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2026-04-08 - 10:22
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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 rackaslot8.osadl.org (updated Wed Apr 08, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246022314287,18sleep20-21swapper/219:06:262
246652301271,20sleep10-21swapper/119:07:131
247172271237,21sleep00-21swapper/019:07:530
245722262231,21sleep30-21swapper/319:06:033
225802640,0sleep00-21swapper/022:12:280
300992620,0sleep00-21swapper/022:36:310
158992610,0sleep00-21swapper/021:10:130
53172600,0sleep10-21swapper/122:41:041
64012580,0sleep00-21swapper/022:22:170
34102580,0sleep00-21swapper/023:20:030
208272570,0sleep20-21swapper/222:30:442
94822560,0sleep00-21swapper/019:45:130
94822560,0sleep00-21swapper/019:45:130
175282500,0sleep10-21swapper/123:47:431
29762150,0sleep30-21swapper/320:40:173
201382150,0sleep10-21swapper/121:31:561
182892140,0sleep00-21swapper/023:09:220
146982120,0sleep30-21swapper/322:46:593
158952100,0sleep30-21swapper/322:08:553
26542290,0sleep20-21swapper/223:14:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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