Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdio.h> |
| 3 | #include <unistd.h> |
| 4 | #include <inttypes.h> |
| 5 | #include <assert.h> |
| 6 | |
| 7 | #include "../io_ddir.h" |
| 8 | #include "../flist.h" |
| 9 | #include "../hash.h" |
| 10 | #include "../fifo.h" |
| 11 | #include "../blktrace_api.h" |
| 12 | #include "../os/os.h" |
| 13 | #include "../log.h" |
| 14 | #include "../lib/linux-dev-lookup.h" |
| 15 | |
| 16 | #define TRACE_FIFO_SIZE 8192 |
| 17 | |
| 18 | static unsigned int rt_threshold = 1000000; |
| 19 | static unsigned int ios_threshold = 10; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 20 | static unsigned int rate_threshold; |
| 21 | static unsigned int set_rate; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 22 | static int output_ascii = 1; |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 23 | static char *filename; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 24 | |
| 25 | struct bs { |
| 26 | unsigned int bs; |
| 27 | unsigned int nr; |
| 28 | int merges; |
| 29 | }; |
| 30 | |
| 31 | struct trace_file { |
| 32 | char *name; |
| 33 | int major, minor; |
| 34 | }; |
| 35 | |
| 36 | struct btrace_out { |
| 37 | unsigned long ios[DDIR_RWDIR_CNT]; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 38 | unsigned long merges[DDIR_RWDIR_CNT]; |
| 39 | |
| 40 | uint64_t last_end[DDIR_RWDIR_CNT]; |
| 41 | uint64_t seq[DDIR_RWDIR_CNT]; |
| 42 | |
| 43 | struct bs *bs[DDIR_RWDIR_CNT]; |
| 44 | unsigned int nr_bs[DDIR_RWDIR_CNT]; |
| 45 | |
| 46 | int inflight; |
| 47 | unsigned int depth; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 48 | uint64_t first_ttime[DDIR_RWDIR_CNT]; |
| 49 | uint64_t last_ttime[DDIR_RWDIR_CNT]; |
| 50 | uint64_t kb[DDIR_RWDIR_CNT]; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 51 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 52 | uint64_t start_delay; |
| 53 | }; |
| 54 | |
| 55 | struct btrace_pid { |
| 56 | struct flist_head hash_list; |
| 57 | struct flist_head pid_list; |
| 58 | pid_t pid; |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 59 | |
| 60 | struct trace_file *files; |
| 61 | int nr_files; |
| 62 | unsigned int last_major, last_minor; |
| 63 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 64 | struct btrace_out o; |
| 65 | }; |
| 66 | |
| 67 | struct inflight { |
| 68 | struct flist_head list; |
| 69 | struct btrace_pid *p; |
| 70 | uint64_t end_sector; |
| 71 | }; |
| 72 | |
| 73 | #define PID_HASH_BITS 10 |
| 74 | #define PID_HASH_SIZE (1U << PID_HASH_BITS) |
| 75 | |
| 76 | static struct flist_head pid_hash[PID_HASH_SIZE]; |
| 77 | static FLIST_HEAD(pid_list); |
| 78 | |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 79 | #define INFLIGHT_HASH_BITS 8 |
| 80 | #define INFLIGHT_HASH_SIZE (1U << INFLIGHT_HASH_BITS) |
| 81 | static struct flist_head inflight_hash[INFLIGHT_HASH_SIZE]; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 82 | |
| 83 | static uint64_t first_ttime = -1ULL; |
| 84 | |
| 85 | static struct inflight *inflight_find(uint64_t sector) |
| 86 | { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 87 | struct flist_head *inflight_list; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 88 | struct flist_head *e; |
| 89 | |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 90 | inflight_list = &inflight_hash[hash_long(sector, INFLIGHT_HASH_BITS)]; |
| 91 | |
| 92 | flist_for_each(e, inflight_list) { |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 93 | struct inflight *i = flist_entry(e, struct inflight, list); |
| 94 | |
| 95 | if (i->end_sector == sector) |
| 96 | return i; |
| 97 | } |
| 98 | |
| 99 | return NULL; |
| 100 | } |
| 101 | |
| 102 | static void inflight_remove(struct inflight *i) |
| 103 | { |
| 104 | struct btrace_out *o = &i->p->o; |
| 105 | |
| 106 | o->inflight--; |
| 107 | assert(o->inflight >= 0); |
| 108 | flist_del(&i->list); |
| 109 | free(i); |
| 110 | } |
| 111 | |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 112 | static void __inflight_add(struct inflight *i) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 113 | { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 114 | struct flist_head *list; |
| 115 | |
| 116 | list = &inflight_hash[hash_long(i->end_sector, INFLIGHT_HASH_BITS)]; |
| 117 | flist_add_tail(&i->list, list); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | static void inflight_add(struct btrace_pid *p, uint64_t sector, uint32_t len) |
| 121 | { |
| 122 | struct btrace_out *o = &p->o; |
| 123 | struct inflight *i; |
| 124 | |
| 125 | i = calloc(1, sizeof(*i)); |
| 126 | i->p = p; |
| 127 | o->inflight++; |
| 128 | o->depth = max((int) o->depth, o->inflight); |
