Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Code related to writing an iolog of what a thread is doing, and to |
| 3 | * later read that back and replay |
| 4 | */ |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
Jens Axboe | 5921e80 | 2008-05-30 15:02:38 +0200 | [diff] [blame] | 7 | #include <libgen.h> |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 8 | #include <assert.h> |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 9 | #include "flist.h" |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 10 | #include "fio.h" |
| 11 | |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 12 | static const char iolog_ver2[] = "fio version 2 iolog"; |
| 13 | |
Jens Axboe | 691c8fb | 2008-03-07 14:26:26 +0100 | [diff] [blame] | 14 | void queue_io_piece(struct thread_data *td, struct io_piece *ipo) |
| 15 | { |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 16 | flist_add_tail(&ipo->list, &td->io_log_list); |
Jens Axboe | 691c8fb | 2008-03-07 14:26:26 +0100 | [diff] [blame] | 17 | td->total_io_size += ipo->len; |
| 18 | } |
| 19 | |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 20 | void log_io_u(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 21 | { |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 22 | const char *act[] = { "read", "write", "sync" }; |
| 23 | |
| 24 | assert(io_u->ddir < 3); |
| 25 | |
| 26 | if (!td->o.write_iolog_file) |
| 27 | return; |
| 28 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 29 | fprintf(td->iolog_f, "%s %s %llu %lu\n", io_u->file->file_name, |
| 30 | act[io_u->ddir], io_u->offset, |
| 31 | io_u->buflen); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | void log_file(struct thread_data *td, struct fio_file *f, |
| 35 | enum file_log_act what) |
| 36 | { |
| 37 | const char *act[] = { "add", "open", "close" }; |
| 38 | |
| 39 | assert(what < 3); |
| 40 | |
| 41 | if (!td->o.write_iolog_file) |
| 42 | return; |
| 43 | |
Jens Axboe | 393ca7e | 2008-05-15 09:17:42 +0200 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * this happens on the pre-open/close done before the job starts |
| 47 | */ |
| 48 | if (!td->iolog_f) |
| 49 | return; |
| 50 | |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 51 | fprintf(td->iolog_f, "%s %s\n", f->file_name, act[what]); |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 52 | } |
| 53 | |
Jens Axboe | a61edde | 2007-05-15 14:29:58 +0200 | [diff] [blame] | 54 | static void iolog_delay(struct thread_data *td, unsigned long delay) |
| 55 | { |
| 56 | unsigned long usec = utime_since_now(&td->last_issue); |
| 57 | |
| 58 | if (delay < usec) |
| 59 | return; |
| 60 | |
| 61 | delay -= usec; |
| 62 | |
| 63 | /* |
| 64 | * less than 100 usec delay, just regard it as noise |
| 65 | */ |
| 66 | if (delay < 100) |
| 67 | return; |
| 68 | |
| 69 | usec_sleep(td, delay); |
| 70 | } |
| 71 | |
Jens Axboe | f718273 | 2008-03-10 13:57:58 +0100 | [diff] [blame] | 72 | static int ipo_special(struct thread_data *td, struct io_piece *ipo) |
| 73 | { |
| 74 | struct fio_file *f; |
| 75 | int ret; |
| 76 | |
| 77 | /* |
| 78 | * Not a special ipo |
| 79 | */ |
| 80 | if (ipo->ddir != DDIR_INVAL) |
| 81 | return 0; |
| 82 | |
| 83 | f = td->files[ipo->fileno]; |
| 84 | |
| 85 | switch (ipo->file_action) { |
| 86 | case FIO_LOG_OPEN_FILE: |
| 87 | ret = td_io_open_file(td, f); |
| 88 | if (!ret) { |
| 89 | free(ipo); |
| 90 | break; |
| 91 | } |
| 92 | td_verror(td, ret, "iolog open file"); |
| 93 | return -1; |
