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2026-08-27 - 03:25
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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 Thu Aug 27, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23483998933,49cyclictest26-21ksoftirqd/121:46:541
23483998034,17cyclictest26-21ksoftirqd/119:45:221
23477998064,10cyclictest14-21ksoftirqd/020:45:120
23483997744,15cyclictest7625-21telnet00:30:141
2333727617,49sleep00-21swapper/019:09:580
2206927621,38sleep10-21swapper/119:05:181
23477997554,13cyclictest0-21swapper/022:20:140
23483997451,9cyclictest503-21snmpd23:16:471
23477997052,12cyclictest14-21ksoftirqd/019:40:120
23483996931,18cyclictest26-21ksoftirqd/119:40:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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