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2026-03-19 - 23:49
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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 Mar 19, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15240662265187,28sleep00-21swapper/007:09:210
15239802262187,27sleep10-21swapper/107:08:271
179699840,4rtkit-daemon1795-21rtkit-daemon11:24:470
179699740,4rtkit-daemon1795-21rtkit-daemon07:39:161
179699540,3rtkit-daemon1795-21rtkit-daemon10:54:561
179699530,3rtkit-daemon1795-21rtkit-daemon09:19:311
179699520,4rtkit-daemon1795-21rtkit-daemon09:30:230
179699500,4rtkit-daemon1795-21rtkit-daemon11:03:550
179699500,3rtkit-daemon1795-21rtkit-daemon09:57:570
179699490,4rtkit-daemon1795-21rtkit-daemon07:24:431
179699480,3rtkit-daemon1795-21rtkit-daemon08:56:181
152424799445,13cyclictest1542128-21grep07:50:241
152424799439,13cyclictest1662802-21sh11:15:211
1524247994313,13cyclictest1686756-21fschecks_count11:50:151
152424799425,11cyclictest1619053-21latency_hist10:15:001
152424799418,9cyclictest1673217-21/usr/sbin/munin11:30:181
152424799418,12cyclictest1608631-21apt-get10:00:141
152424799417,12cyclictest1572580-21diskmemload11:40:201
152424799416,14cyclictest1638076-21ntpq10:40:191
152424799416,13cyclictest1648016-21cstates10:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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