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" |
e31b8288 | 25 | #include "../os/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 */ |
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 */ | |
c9fb4c5b | 96 | |
2ea53ca3 | 97 | static int io_uring_register_buffers(struct submitter *s) |
c9fb4c5b | 98 | { |
2ea53ca3 JA |
99 | struct io_uring_register_buffers reg = { |
100 | .iovecs = s->iovecs, | |
101 | .nr_iovecs = DEPTH | |
102 | }; | |
103 | ||
104 | return syscall(__NR_sys_io_uring_register, s->ring_fd, | |
105 | IORING_REGISTER_BUFFERS, ®); | |
106 | } | |
107 | ||
a7abc9fb JA |
108 | static int io_uring_register_files(struct submitter *s) |
109 | { | |
110 | struct io_uring_register_files reg; | |
48e698fa | 111 | int i; |
a7abc9fb | 112 | |
48e698fa JA |
113 | s->fds = calloc(s->nr_files, sizeof(__s32)); |
114 | for (i = 0; i < s->nr_files; i++) { | |
115 | s->fds[i] = s->files[i].real_fd; | |
116 | s->files[i].fixed_fd = i; | |
117 | } | |
118 | reg.fds = s->fds; | |
a7abc9fb JA |
119 | reg.nr_fds = s->nr_files; |
120 | ||
48e698fa | 121 | return syscall(__NR_sys_io_uring_register, s->ring_fd, |
a7abc9fb | 122 | IORING_REGISTER_FILES, ®); |
a7abc9fb JA |
123 | } |
124 | ||
2ea53ca3 JA |
125 | static int io_uring_setup(unsigned entries, struct io_uring_params *p) |
126 | { | |
127 | return syscall(__NR_sys_io_uring_setup, entries, p); | |
c9fb4c5b JA |
128 | } |
129 | ||
c3e2fc25 JA |
130 | static int io_uring_enter(struct submitter *s, unsigned int to_submit, |
131 | unsigned int min_complete, unsigned int flags) | |
c9fb4c5b | 132 | { |
f310970e JA |
133 | return syscall(__NR_sys_io_uring_enter, s->ring_fd, to_submit, |
134 | min_complete, flags); | |
c9fb4c5b JA |
135 | } |
136 | ||
137 | static int gettid(void) | |
138 | { | |
139 | return syscall(__NR_gettid); | |
140 | } | |
141 | ||
701d1277 JA |
142 | static unsigned file_depth(struct submitter *s) |
143 | { | |
144 | return (DEPTH + s->nr_files - 1) / s->nr_files; | |
145 | } | |
146 | ||
a7086591 | 147 | static void init_io(struct submitter *s, unsigned index) |
c9fb4c5b | 148 | { |
f0403f94 | 149 | struct io_uring_sqe *sqe = &s->sqes[index]; |
c9fb4c5b | 150 | unsigned long offset; |
a7086591 | 151 | struct file *f; |
c9fb4c5b JA |
152 | long r; |
153 | ||
701d1277 JA |
154 | if (s->nr_files == 1) { |
155 | f = &s->files[0]; | |
156 | } else { | |
157 | f = &s->files[s->cur_file]; | |
158 | if (f->pending_ios >= file_depth(s)) { | |
159 | s->cur_file++; | |
160 | if (s->cur_file == s->nr_files) | |
161 | s->cur_file = 0; | |
162 | } | |
163 | } | |
164 | f->pending_ios++; | |
a7086591 | 165 | |
c9fb4c5b | 166 | lrand48_r(&s->rand, &r); |
a7086591 | 167 | offset = (r % (f->max_blocks - 1)) * BS; |
c9fb4c5b | 168 | |
a7abc9fb | 169 | sqe->flags = IOSQE_FIXED_FILE; |
f0403f94 | 170 | if (fixedbufs) { |
48e698fa | 171 | sqe->opcode = IORING_OP_READ_FIXED; |
f0403f94 JA |
172 | sqe->addr = s->iovecs[index].iov_base; |
173 | sqe->len = BS; | |
2ea53ca3 | 174 | sqe->buf_index = index; |
f0403f94 | 175 | } else { |
48e698fa | 176 | sqe->opcode = IORING_OP_READV; |
f0403f94 JA |
177 | sqe->addr = &s->iovecs[index]; |
178 | sqe->len = 1; | |
2ea53ca3 | 179 | sqe->buf_index = 0; |
f0403f94 | 180 | } |
f0403f94 | 181 | sqe->ioprio = 0; |
