Re: Memory upgrade

On 10/16/24 22:37, Thomas Frohwein wrote:
> On Tue, 15 Oct 2024 16:08:03 +0200
> Christian Schulte <cs@schulte.it> wrote:
>
>> On 10/15/24 15:09, Claudio Jeker wrote:
>>> On Tue, Oct 15, 2024 at 02:35:03PM +0200, Christian Schulte wrote:
>>>> 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.
>>>
>>> Please read again. You are out of memory below 4GB (dma reachable
>>> physical memory). The pagedaemon does a very poor job in that case
>>> and this is what you see. It is a known issue and a fix will
>>> eventually emerge.
>>>
>>> If the problem was trivial it would have been fixed already.
>>
>> I am not around here for working on things a chimpanzee could be
>> trained to do.
>>
>
> You are overstepping and have been for a while. If you want any help,
> better watch your tone.
>

Sorry. Next time I am going to reach out on any lists here, I will save
the mail as a draft, take a sleep and read it again before sending.
Seems a lot of devs around here know each other personally. That's of
course a very big advantage. That line above from me really is an
insider joke I did not even notice not well known. It should have made
you laugh. It did not. My fault.

--
Christian