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2026-03-26 - 22:46
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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 10 highest latencies:
System (updated Thu Mar 26, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31830211810,83sleep00-21swapper/007:00:100
31215211614,62sleep131266-21sort06:59:461
32685991143,26cyclictest4814-21runrttasks11:38:410
326859911315,23cyclictest23306-21sh10:21:120
32685991123,30cyclictest352-21runrttasks10:47:160
32685991113,35cyclictest17428-21kworker/u18:1+rpciod12:15:440
326859910952,50cyclictest1-21systemd09:56:240
326859910952,50cyclictest1-21systemd09:56:240
32685991083,35cyclictest11481-21cpuspeed11:49:420
32685991063,24cyclictest30812-21sh11:27:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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