48e698fa | 182 | sqe->fd = f->fixed_fd; |
f0403f94 | 183 | sqe->off = offset; |
48e698fa | 184 | sqe->user_data = (unsigned long) f; |
c9fb4c5b JA |
185 | } |
186 | ||
a7086591 | 187 | static int prep_more_ios(struct submitter *s, int max_ios) |
c9fb4c5b | 188 | { |
e31b8288 | 189 | struct io_sq_ring *ring = &s->sq_ring; |
e2239016 | 190 | unsigned index, tail, next_tail, prepped = 0; |
c9fb4c5b | 191 | |
c3e2fc25 | 192 | next_tail = tail = *ring->tail; |
c9fb4c5b JA |
193 | do { |
194 | next_tail++; | |
c9fb4c5b | 195 | barrier(); |
c3e2fc25 | 196 | if (next_tail == *ring->head) |
c9fb4c5b JA |
197 | break; |
198 | ||
e39c34dc | 199 | index = tail & sq_ring_mask; |
a7086591 | 200 | init_io(s, index); |
c3e2fc25 | 201 | ring->array[index] = index; |
c9fb4c5b JA |
202 | prepped++; |
203 | tail = next_tail; | |
204 | } while (prepped < max_ios); | |
205 | ||
c3e2fc25 | 206 | if (*ring->tail != tail) { |
f0403f94 | 207 | /* order tail store with writes to sqes above */ |
c9fb4c5b | 208 | barrier(); |
c3e2fc25 | 209 | *ring->tail = tail; |
c9fb4c5b JA |
210 | barrier(); |
211 | } | |
212 | return prepped; | |
213 | } | |
214 | ||
a7086591 | 215 | static int get_file_size(struct file *f) |
c9fb4c5b JA |
216 | { |
217 | struct stat st; | |
218 | ||
48e698fa | 219 | if (fstat(f->real_fd, &st) < 0) |
c9fb4c5b JA |
220 | return -1; |
221 | if (S_ISBLK(st.st_mode)) { | |
222 | unsigned long long bytes; | |
223 | ||
48e698fa | 224 | if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0) |
c9fb4c5b JA |
225 | return -1; |
226 | ||
a7086591 | 227 | f->max_blocks = bytes / BS; |
c9fb4c5b JA |
228 | return 0; |
229 | } else if (S_ISREG(st.st_mode)) { | |
a7086591 | 230 | f->max_blocks = st.st_size / BS; |
c9fb4c5b JA |
231 | return 0; |
232 | } | |
233 | ||
234 | return -1; | |
235 | } | |
236 | ||
237 | static int reap_events(struct submitter *s) | |
238 | { | |
e31b8288 | 239 | struct io_cq_ring *ring = &s->cq_ring; |
f0403f94 | 240 | struct io_uring_cqe *cqe; |
e2239016 | 241 | unsigned head, reaped = 0; |
c9fb4c5b | 242 | |
c3e2fc25 | 243 | head = *ring->head; |
c9fb4c5b | 244 | do { |
701d1277 JA |
245 | struct file *f; |
246 | ||
c9fb4c5b | 247 | barrier(); |
c3e2fc25 | 248 | if (head == *ring->tail) |
c9fb4c5b | 249 | break; |
f0403f94 | 250 | cqe = &ring->cqes[head & cq_ring_mask]; |
48e698fa | 251 | f = (struct file *) cqe->user_data; |
701d1277 | 252 | f->pending_ios--; |
f0403f94 | 253 | if (cqe->res != BS) { |
f0403f94 | 254 | printf("io: unexpected ret=%d\n", cqe->res); |
c9fb4c5b JA |
255 | return -1; |
256 | } | |
f0403f94 | 257 | if (cqe->flags & IOCQE_FLAG_CACHEHIT) |
305c06ce JA |
258 | s->cachehit++; |
259 | else | |
260 | s->cachemiss++; | |
c9fb4c5b JA |
261 | reaped++; |
262 | head++; | |
c9fb4c5b JA |
263 | } while (1); |
264 | ||
265 | s->inflight -= reaped; | |
c3e2fc25 | 266 | *ring->head = head; |
c9fb4c5b JA |
267 | barrier(); |
268 | return reaped; | |
269 | } | |
270 | ||
271 | static void *submitter_fn(void *data) | |
272 | { | |
273 | struct submitter *s = data; | |
ce1705de | 274 | struct io_sq_ring *ring = &s->sq_ring; |
a7086591 | 275 | int ret, prepped; |
c9fb4c5b JA |
276 | |
277 | printf("submitter=%d\n", gettid()); | |
278 | ||
c9fb4c5b JA |
279 | srand48_r(pthread_self(), &s->rand); |
