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2026-04-17 - 00:36
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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 rack1slot1.osadl.org (updated Thu Apr 16, 2026 12:45:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3066125580,11sleep121-21ksoftirqd/107:05:231
3066125580,11sleep121-21ksoftirqd/107:05:231
308292222143,64sleep00-21swapper/007:05:510
308292222143,64sleep00-21swapper/007:05:510
290372208151,45sleep20-21swapper/207:05:052
290372208151,45sleep20-21swapper/207:05:052
310702201161,26sleep30-21swapper/307:09:013
310702201161,26sleep30-21swapper/307:09:003
7072630,0sleep30-21swapper/311:26:313
38992240,0sleep10-21swapper/108:25:141
178252180,0sleep00-21swapper/009:41:030
3124899130,0cyclictest0-21swapper/010:00:100
31262991211,1cyclictest0-21swapper/212:20:202
3124899123,4cyclictest30595-21date08:15:000
3126299119,1cyclictest0-21swapper/210:17:502
3126299115,4cyclictest28-21ksoftirqd/208:24:592
31262991110,1cyclictest0-21swapper/209:58:092
3127399108,1cyclictest35-21ksoftirqd/311:00:003
3126299109,1cyclictest0-21swapper/212:17:352
3126299109,1cyclictest0-21swapper/210:57:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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