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2025-09-16 - 04:43
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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 Tue Sep 16, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27110521170,41pltrace0-21swapper/719:05:217
29900521160,107pltrace0-21swapper/619:10:006
29900521110,107pltrace0-21swapper/219:10:012
27110521020,93pltrace0-21swapper/319:07:093
2976527460,10sleep50-21swapper/519:06:545
2966927460,10sleep10-21swapper/119:05:311
2982026046,10sleep00-21swapper/019:07:390
2985125844,10sleep40-21swapper/419:08:074
301142420,0sleep50-21swapper/523:55:225
3134652280,0pltrace0-21swapper/422:03:314
2962952270,0pltrace0-21swapper/722:59:187
3016499241,22cyclictest0-21swapper/523:03:155
3015299230,16cyclictest0-21swapper/222:31:462
30143992110,3cyclictest0-21swapper/021:23:020
3014399210,8cyclictest0-21swapper/020:21:090
842152200,2pltrace9899-21wget23:20:167
3014399200,8cyclictest0-21swapper/023:24:320
3014399200,7cyclictest0-21swapper/020:49:370
2795652200,16pltrace54-21ksoftirqd/423:55:094
509652190,0pltrace0-21swapper/720:20:127
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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