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2025-12-06 - 09:23
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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 rack0slot5.osadl.org (updated Sat Dec 06, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
156250899721300,418cyclictest0-21swapper/1121:33:213
1562517995516,543cyclictest0-21swapper/1320:08:215
1562517995516,543cyclictest0-21swapper/1320:08:215
1562512995450,45cyclictest0-21swapper/1219:50:214
15624759953714,521cyclictest0-21swapper/323:21:219
156250899513512,1cyclictest1764408-21kworker/11:2+i915-unordered23:21:213
1562498994944,490cyclictest0-21swapper/900:06:2115
156248699488487,1cyclictest1612396-21kworker/6:1+i915-unordered20:05:2112
156248699488487,1cyclictest1612396-21kworker/6:1+i915-unordered20:05:2112
156252099486485,1cyclictest1741689-21kworker/14:0+i915-unordered22:50:216
156252099486485,1cyclictest1741689-21kworker/14:0+i915-unordered22:50:216
156248699486457,29cyclictest0-21swapper/622:50:2112
156248699486457,29cyclictest0-21swapper/622:50:2112
15624719947325,28cyclictest0-21swapper/223:25:078
156250099471470,1cyclictest1686403-21kworker/10:0+i915-unordered22:02:212
156247999470470,0cyclictest1813691-21kworker/4:2+i915-unordered00:12:2110
15624679946922,444cyclictest0-21swapper/122:46:211
15624679946922,444cyclictest0-21swapper/122:46:211
15624989946516,29cyclictest0-21swapper/921:39:4415
156250099464462,2cyclictest1706974-21kworker/10:2+i915-unordered22:06:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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