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2025-06-28 - 23:03
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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 Sat Jun 28, 2025 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2379213338,77sleep10-21swapper/107:05:201
37419911085,16cyclictest14-21ksoftirqd/010:50:210
37419910971,25cyclictest14-21ksoftirqd/008:35:190
37419910846,47cyclictest261-21systemd-journal10:15:180
37419910846,47cyclictest261-21systemd-journal10:15:180
37419910812,81cyclictest0-21swapper/007:15:150
37419910812,81cyclictest0-21swapper/007:15:140
37419910812,80cyclictest0-21swapper/008:45:160
37419910712,80cyclictest0-21swapper/012:00:150
3741991037,43cyclictest14742-31find07:40:140
37419910311,78cyclictest0-21swapper/012:30:150
37419910156,33cyclictest14-21ksoftirqd/010:55:170
37419910065,26cyclictest14-21ksoftirqd/011:40:150
3741999754,33cyclictest14-21ksoftirqd/007:25:130
3741999754,31cyclictest0-21swapper/009:05:160
374199956,60cyclictest515-21ntpd07:55:130
3741999556,29cyclictest14-21ksoftirqd/010:25:190
3741999449,33cyclictest14-21ksoftirqd/007:20:170
3741999449,32cyclictest14-21ksoftirqd/008:15:180
3741999449,32cyclictest14-21ksoftirqd/007:35:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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