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2026-04-20 - 21:21
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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 Mon Apr 20, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175820321070,2sleep01758135-21ssh12:30:570
175820321070,2sleep01758135-21ssh12:30:570
15699772960,2sleep20-21swapper/210:25:572
16978572950,2sleep20-21swapper/211:50:552
17075552750,1sleep01707553-21ssh12:00:430
16998562690,1sleep11699855-21ssh11:55:151
16466102560,1sleep01646608-21ssh11:18:540
1297785992915,6cyclictest1511155-21systemd09:50:000
1297785992617,2cyclictest1290-21dbus-daemon11:40:010
1297790992519,2cyclictest17350irq/127-ahci[0000:00:17.0]08:40:001
1297795992321,1cyclictest0-21swapper/211:40:012
1297790992319,3cyclictest1-21systemd11:20:001
1297785992320,2cyclictest1496229-21systemd-run09:40:020
1297785992320,2cyclictest1304491-21systemd-run07:15:010
1297790992219,2cyclictest1752184-21systemd12:30:011
1297790992216,2cyclictest134050irq/121-eno111:08:411
1297795992119,1cyclictest0-21swapper/211:20:012
1297795992118,1cyclictest0-21swapper/208:35:002
1297790992118,2cyclictest1714708-21sh12:05:011
1297790992118,2cyclictest1304240-21proc_pri07:15:011
1297790992117,3cyclictest1290-21dbus-daemon11:45:541
1297790992112,4cyclictest0-21swapper/111:55:011
129778599219,7cyclictest0-21swapper/008:10:420
129778599218,6cyclictest0-21swapper/011:12:420
129778599217,12cyclictest1450763-21systemd-run09:10:010
1297785992117,2cyclictest0-21swapper/010:25:000
13246272200,1sleep00-21swapper/007:25:560
1297795992018,1cyclictest0-21swapper/208:15:012
1297795992017,1cyclictest0-21swapper/209:35:012
1297790992017,2cyclictest949982-21kworker/u16:0-events_unbound09:20:011
1297790992017,2cyclictest1381561-21apt-key08:15:001
129778599209,6cyclictest0-21swapper/012:20:430
129778599209,6cyclictest0-21swapper/010:45:550
1297785992017,2cyclictest3824565-21in:imuxsock11:25:000
1297785992016,3cyclictest3880722-21gmain08:55:010
1297785992014,5cyclictest1730097-21aten2.4-expect12:15:430
1297785992013,6cyclictest1533272-21runrttasks10:03:590
129779599197,8cyclictest0-21swapper/210:40:012
1297795991917,1cyclictest0-21swapper/209:20:012
129779099199,4cyclictest3851703-21mta-sts-daemon10:51:331
1297790991916,2cyclictest1325216-21/usr/sbin/munin07:30:011
1297790991916,2cyclictest1318825-21cron07:25:001
1297790991915,3cyclictest1290-21dbus-daemon09:40:011
129778599198,7cyclictest1326-21systemd-logind11:30:000
129778599192,12cyclictest0-21swapper/007:43:430
1297785991916,2cyclictest1692029-21latency_hist11:50:000
1297785991916,2cyclictest1407095-21sh08:35:020
129778599191,13cyclictest0-21swapper/011:32:560
2649091180,3phc2sys0-21swapper/312:37:113
1297795991816,1cyclictest0-21swapper/211:15:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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