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2026-09-10 - 16:53
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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 Sep 10, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1709321260,6chrt17094-21readlink08:55:040
115899910375,14cyclictest14-21ksoftirqd/011:35:120
11381210217,38sleep00-21swapper/007:09:160
11589999973,16cyclictest14-21ksoftirqd/010:55:140
11589999973,13cyclictest14-21ksoftirqd/012:35:150
11589999971,17cyclictest14-21ksoftirqd/008:30:140
11589999772,13cyclictest14-21ksoftirqd/011:30:160
11591999649,26cyclictest26-21ksoftirqd/108:45:121
11589999674,11cyclictest14-21ksoftirqd/010:20:110
1127829616,33sleep10-21swapper/107:08:401
11589999567,15cyclictest14-21ksoftirqd/011:05:220
11589999469,16cyclictest14-21ksoftirqd/010:50:120
11589999464,16cyclictest0-21swapper/011:15:130
11589999161,16cyclictest14-21ksoftirqd/008:00:140
11589998962,16cyclictest14-21ksoftirqd/008:50:130
11589998936,45cyclictest0-21swapper/007:45:140
11589998860,15cyclictest14-21ksoftirqd/011:25:120
11589998859,18cyclictest14-21ksoftirqd/011:45:140
11589998857,20cyclictest14-21ksoftirqd/011:20:230
11589998760,17cyclictest14-21ksoftirqd/012:20:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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