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Refactor *decay_time into *decay_ms.

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Support millisecond resolution for decay times.  Among other use cases
this makes it possible to specify a short initial dirty-->muzzy decay
phase, followed by a longer muzzy-->clean decay phase.

This resolves #812.
This commit is contained in:
Jason Evans 2017-05-17 10:47:00 -07:00
parent baf3e294e0
commit 6e62c62862
16 changed files with 320 additions and 328 deletions
Download patch file Download diff file Expand all files Collapse all files

28
include/jemalloc/internal/arena_externs.h
View file

@ -13,8 +13,8 @@ static const size_t large_pad =
#endif
;
extern ssize_t opt_dirty_decay_time;
extern ssize_t opt_muzzy_decay_time;
extern ssize_t opt_dirty_decay_ms;
extern ssize_t opt_muzzy_decay_ms;
extern const arena_bin_info_t arena_bin_info[NBINS];
@ -27,10 +27,10 @@ void arena_stats_large_nrequests_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
void arena_stats_mapped_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
size_t size);
void arena_basic_stats_merge(tsdn_t *tsdn, arena_t *arena,
unsigned *nthreads, const char **dss, ssize_t *dirty_decay_time,
ssize_t *muzzy_decay_time, size_t *nactive, size_t *ndirty, size_t *nmuzzy);
unsigned *nthreads, const char **dss, ssize_t *dirty_decay_ms,
ssize_t *muzzy_decay_ms, size_t *nactive, size_t *ndirty, size_t *nmuzzy);
void arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
const char **dss, ssize_t *dirty_decay_time, ssize_t *muzzy_decay_time,
const char **dss, ssize_t *dirty_decay_ms, ssize_t *muzzy_decay_ms,
size_t *nactive, size_t *ndirty, size_t *nmuzzy, arena_stats_t *astats,
malloc_bin_stats_t *bstats, malloc_large_stats_t *lstats);
void arena_extents_dirty_dalloc(tsdn_t *tsdn, arena_t *arena,
@ -46,12 +46,10 @@ void arena_extent_ralloc_large_shrink(tsdn_t *tsdn, arena_t *arena,
extent_t *extent, size_t oldsize);
void arena_extent_ralloc_large_expand(tsdn_t *tsdn, arena_t *arena,
extent_t *extent, size_t oldsize);
ssize_t arena_dirty_decay_time_get(arena_t *arena);
bool arena_dirty_decay_time_set(tsdn_t *tsdn, arena_t *arena,
ssize_t decay_time);
ssize_t arena_muzzy_decay_time_get(arena_t *arena);
bool arena_muzzy_decay_time_set(tsdn_t *tsdn, arena_t *arena,
ssize_t decay_time);
ssize_t arena_dirty_decay_ms_get(arena_t *arena);
bool arena_dirty_decay_ms_set(tsdn_t *tsdn, arena_t *arena, ssize_t decay_ms);
ssize_t arena_muzzy_decay_ms_get(arena_t *arena);
bool arena_muzzy_decay_ms_set(tsdn_t *tsdn, arena_t *arena, ssize_t decay_ms);
void arena_decay(tsdn_t *tsdn, arena_t *arena, bool all);
void arena_reset(tsd_t *tsd, arena_t *arena);
void arena_destroy(tsd_t *tsd, arena_t *arena);
@ -79,10 +77,10 @@ void *arena_ralloc(tsdn_t *tsdn, arena_t *arena, void *ptr, size_t oldsize,
size_t size, size_t alignment, bool zero, tcache_t *tcache);
dss_prec_t arena_dss_prec_get(arena_t *arena);
bool arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec);
ssize_t arena_dirty_decay_time_default_get(void);
bool arena_dirty_decay_time_default_set(ssize_t decay_time);
ssize_t arena_muzzy_decay_time_default_get(void);
bool arena_muzzy_decay_time_default_set(ssize_t decay_time);
ssize_t arena_dirty_decay_ms_default_get(void);
bool arena_dirty_decay_ms_default_set(ssize_t decay_ms);
ssize_t arena_muzzy_decay_ms_default_get(void);
bool arena_muzzy_decay_ms_default_set(ssize_t decay_ms);
unsigned arena_nthreads_get(arena_t *arena, bool internal);
void arena_nthreads_inc(arena_t *arena, bool internal);
void arena_nthreads_dec(arena_t *arena, bool internal);

4
include/jemalloc/internal/arena_structs_b.h
View file

@ -56,11 +56,11 @@ struct arena_decay_s {
*/
bool purging;
/*
* Approximate time in seconds from the creation of a set of unused
* Approximate time in milliseconds from the creation of a set of unused
* dirty pages until an equivalent set of unused dirty pages is purged
* and/or reused.
*/
atomic_zd_t time;
atomic_zd_t time_ms;
/* time / SMOOTHSTEP_NSTEPS. */
nstime_t interval;
/*

6
include/jemalloc/internal/arena_types.h
View file

@ -7,9 +7,9 @@
#define LG_SLAB_MAXREGS (LG_PAGE - LG_TINY_MIN)
#define SLAB_MAXREGS (1U << LG_SLAB_MAXREGS)
/* Default decay times in seconds. */
#define DIRTY_DECAY_TIME_DEFAULT 10
#define MUZZY_DECAY_TIME_DEFAULT 10
/* Default decay times in milliseconds. */
#define DIRTY_DECAY_MS_DEFAULT ZD(10 * 1000)
#define MUZZY_DECAY_MS_DEFAULT ZD(10 * 1000)
/* Number of event ticks between time checks. */
#define DECAY_NTICKS_PER_UPDATE 1000

4
include/jemalloc/internal/ctl.h
View file

@ -64,8 +64,8 @@ struct ctl_arena_s {
/* Basic stats, supported even if !config_stats. */
unsigned nthreads;
const char *dss;
ssize_t dirty_decay_time;
ssize_t muzzy_decay_time;
ssize_t dirty_decay_ms;
ssize_t muzzy_decay_ms;
size_t pactive;
size_t pdirty;
size_t pmuzzy;

3
include/jemalloc/internal/jemalloc_internal_decls.h
View file

@ -41,6 +41,9 @@
#ifndef SIZE_T_MAX
# define SIZE_T_MAX SIZE_MAX
#endif
#ifndef SSIZE_MAX
# define SSIZE_MAX ((ssize_t)(SIZE_T_MAX >> 1))
#endif
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>