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2026-03-15 - 15:06
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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 rack1slot3.osadl.org (updated Sun Mar 15, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3366562991410,0cyclictest0-21swapper/310:25:133
336656299140,12cyclictest0-21swapper/311:55:133
336656299130,12cyclictest0-21swapper/312:30:563
336656299130,12cyclictest0-21swapper/307:15:123
336656299130,11cyclictest0-21swapper/308:05:113
3366562991210,2cyclictest0-21swapper/307:15:003
3366562991210,1cyclictest0-21swapper/312:10:123
3366562991210,1cyclictest0-21swapper/307:37:533
336656299120,11cyclictest0-21swapper/311:34:233
336656299120,10cyclictest0-21swapper/312:35:193
336656299120,10cyclictest0-21swapper/307:25:153
336656299120,0cyclictest0-21swapper/311:15:023
336656299119,1cyclictest0-21swapper/308:50:123
3366562991110,0cyclictest0-21swapper/311:15:123
336656299110,8cyclictest0-21swapper/311:50:173
336656299110,10cyclictest0-21swapper/310:20:043
336656299110,10cyclictest0-21swapper/308:30:113
336656299110,10cyclictest0-21swapper/308:20:013
336656299110,0cyclictest0-21swapper/312:25:143
336656299110,0cyclictest0-21swapper/311:00:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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