… | | Qcache_free_memory | 147256440 | | Qcache_lowmem_prunes | 1849687 | root@server [~]# date;mysqladmin ext|awk ‘/Qcache/ && /free_blocks/ || /free_memory/ || /lowmem_prunes/’ Thu Oct 20…_memory | 147396720 | | Qcache_lowmem_prunes | 1849719 | As you can see the Qcache pruning due to low memory occurs even when there are around 140M+ free memory…
Post: MySQL Query Cache
July 27, 2006 By 69 Comments
… and watch Qcache_free_memory and Qcache_lowmem_prunes – If you’re not getting much of lowmem_prunes and free_memory stays high you…_lowmem_prunes – This one is used to identify if you have enough memory for query cache. Note however due to fragmentation lowmem_prunes… but you can enable query cache so it works faster. Low load applications – If you’re building application which is not…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…commanual long_query_timeblogpercona.commanual low_priority_updatesblogpercona.commanual lower_…commanual Opened_tablesblogpercona.commanual optimizer_prune_levelblogpercona.commanual optimizer_search_…commanual shared_memoryblogpercona.commanual shared_memory_base_nameblogpercona.commanual show_slave…
Post: Shard-Query adds parallelism to queries
November 15, 2010 By 16 Comments
…recent optimizations to MySQL still leave a lot of low hanging fruit where these are concerned. This is …by month which means that MySQL can use partition pruning to reduce the amount of data which must …CPUs will help only until we run out of memory bandwidth. Test #2 My second test involved the next…
Comment: MySQL Server Memory Usage
September 1, 2006 By 18 Comments
…’ ‘Qcache_free_blocks’, ’136′ ‘Qcache_free_memory‘, ’10272736′ ‘Qcache_hits’, ’14774371′ ‘Qcache_inserts’, ’83902401′ ‘Qcache_lowmem_prunes‘, ’4314′ ‘Qcache_not_cached’, ’294363493…_concurrency=64 # Default is 8 wich is a way to low. Puhhhhh! That was alot of text. Could someone please help…
