Backup jobs taking too much hd bandwidth

Dec 17, 2021
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Hi.

My setup includes a Proxmox VE 6.4-13 server and a Proxmox Backup server 2.1-5. In both machines are sata drives, due to budget constraints.

I have deployed a container with PostgreSQL with 30 databases and 30 containers with Tomcat and a custom made application.

We are using this setup mostly for testing.

There's a backup job every night for the PostgrSQL container. The testing containers are dataless so just a weekly backup is launched for them.

What I have noticed is that any type of backup job is having heavy impact on the testing servers response time. After some analysis the slowness comes from the PostgreSQL server.

It looks like the backup job is taking most of the hd bandwidth.

I have looking for a way to reduce the IO priority for the backup jobs but without success.

Is there any way of reducing the io priority of the backup jobs? Any other advice on how to reduce the impact of the backup jobs?

Thanks in advance.
Javier Vilarroig.
 

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