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2026-04-21 - 03:10
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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 rack1slot8.osadl.org (updated Tue Apr 21, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204199918251749,41cyclictest20399-21munin-run19:10:010
2042099496421,65cyclictest0-21swapper/119:17:481
2042099341286,39cyclictest204212sleep119:10:011
2286991240,4rtkit-daemon2285-21rtkit-daemon22:09:401
2286991180,4rtkit-daemon2285-21rtkit-daemon19:49:081
2286991140,4rtkit-daemon2285-21rtkit-daemon23:48:561
2042099846,54cyclictest0-21swapper/120:43:591
20420998414,58cyclictest0-21swapper/100:33:591
228699820,6rtkit-daemon2285-21rtkit-daemon21:39:140
281632790,3sleep028166-21gltestperf19:30:150
228699790,4rtkit-daemon2285-21rtkit-daemon21:57:550
228699780,4rtkit-daemon2285-21rtkit-daemon23:23:011
2042099785,54cyclictest0-21swapper/100:23:001
228699770,4rtkit-daemon2285-21rtkit-daemon19:49:480
47602760,11sleep00-21swapper/021:19:380
228699760,4rtkit-daemon2285-21rtkit-daemon22:37:361
228699750,4rtkit-daemon2285-21rtkit-daemon23:29:370
228699750,4rtkit-daemon2285-21rtkit-daemon22:02:250
228699750,4rtkit-daemon2285-21rtkit-daemon21:23:190
228699750,4rtkit-daemon2285-21rtkit-daemon00:38:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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