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2026-08-25 - 06:04
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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 rackeslot3.osadl.org (updated Tue Aug 25, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1438004996741,25cyclictest1602464-21kworker/1:023:30:141
1438004996461,2cyclictest0-21swapper/119:55:201
143800499641,61cyclictest0-21swapper/122:32:131
1438004996360,2cyclictest0-21swapper/123:42:531
1438004996247,14cyclictest1442901-21kworker/1:219:34:591
1438004996137,23cyclictest1542930-21kworker/1:022:25:151
1438004995956,2cyclictest0-21swapper/100:32:561
1438004995843,14cyclictest1463471-21kworker/1:220:35:011
1438004995843,14cyclictest1454020-21kworker/1:320:05:011
1438004995843,14cyclictest1436429-21kworker/1:319:10:001
1438004995842,15cyclictest1625241-21kworker/1:200:00:121
1438004995841,16cyclictest1558339-21kworker/1:322:45:011
1438004995839,18cyclictest3834693-1kworker/1:1H19:25:001
1438004995742,14cyclictest1542930-21kworker/1:022:24:161
1438004995742,14cyclictest1528358-21kworker/1:022:10:121
1438004995742,14cyclictest1518834-21kworker/1:122:05:181
1438004995742,14cyclictest1504024-21kworker/1:321:45:001
1438004995742,14cyclictest1478036-21kworker/1:221:17:161
1438004995742,14cyclictest1473394-21kworker/1:021:14:121
1438004995742,14cyclictest1455760-21kworker/1:020:15:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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