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2026-05-14 - 07:34
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackcslot4.osadl.org (updated Thu May 14, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31972822269209,46sleep10-21swapper/119:07:071
31972082267189,28sleep00-21swapper/019:06:190
319833121260,4sleep13197800-21/usr/sbin/munin19:10:181
33480802740,4sleep13347962-21python323:25:011
179699620,6rtkit-daemon3245923-21cron21:09:591
179699620,4rtkit-daemon1795-21rtkit-daemon23:37:480
179699610,5rtkit-daemon3225957-21apt-get20:20:001
179699610,4rtkit-daemon1795-21rtkit-daemon19:41:351
34003472600,5sleep10-21swapper/100:35:141
179699560,4rtkit-daemon1795-21rtkit-daemon19:50:231
179699560,3rtkit-daemon0-21swapper/119:37:521
179699550,4rtkit-daemon1795-21rtkit-daemon23:26:291
179699540,4rtkit-daemon0-21swapper/100:32:461
179699540,3rtkit-daemon0-21swapper/100:26:141
179699540,3rtkit-daemon0-21swapper/100:17:221
179699530,4rtkit-daemon1795-21rtkit-daemon23:36:431
179699530,3rtkit-daemon0-21swapper/122:29:441
179699520,3rtkit-daemon1795-21rtkit-daemon23:27:530
179699510,23rtkit-daemon3197695-21cyclictest00:21:311
179699500,3rtkit-daemon0-21swapper/120:26:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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