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reduce object class sizes (/8), add max reclaim queue size

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daanx 2025-02-28 16:51:59 -08:00
parent 2efc71ef57
commit 6fce7b90a4
4 changed files with 32 additions and 27 deletions
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1
include/mimalloc.h
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@ -404,6 +404,7 @@ typedef enum mi_option_e {
mi_option_max_vabits, // max user space virtual address bits to consider (=48)
mi_option_pagemap_commit, // commit the full pagemap (to always catch invalid pointer uses) (=0)
mi_option_page_commit_on_demand, // commit page memory on-demand
mi_option_page_reclaim_max, // don't reclaim pages if we already own N pages (in that size class) (=16)
_mi_option_last,
// legacy option names
mi_option_large_os_pages = mi_option_allow_large_os_pages,

4
include/mimalloc/types.h
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@ -339,9 +339,9 @@ typedef struct mi_page_s {
#endif
// The max object size are checked to not waste more than 12.5% internally over the page sizes.
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 16 KiB
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < ~8 KiB
#if MI_ENABLE_LARGE_PAGES
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 128 KiB
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 64 KiB
#define MI_LARGE_MAX_OBJ_SIZE (MI_LARGE_PAGE_SIZE/8) // <= 512KiB // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
#else
#define MI_MEDIUM_MAX_OBJ_SIZE (MI_MEDIUM_PAGE_SIZE/4) // <= 128 KiB