stats.c revision 261071
1#define JEMALLOC_STATS_C_ 2#include "jemalloc/internal/jemalloc_internal.h" 3 4#define CTL_GET(n, v, t) do { \ 5 size_t sz = sizeof(t); \ 6 xmallctl(n, v, &sz, NULL, 0); \ 7} while (0) 8 9#define CTL_I_GET(n, v, t) do { \ 10 size_t mib[6]; \ 11 size_t miblen = sizeof(mib) / sizeof(size_t); \ 12 size_t sz = sizeof(t); \ 13 xmallctlnametomib(n, mib, &miblen); \ 14 mib[2] = i; \ 15 xmallctlbymib(mib, miblen, v, &sz, NULL, 0); \ 16} while (0) 17 18#define CTL_J_GET(n, v, t) do { \ 19 size_t mib[6]; \ 20 size_t miblen = sizeof(mib) / sizeof(size_t); \ 21 size_t sz = sizeof(t); \ 22 xmallctlnametomib(n, mib, &miblen); \ 23 mib[2] = j; \ 24 xmallctlbymib(mib, miblen, v, &sz, NULL, 0); \ 25} while (0) 26 27#define CTL_IJ_GET(n, v, t) do { \ 28 size_t mib[6]; \ 29 size_t miblen = sizeof(mib) / sizeof(size_t); \ 30 size_t sz = sizeof(t); \ 31 xmallctlnametomib(n, mib, &miblen); \ 32 mib[2] = i; \ 33 mib[4] = j; \ 34 xmallctlbymib(mib, miblen, v, &sz, NULL, 0); \ 35} while (0) 36 37/******************************************************************************/ 38/* Data. */ 39 40bool opt_stats_print = false; 41 42size_t stats_cactive = 0; 43 44/******************************************************************************/ 45/* Function prototypes for non-inline static functions. */ 46 47static void stats_arena_bins_print(void (*write_cb)(void *, const char *), 48 void *cbopaque, unsigned i); 49static void stats_arena_lruns_print(void (*write_cb)(void *, const char *), 50 void *cbopaque, unsigned i); 51static void stats_arena_print(void (*write_cb)(void *, const char *), 52 void *cbopaque, unsigned i, bool bins, bool large); 53 54/******************************************************************************/ 55 56static void 57stats_arena_bins_print(void (*write_cb)(void *, const char *), void *cbopaque, 58 unsigned i) 59{ 60 size_t page; 61 bool config_tcache; 62 unsigned nbins, j, gap_start; 63 64 CTL_GET("arenas.page", &page, size_t); 65 66 CTL_GET("config.tcache", &config_tcache, bool); 67 if (config_tcache) { 68 malloc_cprintf(write_cb, cbopaque, 69 "bins: bin size regs pgs allocated nmalloc" 70 " ndalloc nrequests nfills nflushes" 71 " newruns reruns curruns\n"); 72 } else { 73 malloc_cprintf(write_cb, cbopaque, 74 "bins: bin size regs pgs allocated nmalloc" 75 " ndalloc newruns reruns curruns\n"); 76 } 77 CTL_GET("arenas.nbins", &nbins, unsigned); 78 for (j = 0, gap_start = UINT_MAX; j < nbins; j++) { 79 uint64_t nruns; 80 81 CTL_IJ_GET("stats.arenas.0.bins.0.nruns", &nruns, uint64_t); 82 if (nruns == 0) { 83 if (gap_start == UINT_MAX) 84 gap_start = j; 85 } else { 86 size_t reg_size, run_size, allocated; 87 uint32_t nregs; 88 uint64_t nmalloc, ndalloc, nrequests, nfills, nflushes; 89 uint64_t reruns; 90 size_t curruns; 91 92 if (gap_start != UINT_MAX) { 93 if (j > gap_start + 1) { 94 /* Gap of more than one size class. */ 95 malloc_cprintf(write_cb, cbopaque, 96 "[%u..