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2026-06-07 - 20:14
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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 Sun Jun 07, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255459910416,17cyclictest0-21swapper/008:40:100
267212940,5chrt26362-21/usr/sbin/munin10:10:200
25550999249,25cyclictest26-21ksoftirqd/108:30:101
25545999066,13cyclictest0-21swapper/012:20:130
25545998969,12cyclictest14-21ksoftirqd/012:15:150
25550998852,19cyclictest26-21ksoftirqd/111:55:241
237302850,17sleep0171rcuc/010:00:340
25545998251,18cyclictest0-21swapper/008:50:120
25545998152,16cyclictest14-21ksoftirqd/008:55:130
2379928130,39sleep00-21swapper/007:05:120
25545998059,11cyclictest14-21ksoftirqd/009:45:120
25545998054,18cyclictest0-21swapper/011:45:120
25550997945,20cyclictest26-21ksoftirqd/108:40:141
25550997945,19cyclictest26-21ksoftirqd/107:15:131
25545997948,19cyclictest14-21ksoftirqd/010:05:110
25545997933,32cyclictest25540-21cyclictest08:19:170
25545997861,10cyclictest14-21ksoftirqd/009:40:120
25545997859,9cyclictest14-21ksoftirqd/009:30:110
25545997853,14cyclictest14-21ksoftirqd/010:30:100
25545997852,17cyclictest14-21ksoftirqd/010:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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