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2025-12-02 - 08:45
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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 Dec 02, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27789822230,2sleep30-21swapper/320:55:233
63838621020,3sleep30-21swapper/300:27:483
3972072610,2sleep30-21swapper/322:10:183
4761682320,1sleep00-21swapper/022:55:190
4761682320,1sleep00-21swapper/022:55:190
142688993024,2cyclictest170550irq/121-eno121:15:021
4951352290,1sleep10-21swapper/123:05:221
142687992320,2cyclictest1-21systemd22:35:000
4377152220,1sleep20-21swapper/222:32:172
142689992215,3cyclictest0-21swapper/222:50:122
142687992211,4cyclictest570627-21tr23:50:130
142689992119,1cyclictest0-21swapper/223:20:012
142688992115,2cyclictest170550irq/121-eno122:25:001
142687992118,2cyclictest509119-21perf23:15:000
142687992118,2cyclictest413241-21grep22:20:010
142687992115,5cyclictest142685-21cyclictest23:20:240
142687992114,6cyclictest489080-21runrttasks23:00:320
142687992112,5cyclictest1700-21systemd-logind21:45:010
142688992014,5cyclictest0-21swapper/100:30:001
142688992013,2cyclictest8734-21sendmail-mta00:24:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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