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2026-06-08 - 20:39
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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 rackfslot7.osadl.org (updated Mon Jun 08, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10958359913112,79cyclictest1256107-21/usr/sbin/munin12:00:116
1095835997718,20cyclictest1268831-21sed12:20:256
1095835997717,39cyclictest1097003-21if_err_eno207:10:176
1095835997517,39cyclictest1180703-21ntp_states09:40:196
1095835997517,39cyclictest1113101-21uniq07:40:146
1095835997414,20cyclictest1275457-21/usr/sbin/munin12:35:176
1095835997213,19cyclictest0-21swapper/608:32:016
109583599719,39cyclictest1201056-21latency_hist10:20:006
1095835997112,19cyclictest0-21swapper/610:00:376
1095835997112,19cyclictest0-21swapper/608:19:206
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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