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2026-03-24 - 13:53
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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 Mar 24, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
185742990969,15sleep00-21swapper/007:06:250
1897199898827,45cyclictest0-21swapper/007:25:150
1897299790723,36cyclictest0-21swapper/107:25:151
1897199445341,61cyclictest0-21swapper/007:10:030
185332426404,15sleep10-21swapper/107:05:581
2286991180,28rtkit-daemon2285-21rtkit-daemon10:17:471
18972991174,98cyclictest0-21swapper/107:10:031
2286991160,30rtkit-daemon2285-21rtkit-daemon11:07:131
189719911415,92cyclictest0-21swapper/011:08:590
2286991120,32rtkit-daemon2285-21rtkit-daemon09:43:261
2286991120,32rtkit-daemon2285-21rtkit-daemon08:18:001
2286991110,33rtkit-daemon2285-21rtkit-daemon12:29:051
2286991110,32rtkit-daemon2285-21rtkit-daemon09:07:561
2286991110,31rtkit-daemon2285-21rtkit-daemon08:46:501
2286991110,31rtkit-daemon2285-21rtkit-daemon08:43:151
2286991110,31rtkit-daemon2285-21rtkit-daemon07:55:001
189719911112,93cyclictest0-21swapper/010:06:000
2286991100,32rtkit-daemon2285-21rtkit-daemon11:45:041
2286991100,32rtkit-daemon2285-21rtkit-daemon10:39:381
2286991100,32rtkit-daemon2285-21rtkit-daemon10:13:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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