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 40 bool opt_stats_print = false; 41 42 size_t stats_cactive = 0; 43 44 /******************************************************************************/ 45 /* Function prototypes for non-inline static functions. */ 46 47 static void stats_arena_bins_print(void (*write_cb)(void *, const char *), 48 void *cbopaque, unsigned i); 49 static void stats_arena_lruns_print(void (*write_cb)(void *, const char *), 50 void *cbopaque, unsigned i); 51 static void stats_arena_print(void (*write_cb)(void *, const char *), 52 void *cbopaque, unsigned i, bool bins, bool large); 53 54 /******************************************************************************/ 55 56 static void 57 stats_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 } 157 158 static void 159 stats_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 } 203 204 static void 205 stats_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 size_t huge_allocated; 217 uint64_t huge_nmalloc, huge_ndalloc, huge_nrequests; 218 219 CTL_GET("arenas.page", &page, size_t); 220 221 CTL_I_GET("stats.arenas.0.nthreads", &nthreads, unsigned); 222 malloc_cprintf(write_cb, cbopaque, 223 "assigned threads: %u\n", nthreads); 224 CTL_I_GET("stats.arenas.0.dss", &dss, const char *); 225 malloc_cprintf(write_cb, cbopaque, "dss allocation precedence: %s\n", 226 dss); 227 CTL_I_GET("stats.arenas.0.pactive", &pactive, size_t); 228 CTL_I_GET("stats.arenas.0.pdirty", &pdirty, size_t); 229 CTL_I_GET("stats.arenas.0.npurge", &npurge, uint64_t); 230 CTL_I_GET("stats.arenas.0.nmadvise", &nmadvise, uint64_t); 231 CTL_I_GET("stats.arenas.0.purged", &purged, uint64_t); 232 malloc_cprintf(write_cb, cbopaque, 233 "dirty pages: %zu:%zu active:dirty, %"PRIu64" sweep%s," 234 " %"PRIu64" madvise%s, %"PRIu64" purged\n", 235 pactive, pdirty, npurge, npurge == 1 ? "" : "s", 236 nmadvise, nmadvise == 1 ? "" : "s", purged); 237 238 malloc_cprintf(write_cb, cbopaque, 239 " allocated nmalloc ndalloc nrequests\n"); 240 CTL_I_GET("stats.arenas.0.small.allocated", &small_allocated, size_t); 241 CTL_I_GET("stats.arenas.0.small.nmalloc", &small_nmalloc, uint64_t); 242 CTL_I_GET("stats.arenas.0.small.ndalloc", &small_ndalloc, uint64_t); 243 CTL_I_GET("stats.arenas.0.small.nrequests", &small_nrequests, uint64_t); 244 malloc_cprintf(write_cb, cbopaque, 245 "small: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 246 small_allocated, small_nmalloc, small_ndalloc, small_nrequests); 247 CTL_I_GET("stats.arenas.0.large.allocated", &large_allocated, size_t); 248 CTL_I_GET("stats.arenas.0.large.nmalloc", &large_nmalloc, uint64_t); 249 CTL_I_GET("stats.arenas.0.large.ndalloc", &large_ndalloc, uint64_t); 250 CTL_I_GET("stats.arenas.0.large.nrequests", &large_nrequests, uint64_t); 251 malloc_cprintf(write_cb, cbopaque, 252 "large: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 253 