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2026-03-23 - 13:49
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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 Mon Mar 23, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
637729620,64sleep10-21swapper/107:05:401
6957999365,15cyclictest0-21swapper/011:35:110
6957998766,10cyclictest14-21ksoftirqd/012:10:110
181912870,5chrt0-21swapper/110:40:321
6957998553,18cyclictest14-21ksoftirqd/012:00:240
6957998357,15cyclictest14-21ksoftirqd/008:05:250
695799799,35cyclictest2745-21taskset10:00:140
695799799,35cyclictest2745-21taskset10:00:130
6957997815,18cyclictest0-21swapper/009:25:150
315142780,7sleep126-21ksoftirqd/108:15:301
6957997651,15cyclictest14-21ksoftirqd/008:45:120
6961997534,12cyclictest26-21ksoftirqd/111:00:051
520427426,36sleep00-21swapper/007:05:050
6957997345,16cyclictest14-21ksoftirqd/008:15:120
160642730,4sleep10-21swapper/110:35:251
6957997246,18cyclictest14-21ksoftirqd/008:20:120
6957997246,15cyclictest14-21ksoftirqd/007:45:140
6957997245,15cyclictest14-21ksoftirqd/008:35:150
6957997242,19cyclictest14-21ksoftirqd/012:20:120
6957997242,17cyclictest0-21swapper/011:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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