| 94 | case FIO_LOG_CLOSE_FILE: |
| 95 | td_io_close_file(td, f); |
| 96 | break; |
| 97 | case FIO_LOG_UNLINK_FILE: |
| 98 | unlink(f->file_name); |
| 99 | break; |
| 100 | default: |
| 101 | log_err("fio: bad file action %d\n", ipo->file_action); |
| 102 | break; |
| 103 | } |
| 104 | |
| 105 | return 1; |
| 106 | } |
| 107 | |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 108 | int read_iolog_get(struct thread_data *td, struct io_u *io_u) |
| 109 | { |
| 110 | struct io_piece *ipo; |
| 111 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 112 | while (!flist_empty(&td->io_log_list)) { |
Jens Axboe | f718273 | 2008-03-10 13:57:58 +0100 | [diff] [blame] | 113 | int ret; |
| 114 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 115 | ipo = flist_entry(td->io_log_list.next, struct io_piece, list); |
| 116 | flist_del(&ipo->list); |
Jens Axboe | a61edde | 2007-05-15 14:29:58 +0200 | [diff] [blame] | 117 | |
Jens Axboe | f718273 | 2008-03-10 13:57:58 +0100 | [diff] [blame] | 118 | ret = ipo_special(td, ipo); |
| 119 | if (ret < 0) { |
| 120 | free(ipo); |
| 121 | break; |
| 122 | } else if (ret > 0) { |
| 123 | free(ipo); |
| 124 | continue; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 125 | } |
| 126 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 127 | io_u->offset = ipo->offset; |
| 128 | io_u->buflen = ipo->len; |
| 129 | io_u->ddir = ipo->ddir; |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 130 | io_u->file = td->files[ipo->fileno]; |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 131 | get_file(io_u->file); |
| 132 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 133 | dprint(FD_IO, "iolog: get %llu/%lu/%s\n", io_u->offset, |
| 134 | io_u->buflen, io_u->file->file_name); |
| 135 | |
Jens Axboe | a61edde | 2007-05-15 14:29:58 +0200 | [diff] [blame] | 136 | if (ipo->delay) |
| 137 | iolog_delay(td, ipo->delay); |
| 138 | |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 139 | free(ipo); |
| 140 | return 0; |
| 141 | } |
| 142 | |
Jens Axboe | 20e354e | 2007-07-23 14:36:16 +0200 | [diff] [blame] | 143 | td->done = 1; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 144 | return 1; |
| 145 | } |
| 146 | |
| 147 | void prune_io_piece_log(struct thread_data *td) |
| 148 | { |
| 149 | struct io_piece *ipo; |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 150 | struct rb_node *n; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 151 | |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 152 | while ((n = rb_first(&td->io_hist_tree)) != NULL) { |
| 153 | ipo = rb_entry(n, struct io_piece, rb_node); |
| 154 | rb_erase(n, &td->io_hist_tree); |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 155 | free(ipo); |
| 156 | } |
Jens Axboe | 8ce9cd3 | 2008-02-21 09:52:35 +0100 | [diff] [blame] | 157 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 158 | while (!flist_empty(&td->io_hist_list)) { |
| 159 | ipo = flist_entry(td->io_hist_list.next, struct io_piece, list); |
| 160 | flist_del(&ipo->list); |
Jens Axboe | 8ce9cd3 | 2008-02-21 09:52:35 +0100 | [diff] [blame] | 161 | free(ipo); |
| 162 | } |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | /* |
Jens Axboe | 34403fb | 2007-03-02 21:43:25 +0100 | [diff] [blame] | 166 | * log a successful write, so we can unwind the log for verify |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 167 | */ |
| 168 | void log_io_piece(struct thread_data *td, struct io_u *io_u) |