280 | ||
281 | prepped = 0; | |
282 | do { | |
f310970e | 283 | int to_wait, to_submit, this_reap, to_prep; |
c9fb4c5b | 284 | |
f310970e JA |
285 | if (!prepped && s->inflight < DEPTH) { |
286 | to_prep = min(DEPTH - s->inflight, BATCH_SUBMIT); | |
a7086591 | 287 | prepped = prep_more_ios(s, to_prep); |
f310970e | 288 | } |
c9fb4c5b JA |
289 | s->inflight += prepped; |
290 | submit_more: | |
291 | to_submit = prepped; | |
292 | submit: | |
293 | if (s->inflight + BATCH_SUBMIT < DEPTH) | |
294 | to_wait = 0; | |
295 | else | |
296 | to_wait = min(s->inflight + to_submit, BATCH_COMPLETE); | |
297 | ||
ce1705de JA |
298 | /* |
299 | * Only need to call io_uring_enter if we're not using SQ thread | |
300 | * poll, or if IORING_SQ_NEED_WAKEUP is set. | |
301 | */ | |
302 | if (!sq_thread_poll || (*ring->flags & IORING_SQ_NEED_WAKEUP)) { | |
e0abe388 JA |
303 | unsigned flags = 0; |
304 | ||
305 | if (to_wait) | |
306 | flags = IORING_ENTER_GETEVENTS; | |
307 | ret = io_uring_enter(s, to_submit, to_wait, flags); | |
ce1705de JA |
308 | s->calls++; |
309 | } | |
c9fb4c5b | 310 | |
ce1705de JA |
311 | /* |
312 | * For non SQ thread poll, we already got the events we needed | |
313 | * through the io_uring_enter() above. For SQ thread poll, we | |
314 | * need to loop here until we find enough events. | |
315 | */ | |
316 | this_reap = 0; | |
317 | do { | |
318 | int r; | |
319 | r = reap_events(s); | |
320 | if (r == -1) | |
321 | break; | |
322 | else if (r > 0) | |
323 | this_reap += r; | |
324 | } while (sq_thread_poll && this_reap < to_wait); | |
c9fb4c5b JA |
325 | s->reaps += this_reap; |
326 | ||
327 | if (ret >= 0) { | |
328 | if (!ret) { | |
329 | to_submit = 0; | |
330 | if (s->inflight) | |
331 | goto submit; | |
332 | continue; | |
333 | } else if (ret < to_submit) { | |
334 | int diff = to_submit - ret; | |
335 | ||
336 | s->done += ret; | |
337 | prepped -= diff; | |
338 | goto submit_more; | |
339 | } | |
340 | s->done += ret; | |
341 | prepped = 0; | |
342 | continue; | |
343 | } else if (ret < 0) { | |
ac122fea | 344 | if (errno == EAGAIN) { |
c9fb4c5b JA |
345 | if (s->finish) |
346 | break; | |
347 | if (this_reap) | |
348 | goto submit; | |
c9fb4c5b JA |
349 | to_submit = 0; |
350 | goto submit; | |
351 | } | |
ac122fea | 352 | printf("io_submit: %s\n", strerror(errno)); |
c9fb4c5b JA |
353 | break; |
354 | } | |
355 | } while (!s->finish); | |
a7086591 | 356 | |
c9fb4c5b JA |
357 | finish = 1; |
358 | return NULL; | |
359 | } | |
360 | ||
361 | static void sig_int(int sig) | |
362 | { | |
363 | printf("Exiting on signal %d\n", sig); | |
364 | submitters[0].finish = 1; | |
365 | finish = 1; | |
366 | } | |
367 | ||
368 | static void arm_sig_int(void) | |
369 | { | |
370 | struct sigaction act; | |
371 | ||
372 | memset(&act, 0, sizeof(act)); | |
373 | act.sa_handler = sig_int; | |
374 | act.sa_flags = SA_RESTART; | |
375 | sigaction(SIGINT, &act, NULL); | |
376 | } | |
377 | ||
c3e2fc25 JA |
378 | static int setup_ring(struct submitter *s) |
379 | { | |
e31b8288 JA |
380 | struct io_sq_ring *sring = &s->sq_ring; |
381 | struct io_cq_ring *cring = &s->cq_ring; | |
382 | struct io_uring_params p; | |
2ea53ca3 | 383 | int ret, fd; |
c3e2fc25 | 384 | void *ptr; |
c3e2fc25 JA |
385 | |
