mirror of
https://github.com/jemalloc/jemalloc.git
synced 2026-07-22 12:15:07 +00:00
609ae595f0
Add the "arenas.extend" mallctl, so that it is possible to create new
arenas that are outside the set that jemalloc automatically multiplexes
threads onto.
Add the ALLOCM_ARENA() flag for {,r,d}allocm(), so that it is possible
to explicitly allocate from a particular arena.
Add the "opt.dss" mallctl, which controls the default precedence of dss
allocation relative to mmap allocation.
Add the "arena.<i>.dss" mallctl, which makes it possible to set the
default dss precedence on a per arena or global basis.
Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge".
Add the "stats.arenas.<i>.dss" mallctl.
550 lines
16 KiB
C
550 lines
16 KiB
C
#define JEMALLOC_STATS_C_
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#include "jemalloc/internal/jemalloc_internal.h"
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#define CTL_GET(n, v, t) do { \
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size_t sz = sizeof(t); \
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xmallctl(n, v, &sz, NULL, 0); \
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} while (0)
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#define CTL_I_GET(n, v, t) do { \
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size_t mib[6]; \
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size_t miblen = sizeof(mib) / sizeof(size_t); \
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size_t sz = sizeof(t); \
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xmallctlnametomib(n, mib, &miblen); \
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mib[2] = i; \
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xmallctlbymib(mib, miblen, v, &sz, NULL, 0); \
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} while (0)
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#define CTL_J_GET(n, v, t) do { \
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size_t mib[6]; \
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size_t miblen = sizeof(mib) / sizeof(size_t); \
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size_t sz = sizeof(t); \
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xmallctlnametomib(n, mib, &miblen); \
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mib[2] = j; \
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xmallctlbymib(mib, miblen, v, &sz, NULL, 0); \
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} while (0)
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#define CTL_IJ_GET(n, v, t) do { \
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size_t mib[6]; \
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size_t miblen = sizeof(mib) / sizeof(size_t); \
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size_t sz = sizeof(t); \
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xmallctlnametomib(n, mib, &miblen); \
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mib[2] = i; \
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mib[4] = j; \
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xmallctlbymib(mib, miblen, v, &sz, NULL, 0); \
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} while (0)
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/******************************************************************************/
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/* Data. */
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bool opt_stats_print = false;
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size_t stats_cactive = 0;
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/******************************************************************************/
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/* Function prototypes for non-inline static functions. */
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static void stats_arena_bins_print(void (*write_cb)(void *, const char *),
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void *cbopaque, unsigned i);
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static void stats_arena_lruns_print(void (*write_cb)(void *, const char *),
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void *cbopaque, unsigned i);
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static void stats_arena_print(void (*write_cb)(void *, const char *),
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void *cbopaque, unsigned i, bool bins, bool large);
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/******************************************************************************/
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static void
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stats_arena_bins_print(void (*write_cb)(void *, const char *), void *cbopaque,
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unsigned i)
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{
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size_t page;
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bool config_tcache;
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unsigned nbins, j, gap_start;
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CTL_GET("arenas.page", &page, size_t);
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CTL_GET("config.tcache", &config_tcache, bool);
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if (config_tcache) {
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malloc_cprintf(write_cb, cbopaque,
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"bins: bin size regs pgs allocated nmalloc"
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" ndalloc nrequests nfills nflushes"
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" newruns reruns curruns\n");
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} else {
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malloc_cprintf(write_cb, cbopaque,
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"bins: bin size regs pgs allocated nmalloc"
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" ndalloc newruns reruns curruns\n");
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}
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CTL_GET("arenas.nbins", &nbins, unsigned);
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for (j = 0, gap_start = UINT_MAX; j < nbins; j++) {
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uint64_t nruns;
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CTL_IJ_GET("stats.arenas.0.bins.0.nruns", &nruns, uint64_t);
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if (nruns == 0) {
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if (gap_start == UINT_MAX)
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gap_start = j;
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} else {
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size_t reg_size, run_size, allocated;
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uint32_t nregs;
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uint64_t nmalloc, ndalloc, nrequests, nfills, nflushes;
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uint64_t reruns;
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size_t curruns;
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if (gap_start != UINT_MAX) {
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if (j > gap_start + 1) {
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/* Gap of more than one size class. */
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malloc_cprintf(write_cb, cbopaque,
