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2026-04-12 - 11:36
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Sun Apr 12, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269389910610,52cyclictest0-21swapper/022:20:130
269389910610,52cyclictest0-21swapper/022:20:130
269429910585,13cyclictest26-21ksoftirqd/119:35:121
26938991027,54cyclictest0-21swapper/000:00:130
2665329530,54sleep10-21swapper/119:08:541
262092910,6sleep126207-21grep22:05:361
325812890,6chrt32569-21apt-get22:25:150
26942998762,11cyclictest26-21ksoftirqd/119:15:101
26942998353,15cyclictest26-21ksoftirqd/121:05:131
26942998341,35cyclictest0-21swapper/121:00:121
26942998259,13cyclictest26-21ksoftirqd/120:55:141
26942998158,11cyclictest26-21ksoftirqd/123:55:251
26942998153,17cyclictest26-21ksoftirqd/121:40:151
2655428135,28sleep00-21swapper/019:07:500
26942997851,17cyclictest26-21ksoftirqd/100:35:141
26942997751,14cyclictest26-21ksoftirqd/119:55:131
26942997746,17cyclictest26-21ksoftirqd/123:35:121
183072770,9chrt0-21swapper/020:15:040
26942997626,44cyclictest0-21swapper/100:30:151
26942997447,15cyclictest13250irq/23-ehci_hcd20:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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