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2025-12-09 - 09:14
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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 rackeslot8.osadl.org (updated Tue Dec 09, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277894499260,14cyclictest0-21swapper/323:09:593
2778944992513,9cyclictest3074564-21turbostat22:39:593
2778944992413,8cyclictest2962134-21turbostat21:30:003
277894499241,2cyclictest0-21swapper/300:22:473
277894499211,16cyclictest3186563-21turbostat23:50:003
277894499201,16cyclictest2874631-21turbostat20:25:003
277894499201,15cyclictest3090592-21turbostat22:49:593
277894499200,18cyclictest2893152-21turbostat20:44:553
277894499200,16cyclictest3153840-21taskset23:28:393
30184042192,14sleep23018443-21apt-get22:05:122
277894499193,13cyclictest3096769-21taskset22:50:533
277894499191,2cyclictest0-21swapper/322:00:473
277894499191,15cyclictest3041470-21taskset22:18:073
277894499191,15cyclictest2849583-21turbostat20:05:013
277894499191,14cyclictest3056735-21taskset22:25:443
277894499191,14cyclictest2938190-21turbostat21:15:013
277894499191,14cyclictest2790674-21taskset19:15:213
277894499190,15cyclictest2992587-21taskset21:46:333
277894499181,14cyclictest3240464-21chrt00:25:193
277894499181,14cyclictest3192729-21taskset23:51:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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