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"[%u..%u]\n", gap_start,
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j - 1);
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} else {
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/* Gap of one size class. */
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malloc_cprintf(write_cb, cbopaque,
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"[%u]\n", gap_start);
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}
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gap_start = UINT_MAX;
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}
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CTL_J_GET("arenas.bin.0.size", ®_size, size_t);
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CTL_J_GET("arenas.bin.0.nregs", &nregs, uint32_t);
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CTL_J_GET("arenas.bin.0.run_size", &run_size, size_t);
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CTL_IJ_GET("stats.arenas.0.bins.0.allocated",
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&allocated, size_t);
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CTL_IJ_GET("stats.arenas.0.bins.0.nmalloc",
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&nmalloc, uint64_t);
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CTL_IJ_GET("stats.arenas.0.bins.0.ndalloc",
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&ndalloc, uint64_t);
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if (config_tcache) {
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CTL_IJ_GET("stats.arenas.0.bins.0.nrequests",
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&nrequests, uint64_t);
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CTL_IJ_GET("stats.arenas.0.bins.0.nfills",
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&nfills, uint64_t);
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CTL_IJ_GET("stats.arenas.0.bins.0.nflushes",
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&nflushes, uint64_t);
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}
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CTL_IJ_GET("stats.arenas.0.bins.0.nreruns", &reruns,
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uint64_t);
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CTL_IJ_GET("stats.arenas.0.bins.0.curruns", &curruns,
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size_t);
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if (config_tcache) {
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malloc_cprintf(write_cb, cbopaque,
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"%13u %5zu %4u %3zu %12zu %12"PRIu64
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" %12"PRIu64" %12"PRIu64" %12"PRIu64
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" %12"PRIu64" %12"PRIu64" %12"PRIu64
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" %12zu\n",
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j, reg_size, nregs, run_size / page,
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allocated, nmalloc, ndalloc, nrequests,
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nfills, nflushes, nruns, reruns, curruns);
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} else {
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malloc_cprintf(write_cb, cbopaque,
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"%13u %5zu %4u %3zu %12zu %12"PRIu64
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" %12"PRIu64" %12"PRIu64" %12"PRIu64
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" %12zu\n",
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j, reg_size, nregs, run_size / page,
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allocated, nmalloc, ndalloc, nruns, reruns,
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curruns);
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}
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}
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}
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if (gap_start != UINT_MAX) {
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if (j > gap_start + 1) {
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/* Gap of more than one size class. */
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malloc_cprintf(write_cb, cbopaque, "[%u..%u]\n",
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gap_start, j - 1);
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} else {
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/* Gap of one size class. */
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malloc_cprintf(write_cb, cbopaque, "[%u]\n", gap_start);
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}
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}
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}
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static void
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stats_arena_lruns_print(void (*write_cb)(void *, const char *), void *cbopaque,
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unsigned i)
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{
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size_t page, nlruns, j;
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ssize_t gap_start;
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CTL_GET("arenas.page", &page, size_t);
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malloc_cprintf(write_cb, cbopaque,
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"large: size pages nmalloc ndalloc nrequests"
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" curruns\n");
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CTL_GET("arenas.nlruns", &nlruns, size_t);
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for (j = 0, gap_start = -1; j < nlruns; j++) {
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uint64_t nmalloc, ndalloc, nrequests;
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size_t run_size, curruns;
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CTL_IJ_GET("stats.arenas.0.lruns.0.nmalloc", &nmalloc,
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uint64_t);
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CTL_IJ_GET("stats.arenas.0.lruns.0.ndalloc", &ndalloc,
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uint64_t);
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CTL_IJ_GET("stats.arenas.0.lruns.0.nrequests", &nrequests,
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uint64_t);
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if (nrequests == 0) {
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if (gap_start == -1)
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gap_start = j;
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} else {
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CTL_J_GET("arenas.lrun.0.size", &run_size, size_t);
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CTL_IJ_GET("stats.arenas.0.lruns.0.curruns", &curruns,
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size_t);
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if (gap_start != -1) {
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malloc_cprintf(write_cb, cbopaque, "[%zu]\n",
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j - gap_start);
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gap_start = -1;
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}
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malloc_cprintf(write_cb, cbopaque,
