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2025-11-26 - 14:00
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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 rack0slot7.osadl.org (updated Wed Nov 26, 2025 00:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2405102994860,83cyclictest3209869-21StreamT~11
24051009947847,425cyclictest324834-21IPC9
24051009944513,28cyclictest324832-21glean.dispatche21:15:519
24050999944510,27cyclictest0-21swapper/222:13:348
2405100994408,28cyclictest0-21swapper/321:53:229
2405104994388,27cyclictest1983828-21DOM09:53:5813
24051009943838,399cyclictest0-21swapper/319:13:339
2405099994329,28cyclictest390759-21thunderbird21:00:218
24050999943123,407cyclictest0-21swapper/222:03:228
24050999942719,407cyclictest0-21swapper/221:46:238
24051059942321,401cyclictest0-21swapper/819:14:2314
240510499421417,3cyclictest2343-21snmpd22:01:1113
24051049941811,406cyclictest0-21swapper/722:19:5413
240509899416412,4cyclictest390842-21Renderer22:00:201
2405099994159,406cyclictest0-21swapper/221:18:438
2405098994158,406cyclictest0-21swapper/122:26:511
2405099994136,406cyclictest0-21swapper/222:29:458
2405098994137,403cyclictest0-21swapper/122:18:231
24051059941117,394cyclictest0-21swapper/819:57:2314
24051059941011,398cyclictest0-21swapper/819:50:2114
2405101994105,405cyclictest0-21swapper/421:06:5510
2405098994102,407cyclictest0-21swapper/122:24:231
2405098994100,405cyclictest0-21swapper/121:02:491
2405109994094,405cyclictest0-21swapper/1222:16:334
2405109994093,403cyclictest0-21swapper/1221:48:524
2405116994088,400cyclictest0-21swapper/1422:18:576
2405098994085,400cyclictest0-21swapper/121:55:231
2405098994080,404cyclictest0-21swapper/121:11:291
240510399407403,3cyclictest2472704-21kworker/6:2+events19:55:2112
2405103994070,404cyclictest510805-21TaskCon~ller12
2405109994060,406cyclictest0-21swapper/1222:00:444
240510299406405,1cyclictest0-21swapper/521:04:2311
240509999406404,1cyclictest2612583-21kworker/2:0+events22:15:228
2405119994050,404cyclictest0-21swapper/1519:53:347
240510199405403,2cyclictest3035812-21kworker/4:2+events21:48:5210
2405102994040,0cyclictest407993-21Isolated09:53:5811
2405100994032,0cyclictest1983828-21DOM09:53:589
240509799403399,3cyclictest0-21swapper/021:07:450
240510699402399,3cyclictest0-21swapper/921:50:2315
240510699401394,7cyclictest2889914-21kthreadcore21:05:2415
2405105994010,400cyclictest510805-21TaskCon~ller14
240510199400398,2cyclictest3070411-21kworker/4:1+events22:00:4410
240510899399398,0cyclictest0-21swapper/1119:51:383
2405119993980,398cyclictest0-21swapper/1521:01:467
240510699398395,3cyclictest0-21swapper/900:39:2515
240510699398395,2cyclictest0-21swapper/921:57:4415
2405119993960,395cyclictest3145426-21turbostat22:14:547
2405105993960,395cyclictest0-21swapper/822:29:2314
240510699395393,2cyclictest3122368-21kworker/9:1+events22:18:2315
2405105993950,394cyclictest0-21swapper/821:12:5214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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