Re: memory.limit_in_bytes: systemd vs lxc

[Fungi4All]

> From: jode...@gmail.com
> To: Harald Dunkel 
> debian-user@lists.debian.org
> On 25-07-17, Harald Dunkel wrote:
>> Hi Dejan,
>>
>> On Mon, 24 Jul 2017 09:43:30 +0200
>> Dejan Jocic  wrote:
>>
>> > On 24-07-17, Harald Dunkel wrote:
>> > >
>> > > Apparently systemd ignores the restricted memory. How can I tell
>> > > systemd to keep the limits?
>> > >
>> > >
>> > > Every helpful comment is highly appreciated
>> > > Harri
>> > >
>> >
>> > Never did it myself, but perhaps this can help you:
>> >
>> > https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LimitCPU=
>> >
>> >
>> Thanx for the pointer, but I think this is a misunderstanding.
>> I want systemd to keep(!) the limits, not have another local
>> config file. Systemd should not be allowed to extend the limits
>> bound to the container, no matter what.
>>
>>
>> Regards
>> Harri
> Well, I agree with you, it should not. But other solution would be to
> file bug against systemd. Hopefully, you will get answer other then "it
> is feature, not bug" :P

But is this feature trully unlimited other than by your hardware?

Re: memory.limit_in_bytes: systemd vs lxc

[Dejan Jocic]

On 25-07-17, Harald Dunkel wrote:
> Hi Dejan,
> 
> On Mon, 24 Jul 2017 09:43:30 +0200
> Dejan Jocic  wrote:
> 
> > On 24-07-17, Harald Dunkel wrote:
> > > 
> > > Apparently systemd ignores the restricted memory. How can I tell 
> > > systemd to keep the limits?
> > > 
> > > 
> > > Every helpful comment is highly appreciated
> > > Harri
> > >   
> > 
> > Never did it myself, but perhaps this can help you:
> > 
> > https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LimitCPU=
> > 
> > 
> Thanx for the pointer, but I think this is a misunderstanding.
> I want systemd to keep(!) the limits, not have another local 
> config file. Systemd should not be allowed to extend the limits 
> bound to the container, no matter what.
> 
> 
> Regards
> Harri

Well, I agree with you, it should not. But other solution would be to
file bug against systemd. Hopefully, you will get answer other then "it
is feature, not bug" :P

Re: memory.limit_in_bytes: systemd vs lxc

[Harald Dunkel]

Hi Dejan,

On Mon, 24 Jul 2017 09:43:30 +0200
Dejan Jocic  wrote:

> On 24-07-17, Harald Dunkel wrote:
> > 
> > Apparently systemd ignores the restricted memory. How can I tell 
> > systemd to keep the limits?
> > 
> > 
> > Every helpful comment is highly appreciated
> > Harri
> >   
> 
> Never did it myself, but perhaps this can help you:
> 
> https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LimitCPU=
> 
> 
Thanx for the pointer, but I think this is a misunderstanding.
I want systemd to keep(!) the limits, not have another local 
config file. Systemd should not be allowed to extend the limits 
bound to the container, no matter what.


Regards
Harri

Re: memory.limit_in_bytes: systemd vs lxc

[Dejan Jocic]

On 24-07-17, Harald Dunkel wrote:
> Hi folks,
> 
> I have to restrict memory.limit_in_bytes to 16GByte for my LXC
> containers. Problem: The containers based on Stretch and systemd 
> show 
> 
> % for i in $(find /sys/fs/cgroup/memory/lxc/lxc1 -name 
> memory.limit_in_bytes); do \
>   echo $i $(cat $i) \
> done | column -t
> /sys/fs/cgroup/memory/lxc/lxc1/memory.limit_in_bytes   17179869184
> /sys/fs/cgroup/memory/lxc/lxc1/user.slice/memory.limit_in_bytes
> 9223372036854771712
> /sys/fs/cgroup/memory/lxc/lxc1/init.scope/memory.limit_in_bytes
> 9223372036854771712
> /sys/fs/cgroup/memory/lxc/lxc1/system.slice/memory.limit_in_bytes  
> 9223372036854771712
> 
> Apparently systemd ignores the restricted memory. How can I tell 
> systemd to keep the limits?
> 
> 
> Every helpful comment is highly appreciated
> Harri
> 

Never did it myself, but perhaps this can help you:

https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LimitCPU=

memory.limit_in_bytes: systemd vs lxc

[Harald Dunkel]

Hi folks,

I have to restrict memory.limit_in_bytes to 16GByte for my LXC
containers. Problem: The containers based on Stretch and systemd 
show 

% for i in $(find /sys/fs/cgroup/memory/lxc/lxc1 -name memory.limit_in_bytes); 
do \
echo $i $(cat $i) \
done | column -t
/sys/fs/cgroup/memory/lxc/lxc1/memory.limit_in_bytes   17179869184
/sys/fs/cgroup/memory/lxc/lxc1/user.slice/memory.limit_in_bytes
9223372036854771712
/sys/fs/cgroup/memory/lxc/lxc1/init.scope/memory.limit_in_bytes
9223372036854771712
/sys/fs/cgroup/memory/lxc/lxc1/system.slice/memory.limit_in_bytes  
9223372036854771712

Apparently systemd ignores the restricted memory. How can I tell 
systemd to keep the limits?


Every helpful comment is highly appreciated
Harri