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2025-06-23 - 21:40
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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 rackfslot7.osadl.org (updated Mon Jun 23, 2025 12:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
766256996423,39cyclictest848129-21kworker/0:0+ice10:28:280
766262996143,18cyclictest0-21swapper/609:45:226
76625699580,39cyclictest896916-21awk11:00:010
76625699580,18cyclictest0-21swapper/012:14:500
76625699580,0cyclictest0-21swapper/008:13:230
766256995740,0cyclictest0-21swapper/008:50:250
76625699570,18cyclictest0-21swapper/007:40:480
76625699570,17cyclictest0-21swapper/010:02:220
766256995618,19cyclictest839654-21kworker/0:2+ice09:22:200
76625699540,14cyclictest0-21swapper/011:14:060
76625699540,14cyclictest0-21swapper/011:14:060
766258995314,20cyclictest0-21swapper/209:30:232
766256995233,19cyclictest0-21swapper/010:39:550
766259995113,19cyclictest0-21swapper/308:20:173
766259995112,39cyclictest0-21swapper/309:00:203
766256995132,19cyclictest0-21swapper/010:47:010
766256995132,19cyclictest0-21swapper/009:35:380
766256995130,21cyclictest0-21swapper/010:50:180
766256995032,18cyclictest0-21swapper/012:39:100
766256995032,18cyclictest0-21swapper/008:01:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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