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2025-11-29 - 14:24
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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 Sat Nov 29, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313241621140,1sleep00-21swapper/000:10:300
275800321080,1sleep12757992-21latency_hist20:25:001
30769022840,2sleep30-21swapper/323:40:243
26909442540,3sleep30-21swapper/319:30:003
28737042320,2sleep10-21swapper/121:44:111
29671672300,1sleep10-21swapper/122:35:291
2664307992614,7cyclictest0-21swapper/020:10:000
2664307992612,5cyclictest0-21swapper/022:45:020
2664307992413,7cyclictest3091657-21latency_hist23:50:010
835298230,8rtkit-daemon2770247-21chrt20:32:541
2664312992321,1cyclictest0-21swapper/222:20:022
2664312992320,1cyclictest0-21swapper/221:40:002
2664312992320,1cyclictest0-21swapper/220:05:012
2664312992320,1cyclictest0-21swapper/200:20:012
2664307992320,2cyclictest3004779-21cron23:00:010
2664307992312,6cyclictest0-21swapper/020:40:010
2664312992216,4cyclictest2721279-21turbostat19:55:002
2664310992219,2cyclictest3153088-21/usr/sbin/munin00:25:021
2664310992219,2cyclictest3153088-21/usr/sbin/munin00:25:021
266430799222,15cyclictest2891965-21/usr/sbin/munin21:55:270
2664307992212,5cyclictest0-21swapper/022:40:000
835298210,3rtkit-daemon2025-21snmpd23:21:160
2664312992118,1cyclictest0-21swapper/221:15:002
2664307992118,2cyclictest1635-21dbus-daemon23:30:010
2664307992110,6cyclictest0-21swapper/023:05:300
835298200,3rtkit-daemon8734-21sendmail-mta22:46:520
835298200,3rtkit-daemon2670379-21munin-node22:13:100
835298200,3rtkit-daemon2025-21snmpd20:33:370
835298200,2rtkit-daemon33802-21packagekitd22:09:010
835298200,2rtkit-daemon0-21swapper/021:19:030
835298200,2rtkit-daemon0-21swapper/019:27:420
28329212200,3sleep12832925-21kthreadcore21:20:221
2664312992017,1cyclictest0-21swapper/220:00:012
2664310992012,3cyclictest0-21swapper/122:45:011
2664307992017,2cyclictest2745818-21cron20:15:000
2664307992016,2cyclictest2935815-21sh22:20:030
2664307992014,5cyclictest2664300-21cyclictest22:34:130
2664307992013,5cyclictest2840053-21aten_repower_en21:25:160
835298190,1rtkit-daemon0-21swapper/019:17:050
302487291190,2phc2sys0-21swapper/323:30:273
2664312991916,1cyclictest0-21swapper/223:50:242
2664310991916,2cyclictest2801116-21systemctl21:00:001
2664310991916,2cyclictest2776961-21grep20:40:021
2664307991914,4cyclictest3179019-21systemd-run00:40:010
302487291180,3phc2sys0-21swapper/322:12:113
302487291180,2phc2sys0-21swapper/321:17:303
2664312991816,1cyclictest0-21swapper/222:00:012
2664312991815,1cyclictest0-21swapper/223:45:242
2664312991815,1cyclictest0-21swapper/223:15:002
2664312991815,1cyclictest0-21swapper/222:35:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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