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2026-05-01 - 12:17
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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 rackeslot5.osadl.org (updated Fri May 01, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1681499300,29cyclictest26408-21cron00:10:012
1681499300,29cyclictest1703-21apache200:00:002
16807993028,1cyclictest13442-21cron22:30:000
16817992928,1cyclictest0-21swapper/319:30:123
1681499290,28cyclictest0-21swapper/219:25:132
16812992927,1cyclictest0-21swapper/123:25:001
1681299290,28cyclictest3892-21apt-get00:30:131
1681299290,28cyclictest0-21swapper/119:50:121
16807992927,1cyclictest18099-21sh22:40:010
16817992828,0cyclictest0-21swapper/322:40:023
16817992828,0cyclictest0-21swapper/320:20:123
1681799280,0cyclictest0-21swapper/321:40:113
1681799280,0cyclictest0-21swapper/319:10:133
16814992826,1cyclictest0-21swapper/223:00:002
1681499280,0cyclictest0-21swapper/221:35:112
16812992827,0cyclictest21036-21apt-get22:45:121
1681299280,28cyclictest0-21swapper/121:30:131
1681299280,27cyclictest0-21swapper/123:55:131
16807992828,0cyclictest0-21swapper/019:45:130
16807992827,1cyclictest0-21swapper/019:35:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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