386 | memset(&p, 0, sizeof(p)); | |
387 | ||
0e47f11b JA |
388 | if (polled) |
389 | p.flags |= IORING_SETUP_IOPOLL; | |
3d7d00a3 | 390 | if (sq_thread_poll) { |
2ea53ca3 | 391 | p.flags |= IORING_SETUP_SQPOLL; |
3ade18a3 | 392 | if (sq_thread_cpu != -1) { |
3d7d00a3 | 393 | p.flags |= IORING_SETUP_SQ_AFF; |
3ade18a3 JA |
394 | p.sq_thread_cpu = sq_thread_cpu; |
395 | } | |
c3e2fc25 JA |
396 | } |
397 | ||
2ea53ca3 | 398 | fd = io_uring_setup(DEPTH, &p); |
c3e2fc25 JA |
399 | if (fd < 0) { |
400 | perror("io_uring_setup"); | |
401 | return 1; | |
402 | } | |
f310970e | 403 | s->ring_fd = fd; |
2ea53ca3 JA |
404 | |
405 | if (fixedbufs) { | |
406 | ret = io_uring_register_buffers(s); | |
407 | if (ret < 0) { | |
a7abc9fb | 408 | perror("io_uring_register_buffers"); |
2ea53ca3 JA |
409 | return 1; |
410 | } | |
411 | } | |
412 | ||
a7abc9fb JA |
413 | ret = io_uring_register_files(s); |
414 | if (ret < 0) { | |
415 | perror("io_uring_register_files"); | |
416 | return 1; | |
417 | } | |
418 | ||
e2239016 | 419 | ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32), |
f310970e JA |
420 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
421 | IORING_OFF_SQ_RING); | |
c3e2fc25 JA |
422 | printf("sq_ring ptr = 0x%p\n", ptr); |
423 | sring->head = ptr + p.sq_off.head; | |
424 | sring->tail = ptr + p.sq_off.tail; | |
425 | sring->ring_mask = ptr + p.sq_off.ring_mask; | |
426 | sring->ring_entries = ptr + p.sq_off.ring_entries; | |
ce1705de | 427 | sring->flags = ptr + p.sq_off.flags; |
ac122fea | 428 | sring->array = ptr + p.sq_off.array; |
c3e2fc25 JA |
429 | sq_ring_mask = *sring->ring_mask; |
430 | ||
f0403f94 | 431 | s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe), |
f310970e | 432 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
f0403f94 JA |
433 | IORING_OFF_SQES); |
434 | printf("sqes ptr = 0x%p\n", s->sqes); | |
c3e2fc25 | 435 | |
f0403f94 | 436 | ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe), |
f310970e JA |
437 | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd, |
438 | IORING_OFF_CQ_RING); | |
c3e2fc25 JA |
439 | printf("cq_ring ptr = 0x%p\n", ptr); |
440 | cring->head = ptr + p.cq_off.head; | |
441 | cring->tail = ptr + p.cq_off.tail; | |
442 | cring->ring_mask = ptr + p.cq_off.ring_mask; | |
443 | cring->ring_entries = ptr + p.cq_off.ring_entries; | |
f0403f94 | 444 | cring->cqes = ptr + p.cq_off.cqes; |
c3e2fc25 JA |
445 | cq_ring_mask = *cring->ring_mask; |
446 | return 0; | |
447 | } | |
448 | ||
c9fb4c5b JA |
449 | int main(int argc, char *argv[]) |
450 | { | |
451 | struct submitter *s = &submitters[0]; | |
305c06ce | 452 | unsigned long done, calls, reap, cache_hit, cache_miss; |
a7086591 | 453 | int err, i, flags, fd; |
c9fb4c5b | 454 | struct rlimit rlim; |
c3e2fc25 | 455 | void *ret; |
c9fb4c5b JA |
456 | |
457 | if (argc < 2) { | |
458 | printf("%s: filename\n", argv[0]); | |
459 | return 1; | |
460 | } | |
461 | ||
701d1277 | 462 | flags = O_RDONLY | O_NOATIME; |
a7086591 JA |
463 | if (!buffered) |
464 | flags |= O_DIRECT; | |
465 | ||
466 | i = 1; | |
467 | while (i < argc) { | |
468 | struct file *f = &s->files[s->nr_files]; | |
469 | ||
470 | fd = open(argv[i], flags); | |
471 | if (fd < 0) { | |
472 | perror("open"); | |
473 | return 1; | |
474 | } | |
