | sqe->ioprio = 0; |
f0403f94 | 202 | sqe->off = offset; |
48e698fa | 203 | sqe->user_data = (unsigned long) f; |
c9fb4c5b JA |
204 | } |
205 | ||
a7086591 | 206 | static int prep_more_ios(struct submitter *s, int max_ios) |
c9fb4c5b | 207 | { |
e31b8288 | 208 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 209 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 210 | |
c3e2fc25 | 211 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
212 | do { |
213 | next_tail++; | |
c9fb4c5b | 214 | barrier(); |
c3e2fc25 | 215 | if (next_tail == *ring->head) |
c9fb4c5b JA |
216 | break; |
217 | ||
e39c34dc | 218 | index = tail & sq_ring_mask; |
a7086591 | 219 | init_io(s, index); |
c3e2fc25 | 220 | ring->array[index] = index; |
c9fb4c5b JA |
221 | prepped++; |
222 | tail = next_tail; | |
223 | } while (prepped < max_ios); | |
224 | ||
c3e2fc25 | 225 | if (*ring->tail != tail) { |
f0403f94 | 226 | /* order tail store with writes to sqes above */ |
c9fb4c5b | 227 | barrier(); |
c3e2fc25 | 228 | *ring->tail = tail; |
c9fb4c5b JA |
229 | barrier(); |
230 | } | |
231 | return prepped; | |
232 | } | |
233 | ||
a7086591 | 234 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
235 | { |
236 | struct stat st; | |
237 | ||
48e698fa | 238 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
239 | return -1; |
240 | if (S_ISBLK(st.st_mode)) { | |
241 | unsigned long long bytes; | |
242 | ||
48e698fa | 243 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
244 | return -1; |
245 | ||
a7086591 | 246 | f->max_blocks = bytes / BS; |
c9fb4c5b JA |
247 | return 0; |
248 | } else if (S_ISREG(st.st_mode)) { | |
a7086591 | 249 | f->max_blocks = st.st_size / BS; |
c9fb4c5b JA |
250 | return 0; |
251 | } | |
252 | ||
253 | return -1; | |
254 | } | |
255 | ||
256 | static int reap_events(struct submitter *s) | |
257 | { | |
e31b8288 | 258 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 259 | struct io_uring_cqe *cqe; |
e2239016 | 260 | unsigned head, reaped = 0; |
c9fb4c5b | 261 | |
c3e2fc25 | 262 | head = *ring->head; |
c9fb4c5b | 263 | do { |
701d1277 JA |
264 | struct file *f; |
265 | ||
c9fb4c5b | 266 | barrier(); |
c3e2fc25 | 267 | if (head == *ring->tail) |
c9fb4c5b | 268 | break; |
f0403f94 | 269 | cqe = &ring->cqes[head & cq_ring_mask]; |
8025517d | 270 | if (!do_nop) { |
e3466352 | 271 | f = (struct file *) (uintptr_t) cqe->user_data; |
8025517d JA |
272 | f->pending_ios--; |
273 | if (cqe->res != BS) { | |
274 | printf("io: unexpected ret=%d\n", cqe->res); | |
275 | return -1; | |
276 | } | |
c9fb4c5b | 277 | } |
f0403f94 | 278 | if (cqe->flags & IOCQE_FLAG_CACHEHIT) |
305c06ce JA |
279 | s->cachehit++; |
280 | else | |
281 | s->cachemiss++; | |
c9fb4c5b JA |
282 | reaped++; |
283 | head++; | |
c9fb4c5b JA |
284 | } while (1); |
285 | ||
286 | s->inflight -= reaped; | |
c3e2fc25 | 287 | *ring->head = head; |
c9fb4c5b JA |
288 | barrier(); |
289 | return reaped; | |
290 | } | |
291 | ||
292 | static void *submitter_fn(void *data) | |
293 | { | |
294 | struct submitter *s = data; | |
ce1705de | 295 | struct io_sq_ring *ring = &s->sq_ring; |
a7086591 | 296 | int ret, prepped; |
c9fb4c5b JA |
297 | |
298 | printf("submitter=%d\n", gettid()); | |
299 | ||
c9fb4c5b JA |
300 | srand48_r(pthread_self(), &s->rand); |
301 | ||
302 | prepped = 0; | |
303 | do { | |
f310970e | 304 | int to_wait, to_submit, this_reap, to_prep; |
c9fb4c5b | 305 | |
f310970e JA |
306 | if (!prepped && s->inflight < DEPTH) { |
