Tag - Disk Performance

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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Open Source Databases on Big Machines: Disk Speed and innodb_io_capacity

In this blog post, I’ll look for the bottleneck that prevented the performance in my previous post from achieving better results.
The powerful machine I used in the tests in my previous post has a comparatively slow disk, and therefore I expected my tests would hit a point when I couldn’t increase performance further due to the disk speed.
Hardware […]

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Jeremy Cole on MySQL Replication

Jeremy Cole recently posted very nice post about MySQL Replication Performance. There are however few points I should comment on.

Jeremy Speaks about MyISAM and Innodb in the same terms, in fact they are quite different for Replication. As you probably know MyISAM uses buffered IO so if master crashes you’re out of sync […]

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