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2026-09-25 - 00:28
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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
Characteristics of the 20 highest latencies:
System rack1slot1.osadl.org (updated Thu Sep 24, 2026 12:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38862210170,25sleep00-21swapper/007:06:190
38752208175,21sleep10-21swapper/107:06:121
38572206161,31sleep30-21swapper/307:05:583
39702200160,26sleep20-21swapper/207:07:262
44722620,0sleep00-21swapper/011:37:460
4256991312,1cyclictest9-21ksoftirqd/007:54:150
426099120,11cyclictest0-21swapper/112:15:571
4256991211,1cyclictest9-21ksoftirqd/008:20:010
4287991110,1cyclictest35-21ksoftirqd/310:20:003
427899110,3cyclictest0-21swapper/210:59:342
427899110,0cyclictest0-21swapper/211:58:432
425699112,4cyclictest8133-21sed08:25:000
4256991110,1cyclictest9-21ksoftirqd/012:05:120
425699110,7cyclictest11646-21apt-get09:30:110
428799109,1cyclictest35-21ksoftirqd/312:20:003
428799109,1cyclictest35-21ksoftirqd/312:10:183
428799109,1cyclictest35-21ksoftirqd/310:45:133
428799109,1cyclictest35-21ksoftirqd/309:55:003
428799108,1cyclictest35-21ksoftirqd/312:20:113
428799108,1cyclictest35-21ksoftirqd/311:45:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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