large_allocated, large_nmalloc, large_ndalloc, large_nrequests); 254 CTL_I_GET("stats.arenas.0.huge.allocated", &huge_allocated, size_t); 255 CTL_I_GET("stats.arenas.0.huge.nmalloc", &huge_nmalloc, uint64_t); 256 CTL_I_GET("stats.arenas.0.huge.ndalloc", &huge_ndalloc, uint64_t); 257 CTL_I_GET("stats.arenas.0.huge.nrequests", &huge_nrequests, uint64_t); 258 malloc_cprintf(write_cb, cbopaque, 259 "huge: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 260 huge_allocated, huge_nmalloc, huge_ndalloc, huge_nrequests); 261 malloc_cprintf(write_cb, cbopaque, 262 "total: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n", 263 small_allocated + large_allocated + huge_allocated, 264 small_nmalloc + large_nmalloc + huge_nmalloc, 265 small_ndalloc + large_ndalloc + huge_ndalloc, 266 small_nrequests + large_nrequests + huge_nrequests); 267 malloc_cprintf(write_cb, cbopaque, "active: %12zu\n", pactive * page); 268 CTL_I_GET("stats.arenas.0.mapped", &mapped, size_t); 269 malloc_cprintf(write_cb, cbopaque, "mapped: %12zu\n", mapped); 270 271 if (bins) 272 stats_arena_bins_print(write_cb, cbopaque, i); 273 if (large) 274 stats_arena_lruns_print(write_cb, cbopaque, i); 275 } 276 277 void 278 stats_print(void (*write_cb)(void *, const char *), void *cbopaque, 279 const char *opts) 280 { 281 int err; 282 uint64_t epoch; 283 size_t u64sz; 284 bool general = true; 285 bool merged = true; 286 bool unmerged = true; 287 bool bins = true; 288 bool large = true; 289 290 /* 291 * Refresh stats, in case mallctl() was called by the application. 292 * 293 * Check for OOM here, since refreshing the ctl cache can trigger 294 * allocation. In practice, none of the subsequent mallctl()-related 295 * calls in this function will cause OOM if this one succeeds. 296 * */ 297 epoch = 1; 298 u64sz = sizeof(uint64_t); 299 err = je_mallctl("epoch", &epoch, &u64sz, &epoch, sizeof(uint64_t)); 300 if (err != 0) { 301 if (err == EAGAIN) { 302 malloc_write("<jemalloc>: Memory allocation failure in " 303 "mallctl(\"epoch\", ...)\n"); 304 return; 305 } 306 malloc_write("<jemalloc>: Failure in mallctl(\"epoch\", " 307 "...)\n"); 308 abort(); 309 } 310 311 if (opts != NULL) { 312 unsigned i; 313 314 for (i = 0; opts[i] != '\0'; i++) { 315 switch (opts[i]) { 316 case 'g': 317 general = false; 318 break; 319 case 'm': 320 merged = false; 321 break; 322 case 'a': 323 unmerged = false; 324 break; 325 case 'b': 326 bins = false; 327 break; 328 case 'l': 329 large = false; 330 break; 331 default:; 332 } 333 } 334 } 335 336 malloc_cprintf(write_cb, cbopaque, 337 "___ Begin jemalloc statistics ___\n"); 338 if (general) { 339 int err; 340 const char *cpv; 341 bool bv; 342 unsigned uv; 343 ssize_t ssv; 344 size_t sv, bsz, ssz, sssz, cpsz; 345 346 bsz = sizeof(bool); 347 ssz = sizeof(size_t); 348 sssz = sizeof(ssize_t); 349 cpsz = sizeof(const char *); 350 351 CTL_GET("version", &cpv, const char *); 352 malloc_cprintf(write_cb, cbopaque, "Version: %s\n", cpv); 353 CTL_GET("config.debug", &bv, bool); 354 malloc_cprintf(write_cb, cbopaque, "Assertions %s\n", 355 bv ? "enabled" : "disabled"); 356 357 #define OPT_WRITE_BOOL(n) \ 358 if ((err = je_mallctl("opt."