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2026-05-20 - 12:26
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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 rack5slot3.osadl.org (updated Wed May 20, 2026 00:54:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1801699704111,211cyclictest0-21swapper/221:49:582
1801899680170,507cyclictest64450irq/122-eth000:02:364
180179966068,296cyclictest0-21swapper/323:10:143
180199965724,549cyclictest0-21swapper/522:49:065
1801599652103,84cyclictest25847-21kworker/u16:123:44:451
180199963134,466cyclictest0-21swapper/522:04:285
180189962433,507cyclictest0-21swapper/420:55:134
180159961624,85cyclictest0-21swapper/100:18:461
1801999613272,338cyclictest14816-21rm22:59:055
1801899613146,464cyclictest64450irq/122-eth023:42:394
1802099612104,126cyclictest0-21swapper/622:49:176
1801799607100,296cyclictest0-21swapper/323:53:003
180219958734,423cyclictest0-21swapper/722:59:157
180179958674,296cyclictest0-21swapper/321:38:493
180189958531,464cyclictest0-21swapper/421:50:014
1801699585287,296cyclictest321ktimersoftd/223:53:452
180189958329,84cyclictest0-21swapper/420:00:234
1801999582328,84cyclictest25847-21kworker/u16:122:38:555
1801799580115,127cyclictest0-21swapper/323:55:173
180199957569,334cyclictest1923-21sh23:44:135
180189957522,550cyclictest0-21swapper/423:10:154
180219957466,126cyclictest0-21swapper/722:49:177
180209957318,338cyclictest0-21swapper/623:45:286
180189957116,296cyclictest0-21swapper/400:05:074
180159956554,296cyclictest0-21swapper/121:48:491
1801499565312,43cyclictest0-21swapper/023:55:070
18018995597,549cyclictest0-21swapper/421:50:094
180199955444,341cyclictest0-21swapper/523:00:075
18015995511,126cyclictest0-21swapper/100:39:051
180209954834,423cyclictest0-21swapper/623:09:086
180169954779,465cyclictest0-21swapper/222:59:052
180189954534,422cyclictest0-21swapper/423:08:254
180149954577,295cyclictest0-21swapper/022:49:170
180209954475,211cyclictest0-21swapper/620:55:356
180199954336,344cyclictest0-21swapper/523:29:245
1801599543202,126cyclictest121rcu_preempt22:59:311
180199954133,126cyclictest0-21swapper/500:02:495
180149954135,84cyclictest0-21swapper/022:57:490
1801899540285,253cyclictest481ktimersoftd/420:52:144
180209953969,255cyclictest0-21swapper/622:40:106
180189953929,126cyclictest0-21swapper/422:59:324
180189953830,126cyclictest0-21swapper/419:58:494
180219953669,84cyclictest0-21swapper/721:40:027
1802099536111,127cyclictest4370-21taskset22:03:516
180149953325,84cyclictest0-21swapper/000:39:110
1802199532150,380cyclictest18012-21cyclictest00:04:597
180149953221,126cyclictest0-21swapper/023:45:280
180169953122,84cyclictest1553-21runrttasks23:07:532
180159952964,302cyclictest0-21swapper/121:40:171
1801499529314,84cyclictest0-21swapper/023:54:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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