Tweaking XFS performance

When it comes to performance optimization on XFS filesystems, allocation groups are only the beginning. To maintain a high-availability PostgreSQL server, we want to get the most out of XFS. For us, this means using specific mount options.

Thankfully, unlike formatting, mount options can be changed frequently and require very little downtime. Though it isn't essential that we apply these values immediately, the options discussed in this recipe are our recommendations for this stack.

Getting ready

In order to mount an XFS filesystem, we need one to exist. Please follow the steps contained in the Formatting an XFS filesystem recipe before continuing.

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