… main Innodb Tablespace. Insert Buffer size is also restricted to half of the buffer pool size (can be changed via innodb_ibuf_max_size… and all what you have will be free space, which you unfortunately can’t reclaim without reloading tour database. This is where… this problem first you can use innodb_max_purge_lag to make a threads doing modifications slow down if purge thread can’t keep up…
Post: SHOW INNODB STATUS walk through
July 17, 2006 By 40 Comments
… – it is incremented for each transaction. Purge done for trx’s n:o is number of transaction to which purge is done. Innodb can only purge old… and innodb_max_purge_lag will become your friend. “undo n:o” will show the undo log record number which purge is currently processing, if it is… to 100% hit rate. It is hard to tell what buffer pool hit rate is good enough – it is very workload dependent. Sometimes 950…
Post: Purge Thread Spiral of Death
June 10, 2010 By 5 Comments
… drops down. Here is what happens. When you have typical OLTP system with small transactions your UNDO space is small and it fits… is helpful for batch job operations as it can be controlled), using innodb_max_purge_lag or enable separate purge thread (or threads) via innodb_use_purge_thread…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…present to you what is now my …Innodb_log_waitsblogpercona.commanual Innodb_log_write_requestsblogpercona.commanual Innodb_log_writesblogpercona.commanual innodb_max_dirty_pages_pctblogpercona.commanual innodb_max_purge_lagblogpercona.commanual innodb_mirrored_log_groupsblogpercona.commanual innodb…
