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2026-05-26 - 21:53
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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 May 26, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174722729705,18sleep00-21swapper/007:09:200
17575995412,516cyclictest18175-21ps09:47:450
1757699478407,48cyclictest0-21swapper/107:15:121
1757599450377,52cyclictest0-21swapper/007:15:120
173662133114,12sleep10-21swapper/107:08:191
2924621030,4sleep041ktimersoftd/007:40:200
1757599895,61cyclictest0-21swapper/010:12:010
325462870,5sleep132551-21head07:50:151
312042840,12sleep01757599cyclictest07:45:250
251402820,6sleep10-21swapper/109:00:121
228699740,3rtkit-daemon2285-21rtkit-daemon10:25:201
1757699713,61cyclictest8627-21ntp_states09:30:221
1757599696,43cyclictest0-21swapper/009:34:000
17575996942,21cyclictest0-21swapper/010:35:190
1757699682,57cyclictest26849-21ssh11:00:281
17575996841,21cyclictest0-21swapper/010:21:320
1757699673,8cyclictest6543-21ssh12:20:251
1757699669,49cyclictest1568-21runrttasks10:36:371
1757699665,53cyclictest0-21swapper/110:15:191
1757699663,8cyclictest18213-21munin-node08:40:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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