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2026-05-01 - 15:53
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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
Characteristics of the 20 highest latencies:
System rackdslot3.osadl.org (updated Fri May 01, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491205172,22phc2sys0-21swapper/307:07:313
139772202169,22sleep20-21swapper/207:07:332
139762202169,22sleep10-21swapper/107:07:331
140632198165,22sleep00-21swapper/007:08:390
139391750,1ptp4l391rcuc/309:20:223
1446799700,2cyclictest0-21swapper/110:16:131
14466996812,16cyclictest18340-21cat07:15:260
66412620,2sleep00-21swapper/009:05:250
1446899621,58cyclictest21363-21kworker/2:109:05:242
1446799620,60cyclictest0-21swapper/110:21:131
234792590,1sleep20-21swapper/207:25:262
6312580,1sleep1630-21entropy11:10:151
280282530,2sleep10-21swapper/112:05:261
1446899531,50cyclictest21363-21kworker/2:108:15:332
304312510,2sleep00-21swapper/008:50:130
1446999505,6cyclictest41-21ksoftirqd/311:30:203
1446999481,4cyclictest0-21swapper/312:25:243
1446699457,3cyclictest6302entropy11:10:140
1446999440,15cyclictest6263-21grep09:05:223
14468994416,27cyclictest0-21swapper/208:00:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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