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2026-01-02 - 06:26
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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 20 highest latencies:
System rack9slot2.osadl.org (updated Fri Jan 02, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
214192355277,43sleep30-21swapper/33
213292306271,24sleep00-21swapper/00
213052274206,55sleep10-21swapper/11
2174899262258,2cyclictest0-21swapper/22
2174499258251,4cyclictest11530-21ntp_states1
215912257180,43sleep20-21swapper/22
2175399153149,2cyclictest0-21swapper/33
21740999994,3cyclictest634-21snmpd0
276402620,1sleep30-21swapper/33
257342480,1sleep30-21swapper/33
240112450,1sleep20-21swapper/22
146722370,2sleep30-21swapper/33
2175399309,18cyclictest0-21swapper/33
2175399309,18cyclictest0-21swapper/33
2175399309,18cyclictest0-21swapper/33
2175399298,18cyclictest0-21swapper/33
2175399288,17cyclictest0-21swapper/33
219412270,2sleep30-21swapper/33
2175399277,17cyclictest0-21swapper/33
6832260,2sleep00-21swapper/00
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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