| 129 | i->end_sector = sector + (len >> 9); |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 130 | __inflight_add(i); |
| 131 | } |
| 132 | |
| 133 | static void inflight_merge(struct inflight *i, int rw, unsigned int size) |
| 134 | { |
| 135 | i->p->o.merges[rw]++; |
| 136 | if (size) { |
| 137 | i->end_sector += (size >> 9); |
| 138 | flist_del(&i->list); |
| 139 | __inflight_add(i); |
| 140 | } |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 141 | } |
| 142 | |
| 143 | /* |
| 144 | * fifo refill frontend, to avoid reading data in trace sized bites |
| 145 | */ |
| 146 | static int refill_fifo(struct fifo *fifo, int fd) |
| 147 | { |
| 148 | char buf[TRACE_FIFO_SIZE]; |
| 149 | unsigned int total; |
| 150 | int ret; |
| 151 | |
| 152 | total = sizeof(buf); |
| 153 | if (total > fifo_room(fifo)) |
| 154 | total = fifo_room(fifo); |
| 155 | |
| 156 | ret = read(fd, buf, total); |
| 157 | if (ret < 0) { |
| 158 | perror("read refill"); |
| 159 | return -1; |
| 160 | } |
| 161 | |
| 162 | if (ret > 0) |
| 163 | ret = fifo_put(fifo, buf, ret); |
| 164 | |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * Retrieve 'len' bytes from the fifo, refilling if necessary. |
| 170 | */ |
| 171 | static int trace_fifo_get(struct fifo *fifo, int fd, void *buf, |
| 172 | unsigned int len) |
| 173 | { |
| 174 | if (fifo_len(fifo) < len) { |
| 175 | int ret = refill_fifo(fifo, fd); |
| 176 | |
| 177 | if (ret < 0) |
| 178 | return ret; |
| 179 | } |
| 180 | |
| 181 | return fifo_get(fifo, buf, len); |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Just discard the pdu by seeking past it. |
| 186 | */ |
| 187 | static int discard_pdu(struct fifo *fifo, int fd, struct blk_io_trace *t) |
| 188 | { |
| 189 | if (t->pdu_len == 0) |
| 190 | return 0; |
| 191 | |
| 192 | return trace_fifo_get(fifo, fd, NULL, t->pdu_len); |
| 193 | } |
| 194 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 195 | static int handle_trace_notify(struct blk_io_trace *t) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 196 | { |
| 197 | switch (t->action) { |
| 198 | case BLK_TN_PROCESS: |
| 199 | //printf("got process notify: %x, %d\n", t->action, t->pid); |
| 200 | break; |
| 201 | case BLK_TN_TIMESTAMP: |
| 202 | //printf("got timestamp notify: %x, %d\n", t->action, t->pid); |
| 203 | break; |
| 204 | case BLK_TN_MESSAGE: |
| 205 | break; |
| 206 | default: |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 207 | log_err("unknown trace act %x\n", t->action); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 208 | return 1; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 209 | } |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 210 | |
| 211 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | static void __add_bs(struct btrace_out *o, unsigned int len, int rw) |
| 215 | { |
| 216 | o->bs[rw] = realloc(o->bs[rw], (o->nr_bs[rw] + 1) * sizeof(struct bs)); |
| 217 | o->bs[rw][o->nr_bs[rw]].bs = len; |
| 218 | o->bs[rw][o->nr_bs[rw]].nr = 1; |
| 219 | o->nr_bs[rw]++; |
| 220 | } |
| 221 | |
| 222 | static void add_bs(struct btrace_out *o, unsigned int len, int rw) |
| 223 | { |
| 224 | struct bs *bs = o->bs[rw]; |
| 225 | int i; |
| 226 | |
| 227 | if (!o->nr_bs[rw]) { |
| 228 | __add_bs(o, len, rw); |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | for (i = 0; i < o->nr_bs[rw]; i++) { |
| 233 | if (bs[i].bs == len) { |
| 234 | bs[i].nr++; |
| 235 | return; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | __add_bs(o, len, rw); |
| 240 | } |
| 241 | |
| 242 | #define FMINORBITS 20 |
| 243 | #define FMINORMASK ((1U << FMINORBITS) - 1) |
| 244 | #define FMAJOR(dev) ((unsigned int) ((dev) >> FMINORBITS)) |
| 245 | #define FMINOR(dev) ((unsigned int) ((dev) & FMINORMASK)) |
| 246 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 247 | static int btrace_add_file(struct btrace_pid *p, uint32_t devno) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 248 | { |
| 249 | unsigned int maj = FMAJOR(devno); |
| 250 | unsigned int min = FMINOR(devno); |
| 251 | struct trace_file *f; |
| 252 | unsigned int i; |
| 253 | char dev[256]; |
| 254 | |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 255 | if (filename) |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 256 | return 0; |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 257 | if (p->last_major == maj && p->last_minor == min) |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 258 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 259 | |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 260 | p->last_major = maj; |
| 261 | p->last_minor = min; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 262 | |
| 263 | /* |
| 264 | * check for this file in our list |
