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Track nfills and nflushes for arenas.i.small / large.

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Small is added purely for convenience.  Large flushes wasn't tracked before and
can be useful in analysis.  Large fill simply reports nmalloc, since there is no
batch fill for large currently.
This commit is contained in:
Qi Wang
2019-05-06 16:36:55 -07:00
committed by Qi Wang
parent 13e88ae970
commit 07c44847c2
7 changed files with 139 additions and 15 deletions
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16
include/jemalloc/internal/arena_stats.h
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@@ -35,6 +35,13 @@ struct arena_stats_large_s {
* periodically merges into this counter.
*/
arena_stats_u64_t nrequests; /* Partially derived. */
/*
* Number of tcache fills / flushes for large (similarly, periodically
* merged). Note that there is no large tcache batch-fill currently
* (i.e. only fill 1 at a time); however flush may be batched.
*/
arena_stats_u64_t nfills; /* Partially derived. */
arena_stats_u64_t nflushes; /* Partially derived. */
/* Current number of allocations of this size class. */
size_t curlextents; /* Derived. */
@@ -101,6 +108,8 @@ struct arena_stats_s {
atomic_zu_t allocated_large; /* Derived. */
arena_stats_u64_t nmalloc_large; /* Derived. */
arena_stats_u64_t ndalloc_large; /* Derived. */
arena_stats_u64_t nfills_large; /* Derived. */
arena_stats_u64_t nflushes_large; /* Derived. */
arena_stats_u64_t nrequests_large; /* Derived. */
/* Number of bytes cached in tcache associated with this arena. */
@@ -240,11 +249,12 @@ arena_stats_accum_zu(atomic_zu_t *dst, size_t src) {
}
static inline void
arena_stats_large_nrequests_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
arena_stats_large_flush_nrequests_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
szind_t szind, uint64_t nrequests) {
arena_stats_lock(tsdn, arena_stats);
arena_stats_add_u64(tsdn, arena_stats, &arena_stats->lstats[szind -
SC_NBINS].nrequests, nrequests);
arena_stats_large_t *lstats = &arena_stats->lstats[szind - SC_NBINS];
arena_stats_add_u64(tsdn, arena_stats, &lstats->nrequests, nrequests);
arena_stats_add_u64(tsdn, arena_stats, &lstats->nflushes, 1);
arena_stats_unlock(tsdn, arena_stats);
}

2
include/jemalloc/internal/ctl.h
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@@ -39,6 +39,8 @@ typedef struct ctl_arena_stats_s {
uint64_t nmalloc_small;
uint64_t ndalloc_small;
uint64_t nrequests_small;
uint64_t nfills_small;
uint64_t nflushes_small;
bin_stats_t bstats[SC_NBINS];
arena_stats_large_t lstats[SC_NSIZES - SC_NBINS];