%u]\n", gap_start, 97 j - 1); 98 } else { 99 /* Gap of one size class. */ 100 malloc_cprintf(write_cb, cbopaque, 101 "[%u]\n", gap_start); 102 } 103 gap_start = UINT_MAX; 104 } 105 CTL_J_GET("arenas.bin.0.size", ®_size, size_t); 106 CTL_J_GET("arenas.bin.0.nregs", &nregs, uint32_t); 107 CTL_J_GET("arenas.bin.0.run_size", &run_size, size_t); 108 CTL_IJ_GET("stats.arenas.0.bins.0.allocated", 109 &allocated, size_t); 110 CTL_IJ_GET("stats.arenas.0.bins.0.nmalloc", 111 &nmalloc, uint64_t); 112 CTL_IJ_GET("stats.arenas.0.bins.0.ndalloc", 113 &ndalloc, uint64_t); 114 if (config_tcache) { 115 CTL_IJ_GET("stats.arenas.0.bins.0.nrequests", 116 &nrequests, uint64_t); 117 CTL_IJ_GET("stats.arenas.0.bins.0.nfills", 118 &nfills, uint64_t); 119 CTL_IJ_GET("stats.arenas.0.bins.0.nflushes", 120 &nflushes, uint64_t); 121 } 122 CTL_IJ_GET("stats.arenas.0.bins.0.nreruns", &reruns, 123 uint64_t); 124 CTL_IJ_GET("stats.arenas.0.bins.0.curruns", &curruns, 125 size_t); 126 if (config_tcache) { 127 malloc_cprintf(write_cb, cbopaque, 128 "%13u %5zu %4u %3zu %12zu %12"PRIu64 129 " %12"PRIu64" %12"PRIu64" %12"PRIu64 130 " %12"PRIu64" %12"PRIu64" %12"PRIu64 131 " %12zu\n", 132 j, reg_size, nregs, run_size / page, 133 allocated, nmalloc, ndalloc, nrequests, 134 nfills, nflushes, nruns, reruns, curruns); 135 } else { 136 malloc_cprintf(write_cb, cbopaque, 137 "%13u %5zu %4u %3zu %12zu %12"PRIu64 138 " %12"PRIu64" %12"PRIu64" %12"PRIu64 139 " %12zu\n", 140 j, reg_size, nregs, run_size / page, 141 allocated, nmalloc, ndalloc, nruns, reruns, 142 curruns); 143 } 144 } 145 } 146 if (gap_start != UINT_MAX) { 147 if (j > gap_start + 1) { 148 /* Gap of more than one size class. */ 149 malloc_cprintf(write_cb, cbopaque, "[%u..%u]\n", 150 gap_start, j - 1); 151 } else { 152 /* Gap of one size class. */ 153 malloc_cprintf(write_cb, cbopaque, "[%u]\n", gap_start); 154 } 155 } 156} 157 158static void 159stats_arena_lruns_print(void (*write_cb)(void *, const char *), void *cbopaque, 160 unsigned i) 161{ 162 size_t page, nlruns, j; 163 ssize_t gap_start; 164 165 CTL_GET("arenas.page", &page, size_t); 166 167 malloc_cprintf(write_cb, cbopaque, 168 "large: size pages nmalloc ndalloc nrequests" 169 " curruns\n"); 170 CTL_GET("arenas.nlruns", &nlruns, size_t); 171 for (j = 0, gap_start = -1; j < nlruns; j++) { 172 uint64_t nmalloc, ndalloc, nrequests; 173 size_t run_size, curruns; 174 175 CTL_IJ_GET("stats.arenas.0.lruns.0.nmalloc", &nmalloc, 176 uint64_t); 177 CTL_IJ_GET("stats.arenas.0.lruns.0.ndalloc", &ndalloc, 178 uint64_t); 179 CTL_IJ_GET("stats.arenas.0.lruns.0.nrequests", &nrequests, 180 uint64_t); 181 if (nrequests == 0) { 182 if (gap_start == -1) 183 gap_start = j; 184 } else { 185 CTL_J_GET("arenas.lrun.0.size", &run_size, size_t); 186 CTL_IJ_GET("stats.arenas.0.lruns.0.curruns", &curruns, 