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2026-05-07 - 02:10
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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 Thu May 07, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175729911791,13cyclictest18965-21kworker/1:122:25:131
175679911110,78cyclictest0-21swapper/023:55:120
175729910475,19cyclictest26-21ksoftirqd/121:35:111
175729910175,17cyclictest26-21ksoftirqd/120:05:141
175729910073,18cyclictest26-21ksoftirqd/120:15:121
17572999868,19cyclictest26-21ksoftirqd/119:50:111
17572999865,18cyclictest26-21ksoftirqd/122:10:131
17572999766,20cyclictest26-21ksoftirqd/122:00:131
17572999764,22cyclictest26-21ksoftirqd/123:50:131
17572999763,20cyclictest26-21ksoftirqd/100:25:121
17572999567,18cyclictest26-21ksoftirqd/120:35:121
17572999363,20cyclictest26-21ksoftirqd/120:55:241
17572999362,20cyclictest26-21ksoftirqd/123:05:151
17572999263,20cyclictest26-21ksoftirqd/122:45:141
17572999162,19cyclictest26-21ksoftirqd/119:10:111
17572999060,17cyclictest26-21ksoftirqd/120:45:121
17572999058,21cyclictest26-21ksoftirqd/121:40:121
17572999058,21cyclictest26-21ksoftirqd/121:40:121
17572999057,22cyclictest26-21ksoftirqd/120:50:141
26082890,5sleep02609-21fw_packets00:30:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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