307 | to_prep = min(DEPTH - s->inflight, BATCH_SUBMIT); | |
a7086591 | 308 | prepped = prep_more_ios(s, to_prep); |
f310970e | 309 | } |
c9fb4c5b JA |
310 | s->inflight += prepped; |
311 | submit_more: | |
312 | to_submit = prepped; | |
313 | submit: | |
e4db5bd9 | 314 | if (to_submit && (s->inflight + to_submit <= DEPTH)) |
c9fb4c5b JA |
315 | to_wait = 0; |
316 | else | |
317 | to_wait = min(s->inflight + to_submit, BATCH_COMPLETE); | |
318 | ||
ce1705de JA |
319 | /* |
320 | * Only need to call io_uring_enter if we're not using SQ thread | |
321 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
322 | */ | |
323 | if (!sq_thread_poll || (*ring->flags & IORING_SQ_NEED_WAKEUP)) { | |
e0abe388 JA |
324 | unsigned flags = 0; |
325 | ||
326 | if (to_wait) | |
327 | flags = IORING_ENTER_GETEVENTS; | |
328 | ret = io_uring_enter(s, to_submit, to_wait, flags); | |
ce1705de JA |
329 | s->calls++; |
330 | } | |
c9fb4c5b | 331 | |
ce1705de JA |
332 | /* |
333 | * For non SQ thread poll, we already got the events we needed | |
334 | * through the io_uring_enter() above. For SQ thread poll, we | |
335 | * need to loop here until we find enough events. | |
336 | */ | |
337 | this_reap = 0; | |
338 | do { | |
339 | int r; | |
340 | r = reap_events(s); | |
7d1435e6 JA |
341 | if (r == -1) { |
342 | s->finish = 1; | |
ce1705de | 343 | break; |
7d1435e6 | 344 | } else if (r > 0) |
ce1705de JA |
345 | this_reap += r; |
346 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
347 | s->reaps += this_reap; |
348 | ||
349 | if (ret >= 0) { | |
350 | if (!ret) { | |
351 | to_submit = 0; | |
352 | if (s->inflight) | |
353 | goto submit; | |
354 | continue; | |
355 | } else if (ret < to_submit) { | |
356 | int diff = to_submit - ret; | |
357 | ||
358 | s->done += ret; | |
359 | prepped -= diff; | |
360 | goto submit_more; | |
361 | } | |
362 | s->done += ret; | |
363 | prepped = 0; | |
364 | continue; | |
365 | } else if (ret < 0) { | |
ac122fea | 366 | if (errno == EAGAIN) { |
c9fb4c5b JA |
367 | if (s->finish) |
368 | break; | |
369 | if (this_reap) | |
370 | goto submit; | |
c9fb4c5b JA |
371 | to_submit = 0; |
372 | goto submit; | |
373 | } | |
ac122fea | 374 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
375 | break; |
376 | } | |
377 | } while (!s->finish); | |
a7086591 | 378 | |
c9fb4c5b JA |
379 | finish = 1; |
380 | return NULL; | |
381 | } | |
382 | ||
383 | static void sig_int(int sig) | |
384 | { | |
385 | printf("Exiting on signal %d\n", sig); | |
386 | submitters[0].finish = 1; | |
387 | finish = 1; | |
388 | } | |
389 | ||
390 | static void arm_sig_int(void) | |
391 | { | |
392 | struct sigaction act; | |
393 | ||
394 | memset(&act, 0, sizeof(act)); | |
395 | act.sa_handler = sig_int; | |
396 | act.sa_flags = SA_RESTART; | |
397 | sigaction(SIGINT, &act, NULL); | |
398 | } | |
399 | ||
c3e2fc25 JA |
400 | static int setup_ring(struct submitter *s) |
401 | { | |
e31b8288 JA |
402 | struct io_sq_ring *sring = &s->sq_ring; |
403 | struct io_cq_ring *cring = &s->cq_ring; | |
404 | struct io_uring_params p; | |
2ea53ca3 | 405 | int ret, fd; |
c3e2fc25 | 406 | void *ptr; |
c3e2fc25 JA |
407 | |
408 | memset(&p, 0, sizeof(p)); | |
409 | ||
7d1435e6 | 410 | if (polled && !do_nop) |
0e47f11b | 411 | p.flags |= IORING_SETUP_IOPOLL; |
3d7d00a3 | 412 | if (sq_thread_poll) { |
2ea53ca3 | 413 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 414 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 415 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
