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2026-05-23 - 00:17
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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 rackeslot2.osadl.org (updated Fri May 22, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
398430522040,2sleep30-21swapper/307:50:103
6826321510,1sleep168262-21ssh11:08:561
412656021050,2sleep13851705-21mta-sts-daemon09:40:011
409234521000,2sleep30-21swapper/309:15:063
41171582680,1sleep14117157-21ssh09:32:351
1671122590,1sleep0167110-21ssh12:11:520
41571952570,2sleep14157178-21packagekitd10:00:021
246632450,2sleep30-21swapper/310:40:043
41485502430,2sleep30-21swapper/309:54:583
1438452340,1sleep00-21swapper/011:56:200
3931591992927,1cyclictest0-21swapper/208:00:012
3931591992724,1cyclictest0-21swapper/208:10:002
39576252260,2sleep20-21swapper/207:30:052
3931588992620,2cyclictest191rcu_preempt07:55:001
3931588992417,2cyclictest191rcu_preempt08:35:031
3931586992414,6cyclictest0-21swapper/011:10:010
3931591992321,1cyclictest0-21swapper/210:35:012
3931591992320,1cyclictest0-21swapper/209:50:002
3931588992318,2cyclictest134050irq/121-eno111:35:031
3931588992315,3cyclictest0-21swapper/110:25:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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