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2026-01-10 - 07:05
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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 Sat Jan 10, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
802927952,22sleep00-21swapper/019:08:420
267912710,0sleep10-21swapper/121:15:051
38452700,1sleep00-21swapper/020:20:080
782726654,8sleep10-21swapper/119:06:361
832099320,30cyclictest0-21swapper/023:35:040
8321992910,6cyclictest0-21swapper/122:05:091
832199288,19cyclictest0-21swapper/123:44:311
8321992810,10cyclictest0-21swapper/122:03:231
832099270,5cyclictest0-21swapper/022:33:040
832099270,22cyclictest0-21swapper/021:45:340
8321992612,9cyclictest636-21nscd00:20:021
832199260,16cyclictest0-21swapper/100:05:021
8320992625,0cyclictest0-21swapper/000:14:440
8320992610,8cyclictest0-21swapper/022:01:470
832199250,13cyclictest100350irq/108-eth1-tx21:20:011
8320992520,5cyclictest6149-21apache223:47:150
8320992510,12cyclictest0-21swapper/021:53:290
8321992420,4cyclictest6149-21apache221:31:161
832199241,20cyclictest0-21swapper/100:16:171
8321992410,7cyclictest100250irq/107-eth1-rx00:10:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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