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2025-11-20 - 02:20
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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
Characteristics of the 50 highest latencies:
System rackdslot0.osadl.org (updated Wed Nov 19, 2025 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16358993635,0cyclictest0-21swapper/011:45:180
16358992323,0cyclictest0-21swapper/011:05:200
16360992113,6cyclictest0-21swapper/208:45:012
16359992120,1cyclictest21-21ksoftirqd/111:53:111
1635999210,18cyclictest0-21swapper/110:10:011
16358992115,5cyclictest0-21swapper/010:50:000
16359992018,1cyclictest0-21swapper/108:39:131
1635999200,5cyclictest0-21swapper/109:28:451
16358992017,2cyclictest4526-21H212:26:330
16358992017,2cyclictest4523-21H212:26:330
16360991917,1cyclictest28-21ksoftirqd/212:02:162
16360991917,1cyclictest28-21ksoftirqd/212:02:162
16360991917,1cyclictest0-21swapper/209:40:562
16360991916,2cyclictest4538-21H212:26:332
16360991914,3cyclictest4523-21H212:26:332
1636099190,3cyclictest20514-21apt11:05:002
1636099190,2cyclictest4593-21H212:26:332
1636099190,2cyclictest4536-21H212:26:332
1636099190,2cyclictest4532-21H212:26:332
1636099190,2cyclictest4528-21H212:26:332
1636099190,1cyclictest0-21swapper/208:34:572
1636099190,1cyclictest0-21swapper/208:34:562
1636099190,17cyclictest4536-21H212:26:332
1636099190,16cyclictest4593-21H212:26:332
1636099190,16cyclictest4581-21H212:26:332
1636099190,16cyclictest4528-21H212:26:332
1635999194,1cyclictest4581-21H212:26:331
1635999193,2cyclictest4523-21H212:26:331
16359991917,1cyclictest0-21swapper/112:01:441
16359991917,1cyclictest0-21swapper/112:01:431
16359991917,1cyclictest0-21swapper/108:00:161
16359991917,1cyclictest0-21swapper/107:17:111
1635999191,2cyclictest0-21swapper/111:19:061
1635999190,1cyclictest0-21swapper/111:57:201
1635999190,18cyclictest4523-21H212:26:331
1635999190,16cyclictest4536-21H212:26:331
16358991917,1cyclictest0-21swapper/008:45:020
16358991916,3cyclictest0-21swapper/011:35:000
16358991916,2cyclictest25640-21cat10:15:150
16358991916,2cyclictest25640-21cat10:15:140
16358991916,2cyclictest17464-21expr11:55:150
16358991915,3cyclictest2079-21systemd-udevd07:41:070
16358991915,3cyclictest0-21swapper/011:15:000
1635899191,3cyclictest0-21swapper/009:27:250
16358991913,5cyclictest0-21swapper/008:45:220
1635899190,4cyclictest17472-21nfsd410:00:190
1635899190,17cyclictest4534-21H212:26:330
1635899190,16cyclictest4532-21H212:26:330
1635899190,16cyclictest4532-21H212:26:330
1635899190,16cyclictest4532-21H212:26:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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