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Re: Hash and Linear Hash partition table not performing well
Posted by: Rick James
Date: December 05, 2009 11:49PM

I suspect the size of something (not sure what yet) has exceeded some cache size, and is hitting the disk harder and harder. Investigating this involves looking at cache size, engine type, data size, what you are hashing on, etc.

Please provide
* SHOW CREATE TABLE tbl\G -- engine, indexes
* SHOW TABLE STATUS LIKE 'tbl'\G -- sizes
* EXPLAIN SELECT ...\G -- clues of inefficiencies
* SHOW VARIABLES LIKE '%buffer%'; -- cache size
* EXPLAIN PARTITIONS ...
and surround them with [ code ] and [ / code ]

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Re: Hash and Linear Hash partition table not performing well
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December 05, 2009 11:49PM


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