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2026-09-07 - 08:22
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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 rackeslot2.osadl.org (updated Mon Sep 07, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
127305221640,2sleep30-21swapper/321:12:373
14743002990,2sleep30-21swapper/323:05:013
13303292780,2sleep20-21swapper/221:44:432
15196702770,2sleep10-21swapper/123:32:571
13365272760,2sleep11336415-21ssh21:49:431
13288692530,2sleep11328814-21ssh21:44:421
12509882380,2sleep30-21swapper/320:55:013
1103719992522,2cyclictest24610-21gmain23:46:171
1103718992516,8cyclictest0-21swapper/000:24:190
1103718992410,7cyclictest0-21swapper/023:29:190
1103719992316,6cyclictest24615-21JS14:54:061
110372099221,10cyclictest0-21swapper/223:04:192
1103718992213,5cyclictest1626395-21latency_hist00:30:010
1103718992210,7cyclictest0-21swapper/021:54:410
1103720992116,2cyclictest0-21swapper/221:09:202
1103720992115,2cyclictest0-21swapper/219:24:092
1103719992115,2cyclictest82050irq/121-eno121:19:411
1103718992118,2cyclictest24616-21JS14:54:060
2213291201,8phc2sys0-21swapper/322:09:213
1103719992017,2cyclictest1264422-21sh21:05:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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