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2026-07-14 - 00:23
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Mon Jul 13, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69609912194,18cyclictest14-21ksoftirqd/008:45:130
2581121170,5chrt25806-21apt-get08:00:141
69609911078,20cyclictest14-21ksoftirqd/007:20:140
69609910977,19cyclictest14-21ksoftirqd/007:55:140
69609910512,79cyclictest0-21swapper/008:55:150
69609910413,76cyclictest0-21swapper/008:25:140
6960991028,59cyclictest0-21swapper/009:25:130
69609910248,39cyclictest14-21ksoftirqd/011:40:130
94721010,7chrt950-21unixbench_singl09:50:371
69609910112,75cyclictest0-21swapper/011:00:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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