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2026-03-23 - 02:52
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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 Mon Mar 23, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29279919311853,68cyclictest11929-21crond19:35:010
28622927894,27sleep10-21swapper/119:09:421
2928994942,469cyclictest3084-21munin-node19:10:141
292799456393,57cyclictest0-21swapper/019:10:150
292899318286,16cyclictest11928-21crond19:35:001
29279913314,113cyclictest0-21swapper/021:59:590
29279912711,110cyclictest0-21swapper/020:25:590
29279911714,97cyclictest0-21swapper/023:02:590
29279910996,8cyclictest0-21swapper/023:09:590
228699950,10rtkit-daemon0-21swapper/123:44:091
2927998914,60cyclictest0-21swapper/000:01:590
144128835,37sleep00-21swapper/019:05:140
2927998415,54cyclictest0-21swapper/019:59:590
2927998354,12cyclictest0-21swapper/023:19:390
292899795,36cyclictest0-21swapper/120:40:231
2928997916,27cyclictest0-21swapper/123:59:001
292899786,31cyclictest0-21swapper/100:35:241
2928997822,18cyclictest0-21swapper/121:14:341
292899776,35cyclictest0-21swapper/122:36:011
2928997716,27cyclictest0-21swapper/120:27:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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