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2026-05-10 - 02:31
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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 rack0slot3.osadl.org (updated Sun May 10, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22419062362356,4sleep20-21swapper/219:05:438
22421452361355,4sleep140-21swapper/1419:09:086
22419482360320,13sleep90-21swapper/919:06:2315
22419402354314,13sleep10-21swapper/119:06:151
22419652348340,5sleep50-21swapper/519:06:3511
22421112346307,14sleep150-21swapper/1519:08:377
22422082344324,13sleep120-21swapper/1219:09:554
22422022343322,14sleep70-21swapper/719:09:5013
22421052342323,13sleep110-21swapper/1119:08:333
22420072342322,14sleep80-21swapper/819:07:1014
22419252342322,14sleep40-21swapper/419:06:0210
22420042341319,15sleep60-21swapper/619:07:0812
22420852339319,14sleep100-21swapper/1019:08:162
22420212338319,13sleep30-21swapper/319:07:219
22419352338318,14sleep130-21swapper/1319:06:105
22420562336316,14sleep00-21swapper/019:07:500
224244699295295,0cyclictest0-21swapper/1219:35:004
224243299285282,3cyclictest2211-21Xorg20:11:000
224243299285282,3cyclictest2211-21Xorg20:11:000
224244899284282,2cyclictest3272-21gnome-shell19:46:596
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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