[lxc-users] High Memory utilization with lxc containers

[Ajith Adapa]

Hi,

Seems the situation is better than earlier as the amount of free ram is
reduced only from 1.5GB to 1.1Gb. But still systemd-journald is the culprit
..

[root at blrlt1144 ~]# ps -eo pmem,pcpu,vsize,pid,cmd | sort -k 1 -nr
 4.0  0.0 171796   412 /usr/lib/systemd/systemd-journald
 1.2  0.0 325164   555 /usr/bin/python /usr/sbin/firewalld --nofork
 0.6  0.0 511304  1349 /usr/lib/polkit-1/polkitd --no-debug
 0.6  0.0 102340  1345 /sbin/dhclient -H blrlt1144 -1 -q -lf /var/lrbr0

Regards,
Ajith



On Sat, Jul 5, 2014 at 4:19 PM, István Király <LaKing at d250.hu> wrote:

> hi, ..
>
> systemd-journald is not really fixed yet, it uses up CPU, and resources.
>
> systemctl mask systemd-journald
>
> .. and then reboot your containers.
>
> Greetings,..
>
>
> On Sat, Jul 5, 2014 at 12:19 PM, Ajith Adapa <ajith.adapa at gmail.com>
> wrote:
>
>> I mean there is around 1.5GB RAM freely available when I just start
>> the containers.
>>
>> KiB Mem:   2025228 total,   593388 used,  1431840 free,    36708 buffers
>> KiB Swap:  2129916 total,        0 used,  2129916 free.   394116 cached
>> Mem
>>
>> Regards,
>> Ajith
>>
>> On Sat, Jul 5, 2014 at 3:33 PM, Ajith Adapa <ajith.adapa at gmail.com>
>> wrote:
>> > Hi,
>> >
>> > I am not exactly sure if LXC is the reason but atleast I am seeing
>> > that memory is exhausted after running lxc containers for more than a
>> > day.
>> >
>> > Setup information:
>> > Guest VM running Fedora 20 with 2GB RAM and 4 logical cores assigned.
>> > It is only used for running LXC containers. lxc version 1.0.3
>> >
>> > I have 4 containers created using the default templates. When I
>> > started all the containers the amount of free ram available is around
>> > 500MB (As per the output from top).
>> >
>> > After 24 hours, I have got only 100MB free as per top command output.
>> > I am not starting any process inside lxc-containers after starting
>> > them.
>> >
>> > # lxc-ls -f
>> > NAME        STATE    IPV4         IPV6  AUTOSTART
>> > -------------------------------------------------
>> > centostest  RUNNING  10.12.4.101  -     NO
>> > debiantest  RUNNING  10.12.4.117  -     NO
>> > f19i686     RUNNING  10.12.4.122  -     NO
>> > ubuntu      RUNNING  10.12.4.131  -     NO
>> >
>> > As per below output systemd-journald seems the culprit but I am not
>> sure why.
>> >
>> > # ps -eo pmem,pcpu,vsize,pid,cmd | sort -k 1 -nr | head -5
>> >  2.7  0.0 124036  1997 /usr/lib/systemd/systemd-journald
>> >  1.2  0.0 325168   558 /usr/bin/python /usr/sbin/firewalld --nofork
>> --nopid
>> >  0.6  0.0 511304  1348 /usr/lib/polkit-1/polkitd --no-debug
>> >  0.6  0.0 102340  1342 /sbin/dhclient -H blrlt1144 -1 -q -lf
>> > /var/lib/dhclient/dhclient--virbr0.lease -pf
>> > /var/run/dhclient-virbr0.pid virbr0
>> >  0.4  0.0  40636     1 /usr/lib/systemd/systemd --switched-root
>> > --system --deserialize 26
>> >
>> > Have anyone faced similar issue ?
>> >
>> > Regards,
>> > Ajith
>> _______________________________________________
>> lxc-users mailing list
>> lxc-users at lists.linuxcontainers.org
>> http://lists.linuxcontainers.org/listinfo/lxc-users
>>
>
>
>
> --
> Király István
> +36 209 753 758
> LaKing at D250.hu
>  <http://d250.hu>
>
> _______________________________________________
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