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2024-04-20 - 03:15
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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 rackcslot8.osadl.org (updated Fri Apr 19, 2024 12:48:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2279911870,179ptp4l0-21swapper/107:05:371
2279911870,179ptp4l0-21swapper/107:05:371
23971991700,66cyclictest0-21swapper/1609:26:168
239349916048,111cyclictest0-21swapper/1112:25:253
239349916048,111cyclictest0-21swapper/1112:25:253
239719915014,103cyclictest0-21swapper/1610:32:378
23971991500,85cyclictest0-21swapper/1609:10:178
23889991490,89cyclictest0-21swapper/410:13:5226
23971991480,7cyclictest0-21swapper/1610:45:238
24019991470,85cyclictest0-21swapper/2307:50:2516
2398599147146,1cyclictest0-21swapper/1808:02:3710
239719914748,60cyclictest0-21swapper/1612:05:038
239719914748,60cyclictest0-21swapper/1612:05:038
239649914718,28cyclictest0-21swapper/1512:16:257
239649914718,28cyclictest0-21swapper/1512:16:247
24054991460,86cyclictest0-21swapper/2809:55:2021
239929914553,56cyclictest0-21swapper/1908:27:4211
239199914513,55cyclictest0-21swapper/911:29:0431
239199914513,55cyclictest0-21swapper/911:29:0431
23889991450,85cyclictest0-21swapper/409:15:2326
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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