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2026-06-25 - 01:18
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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 Wed Jun 24, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
489849996461,2cyclictest0-21swapper/111:43:341
48984999642,61cyclictest705188-21systemd12:25:011
489849996259,2cyclictest0-21swapper/110:51:471
489849996159,1cyclictest0-21swapper/111:48:421
489849996158,2cyclictest0-21swapper/111:18:251
489849996141,18cyclictest498674-21kworker/1:307:35:171
489849996140,19cyclictest545832-1kworker/1:2H11:05:011
489849996058,1cyclictest0-21swapper/110:25:591
489849996057,2cyclictest0-21swapper/108:36:531
489849996057,2cyclictest0-21swapper/108:36:521
489849996041,18cyclictest686234-21kworker/1:012:25:141
489849995940,17cyclictest597867-21kworker/1:210:30:151
489849995843,14cyclictest508353-21kworker/1:108:10:001
489849995842,15cyclictest545832-1kworker/1:2H10:35:131
489849995842,15cyclictest1290408-1kworker/1:0H09:15:151
489849995841,16cyclictest686234-21kworker/1:012:10:141
48984999580,55cyclictest596066-21cron10:25:001
489852995753,2cyclictest1941157-1kworker/3:2H11:33:393
489849995742,14cyclictest629906-21kworker/1:111:05:131
489849995742,14cyclictest519971-21kworker/1:008:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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