| 265 | */ |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 266 | for (i = 0; i < p->nr_files; i++) { |
| 267 | f = &p->files[i]; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 268 | |
| 269 | if (f->major == maj && f->minor == min) |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 270 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | strcpy(dev, "/dev"); |
| 274 | if (!blktrace_lookup_device(NULL, dev, maj, min)) { |
| 275 | log_err("fio: failed to find device %u/%u\n", maj, min); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 276 | if (!output_ascii) { |
| 277 | log_err("fio: use -d to specify device\n"); |
| 278 | return 1; |
| 279 | } |
| 280 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 281 | } |
| 282 | |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 283 | p->files = realloc(p->files, (p->nr_files + 1) * sizeof(*f)); |
| 284 | f = &p->files[p->nr_files]; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 285 | f->name = strdup(dev); |
| 286 | f->major = maj; |
| 287 | f->minor = min; |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 288 | p->nr_files++; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 289 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 290 | } |
| 291 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 292 | static int t_to_rwdir(struct blk_io_trace *t) |
| 293 | { |
| 294 | if (t->action & BLK_TC_ACT(BLK_TC_DISCARD)) |
| 295 | return DDIR_TRIM; |
| 296 | |
| 297 | return (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
| 298 | } |
| 299 | |
| 300 | static int handle_trace_discard(struct blk_io_trace *t, struct btrace_pid *p) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 301 | { |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 302 | struct btrace_out *o = &p->o; |
| 303 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 304 | if (btrace_add_file(p, t->device)) |
| 305 | return 1; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 306 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 307 | if (o->first_ttime[2] == -1ULL) |
| 308 | o->first_ttime[2] = t->time; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 309 | |
| 310 | o->ios[DDIR_TRIM]++; |
| 311 | add_bs(o, t->bytes, DDIR_TRIM); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 312 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 313 | } |
| 314 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 315 | static int handle_trace_fs(struct blk_io_trace *t, struct btrace_pid *p) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 316 | { |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 317 | struct btrace_out *o = &p->o; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 318 | int rw; |
| 319 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 320 | if (btrace_add_file(p, t->device)) |
| 321 | return 1; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 322 | |
| 323 | first_ttime = min(first_ttime, (uint64_t) t->time); |
| 324 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 325 | rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
| 326 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 327 | if (o->first_ttime[rw] == -1ULL) |
| 328 | o->first_ttime[rw] = t->time; |
| 329 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 330 | add_bs(o, t->bytes, rw); |
| 331 | o->ios[rw]++; |
| 332 | |
| 333 | if (t->sector == o->last_end[rw] || o->last_end[rw] == -1ULL) |
| 334 | o->seq[rw]++; |
| 335 | |
| 336 | o->last_end[rw] = t->sector + (t->bytes >> 9); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 337 | return 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 338 | } |
| 339 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 340 | static int handle_queue_trace(struct blk_io_trace *t, struct btrace_pid *p) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 341 | { |
| 342 | if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY)) |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 343 | return handle_trace_notify(t); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 344 | else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD)) |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 345 | return handle_trace_discard(t, p); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 346 | else |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 347 | return handle_trace_fs(t, p); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 348 | } |
| 349 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 350 | static int handle_trace(struct blk_io_trace *t, struct btrace_pid *p) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 351 | { |
| 352 | unsigned int act = t->action & 0xffff; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 353 | int ret = 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 354 | |
