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2026-05-26 - 03:44
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Tue May 26, 2026 00:46:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255849099382380,1cyclictest2659415-21kworker/0:121:43:020
2558522993810,380cyclictest0-21swapper/419:43:024
255849099381380,1cyclictest2580380-21kworker/0:021:35:020
255849099381379,1cyclictest2659415-21kworker/0:122:02:010
255849099380379,1cyclictest2659415-21kworker/0:122:39:020
255849099380379,1cyclictest2580380-21kworker/0:021:06:020
255849099380378,1cyclictest2856035-21kworker/0:100:25:010
255849099380378,1cyclictest2799546-21kworker/0:223:36:030
255849099380378,1cyclictest2659415-21kworker/0:123:20:010
255849099380378,1cyclictest2659415-21kworker/0:122:54:010
255849099380378,1cyclictest2580380-21kworker/0:021:32:020
255849099380378,1cyclictest2580380-21kworker/0:021:13:010
2558490993800,1cyclictest0-21swapper/022:12:020
2558490993800,1cyclictest0-21swapper/020:57:020
255849099379378,1cyclictest2659415-21kworker/0:122:34:020
255849099379378,1cyclictest2580380-21kworker/0:021:22:010
255849099379378,1cyclictest2580380-21kworker/0:021:17:010
2558490993790,379cyclictest0-21swapper/021:50:010
2558490993790,379cyclictest0-21swapper/020:24:010
255850899378375,2cyclictest0-21swapper/222:31:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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