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2026-03-31 - 12:48
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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 Tue Mar 31, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1709991279,79cyclictest0-21swapper/019:45:160
1709991198,86cyclictest0-21swapper/023:45:130
1709991179,82cyclictest0-21swapper/019:25:130
1709991169,88cyclictest0-21swapper/020:35:140
1709991169,83cyclictest0-21swapper/023:35:130
1709991167,89cyclictest0-21swapper/000:05:180
1709991149,83cyclictest0-21swapper/022:20:120
1709991148,83cyclictest0-21swapper/023:25:140
1709991148,83cyclictest0-21swapper/023:25:130
1709991148,83cyclictest0-21swapper/019:15:140
1709991139,82cyclictest0-21swapper/021:15:130
1709991139,81cyclictest0-21swapper/020:45:120
1709991139,81cyclictest0-21swapper/020:45:110
1709991119,76cyclictest0-21swapper/019:20:120
17099911116,72cyclictest0-21swapper/021:45:120
1709991109,77cyclictest0-21swapper/022:15:130
1709991108,80cyclictest0-21swapper/020:30:130
1709991099,78cyclictest0-21swapper/020:55:140
1709991098,83cyclictest0-21swapper/000:00:120
1709991098,83cyclictest0-21swapper/000:00:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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