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2026-08-27 - 06:50
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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 rackeslot3.osadl.org (updated Thu Aug 27, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2543411997639,35cyclictest2684266-21kworker/1:123:05:141
2543411996764,2cyclictest0-21swapper/100:27:391
2543411996744,22cyclictest2578232-21kworker/1:221:15:141
2543411996641,23cyclictest2564097-21kworker/1:020:20:171
2543411996543,21cyclictest2635309-21kworker/1:122:10:141
2543411996543,20cyclictest2687033-1kworker/1:1H23:24:521
2543411996446,17cyclictest2591476-21kworker/1:321:30:021
2543411996441,21cyclictest2578232-21kworker/1:221:00:141
2543411996343,19cyclictest2678087-21kworker/1:022:55:141
2543411996341,21cyclictest2760153-21kworker/1:000:30:001
2543411996335,26cyclictest2650740-21kworker/1:322:30:001
2543411996258,2cyclictest0-21swapper/122:52:511
2543411996244,17cyclictest2735925-21kworker/1:200:05:171
2543411996243,18cyclictest2625574-21kworker/1:122:00:411
2543411996243,18cyclictest2578232-21kworker/1:221:10:121
2543411996243,18cyclictest2572675-21kworker/1:120:40:151
2543411996243,18cyclictest2542386-21kworker/1:319:26:041
2543411996243,17cyclictest2578232-21kworker/1:221:05:151
2543411996242,18cyclictest2760153-21kworker/1:000:35:331
2543411996242,18cyclictest2640051-21kworker/1:022:15:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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