2017/10/08 phpcon 2017 https://joind.in/event/japan-php-conference-2017/session05-mysqlRead less
![片手間MySQLチューニング戦略](https://cdn-ak-scissors.b.st-hatena.com/image/square/538d6b3d421ff7a6f2bde1a53b583ca9bcf751fd/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fsparsetimemysqltuning-171008065714-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)
I have for some years been running the queries of the DBT-3 benchmark, both to verify the effect of new query optimization features, and to detect any performance regressions that may have been introduced. However, I have had issues with getting stable results. While repeated runs of a query is very stable, I can get quite different results if I restart the server. As an example, I got a coefficie
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