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2025-12-21 - 14:07
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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 Sun Dec 21, 2025 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13964212132,30sleep10-21swapper/107:05:031
159189910614,76cyclictest0-21swapper/010:45:230
159189910613,81cyclictest0-21swapper/011:20:140
159189910573,20cyclictest14-21ksoftirqd/009:45:150
159189910534,36cyclictest6272-21kworker/0:109:50:120
159189910513,78cyclictest0-21swapper/011:55:120
159189910312,78cyclictest0-21swapper/009:40:110
159189910312,78cyclictest0-21swapper/009:05:190
159229910264,28cyclictest26-21ksoftirqd/111:00:121
159189910268,21cyclictest14-21ksoftirqd/010:25:240
159189910262,27cyclictest14-21ksoftirqd/008:00:130
159189910211,81cyclictest500-21snmpd08:15:130
159189910013,74cyclictest0-21swapper/009:30:150
15918999913,74cyclictest0-21swapper/012:20:120
15918999910,77cyclictest13750-21apt-get10:05:180
15918999863,23cyclictest14-21ksoftirqd/007:30:150
15918999814,72cyclictest0-21swapper/012:00:240
15918999813,74cyclictest0-21swapper/009:15:150
15918999712,75cyclictest0-21swapper/009:25:120
15918999712,75cyclictest0-21swapper/009:25:110
15922999615,65cyclictest0-21swapper/110:00:131
15918999612,73cyclictest0-21swapper/011:50:140
15918999512,72cyclictest0-21swapper/007:25:160
15918999512,69cyclictest0-21swapper/012:25:150
15918999511,70cyclictest0-21swapper/011:25:150
231462940,5chrt23147-21/usr/sbin/munin09:00:171
15922999438,46cyclictest26-21ksoftirqd/108:45:131
15922999413,64cyclictest0-21swapper/110:30:131
15918999451,31cyclictest14-21ksoftirqd/008:55:140
15918999415,65cyclictest0-21swapper/011:45:130
15918999412,70cyclictest0-21swapper/007:20:140
15918999412,69cyclictest0-21swapper/010:10:140
15922999312,60cyclictest0-21swapper/108:15:141
15918999314,67cyclictest0-21swapper/009:20:130
15918999313,68cyclictest0-21swapper/012:30:160
15918999313,68cyclictest0-21swapper/007:50:130
15918999313,68cyclictest0-21swapper/007:50:130
15918999313,67cyclictest0-21swapper/010:40:140
15918999313,67cyclictest0-21swapper/009:00:140
15918999312,69cyclictest0-21swapper/011:05:120
15918999311,69cyclictest0-21swapper/008:25:130
1576829320,26sleep00-21swapper/007:09:480
1592299927,60cyclictest5271-21sshd08:10:121
15918999214,67cyclictest0-21swapper/008:30:240
15918999213,68cyclictest0-21swapper/010:20:140
15918999213,68cyclictest0-21swapper/008:35:110
15918999212,67cyclictest0-21swapper/007:55:130
15918999211,69cyclictest0-21swapper/011:30:130
15922999110,59cyclictest0-21swapper/112:00:251
15918999149,30cyclictest0-21swapper/008:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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