Re: Memory upgrade

On Tue, 15 Oct 2024 12:28:20 +0200,
Christian Schulte <cs@schulte.it> wrote:
>
> On 10/15/24 12:09, Stuart Henderson wrote:
> > On 2024-10-15, Zé Loff <zeloff@zeloff.org> wrote:
> >> On Tue, Oct 15, 2024 at 10:14:42AM +0200, Christian Schulte wrote:
> >>> ulimit -d `ulimit -aH | grep data | awk '{print $2}'`
> >>> ulimit -n `ulimit -aH | grep nofiles | awk '{print $2}'`
> >
> > ulimit -d `ulimit -dH` etc... but then there's no point setting a
> > separate hard limit in login.conf.
>
> Of course. I am the only user on that system and the only limits I want
> "my" xsession to be in effect on that system are the hard limits setup
> by the kernel. Those make the system swap for no apparent reasons. So.
> Why is this thing swapping?
>
> >
> >>> data(kbytes) 134217728
> >>
> >> That's 128 GB.
> > ...
> >> I have no idea what stating "you can use 128GB of memory on this 8GB RAM
> >> + 4GB swap machine" does to the system's memory management, but I
> >> wouldn't be surprised if weird things happen.
>
> Same for me. This is the default hard limit on that system without me
> having touched anything.
>

If I assume that your user is member of staff and you use default
login.conf, when the following settings applies:

staff:\
:datasize-cur=1536M:\
:datasize-max=infinity:\
...

here, infinity means that you're using up to MAXDSIZ bytes.

I've checked vmparam.h and it is indeed 128Gb for amd64, but for i386 such
value is way lower: 3Gb.

Have I miss something?

--
wbr, Kirill