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2026-06-03 - 13:10
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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 Wed Jun 03, 2026 00:46:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
129780599382380,1cyclictest311356-21kworker/3:021:15:023
1297805993810,380cyclictest0-21swapper/323:45:033
1297805993810,380cyclictest0-21swapper/322:32:033
129780599380379,1cyclictest1442672-21kworker/3:123:17:023
129780599380379,1cyclictest1442672-21kworker/3:122:49:023
129780599380379,1cyclictest1442672-21kworker/3:122:41:023
1297805993800,379cyclictest0-21swapper/300:30:023
1297805993800,379cyclictest0-21swapper/300:30:023
129780599379378,1cyclictest311356-21kworker/3:022:07:033
129780599379378,1cyclictest1442672-21kworker/3:123:34:023
129780599379378,1cyclictest1442672-21kworker/3:122:39:023
129780599379377,1cyclictest311356-21kworker/3:022:11:023
1297805993790,1cyclictest0-21swapper/321:24:023
129780599378377,1cyclictest311356-21kworker/3:020:45:033
129780599378377,1cyclictest1442672-21kworker/3:100:07:023
129780599378377,1cyclictest0-21swapper/323:28:023
129780599378377,1cyclictest0-21swapper/321:05:033
129780599377376,1cyclictest311356-21kworker/3:021:44:023
129780599377376,1cyclictest311356-21kworker/3:019:52:033
129780599377376,1cyclictest1591825-21kworker/3:000:38:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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