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2025-12-31 - 11:47
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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 Wed Dec 31, 2025 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13888999265,17cyclictest0-21swapper/021:45:150
13888999265,17cyclictest0-21swapper/021:45:140
13888999068,11cyclictest14-21ksoftirqd/020:10:130
13888998962,14cyclictest14-21ksoftirqd/022:10:160
13888998918,62cyclictest0-21swapper/021:25:150
13888998918,62cyclictest0-21swapper/021:25:140
13888998756,17cyclictest14-21ksoftirqd/023:15:140
1215028630,42sleep00-21swapper/019:05:150
13888998517,56cyclictest0-21swapper/020:55:160
13888998444,34cyclictest14-21ksoftirqd/022:50:150
13888998315,54cyclictest0-21swapper/022:55:150
1388899827,64cyclictest15167-21apt-get23:45:150
13888998254,18cyclictest14-21ksoftirqd/019:50:160
1388899823,71cyclictest533-21fw_packets20:00:230
13888998154,18cyclictest14-21ksoftirqd/019:20:150
13888998115,52cyclictest0-21swapper/022:45:230
13888998115,52cyclictest0-21swapper/022:45:220
13888998114,53cyclictest0-21swapper/020:20:120
1388899805,62cyclictest21527-21apt-get21:00:140
13888998054,18cyclictest14-21ksoftirqd/019:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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