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2025-11-03 - 20:33
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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 Nov 03, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2363928529,44sleep10-21swapper/107:06:031
2244828031,37sleep00-21swapper/007:05:120
24194997933,41cyclictest26-21ksoftirqd/109:30:161
323862780,7sleep0171rcuc/009:00:370
24188997449,17cyclictest29592-21apt-get08:55:120
24188997114,51cyclictest0-21swapper/010:20:230
24188997113,15cyclictest0-21swapper/007:30:140
24188996949,13cyclictest14-21ksoftirqd/007:35:140
24188996949,13cyclictest14-21ksoftirqd/007:35:130
24188996934,29cyclictest14-21ksoftirqd/010:59:470
24194996825,38cyclictest24184-21turbostat08:40:001
24188996816,46cyclictest0-21swapper/012:25:120
24194996423,37cyclictest26-21ksoftirqd/108:55:161
24194996421,9cyclictest26-21ksoftirqd/110:00:401
24188996423,17cyclictest448-21dbus-daemon07:30:010
24194996327,17cyclictest26-21ksoftirqd/110:51:301
2419499627,9cyclictest26-21ksoftirqd/107:54:581
24194996246,10cyclictest26-21ksoftirqd/108:10:141
24194996245,11cyclictest26-21ksoftirqd/112:00:141
24188996244,9cyclictest14-21ksoftirqd/009:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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