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2026-07-24 - 04:07
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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 Fri Jul 24, 2026 00:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2865990998325,39cyclictest1086-21runrttasks00:04:460
2865990997838,20cyclictest2992863-21sed23:00:010
286599099780,59cyclictest2979247-21systemctl22:35:010
2865990997556,19cyclictest3046559-21strings00:35:190
2865994997414,59cyclictest0-21swapper/421:35:164
2865990997335,38cyclictest0-21swapper/021:25:220
2865990997214,19cyclictest2892684-21ntpq19:55:210
2865993997113,39cyclictest52-21ksoftirqd/322:35:153
2865990997012,39cyclictest2986154-21sed22:45:190
2865990996911,39cyclictest2878508-21ntpq19:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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