| 355 | if (act == __BLK_TA_QUEUE) { |
| 356 | inflight_add(p, t->sector, t->bytes); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 357 | ret = handle_queue_trace(t, p); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 358 | } else if (act == __BLK_TA_REQUEUE) { |
| 359 | p->o.inflight--; |
| 360 | } else if (act == __BLK_TA_BACKMERGE) { |
| 361 | struct inflight *i; |
| 362 | |
| 363 | i = inflight_find(t->sector + (t->bytes >> 9)); |
| 364 | if (i) |
| 365 | inflight_remove(i); |
| 366 | |
| 367 | i = inflight_find(t->sector); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 368 | if (i) |
| 369 | inflight_merge(i, t_to_rwdir(t), t->bytes); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 370 | } else if (act == __BLK_TA_FRONTMERGE) { |
| 371 | struct inflight *i; |
| 372 | |
| 373 | i = inflight_find(t->sector + (t->bytes >> 9)); |
| 374 | if (i) |
| 375 | inflight_remove(i); |
| 376 | |
| 377 | i = inflight_find(t->sector); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 378 | if (i) |
| 379 | inflight_merge(i, t_to_rwdir(t), 0); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 380 | } else if (act == __BLK_TA_COMPLETE) { |
| 381 | struct inflight *i; |
| 382 | |
| 383 | i = inflight_find(t->sector + (t->bytes >> 9)); |
Jens Axboe | 047623b | 2014-09-17 17:58:31 +0200 | [diff] [blame] | 384 | if (i) { |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 385 | i->p->o.kb[t_to_rwdir(t)] += (t->bytes >> 10); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 386 | inflight_remove(i); |
Jens Axboe | 047623b | 2014-09-17 17:58:31 +0200 | [diff] [blame] | 387 | } |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 388 | } |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 389 | |
| 390 | return ret; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | static void byteswap_trace(struct blk_io_trace *t) |
| 394 | { |
| 395 | t->magic = fio_swap32(t->magic); |
| 396 | t->sequence = fio_swap32(t->sequence); |
| 397 | t->time = fio_swap64(t->time); |
| 398 | t->sector = fio_swap64(t->sector); |
| 399 | t->bytes = fio_swap32(t->bytes); |
| 400 | t->action = fio_swap32(t->action); |
| 401 | t->pid = fio_swap32(t->pid); |
| 402 | t->device = fio_swap32(t->device); |
| 403 | t->cpu = fio_swap32(t->cpu); |
| 404 | t->error = fio_swap16(t->error); |
| 405 | t->pdu_len = fio_swap16(t->pdu_len); |
| 406 | } |
| 407 | |
| 408 | static struct btrace_pid *pid_hash_find(pid_t pid, struct flist_head *list) |
| 409 | { |
| 410 | struct flist_head *e; |
| 411 | struct btrace_pid *p; |
| 412 | |
| 413 | flist_for_each(e, list) { |
| 414 | p = flist_entry(e, struct btrace_pid, hash_list); |
| 415 | if (p->pid == pid) |
| 416 | return p; |
| 417 | } |
| 418 | |
| 419 | return NULL; |
| 420 | } |
| 421 | |
| 422 | static struct btrace_pid *pid_hash_get(pid_t pid) |
| 423 | { |
| 424 | struct flist_head *hash_list; |
| 425 | struct btrace_pid *p; |
| 426 | |
| 427 | hash_list = &pid_hash[hash_long(pid, PID_HASH_BITS)]; |
| 428 | |
| 429 | p = pid_hash_find(pid, hash_list); |
| 430 | if (!p) { |
| 431 | int i; |
| 432 | |
| 433 | p = calloc(1, sizeof(*p)); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 434 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 435 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 436 | p->o.first_ttime[i] = -1ULL; |
| 437 | p->o.last_ttime[i] = -1ULL; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 438 | p->o.last_end[i] = -1ULL; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 439 | } |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 440 | |
| 441 | p->pid = pid; |
| 442 | flist_add_tail(&p->hash_list, hash_list); |
| 443 | flist_add_tail(&p->pid_list, &pid_list); |
| 444 | } |
| 445 | |
| 446 | return p; |
| 447 | } |
| 448 | |
| 449 | /* |
| 450 | * Load a blktrace file by reading all the blk_io_trace entries, and storing |
| 451 | * them as io_pieces like the fio text version would do. |
| 452 | */ |
Jens Axboe | 0f7f9a9 | 2014-11-06 09:21:10 -0700 | [diff] [blame^] | 453 | static int load_blktrace(const char *fname, int need_swap) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 454 | { |
| 455 | struct btrace_pid *p; |
| 456 | unsigned long traces; |
| 457 | struct blk_io_trace t; |
| 458 | struct fifo *fifo; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 459 | int fd, ret = 0; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 460 | |
Jens Axboe | 0f7f9a9 | 2014-11-06 09:21:10 -0700 | [diff] [blame^] | 461 | fd = open(fname, O_RDONLY); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 462 | if (fd < 0) { |
| 463 | perror("open trace file\n"); |
| 464 | return 1; |
