On 07/19/2012 08:57 AM, Vijay Bellur wrote: > On 07/19/2012 01:46 AM, Andreas Kurz wrote: >> Hi, >> >> I'm running GlusterFS 3.2.6 in AWS on CentOS 6.2, running a >> distributed/replicated setup. >> >> Type: Distributed-Replicate >> Status: Started >> Number of Bricks: 4 x 2 = 8 >> >> Whenever geo-replication is activated, the corresponding glusterfs >> process on the server starts eating memory (and using lot of cpu) until >> oom killer strikes back. >> >> This happens once user starting to change files via glusterfs mount and >> gsyncd starts crawling through the directory tree looking for changes. >> Network traffic between the servers is quite high, typically 10Mbit/s >> ... the vast majority are lookups and getxattr request from the server >> running geo-replication. >> >> I also created a state dump (5MB bzip2 archive) of this glusterfs >> process when eating about 9GB if that is needed for debugging I can >> upload it somewhere (Bugzilla?). Dropping dentries and inodes reclaims >> about 1GB. >> >> Any ideas? A bug? Any recommended tunings, maybe a gsyncd option? I >> changed these values: >> >> performance.stat-prefetch: off >> performance.quick-read: off >> performance.cache-refresh-timeout: 1 >> performance.read-ahead: off >> geo-replication.indexing: on >> nfs.disable: on >> network.ping-timeout: 10 >> performance.cache-size: 1073741824 >> > > > Can you also try with performance.io-cache being set to off? If that > doesn't show any improvement, please raise a bug and attach the > statedump to it. Done ... https://bugzilla.redhat.com/show_bug.cgi?id=841617 Thanks! Regards, Andreas > > Thanks, > Vijay > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://gluster.org/cgi-bin/mailman/listinfo/gluster-users -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 222 bytes Desc: OpenPGP digital signature URL: <http://gluster.org/pipermail/gluster-users/attachments/20120719/a55b73ac/attachment.pgp>
