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2025-12-04 - 05:02
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackfslot7.osadl.org (updated Thu Dec 04, 2025 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
922504999436,39cyclictest1032102-21tune2fs22:20:145
922504997619,38cyclictest1090301-21timerandwakeup00:00:245
922504997437,18cyclictest691ktimers/520:10:075
922504997232,39cyclictest0-21swapper/519:21:515
922504997214,39cyclictest1024441-21ntpq22:05:225
922504997013,0cyclictest1087115-21ntpq23:55:205
922504996912,38cyclictest954726-21awk20:05:015
922504996810,39cyclictest951270-21users19:55:255
922504996628,38cyclictest0-21swapper/519:11:595
922504996021,39cyclictest982862-21sshd20:52:395
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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