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2025-05-03 - 02:01
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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 Sat May 03, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23834521280,124pltrace0-21swapper/119:07:431
23834521190,111pltrace0-21swapper/519:09:305
23834521000,96pltrace0-21swapper/619:07:316
2104752930,84pltrace0-21swapper/219:05:222
69472890,0sleep40-21swapper/419:35:134
2383452790,71pltrace0-21swapper/319:06:373
2375827942,7sleep40-21swapper/419:05:264
2398626942,10sleep00-21swapper/019:08:190
2383452680,45pltrace0-21swapper/719:06:547
1893952670,0pltrace0-21swapper/323:46:123
1014052200,3pltrace0-21swapper/720:40:187
2688952180,0pltrace0-21swapper/721:09:327
24243991812,5cyclictest0-21swapper/223:19:222
1680552180,0pltrace0-21swapper/721:49:007
1571452180,3pltrace54-21ksoftirqd/420:49:454
113952180,12pltrace0-21swapper/122:20:161
501552170,0pltrace0-21swapper/723:23:187
330752170,4pltrace4042-21wget00:20:143
2669152170,0pltrace0-21swapper/719:11:157
2426299171,8cyclictest0-21swapper/719:26:247
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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