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2025-11-16 - 05:01
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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 Nov 16, 2025 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2236721030,7chrt22365-21ntp_states22:15:411
19632210128,25sleep10-21swapper/119:07:231
1984029119,27sleep00-21swapper/019:09:040
2006099876,66cyclictest0-21swapper/019:40:180
20066998051,14cyclictest26-21ksoftirqd/120:25:151
20066997850,16cyclictest26-21ksoftirqd/121:25:131
20066997847,16cyclictest26-21ksoftirqd/123:35:161
20066997847,15cyclictest26-21ksoftirqd/120:50:161
20066997644,19cyclictest26-21ksoftirqd/121:00:141
20066997241,22cyclictest26-21ksoftirqd/119:15:151
20066997044,17cyclictest26-21ksoftirqd/121:45:161
20066997042,17cyclictest26-21ksoftirqd/122:25:161
20066997041,20cyclictest26-21ksoftirqd/120:30:181
20066997041,17cyclictest26-21ksoftirqd/121:10:131
20066997041,17cyclictest26-21ksoftirqd/121:10:131
20066997041,16cyclictest26-21ksoftirqd/119:40:161
216232690,7chrt21146-21apt-get22:15:150
20066996827,35cyclictest0-21swapper/120:05:131
20066996742,20cyclictest26-21ksoftirqd/121:20:141
20066996741,16cyclictest0-21swapper/100:30:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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