| 169 | { |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 170 | struct rb_node **p, *parent; |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 171 | struct io_piece *ipo, *__ipo; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 172 | |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 173 | ipo = malloc(sizeof(struct io_piece)); |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 174 | ipo->file = io_u->file; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 175 | ipo->offset = io_u->offset; |
| 176 | ipo->len = io_u->buflen; |
| 177 | |
| 178 | /* |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 179 | * We don't need to sort the entries, if: |
| 180 | * |
| 181 | * Sequential writes, or |
| 182 | * Random writes that lay out the file as it goes along |
| 183 | * |
| 184 | * For both these cases, just reading back data in the order we |
| 185 | * wrote it out is the fastest. |
| 186 | */ |
Jens Axboe | 9b23c9f | 2008-02-21 09:51:32 +0100 | [diff] [blame] | 187 | if (!td_random(td) || !td->o.overwrite) { |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 188 | INIT_FLIST_HEAD(&ipo->list); |
| 189 | flist_add_tail(&ipo->list, &td->io_hist_list); |
Jens Axboe | 8de8f04 | 2007-03-27 10:36:12 +0200 | [diff] [blame] | 190 | return; |
| 191 | } |
| 192 | |
| 193 | RB_CLEAR_NODE(&ipo->rb_node); |
| 194 | p = &td->io_hist_tree.rb_node; |
| 195 | parent = NULL; |
| 196 | |
| 197 | /* |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 198 | * Sort the entry into the verification list |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 199 | */ |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 200 | while (*p) { |
| 201 | parent = *p; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 202 | |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 203 | __ipo = rb_entry(parent, struct io_piece, rb_node); |
Jens Axboe | bb5d7d0 | 2007-03-27 10:21:25 +0200 | [diff] [blame] | 204 | if (ipo->offset <= __ipo->offset) |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 205 | p = &(*p)->rb_left; |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 206 | else |
Jens Axboe | bb5d7d0 | 2007-03-27 10:21:25 +0200 | [diff] [blame] | 207 | p = &(*p)->rb_right; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 208 | } |
| 209 | |
Jens Axboe | 4b87898 | 2007-03-26 09:32:22 +0200 | [diff] [blame] | 210 | rb_link_node(&ipo->rb_node, parent, p); |
| 211 | rb_insert_color(&ipo->rb_node, &td->io_hist_tree); |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | void write_iolog_close(struct thread_data *td) |
| 215 | { |
| 216 | fflush(td->iolog_f); |
| 217 | fclose(td->iolog_f); |
| 218 | free(td->iolog_buf); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 219 | td->iolog_f = NULL; |
| 220 | td->iolog_buf = NULL; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 221 | } |
| 222 | |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 223 | /* |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 224 | * Read version 2 iolog data. It is enhanced to include per-file logging, |
| 225 | * syncs, etc. |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 226 | */ |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 227 | static int read_iolog2(struct thread_data *td, FILE *f) |
| 228 | { |
| 229 | unsigned long long offset; |
| 230 | unsigned int bytes; |
Jens Axboe | 53fa9b6 | 2007-07-23 11:25:39 +0200 | [diff] [blame] | 231 | int reads, writes, fileno = 0, file_action = 0; /* stupid gcc */ |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 232 | char *fname, *act; |
