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2026-05-03 - 01:39
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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 Sat May 02, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6787521240,105pltrace0-21swapper/607:07:176
6787521130,104pltrace0-21swapper/307:07:073
6787521090,100pltrace0-21swapper/107:05:131
957552920,82pltrace0-21swapper/507:08:215
678752880,74pltrace0-21swapper/207:06:532
678752770,53pltrace0-21swapper/707:07:107
965526045,11sleep00-21swapper/007:09:150
730225936,18sleep40-21swapper/407:05:094
2163052330,1pltrace1283-21pltrace-run07:28:101
1758752270,4pltrace0-21swapper/711:15:117
993299240,23cyclictest0-21swapper/610:32:286
991199230,22cyclictest0-21swapper/108:25:131
992499220,15cyclictest0-21swapper/411:55:504
1543752200,6pltrace0-21swapper/709:15:177
993699190,19cyclictest0-21swapper/710:55:197
2315852190,4pltrace0-21swapper/711:25:147
1201152190,0pltrace0-21swapper/711:04:127
1093552190,0pltrace0-21swapper/710:05:407
9924991815,2cyclictest2317-21cstates08:50:124
9924991811,5cyclictest191rcu_preempt07:15:154
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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