[Gluster-devel] [Gluster-users] Memory leak in GlusterFS FUSE client

[Soumya Koduri]

On 01/13/2016 04:08 PM, Soumya Koduri wrote:
>
>
> On 01/12/2016 12:46 PM, Oleksandr Natalenko wrote:
>> Just in case, here is Valgrind output on FUSE client with 3.7.6 +
>> API-related patches we discussed before:
>>
>> https://gist.github.com/cd6605ca19734c1496a4
>>
>
> Thanks for sharing the results. I made changes to fix one leak reported
> there wrt ' client_cbk_cache_invalidation' -
>      - http://review.gluster.org/#/c/13232/
>
> The other inode* related memory reported as lost is mainly (maybe)
> because fuse client process doesn't cleanup its memory (doesn't use
> fini()) while exiting the process.  Hence majority of those allocations
> are listed as lost. But most of the inodes should have got purged when
> we drop vfs cache. Did you do drop vfs cache before exiting the process?
>
> I shall add some log statements and check that part

Also please take statedump of the fuse mount process (after dropping vfs 
cache) when you see high memory usage by issuing the following command -
	'kill -USR1 <pid-of-gluster-process>'

The statedump will be copied to 'glusterdump.<pid>.dump.tim
estamp` file in /var/run/gluster or /usr/local/var/run/gluster.
Please refer to [1] for more information.

Thanks,
Soumya
[1] http://review.gluster.org/#/c/8288/1/doc/debugging/statedump.md

>
> Thanks,
> Soumya
>
>> 12.01.2016 08:24, Soumya Koduri написав:
>>> For fuse client, I tried vfs drop_caches as suggested by Vijay in an
>>> earlier mail. Though all the inodes get purged, I still doesn't see
>>> much difference in the memory footprint drop. Need to investigate what
>>> else is consuming so much memory here.
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