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2025-11-16 - 14:52
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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 rackeslot5.osadl.org (updated Sun Nov 16, 2025 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1677699310,30cyclictest19046-21idleruntime-cro19:15:010
1679099300,29cyclictest30053-21apt-get23:05:113
1679099297,0cyclictest0-21swapper/319:17:083
1679099290,28cyclictest0-21swapper/319:40:163
1679099290,1cyclictest21934-21apt-get20:30:173
1678499290,28cyclictest0-21swapper/200:25:142
1678499290,1cyclictest609-21dbus-daemon23:05:012
1678499290,1cyclictest20140-21cron22:45:002
1678499290,1cyclictest0-21swapper/223:20:012
16780992928,1cyclictest28125-21apt-get00:10:171
16780992928,1cyclictest0-21swapper/121:25:121
1678099290,28cyclictest0-21swapper/122:50:151
1678099290,28cyclictest0-21swapper/121:35:121
16776992928,0cyclictest31548-21apt-get20:50:120
1677699290,28cyclictest11665-21apt-get23:35:140
16790992828,0cyclictest0-21swapper/323:40:133
16790992826,1cyclictest20145-21cron22:45:003
1679099280,0cyclictest7016-21apt-get23:25:173
16784992828,0cyclictest0-21swapper/219:30:132
16784992825,2cyclictest23963-21sh20:35:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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