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2026-03-10 - 13:49
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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 Tue Mar 10, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308222327298,19sleep20-21swapper/219:07:422
309152274243,20sleep10-21swapper/119:08:541
309142270238,21sleep00-21swapper/019:08:530
290252262229,22sleep30-21swapper/319:05:063
93252590,0sleep30-21swapper/321:40:593
62482580,0sleep3331rcuc/300:34:023
171612580,0sleep00-21swapper/021:45:360
159552560,0sleep20-21swapper/221:25:202
100502560,0sleep10-21swapper/122:40:031
245372180,0sleep20-21swapper/200:25:162
152102180,0sleep30-21swapper/320:55:133
234032170,0sleep10-21swapper/121:10:221
133282150,0sleep00-21swapper/000:18:520
133282150,0sleep00-21swapper/000:18:520
243282140,0sleep10-21swapper/122:48:241
277092130,0sleep10-21swapper/123:48:461
70932120,0sleep00-21swapper/019:25:140
229702120,0sleep20-21swapper/223:25:582
28392110,0sleep20-21swapper/223:33:582
135292110,0sleep30-21swapper/322:03:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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