187 size_t); 188 if (gap_start != -1) { 189 malloc_cprintf(write_cb, cbopaque, "[%zu]\n", 190 j - gap_start); 191 gap_start = -1; 192 } 193 malloc_cprintf(write_cb, cbopaque, 194 "%13zu %5zu %12"PRIu64" %12"PRIu64" %12"PRIu64 195 " %12zu\n", 196 run_size, run_size / page, nmalloc, ndalloc, 197 nrequests, curruns); 198 } 199 } 200 if (gap_start != -1) 201 malloc_cprintf(write_cb, cbopaque, "[%zu]\n", j - gap_start); 202} 203 204static void 205stats_arena_print(void (*write_cb)(void *, const char *), void *cbopaque, 206 unsigned i, bool bins, bool large) 207{ 208 unsigned nthreads; 209 const char *dss; 210 size_t page, pactive, pdirty, mapped; 211 uint64_t npurge, nmadvise, purged; 212 size_t small_allocated; 213 uint64_t small_nmalloc, small_ndalloc, small_nrequests; 214 size_t large_allocated; 215 uint64_t large_nmalloc, large_ndalloc, large_nrequests; 216 217 CTL_GET("arenas.page", &page, size_t); 218 219 CTL_I_GET("stats.arenas.0.nthreads", &nthreads, unsigned); 220 malloc_cprintf(write_cb, cbopaque, 221 "assigned threads: %u\n", nthreads); 222 CTL_I_GET("stats.arenas.0.dss", &dss, const char *); 223 malloc_cprintf(write_cb, cbopaque, "dss allocation precedence: %s\n", 224 dss); 225 CTL_I_GET("stats.arenas.0.pactive", &pactive, size_t); 226 CTL_I_GET("stats.arenas.0.pdirty", &pdirty, size_t); 227 CTL_I_GET("stats.arenas.0.npurge", &npurge, uint64_t); 228 CTL_I_GET("stats.arenas.0.nmadvise", &nmadvise, uint64_t); 229 CTL_I_GET("stats.arenas.0.purged", &purged, uint64_t); 230 malloc_cprintf(write_cb, cbopaque, 231 "dirty pages: %zu:%zu active:dirty, %"PRIu64" sweep%s," 232 " %"PRIu64" madvise%s, %"PRIu64" purged\n", 233 pactive, pdirty, npurge, npurge == 1 ? "" : "s", 234 nmadvise, nmadvise == 1 ? "" : "s", purged); 235 236 malloc_cprintf(write_cb, cbopaque, 237 " allocated nmalloc ndalloc nrequests\n"); 238 CTL_I_GET("stats.arenas.0.small.allocated", &small_allocated, size_t); 239 CTL_I_GET("stats.arenas.0.small.nmalloc", &small_nmalloc, uint64_t); 240 CTL_I_GET("stats.arenas.0.small.ndalloc", &small_ndalloc, uint64_t); 241 CTL_I_GET("stats.arenas.0.small.nrequests", &small_nrequests, uint64_t); 242 malloc_cprintf(write_cb, cbopaque, 243 "small: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 244 small_allocated, small_nmalloc, small_ndalloc, small_nrequests); 245 CTL_I_GET("stats.arenas.0.large.allocated", &large_allocated, size_t); 246 CTL_I_GET("stats.arenas.0.large.nmalloc", &large_nmalloc, uint64_t); 247 CTL_I_GET("stats.arenas.0.large.ndalloc", &large_ndalloc, uint64_t); 248 CTL_I_GET("stats.arenas.0.large.nrequests", &large_nrequests, uint64_t); 249 malloc_cprintf(write_cb, cbopaque, 250 "large: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 251 large_allocated, large_nmalloc, large_ndalloc, large_nrequests); 252 malloc_cprintf(write_cb, cbopaque, 253 "total: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 254 small_allocated + large_allocated, 255 small_nmalloc + large_nmalloc, 256 small_ndalloc + large_ndalloc, 257 small_nrequests + large_nrequests); 258 malloc_cprintf(write_cb, cbopaque, "active: %12zu\n", pactive * page); 259 CTL_I_GET("stats.arenas.0.mapped", &mapped, size_t); 260 malloc_cprintf(write_cb, cbopaque, "mapped: %12zu\n", mapped); 261 262 if (bins) 263 stats_arena_bins_print(write_cb, cbopaque, i); 264 if (large) 265 stats_arena_lruns_print(write_cb, cbopaque, i); 266} 267 268void 269stats_print(void (*write_cb)(void *, const char *), void *cbopaque, 270 const char *opts) 271{ 272 int err; 273 uint64_t epoch; 274 size_t u64sz; 275 bool general = true; 276 bool merged = true; 277 bool unmerged = true; 278 bool bins = true; 279 bool large = true; 280 281 /* 282 * Refresh stats, in case mallctl() was called by the application. 283 * 284 * Check for OOM here, since refreshing the ctl cache can trigger 285 * allocation. In practice, none of the subsequent mallctl()-related 286 * calls in this function will cause OOM if this one succeeds. 287 * */ 288 epoch = 1; 289 u64sz = sizeof(uint64_t); 290 err = je_mallctl("epoch", &epoch, &u64sz, &epoch, sizeof(uint64_t)); 291 if (err != 0) { 292 if (err == EAGAIN) { 293 malloc_write("<jemalloc>: Memory allocation failure in " 294 "mallctl(\"epoch\", ...)\n"); 295 return; 296 } 297 malloc_write("<jemalloc>: Failure in mallctl(\"epoch\", " 298 "...)\n"); 299 abort(); 300 } 301 302 if (opts != NULL) { 303 unsigned i; 304 305 for (i = 0; opts[i] != '\0'; i++) { 306 switch (opts[i]) { 307 case 'g': 308 general = false; 309 break; 310 case 'm': 311 merged = false; 312 break; 313 case 'a': 314 unmerged = false; 315 break; 316 case 'b': 317 bins = false; 318 break; 319 case 'l': 320 large = false; 321 break; 322 default:; 323 } 324 } 325 } 326 327 malloc_cprintf(write_cb, cbopaque, 328 "___ Begin jemalloc statistics ___\n"); 329 if (general) { 330 int err; 331 const char *cpv; 332 bool bv; 333 unsigned uv; 334 ssize_t ssv; 335 size_t sv, bsz, ssz, sssz, cpsz; 336 337 bsz = sizeof(bool); 338 ssz = sizeof(size_t); 339 sssz = sizeof(ssize_t); 340 cpsz = sizeof(const char *); 341 342 CTL_GET("version", &cpv, const char *); 343 malloc_cprintf(write_cb, cbopaque, "Version: %s\n", cpv); 344 CTL_GET("config.debug", &bv, bool); 345 malloc_cprintf(write_cb, cbopaque, "Assertions %s\n", 346 bv ? "enabled" : "disabled"); 347 348#define OPT_WRITE_BOOL(n) \ 349 if ((err = je_mallctl("opt."#n, &bv, &bsz, NULL, 0)) \ 350 == 0) { \ 351 malloc_cprintf(write_cb, cbopaque, \ 352 " opt."#n": %s\n", bv ? "true" : "false"); \ 353 } 354#define OPT_WRITE_SIZE_T(n) \ 355 if ((err = je_mallctl("opt."#n, &sv, &ssz, NULL, 0)) \ 356 == 0) { \ 357 malloc_cprintf(write_cb, cbopaque, \ 358 " opt."#n": %zu\n", sv); \ 359 } 360#define OPT_WRITE_SSIZE_T(n) \ 361 if ((err = je_mallctl("opt."