| 465 | } |
| 466 | |
| 467 | fifo = fifo_alloc(TRACE_FIFO_SIZE); |
| 468 | |
| 469 | traces = 0; |
| 470 | do { |
Jens Axboe | 0f7f9a9 | 2014-11-06 09:21:10 -0700 | [diff] [blame^] | 471 | ret = trace_fifo_get(fifo, fd, &t, sizeof(t)); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 472 | if (ret < 0) |
| 473 | goto err; |
| 474 | else if (!ret) |
| 475 | break; |
| 476 | else if (ret < (int) sizeof(t)) { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 477 | log_err("fio: short fifo get\n"); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 478 | break; |
| 479 | } |
| 480 | |
| 481 | if (need_swap) |
| 482 | byteswap_trace(&t); |
| 483 | |
| 484 | if ((t.magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 485 | log_err("fio: bad magic in blktrace data: %x\n", t.magic); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 486 | goto err; |
| 487 | } |
| 488 | if ((t.magic & 0xff) != BLK_IO_TRACE_VERSION) { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 489 | log_err("fio: bad blktrace version %d\n", t.magic & 0xff); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 490 | goto err; |
| 491 | } |
| 492 | ret = discard_pdu(fifo, fd, &t); |
| 493 | if (ret < 0) { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 494 | log_err("blktrace lseek\n"); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 495 | goto err; |
| 496 | } else if (t.pdu_len != ret) { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 497 | log_err("fio: discarded %d of %d\n", ret, t.pdu_len); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 498 | goto err; |
| 499 | } |
| 500 | |
| 501 | p = pid_hash_get(t.pid); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 502 | ret = handle_trace(&t, p); |
| 503 | if (ret) |
| 504 | break; |
| 505 | p->o.last_ttime[t_to_rwdir(&t)] = t.time; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 506 | traces++; |
| 507 | } while (1); |
| 508 | |
| 509 | fifo_free(fifo); |
| 510 | close(fd); |
| 511 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 512 | if (ret) |
| 513 | return ret; |
| 514 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 515 | if (output_ascii) |
| 516 | printf("Traces loaded: %lu\n", traces); |
| 517 | |
| 518 | return 0; |
| 519 | err: |
| 520 | close(fd); |
| 521 | fifo_free(fifo); |
| 522 | return 1; |
| 523 | } |
| 524 | |
| 525 | static int bs_cmp(const void *ba, const void *bb) |
| 526 | { |
| 527 | const struct bs *bsa = ba; |
| 528 | const struct bs *bsb = bb; |
| 529 | |
| 530 | return bsb->nr - bsa->nr; |
| 531 | } |
| 532 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 533 | static unsigned long o_to_kb_rate(struct btrace_out *o, int rw) |
| 534 | { |
| 535 | uint64_t usec = (o->last_ttime[rw] - o->first_ttime[rw]) / 1000ULL; |
| 536 | uint64_t val; |
| 537 | |
| 538 | if (!usec) |
| 539 | return 0; |
| 540 | |
| 541 | val = o->kb[rw] * 1000ULL; |
| 542 | return val / (usec / 1000ULL); |
| 543 | } |
| 544 | |
| 545 | static uint64_t o_first_ttime(struct btrace_out *o) |
| 546 | { |
| 547 | uint64_t first; |
| 548 | |
| 549 | first = min(o->first_ttime[0], o->first_ttime[1]); |
| 550 | return min(first, o->first_ttime[2]); |
| 551 | } |
| 552 | |
| 553 | static uint64_t o_longest_ttime(struct btrace_out *o) |
| 554 | { |
| 555 | uint64_t ret = 0; |
| 556 | int i; |
| 557 | |
| 558 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 559 | uint64_t diff; |
| 560 | |
| 561 | diff = o->last_ttime[i] - o->first_ttime[i]; |
| 562 | ret = max(diff, ret); |
| 563 | } |
| 564 | |
| 565 | return ret; |
| 566 | } |
| 567 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 568 | static void __output_p_ascii(struct btrace_pid *p, unsigned long *ios) |
| 569 | { |
| 570 | const char *msg[] = { "reads", "writes", "trims" }; |
| 571 | struct btrace_out *o = &p->o; |
Jens Axboe | 047623b | 2014-09-17 17:58:31 +0200 | [diff] [blame] | 572 | unsigned long total, usec; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 573 | int i, j; |
| 574 | |
| 575 | printf("[pid:\t%u]\n", p->pid); |
| 576 | |
| 577 | total = ddir_rw_sum(o->ios); |
| 578 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 579 | float perc; |
| 580 | |
| 581 | if (!o->ios[i]) |
| 582 | continue; |
| 583 | |
| 584 | ios[i] += o->ios[i] + o->merges[i]; |
| 585 | printf("%s\n", msg[i]); |
| 586 | perc = ((float) o->ios[i] * 100.0) / (float) total; |
| 587 | printf("\tios: %lu (perc=%3.2f%%)\n", o->ios[i], perc); |
| 588 | perc = ((float) o->merges[i] * 100.0) / (float) total; |
| 589 | printf("\tmerges: %lu (perc=%3.2f%%)\n", o->merges[i], perc); |
| 590 | perc = ((float) o->seq[i] * 100.0) / (float) o->ios[i]; |