#n, &bv, &bsz, NULL, 0)) \ 359 == 0) { \ 360 malloc_cprintf(write_cb, cbopaque, \ 361 " opt."#n": %s\n", bv ? "true" : "false"); \ 362 } 363 #define OPT_WRITE_SIZE_T(n) \ 364 if ((err = je_mallctl("opt."#n, &sv, &ssz, NULL, 0)) \ 365 == 0) { \ 366 malloc_cprintf(write_cb, cbopaque, \ 367 " opt."#n": %zu\n", sv); \ 368 } 369 #define OPT_WRITE_SSIZE_T(n) \ 370 if ((err = je_mallctl("opt."#n, &ssv, &sssz, NULL, 0)) \ 371 == 0) { \ 372 malloc_cprintf(write_cb, cbopaque, \ 373 " opt."#n": %zd\n", ssv); \ 374 } 375 #define OPT_WRITE_CHAR_P(n) \ 376 if ((err = je_mallctl("opt."#n, &cpv, &cpsz, NULL, 0)) \ 377 == 0) { \ 378 malloc_cprintf(write_cb, cbopaque, \ 379 " opt."#n": \"%s\"\n", cpv); \ 380 } 381 382 malloc_cprintf(write_cb, cbopaque, 383 "Run-time option settings:\n"); 384 OPT_WRITE_BOOL(abort) 385 OPT_WRITE_SIZE_T(lg_chunk) 386 OPT_WRITE_CHAR_P(dss) 387 OPT_WRITE_SIZE_T(narenas) 388 OPT_WRITE_SSIZE_T(lg_dirty_mult) 389 OPT_WRITE_BOOL(stats_print) 390 OPT_WRITE_BOOL(junk) 391 OPT_WRITE_SIZE_T(quarantine) 392 OPT_WRITE_BOOL(redzone) 393 OPT_WRITE_BOOL(zero) 394 OPT_WRITE_BOOL(utrace) 395 OPT_WRITE_BOOL(valgrind) 396 OPT_WRITE_BOOL(xmalloc) 397 OPT_WRITE_BOOL(tcache) 398 OPT_WRITE_SSIZE_T(lg_tcache_max) 399 OPT_WRITE_BOOL(prof) 400 OPT_WRITE_CHAR_P(prof_prefix) 401 OPT_WRITE_BOOL(prof_active) 402 OPT_WRITE_SSIZE_T(lg_prof_sample) 403 OPT_WRITE_BOOL(prof_accum) 404 OPT_WRITE_SSIZE_T(lg_prof_interval) 405 OPT_WRITE_BOOL(prof_gdump) 406 OPT_WRITE_BOOL(prof_final) 407 OPT_WRITE_BOOL(prof_leak) 408 409 #undef OPT_WRITE_BOOL 410 #undef OPT_WRITE_SIZE_T 411 #undef OPT_WRITE_SSIZE_T 412 #undef OPT_WRITE_CHAR_P 413 414 malloc_cprintf(write_cb, cbopaque, "CPUs: %u\n", ncpus); 415 416 CTL_GET("arenas.narenas", &uv, unsigned); 417 malloc_cprintf(write_cb, cbopaque, "Arenas: %u\n", uv); 418 419 malloc_cprintf(write_cb, cbopaque, "Pointer size: %zu\n", 420 sizeof(void *)); 421 422 CTL_GET("arenas.quantum", &sv, size_t); 423 malloc_cprintf(write_cb, cbopaque, "Quantum size: %zu\n", sv); 424 425 CTL_GET("arenas.page", &sv, size_t); 426 malloc_cprintf(write_cb, cbopaque, "Page size: %zu\n", sv); 427 428 CTL_GET("opt.lg_dirty_mult", &ssv, ssize_t); 429 if (ssv >= 0) { 430 malloc_cprintf(write_cb, cbopaque, 431 "Min active:dirty page ratio per arena: %u:1\n", 432 (1U << ssv)); 433 } else { 434 malloc_cprintf(write_cb, cbopaque, 435 "Min active:dirty page ratio per arena: N/A\n"); 436 } 437 if ((err = je_mallctl("arenas.tcache_max", &sv, &ssz, NULL, 0)) 438 == 0) { 439 malloc_cprintf(write_cb, cbopaque, 440 "Maximum thread-cached size class: %zu\n", sv); 441 } 442 if ((err = je_mallctl("opt.prof", &bv, &bsz, NULL, 0)) == 0 && 443 bv) { 444 CTL_GET("opt.lg_prof_sample", &sv, size_t); 