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2026-05-24 - 02:36
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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 rack5slot2.osadl.org (updated Sun May 24, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296522203188,11sleep10-21swapper/119:10:001
294162193176,12sleep30-21swapper/319:07:013
294082190172,13sleep00-21swapper/019:06:550
274242143124,14sleep20-21swapper/219:05:032
259192510,0sleep10-21swapper/121:56:491
96122490,0sleep20-21swapper/223:55:202
161042460,0sleep00-21swapper/000:30:290
89672450,0sleep10-21swapper/121:49:131
153742400,0sleep20-21swapper/223:10:202
123842240,0sleep212389-21gltestperf23:25:142
298259993,3cyclictest2791-21perf20:25:000
24216290,0sleep30-21swapper/321:55:483
298259982,3cyclictest6249-21perf22:35:010
298259973,4cyclictest15148-21munin-run20:50:000
298259971,3cyclictest32192-21munin-run19:15:020
298259970,6cyclictest0-21swapper/022:20:120
298259960,3cyclictest11923-21awk21:35:020
2133260,1sleep00-21swapper/021:14:250
298359955,0cyclictest19308-21kworker/3:223:29:013
298359955,0cyclictest19308-21kworker/3:222:55:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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