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2026-05-18 - 21:09
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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 20 highest latencies:
System rack6slot5.osadl.org (updated Mon May 18, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1184499108175687,5079cyclictest2196-21kworker/0:009:57:080
1184499102065325,4876cyclictest13263-21kworker/0:112:25:510
118449997355079,4645cyclictest13593-21kworker/0:107:37:570
118449997345183,4546cyclictest13593-21kworker/0:107:41:370
118449995975011,4576cyclictest13593-21kworker/0:108:00:390
118449995414985,4551cyclictest13593-21kworker/0:107:48:520
118449994174737,4665cyclictest6060-21kworker/0:010:36:150
118449994044814,4579cyclictest12462-21kworker/0:211:07:390
118449993114782,4518cyclictest12462-21kworker/0:211:55:490
118449992904770,4509cyclictest19744-21kworker/0:210:03:260
118449992064614,4581cyclictest13263-21kworker/0:112:15:590
118449992044726,4467cyclictest13593-21kworker/0:109:15:390
118449991514702,4438cyclictest12462-21kworker/0:211:40:410
118449990284647,4377cyclictest13593-21kworker/0:108:16:380
118449990124616,4385cyclictest23409-21kworker/0:010:08:150
118449989734510,4458cyclictest12462-21kworker/0:211:50:500
118449989224587,4324cyclictest2196-21kworker/0:009:32:030
118449988954578,4312cyclictest12462-21kworker/0:211:17:380
118449988914572,4308cyclictest13263-21kworker/0:112:06:150
118449988534553,4289cyclictest23409-21kworker/0:010:12:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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