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2026-01-06 - 22:21
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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 Tue Jan 06, 2026 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
491228523,51sleep10-21swapper/107:06:121
491228523,51sleep10-21swapper/107:06:121
5455998152,16cyclictest0-21swapper/009:50:120
5457997948,9cyclictest500-21snmpd10:09:101
369727927,39sleep00-21swapper/007:05:070
369727927,39sleep00-21swapper/007:05:070
5455997853,13cyclictest14-21ksoftirqd/009:40:110
145612780,7sleep00-21swapper/010:35:420
5455997753,11cyclictest14-21ksoftirqd/008:15:140
234382770,9sleep00-21swapper/009:30:170
5455997643,18cyclictest14-21ksoftirqd/009:45:140
165762750,16sleep1251rcuc/109:10:231
5455997412,18cyclictest0-21swapper/007:30:120
5457997231,9cyclictest26-21ksoftirqd/109:00:011
5455997214,52cyclictest0-21swapper/012:20:130
5455996939,17cyclictest0-21swapper/012:10:260
5455996937,17cyclictest14-21ksoftirqd/009:05:130
545799683,43cyclictest7358-21python310:15:331
545799683,43cyclictest7358-21python310:15:331
545799682,52cyclictest21866-21uname09:25:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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