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2025-12-26 - 16:53
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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 rackeslot8.osadl.org (updated Fri Dec 26, 2025 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37085082850,1sleep10-21swapper/108:50:201
3571832993330,1cyclictest0-21swapper/309:00:003
3571832993329,1cyclictest0-21swapper/310:55:003
3571832992320,1cyclictest0-21swapper/310:55:133
3571832992219,1cyclictest0-21swapper/311:22:423
3571832992217,2cyclictest3851457-21turbostat10:45:013
3571832991916,1cyclictest0-21swapper/311:50:213
3571832991916,1cyclictest0-21swapper/307:20:153
3571832991915,1cyclictest0-21swapper/311:40:003
357183299191,13cyclictest3670978-21taskset08:25:013
357183299190,13cyclictest3948620-21taskset12:00:013
357183299188,7cyclictest3780229-21turbostat09:50:003
357183299181,13cyclictest3833762-21taskset10:30:163
357183299181,13cyclictest3805924-21turbostat10:10:003
357183299177,6cyclictest3735204-21turbostat09:15:003
3571832991714,1cyclictest0-21swapper/309:15:253
3571832991714,1cyclictest0-21swapper/307:30:163
357183299171,13cyclictest3747242-21taskset09:20:193
357183299171,12cyclictest3929136-21taskset11:45:103
357183299171,12cyclictest3929136-21taskset11:45:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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