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2026-07-07 - 19:56
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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 Tue Jul 07, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
348115821600,2sleep30-21swapper/312:14:493
346125321010,2sleep30-21swapper/311:59:503
31636372990,2sleep30-21swapper/308:34:453
31216512920,2sleep30-21swapper/307:59:473
3062540992616,3cyclictest0-21swapper/109:10:021
3062540992612,4cyclictest0-21swapper/112:04:481
3062539992618,7cyclictest3354429-21cstates10:49:420
31978182250,4sleep13196205-21kthreadcore08:59:481
3062540992515,2cyclictest0-21swapper/110:40:021
3062540992421,2cyclictest3433322-21idleruntime-cro11:40:001
3062541992320,1cyclictest0-21swapper/207:20:012
3062540992320,2cyclictest3381968-21grep11:05:031
3062539992315,7cyclictest3272895-21cstates09:54:420
306254099229,3cyclictest0-21swapper/109:20:011
3062539992219,2cyclictest660-21dbus-daemon11:20:020
3062539992219,2cyclictest3233141-21apt-get09:25:030
3062539992213,5cyclictest3430777-21kthreadcore11:39:480
3062541992118,1cyclictest0-21swapper/210:10:012
306254099214,5cyclictest660-21dbus-daemon10:10:021
3062540992118,2cyclictest3514591-21systemd12:35:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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