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2021-07-26 - 17:37

Intel(R) Atom(TM) Processor E3950 @ 1.60GHz, Linux 5.6.19-rt12 (Profile)

Latency plot of system in rack #9, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rack9slot2 (updated Mon Jul 26, 2021 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
309192338209,92sleep10-21swapper/11
319432299261,26sleep30-21swapper/33
317532247211,24sleep00-21swapper/00
318052230193,24sleep20-21swapper/22
206112650,10sleep09-21ksoftirqd/00
196982590,1sleep30-21swapper/33
238092490,3sleep00-21swapper/00
163972470,1sleep30-21swapper/33
32144993714,20cyclictest32739-21ls0
170722370,1sleep30-21swapper/33
3214499361,32cyclictest8291-21grep0
32144993514,19cyclictest20347-21sed0
32144993512,20cyclictest1060-21expr0
3215799340,32cyclictest10301-21kworker/3:03
32144993413,19cyclictest1998-21pmu-power0
32153993312,18cyclictest26559-21grep2
3214499338,4cyclictest0-21swapper/00
32144993310,4cyclictest1076-21grep0
32144993212,18cyclictest21964-21date0
3214499321,13cyclictest24301-21grep0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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