Jens Axboe | b2a657f | 2014-09-23 16:06:04 -0600 | [diff] [blame] | 591 | printf("\tseq: %lu (perc=%3.2f%%)\n", (unsigned long) o->seq[i], perc); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 592 | printf("\trate: %lu KB/sec\n", o_to_kb_rate(o, i)); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 593 | |
| 594 | for (j = 0; j < o->nr_bs[i]; j++) { |
| 595 | struct bs *bs = &o->bs[i][j]; |
| 596 | |
| 597 | perc = (((float) bs->nr * 100.0) / (float) o->ios[i]); |
| 598 | printf("\tbs=%u, perc=%3.2f%%\n", bs->bs, perc); |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | printf("depth:\t%u\n", o->depth); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 603 | usec = o_longest_ttime(o) / 1000ULL; |
Jens Axboe | 047623b | 2014-09-17 17:58:31 +0200 | [diff] [blame] | 604 | printf("usec:\t%lu (delay=%llu)\n", usec, (unsigned long long) o->start_delay); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 605 | |
| 606 | printf("files:\t"); |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 607 | for (i = 0; i < p->nr_files; i++) |
| 608 | printf("%s,", p->files[i].name); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 609 | printf("\n"); |
| 610 | |
| 611 | printf("\n"); |
| 612 | } |
| 613 | |
| 614 | static int __output_p_fio(struct btrace_pid *p, unsigned long *ios) |
| 615 | { |
| 616 | struct btrace_out *o = &p->o; |
| 617 | unsigned long total; |
Jens Axboe | cdc4d67 | 2014-09-16 17:35:55 +0200 | [diff] [blame] | 618 | unsigned long long time; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 619 | float perc; |
| 620 | int i, j; |
| 621 | |
| 622 | if ((o->ios[0] + o->ios[1]) && o->ios[2]) { |
| 623 | log_err("fio: trace has both read/write and trim\n"); |
| 624 | return 1; |
| 625 | } |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 626 | if (!p->nr_files) { |
| 627 | log_err("fio: no devices found\n"); |
| 628 | return 1; |
| 629 | } |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 630 | |
| 631 | printf("[pid%u]\n", p->pid); |
| 632 | printf("direct=1\n"); |
| 633 | if (o->depth == 1) |
| 634 | printf("ioengine=sync\n"); |
| 635 | else |
| 636 | printf("ioengine=libaio\niodepth=%u\n", o->depth); |
| 637 | |
| 638 | if (o->ios[0] && !o->ios[1]) |
| 639 | printf("rw=randread\n"); |
| 640 | else if (!o->ios[0] && o->ios[1]) |
| 641 | printf("rw=randwrite\n"); |
| 642 | else if (o->ios[2]) |
| 643 | printf("rw=randtrim\n"); |
| 644 | else { |
| 645 | printf("rw=randrw\n"); |
| 646 | total = ddir_rw_sum(o->ios); |
| 647 | perc = ((float) o->ios[0] * 100.0) / (float) total; |
| 648 | printf("rwmixread=%u\n", (int) (perc + 0.99)); |
| 649 | } |
| 650 | |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 651 | printf("percentage_random="); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 652 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 653 | if (o->seq[i] && o->ios[i]) { |
| 654 | perc = ((float) o->seq[i] * 100.0) / (float) o->ios[i]; |
| 655 | if (perc >= 99.0) |
| 656 | perc = 100.0; |
| 657 | } else |
| 658 | perc = 100.0; |
| 659 | |
| 660 | if (i) |
| 661 | printf(","); |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 662 | perc = 100.0 - perc; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 663 | printf("%u", (int) perc); |
| 664 | } |
| 665 | printf("\n"); |
| 666 | |
| 667 | printf("filename="); |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 668 | for (i = 0; i < p->nr_files; i++) { |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 669 | if (i) |
| 670 | printf(":"); |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 671 | printf("%s", p->files[i].name); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 672 | } |
| 673 | printf("\n"); |
| 674 | |
| 675 | printf("startdelay=%llus\n", o->start_delay / 1000000ULL); |
| 676 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 677 | time = o_longest_ttime(o); |
Jens Axboe | cdc4d67 | 2014-09-16 17:35:55 +0200 | [diff] [blame] | 678 | time = (time + 1000000000ULL - 1) / 1000000000ULL; |
| 679 | printf("runtime=%llus\n", time); |
| 680 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 681 | printf("bssplit="); |
| 682 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 683 | |
| 684 | if (i && o->nr_bs[i - 1] && o->nr_bs[i]) |
| 685 | printf(","); |
| 686 | |
| 687 | for (j = 0; j < o->nr_bs[i]; j++) { |
| 688 | struct bs *bs = &o->bs[i][j]; |
| 689 | |
| 690 | perc = (((float) bs->nr * 100.0) / (float) o->ios[i]); |
| 691 | if (perc < 1.00) |
| 692 | continue; |
| 693 | if (j) |
| 694 | printf(":"); |
| 695 | if (j + 1 == o->nr_bs[i]) |
| 696 | printf("%u/", bs->bs); |
| 697 | else |
| 698 | printf("%u/%u", bs->bs, (int) perc); |
| 699 | } |
| 700 | } |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 701 | printf("\n"); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 702 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 703 | if (set_rate) { |
