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

[Thomas Lamprecht]

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...