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2026-04-18 - 10:16
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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 Sat Apr 18, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1884477997416,39cyclictest1994719-21munin-run22:30:024
1884476997411,41cyclictest0-21swapper/319:20:143
1884477997316,38cyclictest601ktimers/422:51:184
1884477997031,39cyclictest0-21swapper/423:19:304
1884477996727,40cyclictest0-21swapper/423:25:144
1884477996546,19cyclictest236199-21snmpd22:55:524
188447799645,59cyclictest2064073-21if_eno600:35:164
188447799634,59cyclictest1949463-21awk21:05:194
188447799624,39cyclictest1086-21runrttasks23:14:284
1884477996019,18cyclictest1890197-21munin-run19:20:024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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