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2025-11-17 - 05:03
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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 Mon Nov 17, 2025 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32757521140,110pltrace0-21swapper/319:05:233
3275752940,85pltrace0-21swapper/619:05:176
314952890,81pltrace0-21swapper/719:09:097
2468552770,2pltrace0-21swapper/620:43:006
298627561,10sleep50-21swapper/519:05:595
3275752740,65pltrace0-21swapper/119:07:241
302126942,7sleep40-21swapper/419:06:304
312626551,10sleep20-21swapper/219:07:562
295126045,11sleep00-21swapper/019:05:300
601252520,1pltrace6014-21tee19:12:586
2916152340,0pltrace0-21swapper/719:55:197
1910852330,1pltrace0-21swapper/520:33:005
350299240,23cyclictest0-21swapper/221:09:252
349999230,22cyclictest0-21swapper/119:10:301
1297352220,16pltrace0-21swapper/622:19:156
682352190,2pltrace0-21swapper/700:05:227
1074452190,2pltrace12249-21http_loadtime20:20:167
3525991812,5cyclictest0-21swapper/721:43:507
352099186,8cyclictest0-21swapper/600:20:206
352099180,2cyclictest0-21swapper/622:35:186
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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