"The size of the cache to hold the SQL statements for the binary log during a transaction. If you often use big, multi-statement transactions you can increase this to get more performance.",
"After inserting delayed_insert_limit rows, the INSERT DELAYED handler will check if there are any SELECT statements pending. If so, it allows these to execute before continuing.",
"What size queue (in rows) should be allocated for handling INSERT DELAYED. If the queue becomes full, any client that does INSERT DELAYED will wait until there is room in the queue again.",
"This characterizes the number of hits a hot block has to be untouched until it is considered aged enough to be downgraded to a warm block. This specifies the percentage ratio of that number of hits to the total number of blocks in key cache",
(gptr*)&dflt_key_cache_var.param_age_threshold,
(gptr*)0,
0,(GET_ULONG|GET_ASK_ADDR),REQUIRED_ARG,
300,100,~0L,0,100,0},
{"key_cache_block_size",OPT_KEY_CACHE_BLOCK_SIZE,
"The default size of key cache blocks",
(gptr*)&dflt_key_cache_var.param_block_size,
...
...
@@ -4732,12 +4763,6 @@ replicating a LOAD DATA INFILE command.",
"This characterizes the number of hits a hot block has to be untouched until it is considered aged enough to be downgraded to a warm block. This specifies the percentage ratio of that number of hits to the total number of blocks in key cache",
(gptr*)&dflt_key_cache_var.param_age_threshold,
(gptr*)0,
0,(GET_ULONG|GET_ASK_ADDR),REQUIRED_ARG,
300,100,~0L,0,100,0},
{"long_query_time",OPT_LONG_QUERY_TIME,
"Log all queries that have taken more than long_query_time seconds to execute to file.",
(gptr*)&global_system_variables.long_query_time,
...
...
@@ -4768,14 +4793,14 @@ value. Will also apply to relay logs if max_relay_log_size is 0. \
"Each thread that does a sequential scan allocates a buffer of this size for each table it scans. If you do many sequential scans, you may want to increase this value.",
"Make all tables readonly, with the exception for replication (slave) threads and users with the SUPER privilege",
(gptr*)&opt_readonly,
(gptr*)&opt_readonly,
0,GET_BOOL,NO_ARG,0,0,1,0,1,0},
{"read_rnd_buffer_size",OPT_RECORD_RND_BUFFER,
"When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks. If not set, then it's set to the value of record_buffer.",