445 malloc_cprintf(write_cb, cbopaque, 446 "Average profile sample interval: %"PRIu64 447 " (2^%zu)\n", (((uint64_t)1U) << sv), sv); 448 449 CTL_GET("opt.lg_prof_interval", &ssv, ssize_t); 450 if (ssv >= 0) { 451 malloc_cprintf(write_cb, cbopaque, 452 "Average profile dump interval: %"PRIu64 453 " (2^%zd)\n", 454 (((uint64_t)1U) << ssv), ssv); 455 } else { 456 malloc_cprintf(write_cb, cbopaque, 457 "Average profile dump interval: N/A\n"); 458 } 459 } 460 CTL_GET("opt.lg_chunk", &sv, size_t); 461 malloc_cprintf(write_cb, cbopaque, "Chunk size: %zu (2^%zu)\n", 462 (ZU(1) << sv), sv); 463 } 464 465 if (config_stats) { 466 size_t *cactive; 467 size_t allocated, active, mapped; 468 size_t chunks_current, chunks_high; 469 uint64_t chunks_total; 470 471 CTL_GET("stats.cactive", &cactive, size_t *); 472 CTL_GET("stats.allocated", &allocated, size_t); 473 CTL_GET("stats.active", &active, size_t); 474 CTL_GET("stats.mapped", &mapped, size_t); 475 malloc_cprintf(write_cb, cbopaque, 476 "Allocated: %zu, active: %zu, mapped: %zu\n", 477 allocated, active, mapped); 478 malloc_cprintf(write_cb, cbopaque, 479 "Current active ceiling: %zu\n", atomic_read_z(cactive)); 480 481 /* Print chunk stats. */ 482 CTL_GET("stats.chunks.total", &chunks_total, uint64_t); 483 CTL_GET("stats.chunks.high", &chunks_high, size_t); 484 CTL_GET("stats.chunks.current", &chunks_current, size_t); 485 malloc_cprintf(write_cb, cbopaque, "chunks: nchunks " 486 "highchunks curchunks\n"); 487 malloc_cprintf(write_cb, cbopaque, 488 " %13"PRIu64" %12zu %12zu\n", 489 chunks_total, chunks_high, chunks_current); 490 491 if (merged) { 492 unsigned narenas; 493 494 CTL_GET("arenas.narenas", &narenas, unsigned); 495 { 496 VARIABLE_ARRAY(bool, initialized, narenas); 497 size_t isz; 498 unsigned i, ninitialized; 499 500 isz = sizeof(bool) * narenas; 501 xmallctl("arenas.initialized", initialized, 502 &isz, NULL, 0); 503 for (i = ninitialized = 0; i < narenas; i++) { 504 if (initialized[i]) 505 ninitialized++; 506 } 507 508 if (ninitialized > 1 || unmerged == false) { 509 /* Print merged arena stats. */ 510 malloc_cprintf(write_cb, cbopaque, 511 "\nMerged arenas stats:\n"); 512 stats_arena_print(write_cb, cbopaque, 513 narenas, bins, large); 514 } 515 } 516 } 517 518 if (unmerged) { 519 unsigned narenas; 520 521 /* Print stats for each arena. */ 522 523 CTL_GET("arenas.narenas", &narenas, unsigned); 524 { 525 VARIABLE_ARRAY(bool, initialized, narenas); 526 size_t isz; 527 unsigned i; 528 529 isz = sizeof(bool) * narenas; 530 xmallctl("arenas.initialized", initialized, 531 &isz, NULL, 0); 532 533 for (i = 0; i < narenas; i++) { 534 if (initialized[i]) { 535 malloc_cprintf(write_cb, 536 cbopaque, 537 "\narenas[%u]:\n", i); 538 stats_arena_print(write_cb, 539 cbopaque, i, bins, large); 540 } 541 } 542 } 543 } 544 } 545 malloc_cprintf(write_cb, cbopaque, "--- End jemalloc statistics ---\n"); 546 } 547
