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set more conservative options with increased medium and small object sizes

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This commit is contained in:
Daan Leijen 2025-01-07 13:19:44 -08:00
parent 3f8d2d07ab
commit 86550d09bc
2 changed files with 6 additions and 6 deletions
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8
include/mimalloc/types.h
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@ -337,13 +337,13 @@ 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)/8) // < 8 KiB
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 16 KiB
#if MI_ENABLE_LARGE_PAGES
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 64 KiB
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 128 KiB
#define MI_LARGE_MAX_OBJ_SIZE (MI_LARGE_PAGE_SIZE/8) // <= 256 KiB // 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/8) // <= 64 KiB
#define MI_LARGE_MAX_OBJ_SIZE MI_MEDIUM_MAX_OBJ_SIZE // <= 64 KiB // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
#define MI_MEDIUM_MAX_OBJ_SIZE (MI_MEDIUM_PAGE_SIZE/4) // <= 128 KiB
#define MI_LARGE_MAX_OBJ_SIZE MI_MEDIUM_MAX_OBJ_SIZE // note: this must be a nice power of 2 or we get rounding issues with `_mi_bin`
#endif
#define MI_LARGE_MAX_OBJ_WSIZE (MI_LARGE_MAX_OBJ_SIZE/MI_SIZE_SIZE)

4
src/options.c
View file

@ -169,8 +169,8 @@ static mi_option_desc_t options[_mi_option_last] =
UNINIT, MI_OPTION(guarded_sample_rate)}, // 1 out of N allocations in the min/max range will be guarded (=4000)
{ 0, UNINIT, MI_OPTION(guarded_sample_seed)},
{ 0, UNINIT, MI_OPTION(target_segments_per_thread) }, // abandon segments beyond this point, or 0 to disable.
{ 1, UNINIT, MI_OPTION_LEGACY(reclaim_on_free, abandoned_reclaim_on_free) },// reclaim an abandoned segment on a free
{ 2, UNINIT, MI_OPTION(page_full_retain) },
{ 0, UNINIT, MI_OPTION_LEGACY(reclaim_on_free, abandoned_reclaim_on_free) },// reclaim an abandoned segment on a free
{ 0, UNINIT, MI_OPTION(page_full_retain) },
{ 4, UNINIT, MI_OPTION(page_max_candidates) },
{ 0, UNINIT, MI_OPTION(max_vabits) },
{ MI_DEFAULT_PAGEMAP_COMMIT,