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2025-03-13 - 18:00
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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 rackcslot4.osadl.org (updated Thu Mar 13, 2025 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
100914699501498,2cyclictest1176747-21turbostat11:54:551
100914699489487,1cyclictest1025471-21turbostat07:54:551
100914699476474,1cyclictest1169945-21turbostat11:44:551
100914699454451,2cyclictest1116800-21turbostat10:34:561
100914699452449,2cyclictest1214778-21turbostat12:40:001
100914699446441,4cyclictest1046045-21turbostat08:45:001
100914699419416,2cyclictest1064430-21turbostat09:24:551
100914699416413,2cyclictest1040177-21turbostat08:30:001
100914699413410,2cyclictest1105605-21turbostat10:15:001
100914699411407,3cyclictest1053871-21turbostat09:05:001
100914699409406,2cyclictest1086395-21turbostat09:50:001
100914699350347,2cyclictest1037558-21turbostat08:20:001
100914699350339,10cyclictest1204001-21turbostat12:25:001
100914699350339,10cyclictest1204001-21turbostat12:24:591
100914699348344,2cyclictest1075500-21turbostat09:35:001
10087472320277,27sleep10-21swapper/107:06:431
100914699304299,4cyclictest1098619-21turbostat10:05:001
100914699302300,1cyclictest1083711-21turbostat09:45:001
100914699295292,2cyclictest1094750-21turbostat10:00:011
100914699275273,1cyclictest1114034-21turbostat10:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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