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2026-03-13 - 20:23
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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 Fri Mar 13, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55729237,38sleep10-21swapper/107:08:101
76627819,49sleep00-21swapper/007:09:510
930997635,17cyclictest26-21ksoftirqd/107:38:081
930997233,15cyclictest500-21snmpd09:48:231
92499727,56cyclictest31566-21apt-get11:35:120
924997227,9cyclictest14-21ksoftirqd/008:25:300
320702720,16chrt261ksoftirqd/111:35:251
930996835,27cyclictest26-21ksoftirqd/110:55:251
930996835,26cyclictest26-21ksoftirqd/111:15:251
924996829,8cyclictest14-21ksoftirqd/010:03:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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