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Diffstat (limited to 'docs/databases.txt')
| -rw-r--r-- | docs/databases.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/docs/databases.txt b/docs/databases.txt index aa58a2e..bc20f83 100644 --- a/docs/databases.txt +++ b/docs/databases.txt @@ -167,6 +167,10 @@ Master/Slave replication data replicated from master by disabling 'log_slave_updates'. Then, if the slave is converted to master it will automatically start logging. - - + - Further improvements with significant increases of main buffers MYSQL_INNODB_BUFFER_POOL_SIZE and + MYSQL_INNODB_LOG_FILE_SIZE + plus disabling FS caching MYSQL_INNODB_FLUSH_METHOD=ODIRECT. At maximum + I got about 12 MB/s on master and 14 MB/s on the slave (using round-robin access to the source MSSQL + databases). Both ROW and MIXED binlogs give more-or-less the same performance and memory footprint, + but it seems the CPU usage is signifanctly higher (500-800%) in MIXED mode. In ROW mode it was about + 200%.
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