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2026-07-27 - 14:12
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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 Mon Jul 27, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204938299980,79cyclictest2127761-21wc21:30:182
2049382997537,19cyclictest2167481-21cut22:45:022
2049382997233,39cyclictest0-21swapper/200:26:542
2049382996527,38cyclictest0-21swapper/223:10:382
204938599645,19cyclictest0-21swapper/523:35:195
2049382996021,39cyclictest0-21swapper/220:17:342
204938199591,19cyclictest0-21swapper/120:30:151
204938199590,35cyclictest0-21swapper/122:15:161
2049382995818,20cyclictest2174069-21if_eno222:55:152
204938299580,38cyclictest2187949-21wc23:20:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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