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2026-04-29 - 07:19
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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 Apr 29, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
203759911684,19cyclictest0-21swapper/021:25:130
203759911080,20cyclictest14-21ksoftirqd/020:35:240
203759910959,40cyclictest14-21ksoftirqd/023:35:120
203779910658,32cyclictest26-21ksoftirqd/121:40:151
203779910450,34cyclictest26-21ksoftirqd/121:45:121
203779910414,25cyclictest0-21swapper/122:45:151
203779910411,26cyclictest0-21swapper/122:35:141
203779910411,26cyclictest0-21swapper/122:35:141
203779910312,30cyclictest0-21swapper/119:30:141
203779910312,29cyclictest0-21swapper/121:30:161
203779910312,23cyclictest0-21swapper/100:15:141
203779910213,25cyclictest0-21swapper/120:30:141
203779910213,25cyclictest0-21swapper/100:20:151
203779910211,26cyclictest0-21swapper/119:25:151
203779910211,25cyclictest0-21swapper/123:25:141
203779910211,24cyclictest0-21swapper/123:30:141
203779910112,27cyclictest0-21swapper/120:15:141
203779910111,23cyclictest0-21swapper/122:15:261
203779910014,22cyclictest0-21swapper/122:55:141
203779910013,23cyclictest0-21swapper/122:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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