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2025-11-26 - 16:50
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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 Wed Nov 26, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1248599340,29cyclictest1-21systemd07:25:012
12485993126,4cyclictest609-21dbus-daemon08:55:002
12490993028,1cyclictest31480-21awk11:15:013
1249099300,29cyclictest303-21systemd-journal07:30:013
12477993028,1cyclictest26788-21cron07:40:000
1247799301,1cyclictest63250irq/126-eno108:45:120
1249099290,28cyclictest6692-21apt-get08:05:133
1249099290,28cyclictest0-21swapper/311:55:133
1249099290,28cyclictest0-21swapper/308:30:123
1249099290,28cyclictest0-21swapper/307:45:133
1249099290,1cyclictest8454-21perf11:35:003
12485992927,1cyclictest32319-21cron09:00:002
12485992927,1cyclictest22444-21awk12:05:012
1248599290,28cyclictest3190-21munin-run10:15:002
1248099290,28cyclictest3766-21munin-run11:25:021
1248099290,28cyclictest20973-21apt-get08:35:101
1248099290,1cyclictest609-21dbus-daemon09:25:011
1248099290,1cyclictest27376-21apt-get12:15:141
12477992929,0cyclictest0-21swapper/010:04:020
12490992828,0cyclictest24652-21apt-get07:35:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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