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2026-05-08 - 04:23
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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 Fri May 08, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1060210118,37sleep00-21swapper/019:06:300
128342870,4chrt36-21kcompactd000:10:551
322602855,33sleep132313-21cut19:05:141
1596998551,26cyclictest562-21runrttasks19:35:141
1596998231,18cyclictest0-21swapper/123:30:161
1596998151,15cyclictest5680-21apt-get19:20:141
1596997850,14cyclictest23513-21apt-get20:10:121
1596997740,26cyclictest8343-21apt-get22:30:141
1596997649,14cyclictest802-21apt-get23:40:131
1596997644,17cyclictest15162-21apt-get00:20:161
1596997548,14cyclictest17407-21apt-get22:55:121
1596997539,26cyclictest18634-21apt-get00:30:121
1596997444,15cyclictest9867-21apt-get00:05:111
159199745,58cyclictest1659-21apt-get19:10:120
1596997349,15cyclictest3365-21apt-get20:45:131
1596997347,14cyclictest1659-21apt-get19:10:141
1596997325,43cyclictest0-21swapper/100:25:141
1591997344,18cyclictest14-21ksoftirqd/021:10:110
1596997146,13cyclictest16486-21apt-get19:50:111
1596997140,23cyclictest6600-21seq22:25:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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