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-5545 Lustre <p>when we enable message dropping on routers, and run a simple MPI program to repeat fstat and fchmod, I saw a lot of warnings like this in log:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>Lustre: 17660:0:(client.c:304:ptlrpc_at_adj_net_latency()) Reported service time 7 &gt; total measured time 0 Lustre: 17663:0:(client.c:304:ptlrpc_at_adj_net_latency()) Reported service time 7 &gt; total measured time 0 </pre> </div></div> <p>they may be harmless, but it's better to fix them.</p> LU-5545

a lot of warnings like ptlrpc_at_adj_net_latency() Reported service time 7 > total measured time 0

Bug Minor Resolved Fixed Liang Zhen Liang Zhen Tue, 26 Aug 2014 13:43:29 +0000 Mon, 27 Apr 2015 20:51:18 +0000 Thu, 6 Nov 2014 13:47:09 +0000 Lustre 2.7.0 Lustre 2.5.4 0 6 <p>When client re-sends a request, the server will drop it if it is already in progress. Client then is measuring the service time from the sent time of the resend, while the server will report service time of original request. This may be the cause of the disparity.</p> <p>Chris, yes, that's exactly what I saw.</p> <p>Thanks Chris, patch is here: <a href="http://review.whamcloud.com/12018" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/12018</a></p> <p>patch landed</p> <p>Jian Yu (jian.yu@intel.com) uploaded a new patch: <a href="http://review.whamcloud.com/12855" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/12855</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-5545" title="a lot of warnings like ptlrpc_at_adj_net_latency() Reported service time 7 &gt; total measured time 0" class="issue-link" data-issue-key="LU-5545"><del>LU-5545</del></a> ptlrpc: false alarm in AT network latency measuring<br/> Project: fs/lustre-release<br/> Branch: b2_5<br/> Current Patch Set: 1<br/> Commit: 8a9ff75abe59667c30b76de56f7250de74b47105</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/12855/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/12855/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-5545" title="a lot of warnings like ptlrpc_at_adj_net_latency() Reported service time 7 &gt; total measured time 0" class="issue-link" data-issue-key="LU-5545"><del>LU-5545</del></a> ptlrpc: false alarm in AT network latency measuring<br/> Project: fs/lustre-release<br/> Branch: b2_5<br/> Current Patch Set: <br/> Commit: 73800aa81baeeb55038c1849e90631588a930981</p> Development Rank 1|hzwukv: Rank (Obsolete) 15448 Severity