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2025-12-12 - 00:29
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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
Characteristics of the 20 highest latencies:
System rack7slot1.osadl.org (updated Thu Dec 11, 2025 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
860212663,23sleep30-21swapper/307:07:423
1024211655,56sleep20-21swapper/207:09:252
1012211050,55sleep10-21swapper/107:09:161
72528251,26sleep00-21swapper/007:06:030
1183994120,18cyclictest0-21swapper/010:14:440
304962395,13sleep30-21swapper/308:13:223
1183993922,15cyclictest0-21swapper/012:30:270
1183993922,15cyclictest0-21swapper/011:33:490
83872385,13sleep20-21swapper/207:23:342
83872385,13sleep20-21swapper/207:23:332
300912380,1sleep022635-21stress11:51:250
24132385,10sleep30-21swapper/307:10:273
170902385,13sleep20-21swapper/207:41:332
1186993812,23cyclictest0-21swapper/311:42:383
1185993811,24cyclictest0-21swapper/211:13:482
118399388,27cyclictest0-21swapper/010:25:280
1183993820,16cyclictest0-21swapper/009:30:110
30632375,13sleep20-21swapper/207:11:542
303402375,13sleep10-21swapper/108:11:231
260632375,13sleep10-21swapper/108:03:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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