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2024-09-08 - 08:04
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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 rack0slot4.osadl.org (updated Sun Sep 08, 2024 00:46:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16691362414395,4sleep80-21swapper/819:08:0914
16692362361312,16sleep70-21swapper/719:09:2813
16690852360336,14sleep150-21swapper/1519:07:277
16691722357311,35sleep40-21swapper/419:08:3610
16691572350340,6sleep60-21swapper/619:08:2212
16691372345320,15sleep90-21swapper/919:08:1015
16691212345321,14sleep120-21swapper/1219:07:574
16692092344317,16sleep30-21swapper/319:09:089
16692172341316,15sleep110-21swapper/1119:09:173
16691922341317,14sleep50-21swapper/519:08:5311
16690372341317,14sleep100-21swapper/1019:06:502
16692252340316,14sleep130-21swapper/1319:09:185
16691892340316,14sleep20-21swapper/219:08:518
16690412340312,16sleep140-21swapper/1419:06:546
16656842339315,15sleep00-21swapper/019:05:030
16690102338315,13sleep10-21swapper/119:06:241
1669651991050,104cyclictest0-21swapper/519:15:0111
166964899102101,1cyclictest1823428-21nodedev-init22:05:1610
16696519910199,1cyclictest1939443-21nodedev-init00:20:1811
16696489910098,1cyclictest1754768-21nodedev-init20:45:1710
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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