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2026-07-23 - 05:13
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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 Thu Jul 23, 2026 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262719499381379,1cyclictest2906286-21kworker/2:120:17:022
262719499380378,1cyclictest2735727-21kworker/2:122:44:022
262719499380378,1cyclictest2735727-21kworker/2:122:21:022
2627194993800,379cyclictest0-21swapper/223:29:012
2627194993800,1cyclictest0-21swapper/223:33:012
2627194993800,1cyclictest0-21swapper/221:51:022
262719499379377,1cyclictest2906286-21kworker/2:120:09:012
262719499377376,1cyclictest2735727-21kworker/2:122:50:012
262719499377376,1cyclictest0-21swapper/220:56:022
262719499376375,1cyclictest2906286-21kworker/2:120:23:012
262719499376375,1cyclictest0-21swapper/222:32:022
262719499376375,1cyclictest0-21swapper/220:31:022
262719499376374,1cyclictest2735727-21kworker/2:100:29:022
262719499375373,1cyclictest2906286-21kworker/2:121:03:022
262719499375373,1cyclictest2906286-21kworker/2:119:20:022
262719499375373,1cyclictest2906286-21kworker/2:119:20:022
262719499375373,1cyclictest2906286-21kworker/2:119:12:012
262719499374373,1cyclictest2906286-21kworker/2:119:43:012
262719499374373,1cyclictest0-21swapper/223:22:022
262719499374373,1cyclictest0-21swapper/222:47:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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