[Gluster-devel] High memory cost of glusterfsd when enable quota

[Sanoj Unnikrishnan]

Hi kinglong,

I will do this test and get back to u tomorrow.
Regards,
Sanoj

On Wed, Jun 28, 2017 at 6:23 PM, Kinglong Mee <kinglongmee at gmail.com> wrote:

> I use glusterfs quota on Centos7 with glusterfs-3.10.2-1.el7.x86_64,
> system memory is 2GB.
> My test environment is two glustefs nodes, with one 10GB disk (ext4) each.
>
> When enable quota with many files in the glusterfs, the glusterfsd in one
> node
> costs high memory towards 40%+ of 2GB, or both nodes costs high memory
> sometimes.
>
> Node one,
>    PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+
> COMMAND
>  30017 root      20   0 1487412 115528   4648 S   0.0  6.2   3:11.81
> glusterfsd
>
> The other node,
>    PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND
> 102510 root      20   0 1439044 700264   4668 S  0.0 37.5   2:31.37
> glusterfsd
>
> The reproduce is,
> # gluster volume start fsname
> # mount -t glusterfs nodename:fsname /mnt/test/
> # cp -rf linux-source /mnt/test/           <---- it's important adds many
> files before enable quota.
> # gluster volume quota fsname enable
>
> Sometime, needs disable quota and re-enable again, the high memory cost
> will appear.
>
> But, I can't find the high memory cost when debugging by valgrind,
> the memory cost will increase slowly to 10%.
>
> Any comments are welcome.
>
> thanks,
> Kinglong Mee
>
>
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