48e698fa | 475 | f->real_fd = fd; |
a7086591 JA |
476 | if (get_file_size(f)) { |
477 | printf("failed getting size of device/file\n"); | |
478 | return 1; | |
479 | } | |
480 | if (f->max_blocks <= 1) { | |
481 | printf("Zero file/device size?\n"); | |
482 | return 1; | |
483 | } | |
484 | f->max_blocks--; | |
485 | ||
486 | printf("Added file %s\n", argv[i]); | |
487 | s->nr_files++; | |
488 | i++; | |
489 | } | |
490 | ||
c9fb4c5b JA |
491 | rlim.rlim_cur = RLIM_INFINITY; |
492 | rlim.rlim_max = RLIM_INFINITY; | |
493 | if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { | |
494 | perror("setrlimit"); | |
495 | return 1; | |
496 | } | |
497 | ||
498 | arm_sig_int(); | |
499 | ||
c3e2fc25 JA |
500 | for (i = 0; i < DEPTH; i++) { |
501 | void *buf; | |
c9fb4c5b | 502 | |
c3e2fc25 | 503 | if (posix_memalign(&buf, BS, BS)) { |
c9fb4c5b JA |
504 | printf("failed alloc\n"); |
505 | return 1; | |
506 | } | |
c3e2fc25 JA |
507 | s->iovecs[i].iov_base = buf; |
508 | s->iovecs[i].iov_len = BS; | |
c9fb4c5b JA |
509 | } |
510 | ||
c3e2fc25 | 511 | err = setup_ring(s); |
c9fb4c5b | 512 | if (err) { |
c3e2fc25 | 513 | printf("ring setup failed: %s, %d\n", strerror(errno), err); |
c9fb4c5b JA |
514 | return 1; |
515 | } | |
c3e2fc25 JA |
516 | printf("polled=%d, fixedbufs=%d, buffered=%d", polled, fixedbufs, buffered); |
517 | printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", DEPTH, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries); | |
c9fb4c5b JA |
518 | |
519 | pthread_create(&s->thread, NULL, submitter_fn, s); | |
520 | ||
305c06ce | 521 | cache_hit = cache_miss = reap = calls = done = 0; |
c9fb4c5b JA |
522 | do { |
523 | unsigned long this_done = 0; | |
524 | unsigned long this_reap = 0; | |
525 | unsigned long this_call = 0; | |
305c06ce JA |
526 | unsigned long this_cache_hit = 0; |
527 | unsigned long this_cache_miss = 0; | |
c9fb4c5b | 528 | unsigned long rpc = 0, ipc = 0; |
305c06ce | 529 | double hit = 0.0; |
c9fb4c5b JA |
530 | |
531 | sleep(1); | |
532 | this_done += s->done; | |
533 | this_call += s->calls; | |
534 | this_reap += s->reaps; | |
305c06ce JA |
535 | this_cache_hit += s->cachehit; |
536 | this_cache_miss += s->cachemiss; | |
537 | if (this_cache_hit && this_cache_miss) { | |
538 | unsigned long hits, total; | |
539 | ||
540 | hits = this_cache_hit - cache_hit; | |
541 | total = hits + this_cache_miss - cache_miss; | |
542 | hit = (double) hits / (double) total; | |
543 | hit *= 100.0; | |
544 | } | |
c9fb4c5b JA |
545 | if (this_call - calls) { |
546 | rpc = (this_done - done) / (this_call - calls); | |
547 | ipc = (this_reap - reap) / (this_call - calls); | |
191561c1 JA |
548 | } else |
549 | rpc = ipc = -1; | |
550 | printf("IOPS=%lu, IOS/call=%ld/%ld, inflight=%u (head=%u tail=%u), Cachehit=%0.2f%%\n", | |
c9fb4c5b | 551 | this_done - done, rpc, ipc, s->inflight, |
c3e2fc25 | 552 | *s->cq_ring.head, *s->cq_ring.tail, hit); |
c9fb4c5b JA |
553 | done = this_done; |
554 | calls = this_call; | |
555 | reap = this_reap; | |
305c06ce JA |
556 | cache_hit = s->cachehit; |
557 | cache_miss = s->cachemiss; | |
c9fb4c5b JA |
558 | } while (!finish); |
559 | ||
560 | pthread_join(s->thread, &ret); | |
e31b8288 | 561 | close(s->ring_fd); |
c9fb4c5b JA |
562 | return 0; |
563 | } |