416 | p.sq_thread_cpu = sq_thread_cpu; |
417 | } | |
c3e2fc25 JA |
418 | } |
419 | ||
2ea53ca3 | 420 | fd = io_uring_setup(DEPTH, &p); |
c3e2fc25 JA |
421 | if (fd < 0) { |
422 | perror("io_uring_setup"); | |
423 | return 1; | |
424 | } | |
f310970e | 425 | s->ring_fd = fd; |
2ea53ca3 JA |
426 | |
427 | if (fixedbufs) { | |
428 | ret = io_uring_register_buffers(s); | |
429 | if (ret < 0) { | |
a7abc9fb | 430 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
431 | return 1; |
432 | } | |
433 | } | |
434 | ||
8c5fa755 JA |
435 | if (register_files) { |
436 | ret = io_uring_register_files(s); | |
437 | if (ret < 0) { | |
438 | perror("io_uring_register_files"); | |
439 | return 1; | |
440 | } | |
a7abc9fb JA |
441 | } |
442 | ||
e2239016 | 443 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
444 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
445 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
446 | printf("sq_ring ptr = 0x%p\n", ptr); |
447 | sring->head = ptr + p.sq_off.head; | |
448 | sring->tail = ptr + p.sq_off.tail; | |
449 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
450 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 451 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 452 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
453 | sq_ring_mask = *sring->ring_mask; |
454 | ||
f0403f94 | 455 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 456 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 JA |
457 | IORING_OFF_SQES); |
458 | printf("sqes ptr = 0x%p\n", s->sqes); | |
c3e2fc25 | 459 | |
f0403f94 | 460 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
461 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
462 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
463 | printf("cq_ring ptr = 0x%p\n", ptr); |
464 | cring->head = ptr + p.cq_off.head; | |
465 | cring->tail = ptr + p.cq_off.tail; | |
466 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
467 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 468 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
469 | cq_ring_mask = *cring->ring_mask; |
470 | return 0; | |
471 | } | |
472 | ||
2e7888ef JA |
473 | static void file_depths(char *buf) |
474 | { | |
475 | struct submitter *s = &submitters[0]; | |
476 | char *p; | |
477 | int i; | |
478 | ||
ac21bfab | 479 | buf[0] = '\0'; |
2e7888ef JA |
480 | p = buf; |
481 | for (i = 0; i < s->nr_files; i++) { | |
482 | struct file *f = &s->files[i]; | |
483 | ||
484 | if (i + 1 == s->nr_files) | |
485 | p += sprintf(p, "%d", f->pending_ios); | |
486 | else | |
487 | p += sprintf(p, "%d, ", f->pending_ios); | |
488 | } | |
489 | } | |
490 | ||
c9fb4c5b JA |
491 | int main(int argc, char *argv[]) |
492 | { | |
493 | struct submitter *s = &submitters[0]; | |
305c06ce | 494 | unsigned long done, calls, reap, cache_hit, cache_miss; |
a7086591 | 495 | int err, i, flags, fd; |
2e7888ef | 496 | char *fdepths; |
c3e2fc25 | 497 | void *ret; |
c9fb4c5b | 498 | |
8025517d | 499 | if (!do_nop && argc < 2) { |
c9fb4c5b JA |
500 | printf("%s: filename\n", argv[0]); |
501 | return 1; | |
502 | } | |
503 | ||
701d1277 | 504 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
505 | if (!buffered) |
506 | flags |= O_DIRECT; | |
507 | ||
508 | i = 1; | |
8025517d | 509 | while (!do_nop && i < argc) { |
a7086591 JA |
510 | struct file *f = &s->files[s->nr_files]; |
511 | ||
512 | fd = open(argv[i], flags); | |
513 | if (fd < 0) { | |
514 | perror("open"); | |
