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2026-05-11 - 05:00
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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 Mon May 11, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1177999330,28cyclictest14887-21apt-get20:25:120
11785993214,0cyclictest151rcu_preempt21:00:142
11785993028,1cyclictest635-21rs:main2
1178399300,29cyclictest649-21gdbus23:05:011
1178399300,29cyclictest18722-21dump-pmu-power19:25:001
11789992927,1cyclictest621-21dbus-daemon21:15:013
1178999290,28cyclictest0-21swapper/300:00:123
1178999290,1cyclictest15679-21cron22:45:013
1178999290,1cyclictest0-21swapper/319:15:003
11785992927,1cyclictest18714-21idleruntime-cro19:25:012
1178599290,28cyclictest7793-21sendmail-msp21:20:002
1178599290,28cyclictest15960-21apt-get22:45:112
1178399290,28cyclictest23956-21apt-get19:35:121
1178399290,28cyclictest0-21swapper/119:50:121
1178399290,28cyclictest0-21swapper/100:30:121
11779992928,1cyclictest0-21swapper/023:00:120
1177999290,28cyclictest26263-21munin-run20:49:590
1177999290,28cyclictest0-21swapper/023:35:140
11789992828,0cyclictest0-21swapper/322:35:133
11789992828,0cyclictest0-21swapper/300:10:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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