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This patch changes the following defaults:

max_dirty_pages_pct: default from 90 to 75. max allowed from 100 to 99
additional_mem_pool_size: default from 1 to 8 MB
buffer_pool_size: default from 8 to 128 MB
log_buffer_size: default from 1 to 8 MB
read_io_threads/write_io_threads: default from 1 to 4

The log file sizes are untouched because of upgrade issues

Reviewed by: Heikki
This commit is contained in:
inaam 2009-06-11 12:15:41 +00:00
parent 66d6887d53
commit 5dbf1ce63f
3 changed files with 8 additions and 8 deletions
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12
handler/ha_innodb.cc
View file

@ -9620,7 +9620,7 @@ static MYSQL_SYSVAR_STR(log_group_home_dir, innobase_log_group_home_dir,
static MYSQL_SYSVAR_ULONG(max_dirty_pages_pct, srv_max_buf_pool_modified_pct,
PLUGIN_VAR_RQCMDARG,
"Percentage of dirty pages allowed in bufferpool.",
NULL, NULL, 90, 0, 100, 0);
NULL, NULL, 75, 0, 99, 0);
static MYSQL_SYSVAR_ULONG(max_purge_lag, srv_max_purge_lag,
PLUGIN_VAR_RQCMDARG,
@ -9662,7 +9662,7 @@ static MYSQL_SYSVAR_ULONG(replication_delay, srv_replication_delay,
static MYSQL_SYSVAR_LONG(additional_mem_pool_size, innobase_additional_mem_pool_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.",
NULL, NULL, 1*1024*1024L, 512*1024L, LONG_MAX, 1024);
NULL, NULL, 8*1024*1024L, 512*1024L, LONG_MAX, 1024);
static MYSQL_SYSVAR_ULONG(autoextend_increment, srv_auto_extend_increment,
PLUGIN_VAR_RQCMDARG,
@ -9672,7 +9672,7 @@ static MYSQL_SYSVAR_ULONG(autoextend_increment, srv_auto_extend_increment,
static MYSQL_SYSVAR_LONGLONG(buffer_pool_size, innobase_buffer_pool_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"The size of the memory buffer InnoDB uses to cache data and indexes of its tables.",
NULL, NULL, 8*1024*1024L, 5*1024*1024L, LONGLONG_MAX, 1024*1024L);
NULL, NULL, 128*1024*1024L, 5*1024*1024L, LONGLONG_MAX, 1024*1024L);
static MYSQL_SYSVAR_ULONG(commit_concurrency, innobase_commit_concurrency,
PLUGIN_VAR_RQCMDARG,
@ -9692,12 +9692,12 @@ static MYSQL_SYSVAR_LONG(file_io_threads, innobase_file_io_threads,
static MYSQL_SYSVAR_ULONG(read_io_threads, innobase_read_io_threads,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of background read I/O threads in InnoDB.",
NULL, NULL, 1, 1, 64, 0);
NULL, NULL, 4, 1, 64, 0);
static MYSQL_SYSVAR_ULONG(write_io_threads, innobase_write_io_threads,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"Number of background write I/O threads in InnoDB.",
NULL, NULL, 1, 1, 64, 0);
NULL, NULL, 4, 1, 64, 0);
static MYSQL_SYSVAR_LONG(force_recovery, innobase_force_recovery,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
@ -9707,7 +9707,7 @@ static MYSQL_SYSVAR_LONG(force_recovery, innobase_force_recovery,
static MYSQL_SYSVAR_LONG(log_buffer_size, innobase_log_buffer_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
"The size of the buffer which InnoDB uses to write log to the log files on disk.",
NULL, NULL, 1024*1024L, 256*1024L, LONG_MAX, 1024);
NULL, NULL, 8*1024*1024L, 256*1024L, LONG_MAX, 1024);
static MYSQL_SYSVAR_LONGLONG(log_file_size, innobase_log_file_size,
PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,

2
mysql-test/innodb.result
View file

@ -1738,7 +1738,7 @@ count(*)
drop table t1;
SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_buffer_pool_pages_total';
variable_value
511
8191
SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_page_size';
variable_value
16384

2
srv/srv0srv.c
View file

@ -239,7 +239,7 @@ in the buffer pool to all database pages in the buffer pool smaller than
the following number. But it is not guaranteed that the value stays below
that during a time of heavy update/insert activity. */
UNIV_INTERN ulong srv_max_buf_pool_modified_pct = 90;
UNIV_INTERN ulong srv_max_buf_pool_modified_pct = 75;
/* variable counts amount of data read in total (in bytes) */
UNIV_INTERN ulint srv_data_read = 0;