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2025-11-07 - 12:01
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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 Fri Nov 07, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
182152288255,21sleep20-21swapper/219:05:272
185952281224,18sleep30-21swapper/319:09:593
182802273239,22sleep10-21swapper/119:06:191
184432264230,22sleep00-21swapper/019:08:020
254542710,1sleep325455-21unixbench-2d19:20:233
307262670,0sleep10-21swapper/100:06:031
25672640,1sleep22573-21gltestperf00:35:152
180212620,1sleep10-21swapper/122:00:221
73732610,0sleep17374-21sh00:13:441
320762580,1sleep00-21swapper/022:57:030
215062570,0sleep30-21swapper/321:40:303
137402570,0sleep10-21swapper/100:18:321
12552550,0sleep10-21swapper/122:58:441
81352530,0sleep10-21swapper/122:40:021
49232520,0sleep00-21swapper/022:14:260
241872200,0sleep10-21swapper/123:38:491
324012190,0sleep00-21swapper/023:20:370
310882190,0sleep10-21swapper/119:35:141
139162180,0sleep20-21swapper/200:18:452
15662170,0sleep00-21swapper/021:27:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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