#n, &ssv, &sssz, NULL, 0)) \ 362 == 0) { \ 363 malloc_cprintf(write_cb, cbopaque, \ 364 " opt."#n": %zd\n", ssv); \ 365 } 366#define OPT_WRITE_CHAR_P(n) \ 367 if ((err = je_mallctl("opt."#n, &cpv, &cpsz, NULL, 0)) \ 368 == 0) { \ 369 malloc_cprintf(write_cb, cbopaque, \ 370 " opt."#n": \"%s\"\n", cpv); \ 371 } 372 373 malloc_cprintf(write_cb, cbopaque, 374 "Run-time option settings:\n"); 375 OPT_WRITE_BOOL(abort) 376 OPT_WRITE_SIZE_T(lg_chunk) 377 OPT_WRITE_CHAR_P(dss) 378 OPT_WRITE_SIZE_T(narenas) 379 OPT_WRITE_SSIZE_T(lg_dirty_mult) 380 OPT_WRITE_BOOL(stats_print) 381 OPT_WRITE_BOOL(junk) 382 OPT_WRITE_SIZE_T(quarantine) 383 OPT_WRITE_BOOL(redzone) 384 OPT_WRITE_BOOL(zero) 385 OPT_WRITE_BOOL(utrace) 386 OPT_WRITE_BOOL(valgrind) 387 OPT_WRITE_BOOL(xmalloc) 388 OPT_WRITE_BOOL(tcache) 389 OPT_WRITE_SSIZE_T(lg_tcache_max) 390 OPT_WRITE_BOOL(prof) 391 OPT_WRITE_CHAR_P(prof_prefix) 392 OPT_WRITE_BOOL(prof_active) 393 OPT_WRITE_SSIZE_T(lg_prof_sample) 394 OPT_WRITE_BOOL(prof_accum) 395 OPT_WRITE_SSIZE_T(lg_prof_interval) 396 OPT_WRITE_BOOL(prof_gdump) 397 OPT_WRITE_BOOL(prof_final) 398 OPT_WRITE_BOOL(prof_leak) 399 400#undef OPT_WRITE_BOOL 401#undef OPT_WRITE_SIZE_T 402#undef OPT_WRITE_SSIZE_T 403#undef OPT_WRITE_CHAR_P 404 405 malloc_cprintf(write_cb, cbopaque, "CPUs: %u\n", ncpus); 406 407 CTL_GET("arenas.narenas", &uv, unsigned); 408 malloc_cprintf(write_cb, cbopaque, "Arenas: %u\n", uv); 409 410 malloc_cprintf(write_cb, cbopaque, "Pointer size: %zu\n", 411 sizeof(void *)); 412 413 CTL_GET("arenas.quantum", &sv, size_t); 414 malloc_cprintf(write_cb, cbopaque, "Quantum size: %zu\n", sv); 415 416 CTL_GET("arenas.page", &sv, size_t); 417 malloc_cprintf(write_cb, cbopaque, "Page size: %zu\n", sv); 418 419 CTL_GET("opt.lg_dirty_mult", &ssv, ssize_t); 420 if (ssv >= 0) { 421 malloc_cprintf(write_cb, cbopaque, 422 "Min active:dirty page ratio per arena: %u:1\n", 423 (1U << ssv)); 424 } else { 425 malloc_cprintf(write_cb, cbopaque, 426 "Min active:dirty page ratio per arena: N/A\n"); 427 } 428 if ((err = je_mallctl("arenas.tcache_max", &sv, &ssz, NULL, 0)) 429 == 0) { 430 malloc_cprintf(write_cb, cbopaque, 431 "Maximum thread-cached size class: %zu\n", sv); 432 } 433 if ((err = je_mallctl("opt.prof", &bv, &bsz, NULL, 0)) == 0 && 434 bv) { 435 CTL_GET("opt.lg_prof_sample", &sv, size_t); 436 malloc_cprintf(write_cb, cbopaque, 437 "Average profile sample interval: %"PRIu64 438 " (2^%zu)\n", (((uint64_t)1U) << sv), sv); 439 440 CTL_GET("opt.lg_prof_interval", &ssv, ssize_t); 441 if (ssv >= 0) { 442 malloc_cprintf(write_cb, cbopaque, 443 "Average profile dump interval: %"PRIu64 444 " (2^%zd)\n", 445 (((uint64_t)1U) << ssv), ssv); 446 } else { 447 malloc_cprintf(write_cb, cbopaque, 448 "Average profile dump interval: N/A\n"); 449 } 450 } 451 CTL_GET("opt.lg_chunk", &sv, size_t); 452 