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-11548] increase default readahead tunables to match common settings https://jira.whamcloud.com/browse/LU-11548 Lustre <p>It is commonly recommended to increase the readahead tunables for clients, since the current defaults are too small, having been set several years ago for slower networks and servers.</p> <p>Increase the readahead defaults to better match values that are recommended today:</p> <ul class="alternate" type="square"> <li><tt>read_ahead_max_mb</tt> increased from 64MB 1GB by default (or 1/32 RAM, whichever is less)</li> <li><tt>read_ahead_per_file_max_mb</tt> is increased from 64MB to 128MB</li> </ul> LU-11548 increase default readahead tunables to match common settings Bug Minor Resolved Fixed Wang Shilong Andreas Dilger Fri, 19 Oct 2018 07:36:23 +0000 Wed, 17 Feb 2021 21:08:02 +0000 Wed, 17 Feb 2021 21:08:02 +0000 Lustre 2.14.0 0 5 <p>Andreas Dilger (adilger@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/33400" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33400</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11548" title="increase default readahead tunables to match common settings" class="issue-link" data-issue-key="LU-11548"><del>LU-11548</del></a> llite: increase readahead default values<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 56373521259f37229cd205210841104b5715e7d7</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/33400/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33400/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11548" title="increase default readahead tunables to match common settings" class="issue-link" data-issue-key="LU-11548"><del>LU-11548</del></a> llite: increase readahead default values<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 4b47ec5a8e68950ced4895e1ccfdf2254c016194</p> <p>Landed for 2.14</p> Related Development Rank 1|i004l3: Rank (Obsolete) 9223372036854775807 Severity