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2026-09-11 - 13:12
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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 rack0slot5.osadl.org (updated Fri Sep 11, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1235839959919,44cyclictest0-21swapper/119:33:291
1235839956129,44cyclictest34-21ksoftirqd/121:17:291
1235839955330,522cyclictest0-21swapper/119:25:291
1235839955214,535cyclictest0-21swapper/123:18:291
123603995461,24cyclictest0-21swapper/623:41:2912
1236039952037,483cyclictest0-21swapper/621:12:2912
1235959950425,59cyclictest61-21ksoftirqd/422:32:2810
12360099494492,2cyclictest345274-21kworker/5:2+i915-unordered23:36:2911
12359199493493,0cyclictest0-21swapper/319:51:299
123587994835,477cyclictest0-21swapper/219:25:298
1235839947828,30cyclictest0-21swapper/119:35:501
12360099477475,2cyclictest0-21swapper/521:00:2911
12362599476476,0cyclictest164380-21kworker/11:0+i915-unordered19:51:293
12361999471470,1cyclictest69750irq/159-i91519:25:292
123591994718,462cyclictest0-21swapper/323:52:289
1236429947022,30cyclictest0-21swapper/1521:38:517
1236429946925,30cyclictest0-21swapper/1519:46:527
1236039946720,28cyclictest0-21swapper/622:13:1112
1236039946716,29cyclictest0-21swapper/622:58:5112
1236039946619,28cyclictest0-21swapper/621:16:5012
1236039946618,29cyclictest0-21swapper/622:23:1312
1236039946419,28cyclictest0-21swapper/622:27:5212
1235959946314,29cyclictest0-21swapper/419:24:5010
123591994630,462cyclictest0-21swapper/323:18:299
1236429946214,30cyclictest0-21swapper/1520:09:517
1236349946110,29cyclictest0-21swapper/1321:29:525
123583994619,30cyclictest0-21swapper/121:09:521
12361499457456,1cyclictest103026-21kworker/9:1+i915-unordered19:33:2915
1236429945615,29cyclictest0-21swapper/1519:38:297
123595994557,29cyclictest0-21swapper/400:16:5010
123595994556,30cyclictest0-21swapper/421:33:5010
123583994558,29cyclictest0-21swapper/123:40:131
123642994545,29cyclictest0-21swapper/1519:20:127
123595994545,30cyclictest0-21swapper/422:13:5110
123583994548,30cyclictest0-21swapper/123:44:511
123583994548,28cyclictest0-21swapper/100:13:521
123583994547,28cyclictest0-21swapper/121:23:131
123642994536,28cyclictest0-21swapper/1500:32:107
12362599453452,1cyclictest69750irq/159-i91523:52:283
123603994527,29cyclictest0-21swapper/621:05:2912
123595994525,29cyclictest0-21swapper/400:30:5010
123595994524,30cyclictest0-21swapper/422:05:5110
123583994526,29cyclictest0-21swapper/119:49:131
1236039945123,29cyclictest0-21swapper/621:01:5012
123595994514,29cyclictest0-21swapper/400:20:1110
123583994513,29cyclictest0-21swapper/121:06:521
123603994502,29cyclictest0-21swapper/621:57:1212
12358399450449,1cyclictest1818-21snmpd19:58:221
123642994490,30cyclictest0-21swapper/1500:00:127
1235839944829,416cyclictest0-21swapper/121:53:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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