6630c59896
We wait a while after deciding a huge extent should get hugified to see if it gets purged before long. This avoids hugifying extents that might shortly get dehugified for purging. Rename and use the hpa_dehugification_threshold option support code for this, since it's now ignored.
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
#ifndef JEMALLOC_INTERNAL_HPA_OPTS_H
|
|
#define JEMALLOC_INTERNAL_HPA_OPTS_H
|
|
|
|
#include "jemalloc/internal/fxp.h"
|
|
|
|
/*
|
|
* This file is morally part of hpa.h, but is split out for header-ordering
|
|
* reasons.
|
|
*/
|
|
|
|
typedef struct hpa_shard_opts_s hpa_shard_opts_t;
|
|
struct hpa_shard_opts_s {
|
|
/*
|
|
* The largest size we'll allocate out of the shard. For those
|
|
* allocations refused, the caller (in practice, the PA module) will
|
|
* fall back to the more general (for now) PAC, which can always handle
|
|
* any allocation request.
|
|
*/
|
|
size_t slab_max_alloc;
|
|
|
|
/*
|
|
* When the number of active bytes in a hugepage is >=
|
|
* hugification_threshold, we force hugify it.
|
|
*/
|
|
size_t hugification_threshold;
|
|
|
|
/*
|
|
* The HPA purges whenever the number of pages exceeds dirty_mult *
|
|
* active_pages. This may be set to (fxp_t)-1 to disable purging.
|
|
*/
|
|
fxp_t dirty_mult;
|
|
|
|
/*
|
|
* Whether or not the PAI methods are allowed to defer work to a
|
|
* subsequent hpa_shard_do_deferred_work() call. Practically, this
|
|
* corresponds to background threads being enabled. We track this
|
|
* ourselves for encapsulation purposes.
|
|
*/
|
|
bool deferral_allowed;
|
|
|
|
/*
|
|
* How long a hugepage has to be a hugification candidate before it will
|
|
* actually get hugified.
|
|
*/
|
|
uint64_t hugify_delay_ms;
|
|
};
|
|
|
|
#define HPA_SHARD_OPTS_DEFAULT { \
|
|
/* slab_max_alloc */ \
|
|
64 * 1024, \
|
|
/* hugification_threshold */ \
|
|
HUGEPAGE * 95 / 100, \
|
|
/* dirty_mult */ \
|
|
FXP_INIT_PERCENT(25), \
|
|
/* \
|
|
* deferral_allowed \
|
|
* \
|
|
* Really, this is always set by the arena during creation \
|
|
* or by an hpa_shard_set_deferral_allowed call, so the value \
|
|
* we put here doesn't matter. \
|
|
*/ \
|
|
false, \
|
|
/* hugify_delay_ms */ \
|
|
10 * 1000 \
|
|
}
|
|
|
|
#endif /* JEMALLOC_INTERNAL_HPA_OPTS_H */
|