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2026-01-10 - 01:24
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Fri Jan 09, 2026 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28142990,6chrt2815-21munin-node07:15:031
11722960,6chrt1171-21/usr/sbin/munin10:10:160
85099904,45cyclictest448-21dbus-daemon07:36:471
850998514,29cyclictest0-21swapper/110:10:131
85099839,42cyclictest36-21kcompactd008:30:211
850998114,24cyclictest548-21runrttasks11:25:141
850998114,23cyclictest548-21runrttasks07:55:151
84599814,26cyclictest27390-21apt-get11:25:150
84599805,22cyclictest17330-21apt-get07:55:160
845998035,10cyclictest6081-21users07:20:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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