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2026-03-30 - 05:25
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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 Mar 30, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3838324995411,19cyclictest0-21swapper/222:40:162
3838324995214,19cyclictest0-21swapper/221:45:162
3838327995133,0cyclictest0-21swapper/520:50:165
3838327995113,19cyclictest0-21swapper/522:55:135
3838324995113,19cyclictest0-21swapper/200:15:172
3838323995113,19cyclictest0-21swapper/122:20:151
3838323995113,19cyclictest0-21swapper/122:10:161
3838327995032,18cyclictest0-21swapper/523:40:165
3838324995012,19cyclictest0-21swapper/220:25:152
3838326994928,2cyclictest3888250-21hostname20:40:124
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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