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"%13zu %5zu %12"PRIu64" %12"PRIu64" %12"PRIu64
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" %12zu\n",
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run_size, run_size / page, nmalloc, ndalloc,
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nrequests, curruns);
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}
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}
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if (gap_start != -1)
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malloc_cprintf(write_cb, cbopaque, "[%zu]\n", j - gap_start);
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}
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static void
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stats_arena_print(void (*write_cb)(void *, const char *), void *cbopaque,
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unsigned i, bool bins, bool large)
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{
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unsigned nthreads;
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const char *dss;
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size_t page, pactive, pdirty, mapped;
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uint64_t npurge, nmadvise, purged;
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size_t small_allocated;
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uint64_t small_nmalloc, small_ndalloc, small_nrequests;
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size_t large_allocated;
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uint64_t large_nmalloc, large_ndalloc, large_nrequests;
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CTL_GET("arenas.page", &page, size_t);
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CTL_I_GET("stats.arenas.0.nthreads", &nthreads, unsigned);
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malloc_cprintf(write_cb, cbopaque,
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"assigned threads: %u\n", nthreads);
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CTL_I_GET("stats.arenas.0.dss", &dss, const char *);
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malloc_cprintf(write_cb, cbopaque, "dss allocation precedence: %s\n",
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dss);
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CTL_I_GET("stats.arenas.0.pactive", &pactive, size_t);
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CTL_I_GET("stats.arenas.0.pdirty", &pdirty, size_t);
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CTL_I_GET("stats.arenas.0.npurge", &npurge, uint64_t);
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CTL_I_GET("stats.arenas.0.nmadvise", &nmadvise, uint64_t);
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CTL_I_GET("stats.arenas.0.purged", &purged, uint64_t);
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malloc_cprintf(write_cb, cbopaque,
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"dirty pages: %zu:%zu active:dirty, %"PRIu64" sweep%s,"
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" %"PRIu64" madvise%s, %"PRIu64" purged\n",
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pactive, pdirty, npurge, npurge == 1 ? "" : "s",
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nmadvise, nmadvise == 1 ? "" : "s", purged);
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malloc_cprintf(write_cb, cbopaque,
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" allocated nmalloc ndalloc nrequests\n");
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CTL_I_GET("stats.arenas.0.small.allocated", &small_allocated, size_t);
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CTL_I_GET("stats.arenas.0.small.nmalloc", &small_nmalloc, uint64_t);
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CTL_I_GET("stats.arenas.0.small.ndalloc", &small_ndalloc, uint64_t);
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CTL_I_GET("stats.arenas.0.small.nrequests", &small_nrequests, uint64_t);
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malloc_cprintf(write_cb, cbopaque,
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"small: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n",
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small_allocated, small_nmalloc, small_ndalloc, small_nrequests);
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CTL_I_GET("stats.arenas.0.large.allocated", &large_allocated, size_t);
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CTL_I_GET("stats.arenas.0.large.nmalloc", &large_nmalloc, uint64_t);
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CTL_I_GET("stats.arenas.0.large.ndalloc", &large_ndalloc, uint64_t);
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CTL_I_GET("stats.arenas.0.large.nrequests", &large_nrequests, uint64_t);
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malloc_cprintf(write_cb, cbopaque,
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"large: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n",
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large_allocated, large_nmalloc, large_ndalloc, large_nrequests);
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malloc_cprintf(write_cb, cbopaque,
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"total: %12zu %12"PRIu64" %12"PRIu64" %12"PRIu64"\n",
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small_allocated + large_allocated,
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small_nmalloc + large_nmalloc,
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small_ndalloc + large_ndalloc,
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small_nrequests + large_nrequests);
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malloc_cprintf(write_cb, cbopaque, "active: %12zu\n", pactive * page);
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CTL_I_GET("stats.arenas.0.mapped", &mapped, size_t);
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malloc_cprintf(write_cb, cbopaque, "mapped: %12zu\n", mapped);
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if (bins)
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stats_arena_bins_print(write_cb, cbopaque, i);
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if (large)
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stats_arena_lruns_print(write_cb, cbopaque, i);
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}
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void
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stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
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const char *opts)
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{
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int err;
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uint64_t epoch;
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size_t u64sz;
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bool general = true;
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bool merged = true;
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bool unmerged = true;
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bool bins = true;
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bool large = true;
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/*
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* Refresh stats, in case mallctl() was called by the application.
