Re: cephadm and kernel memory usage

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Hi,

First, thank you for taking time to reply to me.

However, my question was not on user-space memory neither on cache usage, as I can see on my machines everything sums up quite nicely.

My question is: with packages, the non-cache kernel memory is around 2G to 3G, while with Podman usage, it is more around 10G, and it can go up to 40G-50G. Do anyone knows if this is expected and why this is the case?

Maybe this is a podman related question and ceph-dev is not the best place to ask this kind of question, but maybe someone using cephadm saw similar behavior.

Luis Domingues
Proton AG


------- Original Message -------
On Tuesday, July 25th, 2023 at 11:42, Konstantin Shalygin <k0ste@xxxxxxxx> wrote:


> Good,
> 
> > On 24 Jul 2023, at 20:01, Luis Domingues luis.domingues@xxxxxxxxx wrote:
> > 
> > Of course:
> > 
> > free -h
> > total used free shared buff/cache available
> > Mem: 125Gi 96Gi 9.8Gi 4.0Gi 19Gi 7.6Gi
> > Swap: 0B 0B 0B
> 
> 
> As we can see, actually you have ~30GiB free (9.8GiB is not used & 19GiB is a page cache)
> With this command you can determine what process actually use memory & how much
> 
> `ps -eo size,pid,user,command | \\ awk '{ hr=$1/1024 ; printf("%13.6f Mb ",hr) } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }' | \\ sort -n`
> 
> k
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