malloc_cprintf(write_cb, cbopaque, "Chunk size: %zu (2^%zu)\n", 453 (ZU(1) << sv), sv); 454 } 455 456 if (config_stats) { 457 size_t *cactive; 458 size_t allocated, active, mapped; 459 size_t chunks_current, chunks_high; 460 uint64_t chunks_total; 461 size_t huge_allocated; 462 uint64_t huge_nmalloc, huge_ndalloc; 463 464 CTL_GET("stats.cactive", &cactive, size_t *); 465 CTL_GET("stats.allocated", &allocated, size_t); 466 CTL_GET("stats.active", &active, size_t); 467 CTL_GET("stats.mapped", &mapped, size_t); 468 malloc_cprintf(write_cb, cbopaque, 469 "Allocated: %zu, active: %zu, mapped: %zu\n", 470 allocated, active, mapped); 471 malloc_cprintf(write_cb, cbopaque, 472 "Current active ceiling: %zu\n", atomic_read_z(cactive)); 473 474 /* Print chunk stats. */ 475 CTL_GET("stats.chunks.total", &chunks_total, uint64_t); 476 CTL_GET("stats.chunks.high", &chunks_high, size_t); 477 CTL_GET("stats.chunks.current", &chunks_current, size_t); 478 malloc_cprintf(write_cb, cbopaque, "chunks: nchunks " 479 "highchunks curchunks\n"); 480 malloc_cprintf(write_cb, cbopaque, 481 " %13"PRIu64" %12zu %12zu\n", 482 chunks_total, chunks_high, chunks_current); 483 484 /* Print huge stats. */ 485 CTL_GET("stats.huge.nmalloc", &huge_nmalloc, uint64_t); 486 CTL_GET("stats.huge.ndalloc", &huge_ndalloc, uint64_t); 487 CTL_GET("stats.huge.allocated", &huge_allocated, size_t); 488 malloc_cprintf(write_cb, cbopaque, 489 "huge: nmalloc ndalloc allocated\n"); 490 malloc_cprintf(write_cb, cbopaque, 491 " %12"PRIu64" %12"PRIu64" %12zu\n", 492 huge_nmalloc, huge_ndalloc, huge_allocated); 493 494 if (merged) { 495 unsigned narenas; 496 497 CTL_GET("arenas.narenas", &narenas, unsigned); 498 { 499 VARIABLE_ARRAY(bool, initialized, narenas); 500 size_t isz; 501 unsigned i, ninitialized; 502 503 isz = sizeof(bool) * narenas; 504 xmallctl("arenas.initialized", initialized, 505 &isz, NULL, 0); 506 for (i = ninitialized = 0; i < narenas; i++) { 507 if (initialized[i]) 508 ninitialized++; 509 } 510 511 if (ninitialized > 1 || unmerged == false) { 512 /* Print merged arena stats. */ 513 malloc_cprintf(write_cb, cbopaque, 514 "\nMerged arenas stats:\n"); 515 stats_arena_print(write_cb, cbopaque, 516 narenas, bins, large); 517 } 518 } 519 } 520 521 if (unmerged) { 522 unsigned narenas; 523 524 /* Print stats for each arena. */ 525 526 CTL_GET("arenas.narenas", &narenas, unsigned); 527 { 528 VARIABLE_ARRAY(bool, initialized, narenas); 529 size_t isz; 530 unsigned i; 531 532 isz = sizeof(bool) * narenas; 533 xmallctl("arenas.initialized", initialized, 534 &isz, NULL, 0); 535 536 for (i = 0; i < narenas; i++) { 537 if (initialized[i]) { 538 malloc_cprintf(write_cb, 539 cbopaque, 540 "\narenas[%u]:\n", i); 541 stats_arena_print(write_cb, 542 cbopaque, i, bins, large); 543 } 544 } 545 } 546 } 547 } 548 malloc_cprintf(write_cb, cbopaque, "--- End jemalloc statistics ---\n"); 549} 550