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2026-07-25 - 10:22
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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 10 highest latencies:
System rackeslot5.osadl.org (updated Sat Jul 25, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25142993127,4cyclictest0-21swapper/222:25:112
25144993028,1cyclictest0-21swapper/320:50:113
2514299300,29cyclictest2628-21apt-get19:30:132
2513499300,0cyclictest0-21swapper/019:45:180
25144992927,1cyclictest2330-21cron19:30:013
25142992928,1cyclictest0-21swapper/222:35:102
25142992928,1cyclictest0-21swapper/222:35:102
2514299290,28cyclictest2588-21perf20:39:592
2514299290,1cyclictest31341-21apt-get22:50:122
2513899290,28cyclictest21137-21apt-get23:35:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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