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2026-08-21 - 21:47
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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 rack1slot2.osadl.org (updated Fri Aug 21, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1495427776,0sleep20-21swapper/207:28:262
351670,0ktimersoftd/38043-21perf07:30:353
1441423534,0sleep10-21swapper/107:26:091
1490423127,0sleep00-21swapper/007:27:520
152249970,0cyclictest0-21swapper/110:46:031
4160,0ktimersoftd/00-21swapper/008:11:030
329960,0watchdog/322244-21grep12:55:583
29805060,0irq/28-eth0-rx-3900-21tr10:11:043
152259960,0cyclictest0-21swapper/211:01:142
152249965,0cyclictest9987-21grep10:35:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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