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2026-06-20 - 22:35
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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 Jun 20, 2026 12:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1926865999436,39cyclictest601ktimers/410:32:404
1926865999089,1cyclictest1964501-21ntpq08:15:194
192686599888,59cyclictest1889460-21kworker/u32:1+events_unbound08:00:234
1926865998869,19cyclictest2055576-21ntpq11:00:194
1926865998785,1cyclictest2048863-21apt10:50:114
1926865998445,38cyclictest2089633-21sh12:05:004
192686599792,58cyclictest2093617-21if_err_eno412:10:164
1926865997616,39cyclictest1086-21runrttasks08:06:024
1926865997336,18cyclictest2024406-21irqstats10:05:184
1926865997233,39cyclictest0-21swapper/409:56:264
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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