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2026-01-07 - 09:36
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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 Wed Jan 07, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11396052380,1sleep20-21swapper/220:15:162
1052767992926,1cyclictest0-21swapper/321:20:003
1052767992421,1cyclictest0-21swapper/300:40:003
1052767992420,1cyclictest0-21swapper/300:20:013
105276799241,17cyclictest1087317-21taskset19:35:013
1052767992212,1cyclictest0-21swapper/321:58:543
1052767992211,1cyclictest0-21swapper/300:01:283
1052767992119,1cyclictest0-21swapper/322:30:003
1052767992117,1cyclictest0-21swapper/320:05:003
1052767992112,0cyclictest0-21swapper/321:38:353
105276799211,13cyclictest1281549-21taskset22:05:013
307598200,10rtkit-daemon1077879-21tr19:25:222
1052767992017,1cyclictest0-21swapper/321:55:013
1052767992017,1cyclictest0-21swapper/300:10:013
1052767992011,1cyclictest0-21swapper/319:13:233
1052767991916,1cyclictest0-21swapper/322:20:193
1052767991913,3cyclictest1398002-21sleep23:35:003
105276799191,13cyclictest1417548-21taskset23:50:013
10620052180,8sleep01062156-21sed19:15:150
1052767991815,1cyclictest0-21swapper/322:30:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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