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2026-08-23 - 01:56
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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 rack3slot6.osadl.org (updated Sun Aug 23, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189139912495,19cyclictest14-21ksoftirqd/023:55:100
1677521210,5chrt16306-21/usr/sbin/munin23:35:231
189139911689,16cyclictest14-21ksoftirqd/019:35:130
189139911011,87cyclictest0-21swapper/019:55:120
189139910611,81cyclictest0-21swapper/022:20:140
189139910510,32cyclictest0-21swapper/021:20:120
189139910470,24cyclictest14-21ksoftirqd/021:25:110
189139910412,81cyclictest0-21swapper/023:45:120
18913991039,64cyclictest0-21swapper/000:15:260
18913991037,87cyclictest5567-21apt-get00:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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