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2026-04-22 - 01:16
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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 rack3slot6.osadl.org (updated Tue Apr 21, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2115621040,7chrt21158-21latency_hist10:30:020
1413829713,38sleep00-21swapper/007:07:270
1456899915,54cyclictest0-21swapper/112:00:321
1456899898,53cyclictest0-21swapper/107:35:361
1456899897,54cyclictest0-21swapper/109:45:301
176692880,5sleep1251rcuc/107:15:321
14564998821,52cyclictest0-21swapper/010:55:170
1456899876,72cyclictest0-21swapper/110:50:141
1456899873,76cyclictest562-21runrttasks07:50:151
14564998719,59cyclictest0-21swapper/008:30:130
1456499866,19cyclictest30035-21apt-get12:25:130
1456899856,70cyclictest0-21swapper/110:35:161
1456899855,52cyclictest0-21swapper/108:25:111
14568998510,67cyclictest0-21swapper/108:45:121
1413328529,45sleep10-21swapper/107:07:241
1456899849,68cyclictest0-21swapper/107:25:141
1456899849,67cyclictest0-21swapper/111:05:131
14564998414,60cyclictest0-21swapper/012:10:130
14564998414,54cyclictest0-21swapper/010:05:110
1456899839,42cyclictest0-21swapper/108:35:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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