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2025-11-17 - 09:49
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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 rack1slot8.osadl.org (updated Mon Nov 17, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1934899901819,48cyclictest29183-21netstat19:35:220
1934899876798,53cyclictest0-21swapper/019:10:070
1934999820740,47cyclictest0-21swapper/119:10:071
1934999815754,45cyclictest28508-21munin-node19:35:231
192762651628,16sleep00-21swapper/019:09:370
193499911714,62cyclictest0-21swapper/120:37:591
7062970,3sleep1705-21wc23:05:211
216899950,10rtkit-daemon0-21swapper/000:01:110
216899890,12rtkit-daemon0-21swapper/021:20:371
19349998613,60cyclictest0-21swapper/122:51:001
19349998511,59cyclictest0-21swapper/122:21:591
19349998112,55cyclictest0-21swapper/120:59:001
1934899805,70cyclictest0-21swapper/022:32:590
19348997910,63cyclictest0-21swapper/020:18:580
216899780,5rtkit-daemon2167-21rtkit-daemon23:10:101
216899780,5rtkit-daemon2167-21rtkit-daemon22:30:251
19348997712,59cyclictest0-21swapper/020:49:000
216899760,4rtkit-daemon2167-21rtkit-daemon21:16:480
19349997612,50cyclictest0-21swapper/121:18:001
216899750,4rtkit-daemon2167-21rtkit-daemon23:47:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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