| 704 | printf("rate="); |
| 705 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 706 | unsigned long rate; |
| 707 | |
| 708 | rate = o_to_kb_rate(o, i); |
| 709 | if (i) |
| 710 | printf(","); |
| 711 | if (rate) |
| 712 | printf("%luk", rate); |
| 713 | } |
| 714 | printf("\n"); |
| 715 | } |
| 716 | |
| 717 | printf("\n"); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 718 | return 0; |
| 719 | } |
| 720 | |
| 721 | static int __output_p(struct btrace_pid *p, unsigned long *ios) |
| 722 | { |
| 723 | struct btrace_out *o = &p->o; |
| 724 | int i, ret = 0; |
| 725 | |
| 726 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 727 | if (o->nr_bs[i] <= 1) |
| 728 | continue; |
| 729 | qsort(o->bs[i], o->nr_bs[i], sizeof(struct bs), bs_cmp); |
| 730 | } |
| 731 | |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 732 | if (filename) { |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 733 | p->files = malloc(sizeof(struct trace_file)); |
| 734 | p->nr_files++; |
| 735 | p->files[0].name = filename; |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 736 | } |
| 737 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 738 | if (output_ascii) |
| 739 | __output_p_ascii(p, ios); |
| 740 | else |
| 741 | ret = __output_p_fio(p, ios); |
| 742 | |
| 743 | return ret; |
| 744 | } |
| 745 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 746 | static void remove_ddir(struct btrace_out *o, int rw) |
| 747 | { |
| 748 | o->ios[rw] = 0; |
| 749 | } |
| 750 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 751 | static int prune_entry(struct btrace_out *o) |
| 752 | { |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 753 | unsigned long rate; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 754 | uint64_t time; |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 755 | int i; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 756 | |
| 757 | if (ddir_rw_sum(o->ios) < ios_threshold) |
| 758 | return 1; |
| 759 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 760 | time = o_longest_ttime(o) / 1000ULL; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 761 | if (time < rt_threshold) |
| 762 | return 1; |
| 763 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 764 | rate = 0; |
| 765 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 766 | unsigned long this_rate; |
| 767 | |
| 768 | this_rate = o_to_kb_rate(o, i); |
| 769 | if (this_rate < rate_threshold) { |
| 770 | remove_ddir(o, i); |
| 771 | this_rate = 0; |
| 772 | } |
| 773 | rate += this_rate; |
| 774 | } |
| 775 | |
| 776 | if (rate < rate_threshold) |
| 777 | return 1; |
| 778 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 779 | return 0; |
| 780 | } |
| 781 | |
| 782 | static int entry_cmp(void *priv, struct flist_head *a, struct flist_head *b) |
| 783 | { |
| 784 | struct btrace_pid *pa = flist_entry(a, struct btrace_pid, pid_list); |
| 785 | struct btrace_pid *pb = flist_entry(b, struct btrace_pid, pid_list); |
| 786 | |
| 787 | return ddir_rw_sum(pb->o.ios) - ddir_rw_sum(pa->o.ios); |
| 788 | } |
| 789 | |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 790 | static void free_p(struct btrace_pid *p) |
| 791 | { |
| 792 | struct btrace_out *o = &p->o; |
| 793 | int i; |
| 794 | |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 795 | for (i = 0; i < p->nr_files; i++) { |
| 796 | if (p->files[i].name && p->files[i].name != filename) |
| 797 | free(p->files[i].name); |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | for (i = 0; i < DDIR_RWDIR_CNT; i++) |
| 801 | free(o->bs[i]); |
| 802 | |
Jens Axboe | d8943e1 | 2014-09-16 20:17:55 -0600 | [diff] [blame] | 803 | free(p->files); |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 804 | flist_del(&p->pid_list); |
| 805 | flist_del(&p->hash_list); |
| 806 | free(p); |
| 807 | } |
| 808 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 809 | static int output_p(void) |
| 810 | { |
| 811 | unsigned long ios[DDIR_RWDIR_CNT]; |
| 812 | struct flist_head *e, *tmp; |
| 813 | int ret = 0; |
| 814 | |
| 815 | flist_for_each_safe(e, tmp, &pid_list) { |
| 816 | struct btrace_pid *p; |
| 817 | |
| 818 | p = flist_entry(e, struct btrace_pid, pid_list); |
| 819 | if (prune_entry(&p->o)) { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 820 | free_p(p); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 821 | continue; |
| 822 | } |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 823 | p->o.start_delay = (o_first_ttime(&p->o) / 1000ULL) - first_ttime; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 824 | } |
| 825 | |
| 826 | memset(ios, 0, sizeof(ios)); |