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*
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* Check for OOM here, since refreshing the ctl cache can trigger
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* allocation. In practice, none of the subsequent mallctl()-related
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* calls in this function will cause OOM if this one succeeds.
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* */
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epoch = 1;
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u64sz = sizeof(uint64_t);
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err = je_mallctl("epoch", &epoch, &u64sz, &epoch, sizeof(uint64_t));
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if (err != 0) {
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if (err == EAGAIN) {
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malloc_write("<jemalloc>: Memory allocation failure in "
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"mallctl(\"epoch\", ...)\n");
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return;
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}
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malloc_write("<jemalloc>: Failure in mallctl(\"epoch\", "
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"...)\n");
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abort();
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}
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if (opts != NULL) {
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unsigned i;
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for (i = 0; opts[i] != '\0'; i++) {
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switch (opts[i]) {
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case 'g':
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general = false;
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break;
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case 'm':
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merged = false;
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break;
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case 'a':
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unmerged = false;
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break;
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case 'b':
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bins = false;
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break;
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case 'l':
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large = false;
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break;
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default:;
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}
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}
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}
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malloc_cprintf(write_cb, cbopaque,
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"___ Begin jemalloc statistics ___\n");
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if (general) {
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int err;
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const char *cpv;
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bool bv;
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unsigned uv;
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ssize_t ssv;
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size_t sv, bsz, ssz, sssz, cpsz;
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bsz = sizeof(bool);
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ssz = sizeof(size_t);
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sssz = sizeof(ssize_t);
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cpsz = sizeof(const char *);
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CTL_GET("version", &cpv, const char *);
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malloc_cprintf(write_cb, cbopaque, "Version: %s\n", cpv);
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CTL_GET("config.debug", &bv, bool);
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malloc_cprintf(write_cb, cbopaque, "Assertions %s\n",
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bv ? "enabled" : "disabled");
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#define OPT_WRITE_BOOL(n) \
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if ((err = je_mallctl("opt."#n, &bv, &bsz, NULL, 0)) \
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== 0) { \
