diff options
Diffstat (limited to 'storage/maria/ma_pagecache.h')
| -rw-r--r-- | storage/maria/ma_pagecache.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/storage/maria/ma_pagecache.h b/storage/maria/ma_pagecache.h index 8460eaddc57..f7ddb2fe716 100644 --- a/storage/maria/ma_pagecache.h +++ b/storage/maria/ma_pagecache.h @@ -104,7 +104,9 @@ typedef struct st_pagecache_hash_link PAGECACHE_HASH_LINK; #include <wqueue.h> -#define PAGECACHE_CHANGED_BLOCKS_HASH 128 /* must be power of 2 */ +/* Default size of hash for changed files */ +#define MIN_PAGECACHE_CHANGED_BLOCKS_HASH_SIZE 512 + #define PAGECACHE_PRIORITY_LOW 0 #define PAGECACHE_PRIORITY_DEFAULT 3 #define PAGECACHE_PRIORITY_HIGH 6 @@ -121,6 +123,7 @@ typedef struct st_pagecache ulong age_threshold; /* age threshold for hot blocks */ ulonglong time; /* total number of block link operations */ ulong hash_entries; /* max number of entries in the hash table */ + ulong changed_blocks_hash_size; /* Number of hash buckets for file blocks */ long hash_links; /* max number of hash links */ long hash_links_used; /* number of hash links taken from free links pool */ long disk_blocks; /* max number of blocks in the cache */ @@ -145,9 +148,9 @@ typedef struct st_pagecache WQUEUE waiting_for_hash_link;/* waiting for a free hash link */ WQUEUE waiting_for_block; /* requests waiting for a free block */ /* hash for dirty file bl.*/ - PAGECACHE_BLOCK_LINK *changed_blocks[PAGECACHE_CHANGED_BLOCKS_HASH]; + PAGECACHE_BLOCK_LINK **changed_blocks; /* hash for other file bl.*/ - PAGECACHE_BLOCK_LINK *file_blocks[PAGECACHE_CHANGED_BLOCKS_HASH]; + PAGECACHE_BLOCK_LINK **file_blocks; /* The following variables are and variables used to hold parameters for @@ -195,10 +198,11 @@ extern PAGECACHE dflt_pagecache_var, *dflt_pagecache; extern ulong init_pagecache(PAGECACHE *pagecache, size_t use_mem, uint division_limit, uint age_threshold, - uint block_size, myf my_read_flags); + uint block_size, uint changed_blocks_hash_size, + myf my_read_flags); extern ulong resize_pagecache(PAGECACHE *pagecache, size_t use_mem, uint division_limit, - uint age_threshold); + uint age_threshold, uint changed_blocks_hash_size); extern void change_pagecache_param(PAGECACHE *pagecache, uint division_limit, uint age_threshold); |