Re: Memory upgrade

On 10/15/24 12:45, Claudio Jeker wrote:
> On Tue, Oct 15, 2024 at 12:28:20PM +0200, Christian Schulte 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?
>
> Because you are out of memory (most probably the usual amd64 problem of
> running out of dma reachable memory and the pagedaemon going berserk about
> that). You have plenty of ram just in the wrong spot.
>

According to the readings of top(1) or vmstat(8) I am not hitting any
physical RAM limits. Still. The system starts swapping and I am yet to
find out why it does. Maybe it just cannot fulfill requests for larger
chunks of memory but does not "tell" an application about it and just
commits itself to swapping? Makes no sense to me reading output of
top(1) or vmstat(8) displaying that the system has swapped out more than
half a GB to disk when nearly half of the RAM available to the system
(8GB) is not even wired up. The system reports nearly 4GB of physical
RAM available for allocation together with more than half of a GB
swapped out to disk. Makes no sense.

--
Christian