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2021-10-24 - 00:59

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 Sat Oct 23, 2021 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
156512245215,17sleep10-21swapper/11
140222233191,15sleep20-21swapper/22
154552231192,25sleep00-21swapper/00
154132230192,25sleep30-21swapper/33
295221470,2sleep21588299cyclictest2
295221470,2sleep21588299cyclictest2
300352560,1sleep330028-21munin-run3
274592560,6sleep3351ksoftirqd/33
52222480,2sleep10-21swapper/11
52222480,2sleep10-21swapper/11
205702470,3sleep213751-1kworker/2:2H2
15879994714,23cyclictest24772-21seq1
15879994714,23cyclictest24772-21seq1
15879994514,15cyclictest16778-21seq1
222032440,2sleep022209-21cpuspeed_turbos0
217822440,2sleep10-21swapper/11
97892420,2sleep29783-21perf2
1587499427,6cyclictest1071-21pmu-power0
1587999405,20cyclictest3669-21cstates1
88482390,1sleep20-21swapper/22
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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