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2026-09-14 - 17:55
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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 20 highest latencies:
System rack4slot6.osadl.org (updated Mon Sep 14, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25871521140,99pltrace0-21swapper/207:05:152
2171821040,0sleep20-21swapper/209:30:162
28660521030,101pltrace0-21swapper/107:10:001
28660521010,93pltrace0-21swapper/507:08:105
2587152980,84pltrace0-21swapper/607:05:206
231732800,0sleep30-21swapper/309:31:133
2642627042,10sleep00-21swapper/007:05:050
2642426248,10sleep70-21swapper/707:05:047
2858426046,10sleep30-21swapper/307:06:443
2852925945,10sleep40-21swapper/407:05:574
882152550,9pltrace78-21ksoftirqd/710:53:057
3121652530,5pltrace78-21ksoftirqd/712:21:287
893952450,1pltrace0-21swapper/712:30:177
2266052440,2pltrace0-21swapper/711:41:377
2266052440,2pltrace0-21swapper/711:41:367
1401252440,6pltrace78-21ksoftirqd/710:59:337
1746152410,6pltrace78-21ksoftirqd/711:36:127
1071852410,10pltrace0-21swapper/711:57:547
1401252380,6pltrace78-21ksoftirqd/711:01:367
1356152380,10pltrace78-21ksoftirqd/709:25:577
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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