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2026-04-12 - 00:57
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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 rack0slot5.osadl.org (updated Sat Apr 11, 2026 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2903459953714,522cyclictest0-21swapper/220:30:168
2903459953714,522cyclictest0-21swapper/220:30:168
2903429953419,514cyclictest0-21swapper/123:45:151
29039799518517,1cyclictest432201-21kworker/15:0+i915-unordered22:11:157
29037199513511,2cyclictest512935-21kworker/9:0+i915-unordered23:45:1515
29038499508505,2cyclictest0-21swapper/1222:10:154
2903459950618,487cyclictest0-21swapper/200:23:158
2903609950114,486cyclictest0-21swapper/620:46:1612
29039799500499,1cyclictest367762-21kworker/15:1+i915-unordered20:51:167
29035099485484,1cyclictest347698-21kworker/3:2+i915-unordered20:21:169
2903429948320,462cyclictest0-21swapper/119:48:161
2903799947722,58cyclictest0-21swapper/1119:26:373
2903939947525,30cyclictest0-21swapper/1422:59:386
2903539947526,30cyclictest0-21swapper/422:41:0010
290342994729,462cyclictest0-21swapper/120:21:161
2903799946318,29cyclictest0-21swapper/1120:17:393
2903799946315,30cyclictest0-21swapper/1121:42:383
29037199461460,1cyclictest69750irq/159-i91519:48:1615
2903429946120,440cyclictest0-21swapper/123:18:151
2903429946120,440cyclictest0-21swapper/123:18:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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