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2025-11-27 - 13:09
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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 rackeslot8.osadl.org (updated Thu Nov 27, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70931993424,7cyclictest199925-21sleep21:00:003
70931992219,1cyclictest0-21swapper/322:25:243
7093199221,17cyclictest512912-21turbostat00:15:003
70931992118,1cyclictest0-21swapper/321:35:003
70931992118,1cyclictest0-21swapper/321:15:223
70931992114,5cyclictest129406-21turbostat19:55:013
29389822117,2sleep20-21swapper/222:00:012
70931992017,1cyclictest0-21swapper/322:55:223
70931992017,1cyclictest0-21swapper/321:04:593
70931991917,1cyclictest0-21swapper/321:25:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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