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2026-04-07 - 16:53
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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 10 highest latencies:
System rackeslot5.osadl.org (updated Tue Apr 07, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15229993027,2cyclictest649-21gdbus11:00:001
15227993028,1cyclictest307-21systemd-journal10:50:010
15227993028,1cyclictest28388-21cron08:45:000
15227993028,1cyclictest1873-21cron07:50:000
1522799300,29cyclictest27132-21cron07:35:010
15234992927,1cyclictest14104-21cron08:15:022
1523499290,28cyclictest0-21swapper/208:35:112
1522999290,1cyclictest6169-21cron10:15:001
1522799290,1cyclictest7672-21latency_hist09:10:000
15239992828,0cyclictest13449-21apt-get10:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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