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2025-11-25 - 10:26
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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 Tue Nov 25, 2025 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1916088996729,19cyclictest16-21ksoftirqd/021:10:170
1916093996344,19cyclictest0-21swapper/522:32:085
1916093995738,0cyclictest691ktimers/523:21:385
1916091995213,39cyclictest0-21swapper/323:25:173
1916094995113,19cyclictest0-21swapper/623:30:186
1916091995133,18cyclictest0-21swapper/319:40:173
1916090995113,38cyclictest0-21swapper/222:05:162
1916090995113,19cyclictest0-21swapper/200:15:182
1916095995031,19cyclictest0-21swapper/700:30:207
1916095995012,19cyclictest0-21swapper/719:45:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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