diff options
Diffstat (limited to 'mysys/mf_keycache.c')
| -rw-r--r-- | mysys/mf_keycache.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mysys/mf_keycache.c b/mysys/mf_keycache.c index 3263459bd72..9356f9154f0 100644 --- a/mysys/mf_keycache.c +++ b/mysys/mf_keycache.c @@ -58,11 +58,11 @@ When a new block is required it is first tried to pop one from the stack. If the stack is empty, it is tried to get a never-used block from the pool. If this is empty too, then a block is taken from the LRU ring, flushing it - to disk, if neccessary. This is handled in find_key_block(). + to disk, if necessary. This is handled in find_key_block(). With the new free list, the blocks can have three temperatures: hot, warm and cold (which is free). This is remembered in the block header by the enum BLOCK_TEMPERATURE temperature variable. Remembering the - temperature is neccessary to correctly count the number of warm blocks, + temperature is necessary to correctly count the number of warm blocks, which is required to decide when blocks are allowed to become hot. Whenever a block is inserted to another (sub-)chain, we take the old and new temperature into account to decide if we got one more or less warm block. @@ -450,7 +450,7 @@ static inline uint next_power(uint value) structure of the type SIMPLE_KEY_CACHE_CB that is used for this key cache. The parameter keycache is supposed to point to this structure. The parameter key_cache_block_size specifies the size of the blocks in - the key cache to be built. The parameters division_limit and age_threshhold + the key cache to be built. The parameters division_limit and age_threshold determine the initial values of those characteristics of the key cache that are used for midpoint insertion strategy. The parameter use_mem specifies the total amount of memory to be allocated for key cache blocks |