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2025-12-07 - 20:13
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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 rackcslot6.osadl.org (updated Sun Dec 07, 2025 12:46:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
259478224100,6sleep30-21swapper/307:05:133
25956292140121,17sleep70-21swapper/707:05:177
25975479910940,36cyclictest0-21swapper/009:58:150
25976009910333,35cyclictest0-21swapper/708:03:147
2597600999417,42cyclictest0-21swapper/708:28:147
259714628743,13sleep40-21swapper/407:06:514
2597547998617,39cyclictest0-21swapper/011:08:150
2597547998615,38cyclictest0-21swapper/010:58:150
2597600998518,35cyclictest0-21swapper/710:33:167
2597600998416,36cyclictest0-21swapper/711:18:157
2597600998416,36cyclictest0-21swapper/708:48:147
2597547998416,39cyclictest0-21swapper/012:38:150
2597547998316,37cyclictest0-21swapper/012:18:150
2597547998316,37cyclictest0-21swapper/012:18:150
2597600998216,34cyclictest0-21swapper/708:38:147
2597600998214,36cyclictest0-21swapper/712:28:167
27148392810,0sleep30-21swapper/310:15:133
259756499814,46cyclictest28-21ksoftirqd/207:28:142
259731728143,13sleep50-21swapper/507:09:175
27620952800,1sleep335-21ksoftirqd/311:30:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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