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2026-06-19 - 12:04
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Fri Jun 19, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
253223721480,1sleep12532236-21ssh23:20:501
253223721480,1sleep12532236-21ssh23:20:501
221705321220,2sleep0191rcu_preempt19:30:250
251183621000,2sleep30-21swapper/323:10:103
23930162890,2sleep30-21swapper/321:50:023
24443102680,1sleep12444309-21ssh22:24:191
2184668992421,1cyclictest0-21swapper/200:40:012
2184666992413,10cyclictest660-21dbus-daemon22:50:020
2184668992320,1cyclictest0-21swapper/222:50:022
218466799239,5cyclictest0-21swapper/100:00:101
2184668992219,2cyclictest0-21swapper/223:55:022
2184666992219,2cyclictest3937-21cron20:00:010
2184666992219,2cyclictest2429967-21grep22:15:020
2184668992119,1cyclictest0-21swapper/220:50:012
2184668992118,1cyclictest0-21swapper/223:10:022
2184668992118,1cyclictest0-21swapper/220:10:202
2184668992118,1cyclictest0-21swapper/200:20:022
2184667992118,2cyclictest274-21systemd-journal00:00:011
2184666992118,2cyclictest658-21avahi-daemon23:55:010
2184666992111,9cyclictest2622530-21ssh00:25:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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