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Re: Suddenly mysql server performance degraded
Posted by: Rick James
Date: November 26, 2015 10:01PM

Turn on the slowlog, lower long_query_time to 2, wait a day, run pt-query-digest, then show us the worst couple of queries. Also provide SHOW CREATE TABLE and EXPLAIN SELECT.

> One of my long query taking time in state "storing result in query cache".

SHOW VARIABLES LIKE 'query%';

Decrease query_cache_size to 50M if it is bigger than that.
Decrease query_cache_limit to 2M if it is bigger than that.

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Re: Suddenly mysql server performance degraded
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November 26, 2015 10:01PM


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