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-15065 Lustre <p>We found performance drop in a buffered write up to 15%-20% if compare with a baseline without PQ patches.</p> <p>In both cases quota was turned on (enabled="ugp") and set only one limit - block hard limit 500T. Also there was at least one OST pool without any quota limits.</p> <p>Note, this performance issue can't be seen if there is no OST pools in a system.</p> LU-15065

buffered write performance regression with PQ enabled

Bug Major Resolved Fixed Sergey Cheremencev Sergey Cheremencev Wed, 6 Oct 2021 11:44:12 +0000 Wed, 16 Mar 2022 23:49:30 +0000 Tue, 7 Dec 2021 18:37:32 +0000 Lustre 2.15.0 0 2 <p>"Sergey Cheremencev &lt;sergey.cheremencev@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/45133" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/45133</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15065" title="buffered write performance regression with PQ enabled" class="issue-link" data-issue-key="LU-15065"><del>LU-15065</del></a> quota: fix BIO write performance drop<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: d7b6c2f466a1ebda124e691f0c71ae5562c41ce3</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/45133/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/45133/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15065" title="buffered write performance regression with PQ enabled" class="issue-link" data-issue-key="LU-15065"><del>LU-15065</del></a> quota: fix BIO write performance drop<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 7b8c6cd976c584b4e965b24bf4369ded86cda811</p> <p>Landed for 2.15.0.</p> Development Rank 1|i026h3: Rank (Obsolete) 9223372036854775807 Severity