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2026-08-31 - 17:38
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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
Characteristics of the 10 highest latencies:
System rackdslot1.osadl.org (updated Mon Aug 31, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1067421230,7sleep1483699cyclictest07:20:241
260972760,5sleep10-21swapper/111:25:201
134491610,4ptp4l0-21swapper/011:55:330
134491610,3ptp4l0-21swapper/312:30:253
134491610,2ptp4l1301-21snmpd11:48:153
134491600,3ptp4l25-21ksoftirqd/111:36:291
134491590,5ptp4l0-21swapper/308:10:123
134491590,17ptp4l2457-21apt-config10:35:013
134491580,3ptp4l0-21swapper/212:36:562
134491570,3ptp4l0-21swapper/312:10:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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