https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-1063 Lustre <p>with the patch above the kms value calculated more quickly because of next improvements:<br/> 1) interval tree was used for the going through the list of locks instead the direct linked list<br/> search.<br/> 2) skip the subtree when maximum value in this subtree is less then new kms<br/> 3) kms search stopped when lock with size equal to the old kms value found.</p> <p>this optimization shows speed increase from 20 to 40% according to the tests results.</p> <p><a href="https://bugzilla.lustre.org/show_bug.cgi?id=22060" class="external-link" target="_blank" rel="nofollow noopener">https://bugzilla.lustre.org/show_bug.cgi?id=22060</a> - contains the whole story</p> LU-1063

speed up kms recalculation

Improvement Minor Resolved Won't Fix Cliff White Iurii Golovach patch performance Wed, 1 Feb 2012 07:30:24 +0000 Fri, 9 May 2014 19:44:33 +0000 Fri, 9 May 2014 19:44:33 +0000 Lustre 1.8.x (1.8.0 - 1.8.5) 0 6 <p>patch is in reviewboard<br/> git push ssh://USER@review.whamcloud.com:29418/fs/lustre-release HEAD:refs/for/b1_8</p> <p>previous comment is wrong. link on the patch in the reviewboard:<br/> <a href="http://review.whamcloud.com/#change,2076" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,2076</a></p> <p>Iurii</p> <p>Is this change also required for master? If so, we would prefer to land it there first. Could you look into porting it?</p> <p>Thanks</p> <p>Peter</p> <p>Iurii,<br/> this feature looks very interesting and useful under some workloads. However, we are not landing features or significant code restructuring onto maintenance branches. New features like this should be targetted at a feature release like the upcoming 2.3 release.</p> <p>there is a kernel panic observed during the port into 2.2<br/> ticket MRP-483 was created to track this issue.</p> <p>Has a Master patch been developed for this? Is this issue abandoned? </p> <p>Xyratex-bug-id: <a href="http://jira-nss.xy01.xyratex.com:8080/browse/MRP-242" class="external-link" target="_blank" rel="nofollow noopener">MRP-242</a></p> <p>Lurii or Nathan, is there going to be a patch for Master? </p> <p>Hi Keith,</p> <p>I adopted this patch to master, but it fails on few tests. Since the bug (fixed after this optimization) was critical for 1.8 and doesn't exist in 2.x there is no rush with it. </p> <p>Answer on your question - yes, there will be a patch for master, but since it's minor priority I'll create it when I have a free time for it.</p> <p>If there is not going to be a patch for master, we should close this issue, please advise.</p> <p>I am going to close this issue for now. If there is a new patch or any further updates please re-open. </p> Bugzilla ID 22060.0 Development Rank 1|hzvy93: Rank (Obsolete) 9733 Story Points 30.0