… to write all batch jobs to use Gearman MySQL UDF interface to apply update transactions to the master (but having the batch job only… take update transactions to apply and pace MySQL transactions to the real master db. You can configure multiple workers for quicker batch job… use Percona MySQL Cluster to have a dedicated master for all batch job processing and use Gearman Workers to apply updates to this…

… as increasing buffer pool size could cause performance problems. MySQL Restart MySQL Restarts may include recovery time but what is the most… seen cases when overly eager batch job doing updates from 20 threads on the master will create enough updates for a few hours… involved. In could be even system which queries mysql. I’ve seen monitoring updates which would add excessively expensive and frequent query…

… amazing MySQL manual, especially the option and variable…pages_writtenblogpercona.commanual innodb_purge_batch_sizeblogpercona.commanual innodb_purge_threadsblogpercona…_isolationblogpercona.commanual unique_checksblogpercona.commanual updatable_views_with_limitblogpercona.commanual Uptimeblogpercona…

… space (${full}%, ${avail}MB free)”>&2 exit 1 fi host=$(mysql -ss -e ‘SELECT p.HOST FROM information_schema.innodb_lock… port 3306 and port ${port} > /root/tcpdumps/`date +%s`-tcpdump & mysql -e ‘show innodb status\Gshow full processlist’ > /root/tcpdumps/`date +%s… of short, small transactions. Don’t design batch jobs that run in loops and update data, unless you make them commit between…