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Tag Archives: iostat

MySQL 101: Monitor Disk I/O with pt-diskstats

Here on the Percona Support team we often ask customers to retrieve disk stats to monitor disk IO and to measure block devices iops and latency. There are a number of tools available to monitor …

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Why %util number from iostat is meaningless for MySQL capacity planning

Earlier this month I wrote about vmstat iowait cpu numbers and some of the comments I got were advertising the use of util% as reported by the iostat tool instead. I find this number even more useless for …

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Optimizing MySQL Performance: Choosing the Right Tool for the Job
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Next Wednesday, I will present a webinar about MySQL performance profiling tools that every MySQL DBA should know. Application performance is a key aspect of ensuring a good experience for your end users. But finding and …

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