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Add bytes counter to arena large stats.

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To prepare for the upcoming usize changes, stats collected by
multiplying alive allocations and the bin size is no longer accurate.
Thus, add separate counters to record the bytes malloced and dalloced.
This commit is contained in:
guangli-dai 2024-03-25 15:53:59 -07:00 • committed by Guangli Dai
parent bffe921ba0
commit 96b15d5d43
3 changed files with 41 additions and 8 deletions
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24
src/arena.c
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@ -145,8 +145,18 @@ arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
assert(nmalloc - ndalloc <= SIZE_T_MAX);
size_t curlextents = (size_t)(nmalloc - ndalloc);
lstats[i].curlextents += curlextents;
astats->allocated_large +=
curlextents * sz_index2size(SC_NBINS + i);
if (config_limit_usize_gap) {
uint64_t active_bytes = locked_read_u64(tsdn,
LOCKEDINT_MTX(arena->stats.mtx),
&arena->stats.lstats[i].active_bytes);
locked_inc_u64_unsynchronized(
&lstats[i].active_bytes, active_bytes);
astats->allocated_large += active_bytes;
} else {
astats->allocated_large +=
curlextents * sz_index2size(SC_NBINS + i);
}
}
pa_shard_stats_merge(tsdn, &arena->pa_shard, &astats->pa_shard_stats,
@ -315,6 +325,11 @@ arena_large_malloc_stats_update(tsdn_t *tsdn, arena_t *arena, size_t usize) {
LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
locked_inc_u64(tsdn, LOCKEDINT_MTX(arena->stats.mtx),
&arena->stats.lstats[hindex].nmalloc, 1);
if (config_limit_usize_gap) {
locked_inc_u64(tsdn, LOCKEDINT_MTX(arena->stats.mtx),
&arena->stats.lstats[hindex].active_bytes,
usize);
}
LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
}
}
@ -338,6 +353,11 @@ arena_large_dalloc_stats_update(tsdn_t *tsdn, arena_t *arena, size_t usize) {
LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
locked_inc_u64(tsdn, LOCKEDINT_MTX(arena->stats.mtx),
&arena->stats.lstats[hindex].ndalloc, 1);
if (config_limit_usize_gap) {
locked_dec_u64(tsdn, LOCKEDINT_MTX(arena->stats.mtx),
&arena->stats.lstats[hindex].active_bytes,
usize);
}
LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
}
}