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HPA stats: Allow some derived stats.

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However, we put them in their own struct, to avoid the messiness that the arena
has (mixing derived and non-derived stats in the arena_stats_t).
This commit is contained in:
David Goldblatt 2020-12-03 15:35:38 -08:00 committed by David Goldblatt
parent 30b9e8162b
commit 746ea3de6f
3 changed files with 29 additions and 14 deletions
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22
include/jemalloc/internal/hpa.h
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@ -6,12 +6,22 @@
#include "jemalloc/internal/pai.h"
#include "jemalloc/internal/psset.h"
typedef struct hpa_shard_nonderived_stats_s hpa_shard_nonderived_stats_t;
struct hpa_shard_nonderived_stats_s {
/*
* The number of times we've purged a hugepage. Each eviction purges a
* single hugepage.
*
* Guarded by the grow mutex.
*/
uint64_t nevictions;
};
/* Completely derived; only used by CTL. */
typedef struct hpa_shard_stats_s hpa_shard_stats_t;
struct hpa_shard_stats_s {
psset_stats_t psset_stats;
/* The stat version of the nevictions counter. */
uint64_t nevictions;
hpa_shard_nonderived_stats_t nonderived_stats;
};
typedef struct hpa_shard_s hpa_shard_t;
@ -73,12 +83,10 @@ struct hpa_shard_s {
emap_t *emap;
/*
* The number of times we've purged a hugepage. Each eviction purges a
* single hugepage.
*
* Guarded by the grow mutex.
* Those stats which are copied directly into the CTL-centric hpa shard
* stats.
*/
uint64_t nevictions;
hpa_shard_nonderived_stats_t stats;
};
/*

2
src/ctl.c
View File

@ -3506,7 +3506,7 @@ stats_arenas_i_extents_j_index(tsdn_t *tsdn, const size_t *mib,
}
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nevictions,
arenas_i(mib[2])->astats->hpastats.nevictions, uint64_t);
arenas_i(mib[2])->astats->hpastats.nonderived_stats.nevictions, uint64_t);
/* Full, huge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge,

19
src/hpa.c
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@ -74,7 +74,7 @@ hpa_shard_init(hpa_shard_t *shard, emap_t *emap, base_t *base,
shard->eden_len = 0;
shard->ind = ind;
shard->emap = emap;
shard->nevictions = 0;
shard->stats.nevictions = 0;
/*
* Fill these in last, so that if an hpa_shard gets used despite
@ -95,10 +95,17 @@ hpa_shard_init(hpa_shard_t *shard, emap_t *emap, base_t *base,
* only combines the stats from one stats objet to another. Hence the lack of
* locking here.
*/
static void
hpa_shard_nonderived_stats_accum(hpa_shard_nonderived_stats_t *dst,
hpa_shard_nonderived_stats_t *src) {
dst->nevictions += src->nevictions;
}
void
hpa_shard_stats_accum(hpa_shard_stats_t *dst, hpa_shard_stats_t *src) {
psset_stats_accum(&dst->psset_stats, &src->psset_stats);
dst->nevictions += src->nevictions;
hpa_shard_nonderived_stats_accum(&dst->nonderived_stats,
&src->nonderived_stats);
}
void
@ -107,7 +114,7 @@ hpa_shard_stats_merge(tsdn_t *tsdn, hpa_shard_t *shard,
malloc_mutex_lock(tsdn, &shard->grow_mtx);
malloc_mutex_lock(tsdn, &shard->mtx);
psset_stats_accum(&dst->psset_stats, &shard->psset.stats);
dst->nevictions += shard->nevictions;
hpa_shard_nonderived_stats_accum(&dst->nonderived_stats, &shard->stats);
malloc_mutex_unlock(tsdn, &shard->mtx);
malloc_mutex_unlock(tsdn, &shard->grow_mtx);
}
@ -290,7 +297,7 @@ hpa_handle_ps_eviction(tsdn_t *tsdn, hpa_shard_t *shard, hpdata_t *ps) {
malloc_mutex_assert_not_owner(tsdn, &shard->grow_mtx);
malloc_mutex_lock(tsdn, &shard->grow_mtx);
shard->nevictions++;
shard->stats.nevictions++;
hpdata_list_prepend(&shard->unused_slabs, ps);
malloc_mutex_unlock(tsdn, &shard->grow_mtx);
}
@ -431,7 +438,7 @@ hpa_alloc_psset(tsdn_t *tsdn, hpa_shard_t *shard, size_t size) {
malloc_mutex_lock(tsdn, &shard->mtx);
edata = edata_cache_small_get(tsdn, &shard->ecs);
if (edata == NULL) {
shard->nevictions++;
shard->stats.nevictions++;
malloc_mutex_unlock(tsdn, &shard->mtx);
malloc_mutex_unlock(tsdn, &shard->grow_mtx);
hpa_handle_ps_eviction(tsdn, shard, ps);
@ -452,7 +459,7 @@ hpa_alloc_psset(tsdn_t *tsdn, hpa_shard_t *shard, size_t size) {
edata_cache_small_put(tsdn, &shard->ecs, edata);
shard->nevictions++;
shard->stats.nevictions++;
malloc_mutex_unlock(tsdn, &shard->mtx);
malloc_mutex_unlock(tsdn, &shard->grow_mtx);