Whamcloud Community JIRA https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 [LU-15894] Range locking in ofd is no longer needed https://jira.whamcloud.com/browse/LU-15894 Lustre <p>Range locking in ofd is no longer needed. It can unnecessarily serialize I/O under certain load.</p> <p>A patch will be uploaded shortly.</p> LU-15894 Range locking in ofd is no longer needed Task Minor Resolved Fixed Andrew Perepechko Andrew Perepechko Thu, 26 May 2022 17:54:43 +0000 Tue, 17 Jan 2023 14:09:21 +0000 Tue, 12 Jul 2022 22:06:21 +0000 Lustre 2.16.0 0 4 <p>"Andrew Perepechko &lt;andrew.perepechko@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/47466" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/47466</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15894" title="Range locking in ofd is no longer needed" class="issue-link" data-issue-key="LU-15894"><del>LU-15894</del></a> ofd: revert range locking in ofd<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: cc86d0f60bb46c33be84e8dc7b0083b365f99161</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/47466/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/47466/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15894" title="Range locking in ofd is no longer needed" class="issue-link" data-issue-key="LU-15894"><del>LU-15894</del></a> ofd: revert range locking in ofd<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: a21ce928aa641cbfacb9dde74e4be1cd1b658fb0</p> <p>Landed for 2.16</p> <p>Do you plan to merge this one to b2_15 as well as 301d76a711 is already there?</p> <p>More info</p> <p>We are using 2_15 with<br/> <a href="https://jira.whamcloud.com/browse/LU-15894" title="Range locking in ofd is no longer needed" class="issue-link" data-issue-key="LU-15894"><del>LU-15894</del></a> ofd: revert range locking in ofd<br/> <a href="https://jira.whamcloud.com/browse/LU-16286" title="nodelalloc optimization is missing for RHEL8 kernels causing performance drop" class="issue-link" data-issue-key="LU-16286"><del>LU-16286</del></a> ldiskfs: reimplement nodelalloc optimization <br/> on our NVME servers what increased fio 4k-rand-write test from 4k iops to 68-100k</p> <p>before<br/> randwrite-4k: (groupid=0, jobs=32): err= 0: pid=887088: Wed Dec 14 15:06:43 2022<br/>   write: IOPS=4823, BW=18.8MiB/s (19.8MB/s)(4678MiB/248288msec); 0 zone resets<br/>    bw (  KiB/s): min= 3056, max=392881, per=100.00%, avg=61835.30, stdev=1467.54, samples=4847</p> <p>after  patching<br/> randwrite-4k: (groupid=0, jobs=32): err= 0: pid=530015: Mon Jan 16 14:26:16 2023<br/>   write: IOPS=68.6k, BW=268MiB/s (281MB/s)(62.9GiB/240336msec); 0 zone resets</p> Development Rank 1|i02qxb: Rank (Obsolete) 9223372036854775807