Re: Memory leak in GlusterFS FUSE client

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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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