| 233 | char *str, *p; |
Jens Axboe | 53fa9b6 | 2007-07-23 11:25:39 +0200 | [diff] [blame] | 234 | enum fio_ddir rw; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 235 | |
| 236 | free_release_files(td); |
| 237 | |
| 238 | /* |
| 239 | * Read in the read iolog and store it, reuse the infrastructure |
| 240 | * for doing verifications. |
| 241 | */ |
| 242 | str = malloc(4096); |
| 243 | fname = malloc(256+16); |
| 244 | act = malloc(256+16); |
| 245 | |
| 246 | reads = writes = 0; |
| 247 | while ((p = fgets(str, 4096, f)) != NULL) { |
| 248 | struct io_piece *ipo; |
| 249 | int r; |
| 250 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 251 | r = sscanf(p, "%256s %256s %llu %u", fname, act, &offset, |
| 252 | &bytes); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 253 | if (r == 4) { |
| 254 | /* |
| 255 | * Check action first |
| 256 | */ |
| 257 | if (!strcmp(act, "read")) |
| 258 | rw = DDIR_READ; |
| 259 | else if (!strcmp(act, "write")) |
| 260 | rw = DDIR_WRITE; |
| 261 | else if (!strcmp(act, "sync")) |
| 262 | rw = DDIR_SYNC; |
| 263 | else { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 264 | log_err("fio: bad iolog file action: %s\n", |
| 265 | act); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 266 | continue; |
| 267 | } |
| 268 | } else if (r == 2) { |
| 269 | rw = DDIR_INVAL; |
| 270 | if (!strcmp(act, "add")) { |
| 271 | td->o.nr_files++; |
| 272 | fileno = add_file(td, fname); |
| 273 | file_action = FIO_LOG_ADD_FILE; |
| 274 | continue; |
| 275 | } else if (!strcmp(act, "open")) { |
| 276 | fileno = get_fileno(td, fname); |
| 277 | file_action = FIO_LOG_OPEN_FILE; |
| 278 | } else if (!strcmp(act, "close")) { |
| 279 | fileno = get_fileno(td, fname); |
| 280 | file_action = FIO_LOG_CLOSE_FILE; |
| 281 | } else { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 282 | log_err("fio: bad iolog file action: %s\n", |
| 283 | act); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 284 | continue; |
| 285 | } |
| 286 | } else { |
| 287 | log_err("bad iolog2: %s", p); |
| 288 | continue; |
| 289 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 290 | |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 291 | if (rw == DDIR_READ) |
| 292 | reads++; |
Jens Axboe | 4241ea8 | 2007-09-12 08:18:36 +0200 | [diff] [blame] | 293 | else if (rw == DDIR_WRITE) { |
Jens Axboe | 4241ea8 | 2007-09-12 08:18:36 +0200 | [diff] [blame] | 294 | /* |
| 295 | * Don't add a write for ro mode |
| 296 | */ |
| 297 | if (read_only) |
| 298 | continue; |
Jens Axboe | ed4aa70 | 2008-03-07 13:39:59 +0100 | [diff] [blame] | 299 | writes++; |
Jens Axboe | 4241ea8 | 2007-09-12 08:18:36 +0200 | [diff] [blame] | 300 | } else if (rw != DDIR_SYNC && rw != DDIR_INVAL) { |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 301 | log_err("bad ddir: %d\n", rw); |
| 302 | continue; |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * Make note of file |
| 307 | */ |
| 308 | ipo = malloc(sizeof(*ipo)); |
| 309 | memset(ipo, 0, sizeof(*ipo)); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 310 | INIT_FLIST_HEAD(&ipo->list); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 311 | ipo->offset = offset; |
| 312 | ipo->len = bytes; |
Jens Axboe | 53fa9b6 | 2007-07-23 11:25:39 +0200 | [diff] [blame] | 313 | ipo->ddir = rw; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 314 | if (bytes > td->o.max_bs[rw]) |
| 315 | td->o.max_bs[rw] = bytes; |
