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Set huge_threshold to 8M by default.

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This feature uses an dedicated arena to handle huge requests, which
significantly improves VM fragmentation.  In production workload we tested it
often reduces VM size by >30%.
This commit is contained in:
Qi Wang 2019-01-16 12:25:24 -08:00 • committed by Qi Wang
parent d3145014a0
commit 350809dc5d
2 changed files with 9 additions and 2 deletions
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2
include/jemalloc/internal/arena_types.h
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@ -46,6 +46,6 @@ typedef enum {
* When allocation_size >= huge_threshold, use the dedicated huge arena (unless
* have explicitly spicified arena index). 0 disables the feature.
*/
#define HUGE_THRESHOLD_DEFAULT 0
#define HUGE_THRESHOLD_DEFAULT (8 << 20)
#endif /* JEMALLOC_INTERNAL_ARENA_TYPES_H */