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2025-11-03 - 09:57
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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 rackcslot2.osadl.org (updated Mon Nov 03, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
149127462,7sleep00-21swapper/019:03:230
140127056,9sleep10-21swapper/119:02:281
41872550,0sleep00-21swapper/021:32:460
2012993636,0cyclictest0-21swapper/120:26:211
2012992916,5cyclictest588-21gmain23:11:541
2011992810,1cyclictest16578-21kworker/u4:121:50:510
2012992620,5cyclictest24702-21apache222:41:401
2012992610,10cyclictest0-21swapper/121:18:271
2011992621,3cyclictest817-21apache200:14:180
2011992610,4cyclictest0-21swapper/023:03:440
2011992610,4cyclictest0-21swapper/023:03:440
201199260,13cyclictest0-21swapper/019:57:140
201299254,2cyclictest0-21swapper/100:17:071
201299254,16cyclictest28069-21kworker/u4:121:33:091
2012992520,3cyclictest24729-21apache222:15:191
2012992510,1cyclictest0-21swapper/100:12:081
2012992510,10cyclictest0-21swapper/121:54:291
201299250,5cyclictest0-21swapper/121:16:341
2011992525,0cyclictest0-21swapper/019:14:170
2011992518,4cyclictest0-21swapper/021:54:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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