[pmg-devel] [PATCH pmg-docs] bump minimum memory requirement

[Stoiko Ivanov]

On Wed, 26 Feb 2025 15:53:49 +0100
Thomas Lamprecht <t.lamprecht at proxmox.com> wrote:

> Am 26.02.25 um 15:36 schrieb Stoiko Ivanov:
> > On Wed, 26 Feb 2025 15:24:51 +0100
> > Thomas Lamprecht <t.lamprecht at proxmox.com> wrote:
> >   
> >> Am 26.02.25 um 15:07 schrieb Dominik Csapak:  
> >>> since a while, we need more than 4 GiB memory for pmg, because
> >>> clamd/clamav requires more than before.    
> >>
> >> But only for ZFS where by default ARC takes up half of memory?  
> > 2G Ram only does not work too well with clamav (maybe after/when
> > updating only) - at least on my test-containers, where ARC should not be
> > counted towards their cgroup memory limit I've seen a few OOM-kills of
> > clamav when setting 2G IIRC.  
> 
> 
> Looking at an installed system here and following your and Gabriel's
> reply it would look like we should increase the minimum requirement to
> 2.5 GiB and keep 4 GiB for recommended minimum ones.
> 
> As the minimum requirement basically should cover the needs to get
> it installed and up and running. I did some heavy testing with millions
> of mails per day on PMG installations with 4 GiB of memory, worked out
> fine. One of our production PMGs also has just 4 GiB total memory, while
> the other has 8 GiB but hovers around 3.8 - 3.9 GiB usage, so I really
> do not see why we should increase the recommended memory to 6 GiB...

2.5 GiB as minimum should work as well (after checking a few systems with
ClamAV running) - and I see the point of minimum meaning minimum

as for the recommended - that depends a bit if you have other signatures
enabled (securite raises this a bit), or another antivirus running - and
if we want to cover that in the recommended setting - then I'd say 5G (if
only to not have to change that again when clamAV signatures grow some
more).