increase minimal commit size to 8*slice-size and add decommit_extend_delay as option

2 files changed, 3 insertions, 2 deletions

diff --git a/include/mimalloc-types.h b/include/mimalloc-types.h
index 4136428..8cd3a4c 100644
--- a/include/mimalloc-types.h
+++ b/include/mimalloc-types.h
@@ -320,10 +320,10 @@ typedef enum mi_segment_kind_e {
 // the corresponding MI_COMMIT_SIZE area is committed.
 // The MI_COMMIT_SIZE must be a multiple of the slice
 // size. If it is equal we have the most fine grained 
-// decommit (but in practice 2x seems to perform better).
+// decommit but setting it higher can be more efficient.
 // ------------------------------------------------------
 
-#define MI_COMMIT_SIZE              (MI_SEGMENT_SLICE_SIZE)   
+#define MI_COMMIT_SIZE              (8*MI_SEGMENT_SLICE_SIZE)   
 #define MI_COMMIT_MASK_BITS         (MI_SEGMENT_SIZE / MI_COMMIT_SIZE)  
 #define MI_COMMIT_MASK_FIELD_BITS    MI_SIZE_BITS
 #define MI_COMMIT_MASK_FIELD_COUNT  (MI_COMMIT_MASK_BITS / MI_COMMIT_MASK_FIELD_BITS)
diff --git a/include/mimalloc.h b/include/mimalloc.h
index 06597e9..0880584 100644
--- a/include/mimalloc.h
+++ b/include/mimalloc.h
@@ -328,6 +328,7 @@ typedef enum mi_option_e {
   mi_option_max_warnings,
   mi_option_allow_decommit,
   mi_option_segment_decommit_delay,  
+  mi_option_decommit_extend_delay,
   _mi_option_last
 } mi_option_t;