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2026-03-24 - 22:04
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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 50 highest latencies:
System rackeslot2.osadl.org (updated Tue Mar 24, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41783822970,1sleep10-21swapper/111:56:281
40870932760,1sleep00-21swapper/011:06:090
458542350,2sleep30-21swapper/312:31:333
3737953992118,2cyclictest1288-1atopacctd10:55:000
3737953992112,5cyclictest3942301-21kthreadcore09:41:280
3737953992112,5cyclictest3897358-21kthreadcore09:16:270
3737953992112,5cyclictest3897358-21kthreadcore09:16:270
3737953992110,7cyclictest3789565-21sh07:51:220
3737954992013,1cyclictest601rcuop/307:40:001
373795399209,6cyclictest0-21swapper/009:56:290
3737953992010,4cyclictest3927298-21timerandwakeup09:31:320
373795399200,16cyclictest0-21swapper/008:36:320
3737955991916,1cyclictest0-21swapper/212:20:002
3737955991911,4cyclictest0-21swapper/209:26:292
3737954991916,2cyclictest3964341-21perf09:55:011
3737954991915,3cyclictest3955682-21dump-pmu-power09:50:001
3737954991912,2cyclictest134050irq/121-eno110:06:261
3737954991911,4cyclictest1426-21gdbus10:50:001
3737954991911,3cyclictest52749-21kthreadcore12:36:271
373795399198,6cyclictest0-21swapper/010:15:010
3737953991911,6cyclictest0-21swapper/012:05:020
373795399190,3cyclictest3784910-21cat07:46:260
2649091191,2phc2sys0-21swapper/311:53:193
3737955991816,1cyclictest0-21swapper/209:40:022
3737955991815,2cyclictest0-21swapper/210:20:012
3737955991815,1cyclictest0-21swapper/210:30:012
3737955991815,1cyclictest0-21swapper/208:55:022
3737955991815,1cyclictest0-21swapper/208:13:302
3737955991815,1cyclictest0-21swapper/208:00:012
3737954991815,2cyclictest3744648-21kthreadcore07:15:011
3737954991815,2cyclictest1296-21polkitd11:30:001
3737954991815,2cyclictest1290-21dbus-daemon11:40:001
3737954991815,2cyclictest1-21systemd10:05:011
3737954991814,3cyclictest4165155-21aten_repower_fr11:51:191
3737954991810,3cyclictest0-21swapper/111:20:021
373795399187,6cyclictest0-21swapper/009:51:200
3737953991815,2cyclictest4025325-21apt-key10:30:010
3737953991811,6cyclictest0-21swapper/011:50:020
2649091181,3phc2sys0-21swapper/312:11:453
2649091181,2phc2sys0-21swapper/310:16:263
2649091180,2phc2sys0-21swapper/311:24:133
3737955991715,1cyclictest0-21swapper/211:41:312
3737955991714,1cyclictest0-21swapper/209:46:242
3737955991714,1cyclictest0-21swapper/209:25:012
373795499179,3cyclictest0-21swapper/110:45:011
373795499178,4cyclictest0-21swapper/110:31:301
373795499172,7cyclictest17293-21kthreadcore12:16:271
3737954991714,2cyclictest3889885-21sed09:11:281
3737954991714,2cyclictest0-21swapper/109:30:021
3737954991713,3cyclictest35349-21kthreadcore12:26:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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