ClamAv High memory consuption, OOm killer in action

[TLoF]

Server operating system + version
Debian 11.3 64bit

Server virtualization technology used
Proxmox

KeyHelp version + build number
KeyHelp 22.0 (Build 2393)

Problem description / error messages
When the clamav update, the server run out of memory, and the OOm killer randomly kill something. If it is an fpm process it is not a problem, if it is a mysqld process it is a problem.

Expected result
Everything working normal

Actual result
Mysqld Killed by OOm killer

Steps to reproduce
4 GB ram, no swap, random event.

Additional information
Debian 11.3, fresh install, two sites, both run php7.3.

There is a new switch to ClamAV called ConcurrentDatabaseReload If it sets to no, it reduce the memory consuption on new updates. I suggest it will be a default, or a configurable item.
https://blog.clamav.net/2020/09/clamav- ... eased.html

[24unix]

If you have no option to increase RAM, use a swap partition or file of at least 8 GB.

[Alexander]

Hello,

this is not an issue of KeyHelp.

By the way, you can turn ClamAV email checks off, which should save you lots of RAM.
Go to KeyHelp Admin Area -> "Configuration" -> "Email Server" -> Uncheck the "Email virus checks" checkbox

[BasHeijermans]

You can always remove the oom-killer, then the problem is gone.

Code: Select all

apt remove oomd

And remove some databases from the database-list or disable Anti-Virus.

Then your 4GB will be more then enough.