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pmm-ras produces high CPU load

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Mikhail Shport
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kb: bug Plesk for Linux ABT: Group A

Applicable to:

  • Plesk for Linux

Symptoms

  • The server performance is low during a backup process

  • pmm-ras process produces a high CPU load:

    pmm-ras_high_cpu.JPG

Cause

The backup process intensively uses a disk subsystem which might result in a high load on servers. There is a request to optimize and improve the backup process in the future: #PPPM-6758

Resolution

Since Plesk Obsidian 18.0.26 there is a possibility to set priority for backup processes. Go to Tools & Settings > Backup Manager (under “Tools & Resources”), click “Settings” and look for the “Run scheduled backup processes with low priority” and “Run all backup processes with low priority” options.

mceclip0.png

Note: Use faster hard disk, SSD-disk or RAID-massive, or arrange subscriptions between several hardware nodes.

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