Tag - Disk I/O

Why Consumer SSD Reviews are Useless for Database Performance Use Case

Anandtech Table reviewing consumer SSD performance

If you’re reading consumer SSD reviews and using them to estimate SSD performance under database workloads, you’d better stop. Databases are not your typical consumer applications and they do not use IO in the same way.
Let’s look, for example, at this excellent AnandTech review of Samsung 960 Pro –  a consumer NVMe device that […]

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Troubleshooting hardware resource usage webinar: Q & A

Overlooked MySQL performance optimization

In this blog, I provide answers to the Q & A for the Troubleshooting hardware resource usage webinar.
First, I want to thank everybody who attended the May 26 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, […]

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

Here on the iostat is one of the popular tools and pt-diskstats tool for this purpose. The pt-diskstats tool is similar to iostat but it’s more interactive and contains extended information. pt-diskstats reports current disk activity and shows the statistics for the last second (which by default is 1 second) and will continue until […]

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