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2026-08-03 - 06:04
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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 Mon Aug 03, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2940925250,16sleep014-21ksoftirqd/019:09:550
29554999913,79cyclictest0-21swapper/021:30:130
2955499883,54cyclictest3479-21seq23:56:440
2955499883,54cyclictest3479-21seq23:56:440
29554998713,58cyclictest0-21swapper/021:05:130
29554998612,58cyclictest0-21swapper/020:40:120
29559998534,44cyclictest26-21ksoftirqd/123:45:481
29554998525,48cyclictest9722-21apt-get21:15:130
29554998514,57cyclictest0-21swapper/023:40:120
29554998512,57cyclictest0-21swapper/023:35:110
29554998512,57cyclictest0-21swapper/023:10:130
2955999845,59cyclictest2496-21apt-get22:25:141
29554998433,45cyclictest564-21sort20:50:010
29554998413,63cyclictest0-21swapper/022:20:230
29554998412,60cyclictest0-21swapper/023:20:130
29554998412,57cyclictest0-21swapper/022:10:110
29554998313,64cyclictest0-21swapper/019:30:160
29554998313,62cyclictest0-21swapper/022:55:150
29554998313,62cyclictest0-21swapper/022:05:130
29554998312,63cyclictest0-21swapper/020:35:140
2955999826,65cyclictest15023-21apt-get21:30:151
29554998212,62cyclictest0-21swapper/020:20:110
29554998212,60cyclictest0-21swapper/021:25:170
29554998212,58cyclictest0-21swapper/020:30:130
29554998212,57cyclictest0-21swapper/000:15:140
2955999816,64cyclictest29433-21apt-get23:40:121
29554998133,42cyclictest7811-21diskmemload21:10:130
2955499812,49cyclictest562-21runrttasks21:59:100
29554998114,60cyclictest0-21swapper/023:50:140
29554998113,57cyclictest0-21swapper/021:45:120
29554998113,55cyclictest0-21swapper/021:20:120
29554998112,57cyclictest0-21swapper/019:45:150
29554998111,55cyclictest0-21swapper/019:20:120
2955499804,70cyclictest13449-21turbostat22:55:000
29554998016,57cyclictest0-21swapper/000:20:110
29554998012,61cyclictest0-21swapper/020:15:130
29554998012,61cyclictest0-21swapper/019:25:130
2955999797,58cyclictest0-21swapper/100:20:121
2955999796,61cyclictest9598-21apt-get00:15:141
2955499796,66cyclictest0-21swapper/000:05:250
29554997932,41cyclictest31844-21users19:15:090
2955499792,71cyclictest15155-21expr00:30:190
29554997914,56cyclictest0-21swapper/000:25:140
29554997912,58cyclictest0-21swapper/021:35:140
2955999787,56cyclictest0-21swapper/122:10:121
2955999786,56cyclictest0-21swapper/100:30:141
2955999785,60cyclictest9995-21apt-get19:45:151
2955999785,55cyclictest22405-21apt-get23:20:131
2955499782,69cyclictest26725-21/usr/sbin/munin23:30:320
29554997813,53cyclictest0-21swapper/022:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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