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2026-07-29 - 01:37
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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 rack3slot6.osadl.org (updated Tue Jul 28, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2376021150,7chrt23762-21kernelversion07:40:301
2516921110,6chrt25173-21cron09:15:000
11693210015,38sleep00-21swapper/007:08:410
12008999968,15cyclictest26-21ksoftirqd/112:10:131
12008999565,17cyclictest26-21ksoftirqd/108:10:251
1200399938,12cyclictest0-21swapper/012:20:130
1200399937,67cyclictest0-21swapper/008:50:120
12008998759,17cyclictest0-21swapper/110:25:121
12008998639,42cyclictest0-21swapper/111:05:131
146402850,6sleep00-21swapper/007:15:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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