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2024-04-18 - 09:37
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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 rack4slot6.osadl.org (updated Thu Apr 18, 2024 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19356521180,55pltrace0-21swapper/719:05:157
22163521010,85pltrace0-21swapper/619:09:306
850152920,0pltrace0-21swapper/620:35:366
1935652890,84pltrace0-21swapper/519:05:145
2214028547,11sleep30-21swapper/319:05:333
2216352800,75pltrace0-21swapper/119:08:421
2233127056,10sleep20-21swapper/219:07:572
2228726240,17sleep40-21swapper/419:07:184
2238526046,10sleep00-21swapper/019:08:430
1627152350,1pltrace16275-21pltrace-run22:45:367
2865252330,6pltrace0-21swapper/719:20:237
3085552300,2pltrace0-21swapper/721:15:527
1458352270,0pltrace0-21swapper/723:45:127
900252240,0pltrace0-21swapper/723:31:117
2266699230,12cyclictest0-21swapper/321:23:233
57352220,4pltrace0-21swapper/723:17:107
2267499210,20cyclictest0-21swapper/519:15:295
1856052200,0pltrace0-21swapper/720:00:227
2856152190,4pltrace0-21swapper/700:10:197
1348552190,6pltrace78-21ksoftirqd/722:43:097
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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