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double arena per 4; large page objects 1/8 of large page size

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daanx 2024-12-23 17:10:34 -08:00
parent 3fa3476712
commit b77b34df96
2 changed files with 2 additions and 2 deletions
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2
include/mimalloc/types.h
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@ -324,7 +324,7 @@ typedef struct mi_page_s {
// (Except for large pages since huge objects are allocated in 4MiB chunks)
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 11 KiB
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 128 KiB
#define MI_LARGE_MAX_OBJ_SIZE ((MI_LARGE_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 1 MiB
#define MI_LARGE_MAX_OBJ_SIZE ((MI_LARGE_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 1 MiB
#define MI_LARGE_MAX_OBJ_WSIZE (MI_LARGE_MAX_OBJ_SIZE/MI_SIZE_SIZE)

2
src/arena.c
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@ -280,7 +280,7 @@ static bool mi_arena_reserve(mi_subproc_t* subproc, size_t req_size, bool allow_
if (arena_count >= 1 && arena_count <= 128) {
// scale up the arena sizes exponentially every 4 entries
const size_t multiplier = (size_t)1 << _mi_clamp(arena_count/2, 0, 16);
const size_t multiplier = (size_t)1 << _mi_clamp(arena_count/4, 0, 16);
size_t reserve = 0;
if (!mi_mul_overflow(multiplier, arena_reserve, &reserve)) {
arena_reserve = reserve;