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2026-09-04 - 05:45
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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 Sep 04, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26414109913112,79cyclictest2715092-21ntp_states21:20:227
2641410999131,59cyclictest2747564-21expr22:20:137
2641410997315,39cyclictest2778369-21ntp_states23:15:217
2641410997315,39cyclictest2696334-21grep20:45:247
2641410997214,19cyclictest0-21swapper/719:12:167
2641410997112,21cyclictest0-21swapper/719:19:037
2641410997013,18cyclictest2641402-21cyclictest21:16:127
2641410997012,19cyclictest0-21swapper/722:56:167
2641410997012,19cyclictest0-21swapper/722:02:127
2641410996911,19cyclictest0-21swapper/721:31:567
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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