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2026-04-15 - 17:57
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Wed Apr 15, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178249911494,13cyclictest0-21swapper/110:20:131
17822991087,53cyclictest0-21swapper/011:30:110
17822991067,75cyclictest0-21swapper/010:25:130
17822991046,23cyclictest0-21swapper/010:35:130
17824999670,18cyclictest26-21ksoftirqd/108:55:121
1782299967,69cyclictest0-21swapper/012:10:100
1782299967,19cyclictest0-21swapper/008:10:140
17822999540,32cyclictest0-21swapper/010:20:100
17822999245,29cyclictest0-21swapper/011:00:140
17822999245,29cyclictest0-21swapper/011:00:140
17822999241,33cyclictest0-21swapper/007:55:130
17824999160,20cyclictest26-21ksoftirqd/111:10:231
17824998911,69cyclictest26-21ksoftirqd/108:35:111
17824998425,53cyclictest0-21swapper/108:00:271
17824998413,60cyclictest0-21swapper/108:50:121
17824998313,57cyclictest0-21swapper/108:30:141
17824998312,59cyclictest0-21swapper/109:55:121
1782299837,21cyclictest0-21swapper/011:55:120
1782499827,60cyclictest29392-21apt-get07:40:131
17824998214,58cyclictest0-21swapper/107:45:141
17824998214,54cyclictest0-21swapper/109:05:231
17824998213,59cyclictest0-21swapper/107:15:111
17824998116,55cyclictest0-21swapper/109:35:111
17824998114,54cyclictest0-21swapper/107:50:111
17824998113,54cyclictest0-21swapper/110:15:131
17824998112,57cyclictest0-21swapper/109:30:111
17822998110,18cyclictest0-21swapper/008:50:130
1782499807,60cyclictest25900-21apt-get12:05:131
1782499798,62cyclictest0-21swapper/111:40:221
1782499797,60cyclictest6927-21apt-get09:40:131
17824997915,54cyclictest0-21swapper/111:35:221
1782299796,50cyclictest0-21swapper/010:30:120
17822997810,50cyclictest0-21swapper/008:20:120
17824997727,41cyclictest30999-21cron12:20:011
17824997727,41cyclictest30999-21cron12:20:011
17824997715,51cyclictest0-21swapper/109:50:121
17824997713,53cyclictest0-21swapper/111:55:141
17824997713,53cyclictest0-21swapper/107:30:221
17824997713,52cyclictest0-21swapper/112:35:121
17824997713,52cyclictest0-21swapper/109:10:121
17824997712,55cyclictest0-21swapper/108:10:131
17824997711,55cyclictest0-21swapper/111:05:131
1608227733,33sleep10-21swapper/107:05:111
1782499769,55cyclictest27967-21apt-get10:40:141
1782499767,61cyclictest5690-21apt-get08:05:121
1782499767,18cyclictest22676-21apt-get10:25:131
1782499763,37cyclictest14815-21awk10:00:341
17824997625,44cyclictest14202-21sort11:30:341
17824997615,54cyclictest243-21systemd-journal09:18:401
17824997613,51cyclictest0-21swapper/112:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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