<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1423726434056_5540"><span>Dear Pranith</span></div><div dir="ltr"><br><span></span></div><div id="yui_3_16_0_1_1423726434056_5724" dir="ltr"><span id="yui_3_16_0_1_1423726434056_5725">I would be interested to know what the cluster.ensure-durability off option does, could you explain or point to the documentation?</span></div><div id="yui_3_16_0_1_1423726434056_5727" dir="ltr"><br><span id="yui_3_16_0_1_1423726434056_5725"></span></div><div id="yui_3_16_0_1_1423726434056_5728" dir="ltr"><span id="yui_3_16_0_1_1423726434056_5725">Regards</span></div><div id="yui_3_16_0_1_1423726434056_5729" dir="ltr"><span id="yui_3_16_0_1_1423726434056_5725">ML</span></div> <div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <font size="2" face="Arial"> On Thursday, February 12, 2015 8:24 AM, Pranith Kumar Karampuri <pkarampu@redhat.com> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><br clear="none">On 02/12/2015 04:37 AM, Nico Schottelius wrote:<br clear="none">> Hello,<br clear="none">><br clear="none">> switching from 3.4.2 to 3.6.2 reduces our average test performance dramatically.<br clear="none">><br clear="none">> Our test setup: directly connected 1 GBit/s hosts setup with:<br clear="none">><br clear="none">> rm -rf /home/gluster/.glusterfs/<br clear="none">> rm /home/gluster/*<br clear="none">> setfattr -x trusted.glusterfs.volume-id /home/gluster/<br clear="none">> setfattr -x trusted.gfid /home/gluster/<br clear="none">> gluster volume create xfs-plain replica 2 transport tcp vmhost1-cluster1:/home/gluster vmhost2-cluster1:/home/gluster<br clear="none">> gluster volume start xfs-plain<br clear="none">><br clear="none">> Afterwards we run our near real world test<br clear="none">><br clear="none">> mount -t glusterfs vmhost1-cluster1:/xfs-plain /mnt/gluster/<br clear="none">> while true; do dd if=redmine-from-ceph-20150204 of=/mnt/gluster/testvm bs=1M; rm /mnt/gluster/testvm; done<br clear="none">><br clear="none">> The results are<br clear="none">><br clear="none">> 3.4.2: ~71-72 MiB/s [ubuntu 14.04]<br clear="none">> 3.6.2: ~59-64 MiB/s [gluster-3.6 ppa]<br clear="none">><br clear="none">> We have removed 3.6.2 and re-installed 3.4.2 and can consistently reproduce<br clear="none">> these numbers over hours of testing.<br clear="none">Could you repeat the test on 3.6.2 with 'volume set <volname> <br clear="none">cluster.ensure-durability off' option and post the results.<br clear="none"><br clear="none">Pranith<div class="yqt9599502956" id="yqtfd71438"><br clear="none">><br clear="none">> Is there any configuration change that we need to incorporate to run<br clear="none">> 3.6.2 faster or is this a known problem?<br clear="none">><br clear="none">> Cheers,<br clear="none">><br clear="none">> Nico<br clear="none">><br clear="none"><br clear="none">_______________________________________________<br clear="none">Gluster-users mailing list<br clear="none"><a shape="rect" ymailto="mailto:Gluster-users@gluster.org" href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br clear="none"><a shape="rect" href="http://www.gluster.org/mailman/listinfo/gluster-users" target="_blank">http://www.gluster.org/mailman/listinfo/gluster-users</a><br clear="none"></div><br><br></div> </div> </div> </div> </div></body></html>