<html><body><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div>Hi,<br></div><div><br></div><div>The basic patches for md-cache and integrating it with cache-invalidation is merged in master. You could try master build and enable the following settings, to see if there is any impact on tiering performance at all:<br></div><div><div><span class="author-g-i3phb9lqw582z122zx4n"><br></span></div><div id="magicdomid3"><span class="author-g-i3phb9lqw582z122zx4n"># gluster volume set <volname> performance.stat-prefetch on</span></div><div id="magicdomid4"><span class="author-g-i3phb9lqw582z122zx4n"># gluster volume set <volname> features.cache-invalidation on</span></div><div id="magicdomid5"><span class="author-g-i3phb9lqw582z122zx4n"># gluster volume set <volname> performance.cache-samba-metadata on</span></div><div id="magicdomid6"><span class="author-g-i3phb9lqw582z122zx4n"># gluster volume set <volname> performance.md-cache-timeout 600</span></div><div id="magicdomid7"><span class="author-g-i3phb9lqw582z122zx4n"># gluster volume set <volname> features.cache-invalidation-timeout 600</span></div><div><br></div><div id="magicdomid8">Note: It has to be executed in the same order.<br></div><div><br></div><div>Tracker bug: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1211863">https://bugzilla.redhat.com/show_bug.cgi?id=1211863</a><br></div><div>Patches: <a href="http://review.gluster.org/#/q/status:open+project:glusterfs+branch:master+topic:bug-1211863">http://review.gluster.org/#/q/status:open+project:glusterfs+branch:master+topic:bug-1211863</a><br></div><div><br></div><div>Thanks,<br></div><div>Poornima<br></div></div></div></body></html>