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## 11.5. File system tuning for high IO

In order to support the high IO load of small transactions from a database, the underlying file system should be tuned. Symptoms for this are low CPU load with high iowait. In this case, there are a couple of tweaks possible on Linux systems:

- Disable access-time updates: `noatime,nodiratime` flags for disk mount command or in the /etc/fstab for the database disk volume mount.
- Tune the IO scheduler for high disk IO on the database disk.

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