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malloc_cprintf(write_cb, cbopaque, \
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" opt."#n": %s\n", bv ? "true" : "false"); \
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}
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#define OPT_WRITE_SIZE_T(n) \
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if ((err = je_mallctl("opt."#n, &sv, &ssz, NULL, 0)) \
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== 0) { \
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malloc_cprintf(write_cb, cbopaque, \
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" opt."#n": %zu\n", sv); \
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}
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#define OPT_WRITE_SSIZE_T(n) \
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if ((err = je_mallctl("opt."#n, &ssv, &sssz, NULL, 0)) \
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== 0) { \
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malloc_cprintf(write_cb, cbopaque, \
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" opt."#n": %zd\n", ssv); \
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}
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#define OPT_WRITE_CHAR_P(n) \
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if ((err = je_mallctl("opt."#n, &cpv, &cpsz, NULL, 0)) \
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== 0) { \
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malloc_cprintf(write_cb, cbopaque, \
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" opt."#n": \"%s\"\n", cpv); \
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}
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malloc_cprintf(write_cb, cbopaque,
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"Run-time option settings:\n");
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OPT_WRITE_BOOL(abort)
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OPT_WRITE_SIZE_T(lg_chunk)
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OPT_WRITE_CHAR_P(dss)
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OPT_WRITE_SIZE_T(narenas)
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OPT_WRITE_SSIZE_T(lg_dirty_mult)
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OPT_WRITE_BOOL(stats_print)
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OPT_WRITE_BOOL(junk)
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OPT_WRITE_SIZE_T(quarantine)
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OPT_WRITE_BOOL(redzone)
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OPT_WRITE_BOOL(zero)
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OPT_WRITE_BOOL(utrace)
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OPT_WRITE_BOOL(valgrind)
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OPT_WRITE_BOOL(xmalloc)
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OPT_WRITE_BOOL(tcache)
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OPT_WRITE_SSIZE_T(lg_tcache_max)
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OPT_WRITE_BOOL(prof)
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OPT_WRITE_CHAR_P(prof_prefix)
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OPT_WRITE_BOOL(prof_active)
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OPT_WRITE_SSIZE_T(lg_prof_sample)
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OPT_WRITE_BOOL(prof_accum)
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OPT_WRITE_SSIZE_T(lg_prof_interval)
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OPT_WRITE_BOOL(prof_gdump)
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OPT_WRITE_BOOL(prof_final)
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OPT_WRITE_BOOL(prof_leak)
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#undef OPT_WRITE_BOOL
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#undef OPT_WRITE_SIZE_T
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#undef OPT_WRITE_SSIZE_T
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#undef OPT_WRITE_CHAR_P
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malloc_cprintf(write_cb, cbopaque, "CPUs: %u\n", ncpus);
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CTL_GET("arenas.narenas", &uv, unsigned);
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malloc_cprintf(write_cb, cbopaque, "Arenas: %u\n", uv);
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malloc_cprintf(write_cb, cbopaque, "Pointer size: %zu\n",
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sizeof(void *));
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CTL_GET("arenas.quantum", &sv, size_t);
