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2026-05-22 - 22:00
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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 rack1slot8.osadl.org (updated Fri May 22, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1942099957866,82cyclictest25393-21hwlatdetect07:25:130
1942199935849,47cyclictest25400-21hwlatdetect07:25:141
19420995044,489cyclictest0-21swapper/007:10:030
1942099867,29cyclictest0-21swapper/010:06:130
1942099856,31cyclictest0-21swapper/011:03:110
1942099856,31cyclictest0-21swapper/009:29:490
19420998222,17cyclictest0-21swapper/012:10:000
1942099816,29cyclictest0-21swapper/010:33:490
1942099816,29cyclictest0-21swapper/009:50:180
19420998018,17cyclictest0-21swapper/010:41:500
1942099796,33cyclictest0-21swapper/011:22:360
1942099795,31cyclictest0-21swapper/010:23:500
1942099787,32cyclictest0-21swapper/012:20:550
1942099787,29cyclictest0-21swapper/011:46:170
1942099787,18cyclictest0-21swapper/010:45:220
1942099787,16cyclictest0-21swapper/008:35:250
1942099786,32cyclictest0-21swapper/012:13:590
1942099786,31cyclictest0-21swapper/010:37:150
1942099785,62cyclictest0-21swapper/008:40:260
1942099777,31cyclictest0-21swapper/010:18:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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