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2026-01-08 - 07:56
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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 Jan 08, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13664712281217,48sleep00-21swapper/019:09:390
13662492276195,27sleep10-21swapper/119:07:151
136661299572,7cyclictest1503822-21apt-get23:05:141
136661299572,7cyclictest1473323-21apt-get22:25:141
136661299563,9cyclictest1414754-21apt-get21:10:121
1366612995513,24cyclictest1467204-21sh22:15:581
13915302540,4sleep01391528-21fschecks_time20:10:160
136661299543,9cyclictest1442438-21apt-get21:45:121
136661299543,6cyclictest1573517-21apt-get00:35:131
136661299542,9cyclictest1511512-21apt-get23:15:111
136661299542,5cyclictest1450284-21apt-get21:55:131
179699530,4rtkit-daemon1795-21rtkit-daemon20:40:420
136661299538,3cyclictest1555567-21ssh00:10:351
136661299532,5cyclictest1426916-21apt-get21:25:121
179699510,3rtkit-daemon1795-21rtkit-daemon22:39:530
136661299512,6cyclictest1488496-21apt-get22:45:131
136661299512,5cyclictest1500080-21apt-get23:00:131
136661299511,8cyclictest1441342-21ssh21:43:221
136661299510,8cyclictest1521158-21ssh23:26:081
136661299510,5cyclictest1395141-21apt-get20:20:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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