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2026-05-25 - 12:07
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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 rack8slot4.osadl.org (updated Mon May 25, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35729982234174,19sleep10-21swapper/119:06:201
35732242228170,18sleep20-21swapper/219:09:342
35732372214186,18sleep60-21swapper/619:09:476
35731352213184,19sleep50-21swapper/519:08:175
35730612213184,19sleep70-21swapper/719:07:157
35730002212183,19sleep30-21swapper/319:06:223
35731572207177,20sleep00-21swapper/019:08:370
35729632205176,19sleep40-21swapper/419:05:514
357345199390,34cyclictest3727835-21apt-get23:45:101
357346599340,29cyclictest856-21dbus-daemon23:05:016
357346599340,29cyclictest1-21systemd23:45:016
357346399340,32cyclictest3666088-21cron21:55:005
357345199340,33cyclictest3719016-21cron23:30:011
3573451993326,6cyclictest0-21swapper/123:05:001
357345199330,0cyclictest0-21swapper/123:40:111
357344999330,32cyclictest3579904-21cat19:20:010
357347099320,31cyclictest3730609-21apt-get23:50:107
357346599320,1cyclictest3713525-21923:20:006
3573454993232,0cyclictest0-21swapper/222:35:112
357345199320,28cyclictest0-21swapper/123:30:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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