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2026-06-25 - 01:08
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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 Wed Jun 24, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17359211215,39sleep00-21swapper/007:05:360
42472940,6chrt0-21swapper/009:30:330
17951997917,14cyclictest14-21ksoftirqd/011:26:040
17951997741,22cyclictest14-21ksoftirqd/008:05:270
17951997741,22cyclictest14-21ksoftirqd/008:05:270
17951997632,32cyclictest14-21ksoftirqd/012:20:330
17951997524,19cyclictest14-21ksoftirqd/007:55:140
17957997444,19cyclictest26-21ksoftirqd/108:45:131
17957997443,17cyclictest0-21swapper/111:50:111
17957997326,11cyclictest26-21ksoftirqd/110:55:271
17951997336,23cyclictest14-21ksoftirqd/007:20:270
17951997324,20cyclictest14-21ksoftirqd/008:18:270
17951997323,20cyclictest14-21ksoftirqd/007:38:190
17951997317,44cyclictest0-21swapper/008:40:110
17957997240,19cyclictest0-21swapper/107:30:111
1795799722,19cyclictest23927-21idleruntime-cro07:25:001
17951997221,20cyclictest14-21ksoftirqd/009:05:320
17957997143,18cyclictest26-21ksoftirqd/108:35:141
17957997041,19cyclictest0-21swapper/109:40:111
1795799703,13cyclictest26-21ksoftirqd/107:38:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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