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2026-03-21 - 06:26
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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 rack3slot6.osadl.org (updated Sat Mar 21, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12870999415,66cyclictest0-21swapper/122:35:131
12870998914,61cyclictest0-21swapper/121:30:111
12870998815,62cyclictest0-21swapper/123:30:141
12870998715,61cyclictest0-21swapper/120:55:131
12870998713,63cyclictest0-21swapper/100:05:121
12870998712,65cyclictest0-21swapper/120:25:131
12870998712,61cyclictest0-21swapper/119:45:121
12870998615,57cyclictest0-21swapper/120:00:121
12870998613,63cyclictest0-21swapper/121:45:121
12870998613,57cyclictest0-21swapper/123:35:141
12870998612,63cyclictest0-21swapper/123:50:131
12870998611,67cyclictest26160-21chrt00:20:131
1286799867,71cyclictest0-21swapper/020:40:140
1286799866,17cyclictest0-21swapper/020:30:130
1286799866,16cyclictest0-21swapper/022:40:120
118022867,63sleep011837-21/usr/sbin/munin19:05:240
12870998515,56cyclictest0-21swapper/122:45:121
12870998515,56cyclictest0-21swapper/100:00:141
12870998514,60cyclictest0-21swapper/119:20:121
12870998513,59cyclictest0-21swapper/100:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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