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2025-09-16 - 08:03
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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 Sep 16, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
177022903883,13sleep10-21swapper/119:07:571
1794499842763,48cyclictest0-21swapper/119:12:511
1794399817737,51cyclictest0-21swapper/019:12:510
178252554531,16sleep00-21swapper/019:09:110
17943991275,28cyclictest0-21swapper/022:01:580
17943991045,87cyclictest0-21swapper/023:45:590
1794399955,72cyclictest0-21swapper/021:44:000
216899930,5rtkit-daemon2167-21rtkit-daemon22:48:140
17943998911,71cyclictest0-21swapper/022:00:000
167662800,3sleep016765-21sh23:35:180
216899790,4rtkit-daemon2167-21rtkit-daemon22:55:300
216899780,5rtkit-daemon2167-21rtkit-daemon22:54:290
216899750,5rtkit-daemon2167-21rtkit-daemon00:25:570
216899750,5rtkit-daemon2167-21rtkit-daemon00:02:460
216899740,21rtkit-daemon0-21swapper/121:22:320
216899720,5rtkit-daemon2167-21rtkit-daemon23:51:410
1794399725,48cyclictest0-21swapper/023:57:590
216899660,19rtkit-daemon2167-21rtkit-daemon23:29:410
1794399665,44cyclictest0-21swapper/020:04:000
17943996441,16cyclictest0-21swapper/000:21:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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