| 316 | if (rw == DDIR_INVAL) { |
| 317 | ipo->fileno = fileno; |
| 318 | ipo->file_action = file_action; |
| 319 | } |
Jens Axboe | 691c8fb | 2008-03-07 14:26:26 +0100 | [diff] [blame] | 320 | queue_io_piece(td, ipo); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | free(str); |
| 324 | free(act); |
| 325 | free(fname); |
| 326 | |
Jens Axboe | 4241ea8 | 2007-09-12 08:18:36 +0200 | [diff] [blame] | 327 | if (writes && read_only) { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 328 | log_err("fio: <%s> skips replay of %d writes due to" |
| 329 | " read-only\n", td->o.name, writes); |
Jens Axboe | 4241ea8 | 2007-09-12 08:18:36 +0200 | [diff] [blame] | 330 | writes = 0; |
| 331 | } |
| 332 | |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 333 | if (!reads && !writes) |
| 334 | return 1; |
| 335 | else if (reads && !writes) |
| 336 | td->o.td_ddir = TD_DDIR_READ; |
| 337 | else if (!reads && writes) |
| 338 | td->o.td_ddir = TD_DDIR_WRITE; |
| 339 | else |
| 340 | td->o.td_ddir = TD_DDIR_RW; |
| 341 | |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | /* |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 346 | * open iolog, check version, and call appropriate parser |
| 347 | */ |
| 348 | static int init_iolog_read(struct thread_data *td) |
| 349 | { |
| 350 | char buffer[256], *p; |
| 351 | FILE *f; |
| 352 | int ret; |
| 353 | |
| 354 | f = fopen(td->o.read_iolog_file, "r"); |
| 355 | if (!f) { |
| 356 | perror("fopen read iolog"); |
| 357 | return 1; |
| 358 | } |
| 359 | |
| 360 | p = fgets(buffer, sizeof(buffer), f); |
| 361 | if (!p) { |
| 362 | td_verror(td, errno, "iolog read"); |
| 363 | log_err("fio: unable to read iolog\n"); |
| 364 | return 1; |
| 365 | } |
| 366 | |
| 367 | /* |
| 368 | * version 2 of the iolog stores a specific string as the |
| 369 | * first line, check for that |
| 370 | */ |
| 371 | if (!strncmp(iolog_ver2, buffer, strlen(iolog_ver2))) |
| 372 | ret = read_iolog2(td, f); |
| 373 | else { |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 374 | log_err("fio: iolog version 1 is no longer supported\n"); |
| 375 | ret = 1; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | fclose(f); |
| 379 | return ret; |
| 380 | } |
| 381 | |
| 382 | /* |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 383 | * Setup a log for storing io patterns. |
| 384 | */ |
| 385 | static int init_iolog_write(struct thread_data *td) |
| 386 | { |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 387 | struct fio_file *ff; |
Jens Axboe | 076efc7 | 2006-10-27 11:24:25 +0200 | [diff] [blame] | 388 | FILE *f; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 389 | unsigned int i; |
Jens Axboe | 733ed59 | 2007-04-25 14:24:12 +0200 | [diff] [blame] | 390 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 391 | f = fopen(td->o.write_iolog_file, "w+"); |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 392 | if (!f) { |
| 393 | perror("fopen write iolog"); |
| 394 | return 1; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * That's it for writing, setup a log buffer and we're done. |
| 399 | */ |
| 400 | td->iolog_f = f; |
| 401 | td->iolog_buf = malloc(8192); |
| 402 | setvbuf(f, td->iolog_buf, _IOFBF, 8192); |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 403 | |
| 404 | /* |
| 405 | * write our version line |
| 406 | */ |
| 407 | if (fprintf(f, "%s\n", iolog_ver2) < 0) { |
| 408 | perror("iolog init\n"); |
| 409 | return 1; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * add all known files |
