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2026-07-07 - 09:53
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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 rackbslot7.osadl.org (updated Tue Jul 07, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26813214210,17sleep10-21swapper/118:52:561
280399912757,12cyclictest18691-21systemd-run00:07:350
280399912757,12cyclictest18691-21systemd-run00:07:350
280399911952,11cyclictest0-21swapper/023:07:550
3018821110,6sleep230184-21ntp_states21:43:062
280459911134,31cyclictest0-21swapper/119:47:361
280459910932,40cyclictest9855-21sh22:57:561
280399910951,9cyclictest28204-21kworker/u17:1+flush-179:021:43:020
2778921046,77sleep00-21swapper/018:56:220
280459910374,17cyclictest3879-21sh22:47:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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