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malloc_cprintf(write_cb, cbopaque, "Quantum size: %zu\n", sv);
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CTL_GET("arenas.page", &sv, size_t);
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malloc_cprintf(write_cb, cbopaque, "Page size: %zu\n", sv);
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CTL_GET("opt.lg_dirty_mult", &ssv, ssize_t);
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if (ssv >= 0) {
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malloc_cprintf(write_cb, cbopaque,
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"Min active:dirty page ratio per arena: %u:1\n",
|
|
(1U << ssv));
|
|
} else {
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Min active:dirty page ratio per arena: N/A\n");
|
|
}
|
|
if ((err = je_mallctl("arenas.tcache_max", &sv, &ssz, NULL, 0))
|
|
== 0) {
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Maximum thread-cached size class: %zu\n", sv);
|
|
}
|
|
if ((err = je_mallctl("opt.prof", &bv, &bsz, NULL, 0)) == 0 &&
|
|
bv) {
|
|
CTL_GET("opt.lg_prof_sample", &sv, size_t);
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Average profile sample interval: %"PRIu64
|
|
" (2^%zu)\n", (((uint64_t)1U) << sv), sv);
|
|
|
|
CTL_GET("opt.lg_prof_interval", &ssv, ssize_t);
|
|
if (ssv >= 0) {
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Average profile dump interval: %"PRIu64
|
|
" (2^%zd)\n",
|
|
(((uint64_t)1U) << ssv), ssv);
|
|
} else {
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Average profile dump interval: N/A\n");
|
|
}
|
|
}
|
|
CTL_GET("opt.lg_chunk", &sv, size_t);
|
|
malloc_cprintf(write_cb, cbopaque, "Chunk size: %zu (2^%zu)\n",
|
|
(ZU(1) << sv), sv);
|
|
}
|
|
|
|
if (config_stats) {
|
|
size_t *cactive;
|
|
size_t allocated, active, mapped;
|
|
size_t chunks_current, chunks_high;
|
|
uint64_t chunks_total;
|
|
size_t huge_allocated;
|
|
uint64_t huge_nmalloc, huge_ndalloc;
|
|
|
|
CTL_GET("stats.cactive", &cactive, size_t *);
|
|
CTL_GET("stats.allocated", &allocated, size_t);
|
|
CTL_GET("stats.active", &active, size_t);
|
|
CTL_GET("stats.mapped", &mapped, size_t);
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Allocated: %zu, active: %zu, mapped: %zu\n",
|
|
allocated, active, mapped);
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"Current active ceiling: %zu\n", atomic_read_z(cactive));
|
|
|
|
/* Print chunk stats. */
|
|
CTL_GET("stats.chunks.total", &chunks_total, uint64_t);
|
|
CTL_GET("stats.chunks.high", &chunks_high, size_t);
|
|
CTL_GET("stats.chunks.current", &chunks_current, size_t);
|
|
malloc_cprintf(write_cb, cbopaque, "chunks: nchunks "
|
|
"highchunks curchunks\n");
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
" %13"PRIu64" %12zu %12zu\n",
|
|
chunks_total, chunks_high, chunks_current);
|
|
|
|
/* Print huge stats. */
|
|
CTL_GET("stats.huge.nmalloc", &huge_nmalloc, uint64_t);
|
|
CTL_GET("stats.huge.ndalloc", &huge_ndalloc, uint64_t);
|
|
CTL_GET("stats.huge.allocated", &huge_allocated, size_t);
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"huge: nmalloc ndalloc allocated\n");
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
" %12"PRIu64" %12"PRIu64" %12zu\n",
|
|
huge_nmalloc, huge_ndalloc, huge_allocated);
|
|
|
|
if (merged) {
|
|
unsigned narenas;
|
|
|
|
CTL_GET("arenas.narenas", &narenas, unsigned);
|
|
{
|
|
VARIABLE_ARRAY(bool, initialized, narenas);
|
|
size_t isz;
|
|
unsigned i, ninitialized;
|
|
|
|
isz = sizeof(bool) * narenas;
|
|
xmallctl("arenas.initialized", initialized,
|
|
&isz, NULL, 0);
|
|
for (i = ninitialized = 0; i < narenas; i++) {
|
|
if (initialized[i])
|
|
ninitialized++;
|
|
}
|
|
|
|
if (ninitialized > 1 || unmerged == false) {
|
|
/* Print merged arena stats. */
|
|
malloc_cprintf(write_cb, cbopaque,
|
|
"\nMerged arenas stats:\n");
|
|
stats_arena_print(write_cb, cbopaque,
|
|
narenas, bins, large);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (unmerged) {
|
|
unsigned narenas;
|
|
|
|
/* Print stats for each arena. */
|
|
|
|
CTL_GET("arenas.narenas", &narenas, unsigned);
|
|
{
|
|
VARIABLE_ARRAY(bool, initialized, narenas);
|
|
size_t isz;
|
|
unsigned i;
|
|
|
|
isz = sizeof(bool) * narenas;
|
|
xmallctl("arenas.initialized", initialized,
|
|
&isz, NULL, 0);
|
|
|
|
for (i = 0; i < narenas; i++) {
|
|
if (initialized[i]) {
|
|
malloc_cprintf(write_cb,
|
|
cbopaque,
|
|
"\narenas[%u]:\n", i);
|
|
stats_arena_print(write_cb,
|
|
cbopaque, i, bins, large);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
malloc_cprintf(write_cb, cbopaque, "--- End jemalloc statistics ---\n");
|
|
}
|