Tuning the I/O scheduler - PingDirectory

Tuning the I/O scheduler - PingDirectory - 8.3

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pingdirectory-83

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PingDirectory 8.3

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pd-83

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Use the correct I/O scheduler to increase performance and reduce the possibility of database timeouts when the system is under extreme write load.

For file systems running on an SSD or in a virtualized environment, use the noop scheduler. On some systems, such as RHEL 8.1+, this is called none. For all other systems, use the deadline scheduler.

To determine which scheduler is configured on your system, run the following command.
```
$ cat /sys/block/<block-device>/queue/scheduler
```
To change the scheduler on a running system, run the following command.
```
$ echo '<scheduler name>' > /sys/block/<block-device>/queue/scheduler
```
In the following example, the system is updated to use the deadline scheduler.
```
$ echo 'deadline' > /sys/block/sda/queue/scheduler
```
To enable the change, restart the system.

Note:
The procedure for configuring a scheduler to use at startup depends on the version of Linux. For the correct way to configure this setting, see the system documentation.