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2026-01-02 - 01:26
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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 Fri Jan 02, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
840667991610,5cyclictest0-21swapper/300:00:023
840667991510,0cyclictest0-21swapper/300:35:013
84066799130,11cyclictest0-21swapper/323:20:133
840667991211,0cyclictest0-21swapper/319:35:133
840667991211,0cyclictest0-21swapper/300:05:123
84066799120,1cyclictest0-21swapper/320:40:113
84066799120,11cyclictest0-21swapper/322:05:013
84066799120,11cyclictest0-21swapper/321:55:123
84066799120,11cyclictest0-21swapper/321:05:013
84066799120,11cyclictest0-21swapper/320:57:003
84066799120,11cyclictest0-21swapper/320:20:113
84066799119,1cyclictest0-21swapper/300:10:133
840667991111,0cyclictest0-21swapper/322:05:153
840667991111,0cyclictest0-21swapper/321:10:133
84066799110,10cyclictest0-21swapper/323:44:323
84066799110,10cyclictest0-21swapper/322:20:113
84066799110,10cyclictest0-21swapper/321:25:013
84066799110,10cyclictest0-21swapper/320:55:023
84066799110,10cyclictest0-21swapper/320:05:013
84066799110,0cyclictest0-21swapper/323:50:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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