| 827 | |
| 828 | flist_sort(NULL, &pid_list, entry_cmp); |
| 829 | |
| 830 | flist_for_each(e, &pid_list) { |
| 831 | struct btrace_pid *p; |
| 832 | |
| 833 | p = flist_entry(e, struct btrace_pid, pid_list); |
| 834 | ret |= __output_p(p, ios); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 835 | if (ret && !output_ascii) |
| 836 | break; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 837 | } |
| 838 | |
| 839 | if (output_ascii) |
| 840 | printf("Total: reads=%lu, writes=%lu\n", ios[0], ios[1]); |
| 841 | |
| 842 | return ret; |
| 843 | } |
| 844 | |
| 845 | static int usage(char *argv[]) |
| 846 | { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 847 | log_err("%s: <blktrace bin file>\n", argv[0]); |
| 848 | log_err("\t-t\tUsec threshold to ignore task\n"); |
| 849 | log_err("\t-n\tNumber IOS threshold to ignore task\n"); |
| 850 | log_err("\t-f\tFio job file output\n"); |
| 851 | log_err("\t-d\tUse this file/device for replay\n"); |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 852 | log_err("\t-r\tIgnore jobs with less than this KB/sec rate\n"); |
| 853 | log_err("\t-R\tSet rate in fio job\n"); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 854 | return 1; |
| 855 | } |
| 856 | |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 857 | static int trace_needs_swap(const char *trace_file, int *swap) |
| 858 | { |
| 859 | struct blk_io_trace t; |
| 860 | int fd, ret; |
| 861 | |
| 862 | *swap = -1; |
| 863 | |
| 864 | fd = open(trace_file, O_RDONLY); |
| 865 | if (fd < 0) { |
| 866 | perror("open"); |
| 867 | return 1; |
| 868 | } |
| 869 | |
| 870 | ret = read(fd, &t, sizeof(t)); |
| 871 | if (ret < 0) { |
Jens Axboe | 31da12c | 2014-10-14 19:55:18 -0600 | [diff] [blame] | 872 | close(fd); |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 873 | perror("read"); |
| 874 | return 1; |
| 875 | } else if (ret != sizeof(t)) { |
Jens Axboe | 31da12c | 2014-10-14 19:55:18 -0600 | [diff] [blame] | 876 | close(fd); |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 877 | log_err("fio: short read on trace file\n"); |
| 878 | return 1; |
| 879 | } |
| 880 | |
| 881 | close(fd); |
| 882 | |
| 883 | if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) |
| 884 | *swap = 0; |
| 885 | else { |
| 886 | /* |
| 887 | * Maybe it needs to be endian swapped... |
| 888 | */ |
| 889 | t.magic = fio_swap32(t.magic); |
| 890 | if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) |
| 891 | *swap = 1; |
| 892 | } |
| 893 | |
| 894 | if (*swap == -1) { |
| 895 | log_err("fio: blktrace appears corrupt\n"); |
| 896 | return 1; |
| 897 | } |
| 898 | |
| 899 | return 0; |
| 900 | } |
| 901 | |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 902 | int main(int argc, char *argv[]) |
| 903 | { |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 904 | int need_swap, i, c; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 905 | |
| 906 | if (argc < 2) |
| 907 | return usage(argv); |
| 908 | |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 909 | while ((c = getopt(argc, argv, "t:n:fd:r:R")) != -1) { |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 910 | switch (c) { |
Jens Axboe | 183f392 | 2014-09-18 17:23:55 +0200 | [diff] [blame] | 911 | case 'R': |
| 912 | set_rate = 1; |
| 913 | break; |
| 914 | case 'r': |
| 915 | rate_threshold = atoi(optarg); |
| 916 | break; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 917 | case 't': |
| 918 | rt_threshold = atoi(optarg); |
| 919 | break; |
| 920 | case 'n': |
| 921 | ios_threshold = atoi(optarg); |
| 922 | break; |
| 923 | case 'f': |
| 924 | output_ascii = 0; |
| 925 | break; |
Jens Axboe | b064a14 | 2014-09-16 17:40:03 +0200 | [diff] [blame] | 926 | case 'd': |
| 927 | filename = strdup(optarg); |
| 928 | break; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 929 | case '?': |
| 930 | default: |
| 931 | return usage(argv); |
| 932 | } |
| 933 | } |
| 934 | |
| 935 | if (argc == optind) |
| 936 | return usage(argv); |
| 937 | |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 938 | if (trace_needs_swap(argv[optind], &need_swap)) |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 939 | return 1; |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 940 | |
| 941 | for (i = 0; i < PID_HASH_SIZE; i++) |
| 942 | INIT_FLIST_HEAD(&pid_hash[i]); |
Jens Axboe | 5033162 | 2014-09-16 18:28:42 +0200 | [diff] [blame] | 943 | for (i = 0; i < INFLIGHT_HASH_SIZE; i++) |
| 944 | INIT_FLIST_HEAD(&inflight_hash[i]); |
Jens Axboe | 42a80e3 | 2014-09-16 17:06:52 +0200 | [diff] [blame] | 945 | |
| 946 | load_blktrace(argv[optind], need_swap); |
| 947 | first_ttime /= 1000ULL; |
| 948 | |
| 949 | return output_p(); |
| 950 | } |