515 | return 1; | |
516 | } | |
48e698fa | 517 | f->real_fd = fd; |
a7086591 JA |
518 | if (get_file_size(f)) { |
519 | printf("failed getting size of device/file\n"); | |
520 | return 1; | |
521 | } | |
522 | if (f->max_blocks <= 1) { | |
523 | printf("Zero file/device size?\n"); | |
524 | return 1; | |
525 | } | |
526 | f->max_blocks--; | |
527 | ||
528 | printf("Added file %s\n", argv[i]); | |
529 | s->nr_files++; | |
530 | i++; | |
531 | } | |
532 | ||
b3ce355d JA |
533 | if (fixedbufs) { |
534 | struct rlimit rlim; | |
535 | ||
536 | rlim.rlim_cur = RLIM_INFINITY; | |
537 | rlim.rlim_max = RLIM_INFINITY; | |
538 | if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { | |
539 | perror("setrlimit"); | |
540 | return 1; | |
541 | } | |
c9fb4c5b JA |
542 | } |
543 | ||
544 | arm_sig_int(); | |
545 | ||
c3e2fc25 JA |
546 | for (i = 0; i < DEPTH; i++) { |
547 | void *buf; | |
c9fb4c5b | 548 | |
c3e2fc25 | 549 | if (posix_memalign(&buf, BS, BS)) { |
c9fb4c5b JA |
550 | printf("failed alloc\n"); |
551 | return 1; | |
552 | } | |
c3e2fc25 JA |
553 | s->iovecs[i].iov_base = buf; |
554 | s->iovecs[i].iov_len = BS; | |
c9fb4c5b JA |
555 | } |
556 | ||
c3e2fc25 | 557 | err = setup_ring(s); |
c9fb4c5b | 558 | if (err) { |
c3e2fc25 | 559 | printf("ring setup failed: %s, %d\n", strerror(errno), err); |
c9fb4c5b JA |
560 | return 1; |
561 | } | |
c3e2fc25 JA |
562 | printf("polled=%d, fixedbufs=%d, buffered=%d", polled, fixedbufs, buffered); |
563 | printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", DEPTH, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); | |
c9fb4c5b JA |
564 | |
565 | pthread_create(&s->thread, NULL, submitter_fn, s); | |
566 | ||
2e7888ef | 567 | fdepths = malloc(8 * s->nr_files); |
305c06ce | 568 | cache_hit = cache_miss = reap = calls = done = 0; |
c9fb4c5b JA |
569 | do { |
570 | unsigned long this_done = 0; | |
571 | unsigned long this_reap = 0; | |
572 | unsigned long this_call = 0; | |
305c06ce JA |
573 | unsigned long this_cache_hit = 0; |
574 | unsigned long this_cache_miss = 0; | |
c9fb4c5b | 575 | unsigned long rpc = 0, ipc = 0; |
305c06ce | 576 | double hit = 0.0; |
c9fb4c5b JA |
577 | |
578 | sleep(1); | |
579 | this_done += s->done; | |
580 | this_call += s->calls; | |
581 | this_reap += s->reaps; | |
305c06ce JA |
582 | this_cache_hit += s->cachehit; |
583 | this_cache_miss += s->cachemiss; | |
584 | if (this_cache_hit && this_cache_miss) { | |
585 | unsigned long hits, total; | |
586 | ||
587 | hits = this_cache_hit - cache_hit; | |
588 | total = hits + this_cache_miss - cache_miss; | |
589 | hit = (double) hits / (double) total; | |
590 | hit *= 100.0; | |
591 | } | |
c9fb4c5b JA |
592 | if (this_call - calls) { |
593 | rpc = (this_done - done) / (this_call - calls); | |
594 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
595 | } else |
596 | rpc = ipc = -1; | |
2e7888ef JA |
597 | file_depths(fdepths); |
598 | printf("IOPS=%lu, IOS/call=%ld/%ld, inflight=%u (%s), Cachehit=%0.2f%%\n", | |
c9fb4c5b | 599 | this_done - done, rpc, ipc, s->inflight, |
2e7888ef | 600 | fdepths, hit); |
c9fb4c5b JA |
601 | done = this_done; |
602 | calls = this_call; | |
603 | reap = this_reap; | |
305c06ce JA |
604 | cache_hit = s->cachehit; |
605 | cache_miss = s->cachemiss; | |
c9fb4c5b JA |
606 | } while (!finish); |
607 | ||
608 | pthread_join(s->thread, &ret); | |
e31b8288 | 609 | close(s->ring_fd); |
2e7888ef | 610 | free(fdepths); |
c9fb4c5b JA |
611 | return 0; |
612 | } |