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-5548 Lustre <p>ptlrpcd_check() always scan all requests on ptlrpc_request_set::set_requests and try to finish completed requests, this is low efficiency. Even worse, l_wait_event() always checks condition for twice before sleeping and one more time after waking up, which means it will call ptlrpcd_check() for three times in each loop.</p> <p>The solution is quite simple, ptlrpc_check_set() can move completed requests at head of ptlrpc_request_set::set_requests, so ptlrpcd_check doesn't need to scan all requests on a rqset anymore.</p> <p>This is an improvement for <a href="https://jira.whamcloud.com/browse/LU-5053" title="soft lockup in ptlrpcd on client" class="issue-link" data-issue-key="LU-5053"><del>LU-5053</del></a>.</p> LU-5548

avoid list scan in ptlrpcd_check

Bug Minor Resolved Fixed Liang Zhen Liang Zhen Wed, 27 Aug 2014 03:03:11 +0000 Mon, 27 Apr 2015 20:52:12 +0000 Wed, 3 Sep 2014 01:12:21 +0000 Lustre 2.7.0 Lustre 2.5.4 0 2 <p>Patch is here: <a href="http://review.whamcloud.com/#/c/11513/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/11513/</a></p> <p>patch landed</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/12265/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/12265/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-5548" title="avoid list scan in ptlrpcd_check" class="issue-link" data-issue-key="LU-5548"><del>LU-5548</del></a> ptlrpc: avoid list scan in ptlrpcd_check<br/> Project: fs/lustre-release<br/> Branch: b2_5<br/> Current Patch Set: <br/> Commit: f3c91d57afb631d9d008710b4d144734bfe97a4f</p> Development Rank 1|hzwupj: Rank (Obsolete) 15470 Severity