| 414 | */ |
| 415 | for_each_file(td, ff, i) |
| 416 | log_file(td, ff, FIO_LOG_ADD_FILE); |
| 417 | |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | int init_iolog(struct thread_data *td) |
| 422 | { |
Jens Axboe | b4a6a59 | 2006-10-20 13:54:47 +0200 | [diff] [blame] | 423 | int ret = 0; |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 424 | |
Jens Axboe | ba0fbe1 | 2007-03-09 14:34:23 +0100 | [diff] [blame] | 425 | if (td->io_ops->flags & FIO_DISKLESSIO) |
Jens Axboe | f48b467 | 2006-10-27 11:30:07 +0200 | [diff] [blame] | 426 | return 0; |
| 427 | |
Jens Axboe | fb7b71a | 2007-05-15 08:44:04 +0200 | [diff] [blame] | 428 | if (td->o.read_iolog_file) { |
| 429 | /* |
| 430 | * Check if it's a blktrace file and load that if possible. |
| 431 | * Otherwise assume it's a normal log file and load that. |
| 432 | */ |
| 433 | if (is_blktrace(td->o.read_iolog_file)) |
| 434 | ret = load_blktrace(td, td->o.read_iolog_file); |
| 435 | else |
| 436 | ret = init_iolog_read(td); |
| 437 | } else if (td->o.write_iolog_file) |
Jens Axboe | b4a6a59 | 2006-10-20 13:54:47 +0200 | [diff] [blame] | 438 | ret = init_iolog_write(td); |
| 439 | |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 440 | return ret; |
Jens Axboe | fb71fbd | 2006-10-20 09:15:46 +0200 | [diff] [blame] | 441 | } |
| 442 | |
Jens Axboe | 8914a9d | 2006-06-07 11:14:56 +0200 | [diff] [blame] | 443 | void setup_log(struct io_log **log) |
| 444 | { |
| 445 | struct io_log *l = malloc(sizeof(*l)); |
| 446 | |
| 447 | l->nr_samples = 0; |
| 448 | l->max_samples = 1024; |
| 449 | l->log = malloc(l->max_samples * sizeof(struct io_sample)); |
| 450 | *log = l; |
| 451 | } |
| 452 | |
Jens Axboe | bb3884d | 2007-01-17 17:23:11 +1100 | [diff] [blame] | 453 | void __finish_log(struct io_log *log, const char *name) |
Jens Axboe | 8914a9d | 2006-06-07 11:14:56 +0200 | [diff] [blame] | 454 | { |
Jens Axboe | 8914a9d | 2006-06-07 11:14:56 +0200 | [diff] [blame] | 455 | unsigned int i; |
Jens Axboe | bb3884d | 2007-01-17 17:23:11 +1100 | [diff] [blame] | 456 | FILE *f; |
Jens Axboe | 8914a9d | 2006-06-07 11:14:56 +0200 | [diff] [blame] | 457 | |
Jens Axboe | bb3884d | 2007-01-17 17:23:11 +1100 | [diff] [blame] | 458 | f = fopen(name, "w"); |
Jens Axboe | 8914a9d | 2006-06-07 11:14:56 +0200 | [diff] [blame] | 459 | if (!f) { |
| 460 | perror("fopen log"); |
| 461 | return; |
| 462 | } |
| 463 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 464 | for (i = 0; i < log->nr_samples; i++) { |
| 465 | fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, |
| 466 | log->log[i].ddir); |
| 467 | } |
Jens Axboe | 8914a9d | 2006-06-07 11:14:56 +0200 | [diff] [blame] | 468 | |
| 469 | fclose(f); |
| 470 | free(log->log); |
| 471 | free(log); |
| 472 | } |
Jens Axboe | bb3884d | 2007-01-17 17:23:11 +1100 | [diff] [blame] | 473 | |
| 474 | void finish_log(struct thread_data *td, struct io_log *log, const char *name) |
| 475 | { |
Jens Axboe | 748b23a | 2008-05-07 14:28:22 +0200 | [diff] [blame] | 476 | char file_name[256], *p; |
Jens Axboe | bb3884d | 2007-01-17 17:23:11 +1100 | [diff] [blame] | 477 | |
Jens Axboe | 84f8317 | 2008-04-04 23:15:19 +0200 | [diff] [blame] | 478 | snprintf(file_name, 200, "%s_%s.log", td->o.name, name); |
Jens Axboe | 748b23a | 2008-05-07 14:28:22 +0200 | [diff] [blame] | 479 | p = basename(file_name); |
| 480 | __finish_log(log, p); |
Jens Axboe | bb3884d | 2007-01-17 17:23:11 +1100 | [diff] [blame] | 481 | } |