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-17478 Lustre <p>Unaligned DIO/hybrid IO writes are not currently parallel, which severely limits their performance (to around 3 GiB/s with 20 GiB/s DIO).  With the fix from <a href="https://jira.whamcloud.com/browse/LU-17085" title="llite: pin_user_pages on unaligned DIO/AIO" class="issue-link" data-issue-key="LU-17085">LU-17085</a>, this becomes possible, and it turns out it can be done fairly easily.</p> LU-17478

parallelize unaligned writes

Improvement Minor Open Unresolved Patrick Farrell Patrick Farrell Sat, 27 Jan 2024 21:00:23 +0000 Tue, 30 Jan 2024 04:17:50 +0000 0 4 <p>"Patrick Farrell &lt;pfarrell@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53844" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53844</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17478" title="parallelize unaligned writes" class="issue-link" data-issue-key="LU-17478">LU-17478</a> clio: parallelize unaligned DIO write copy<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: c301f9a547da2ffb8ea8e4c847dfa04f55d6592d</p> <p>"Patrick Farrell &lt;pfarrell@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53856" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53856</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17478" title="parallelize unaligned writes" class="issue-link" data-issue-key="LU-17478">LU-17478</a> osc: add dio_exts tracking<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: d6003a950c5ca6f84d78082a2830ee4c7d62f869</p> Development Rank 1|i049bb: Rank (Obsolete) 9223372036854775807 Severity