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2026-07-01 - 01:42
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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 Jun 30, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286818121470,2sleep20-21swapper/209:29:592
294702721080,4sleep12947029-21awk10:25:011
30238692700,1sleep13023868-21ssh11:16:231
29512952580,1sleep02951293-21ssh10:27:570
2693747993221,2cyclictest67250irq/126-eno111:55:011
2693746993210,21cyclictest0-21swapper/009:49:560
29760932290,2sleep30-21swapper/310:44:593
2693746992922,5cyclictest0-21swapper/012:25:010
2693746992919,9cyclictest1-21systemd10:50:010
2693747992818,3cyclictest0-21swapper/110:50:021
2693746992816,8cyclictest274-21systemd-journal12:17:010
2693746992719,4cyclictest67250irq/126-eno108:39:520
2693747992623,2cyclictest660-21dbus-daemon10:35:021
2693747992623,2cyclictest3051915-21latency_hist11:35:011
2693746992620,5cyclictest660-21dbus-daemon11:20:030
2693746992618,4cyclictest67250irq/126-eno107:29:530
2693746992614,11cyclictest3105720-21cpu12:14:500
2693746992613,9cyclictest2842861-21kthreadcore09:15:000
2693747992521,3cyclictest2814721-21missed_timers08:50:001
2693747992517,4cyclictest3110638-21ssh12:15:011
2693747992511,5cyclictest1237-21mta-sts-daemon09:57:171
2693746992519,5cyclictest3059104-21latency11:40:010
2693746992515,5cyclictest492398rtkit-daemon12:00:120
2693746992513,8cyclictest1020-21runrttasks12:29:330
2693746992512,4cyclictest2694536-21sshd07:10:390
2693747992421,2cyclictest2772673-21missed_timers08:15:011
2693747992420,3cyclictest70-21kcompactd009:15:011
2693747992412,7cyclictest1242-21mta-sts-daemon11:43:531
269374699247,9cyclictest0-21swapper/012:06:040
2693746992418,5cyclictest1-21systemd11:45:010
2693746992412,8cyclictest2862021-21unixbench_multi09:25:050
2693746992411,5cyclictest3003307-21/usr/sbin/munin11:04:520
3153791230,2phc2sys0-21swapper/311:31:503
2693748992320,1cyclictest0-21swapper/209:15:012
2693747992320,2cyclictest660-21dbus-daemon07:25:011
2693747992320,2cyclictest2920042-21mailstats10:05:021
2693747992320,2cyclictest2718828-21pmu-power07:30:021
269374699238,7cyclictest2943735-21diskmemload10:23:490
269374699238,7cyclictest2785344-21date08:25:030
269374699234,4cyclictest2768159-21aten2.4-expect08:14:540
269374699233,7cyclictest0-21swapper/011:29:520
2693746992317,5cyclictest2933427-21sh10:15:010
2693746992314,2cyclictest492398rtkit-daemon11:20:220
2693746992313,9cyclictest1246-21mta-sts-daemon10:17:140
2693746992313,9cyclictest1237-21mta-sts-daemon11:32:080
2693746992313,5cyclictest2828148-21sshd09:04:400
2693748992219,1cyclictest0-21swapper/208:20:012
2693747992219,2cyclictest2854001-21grep09:20:011
2693747992219,2cyclictest0-21swapper/112:30:011
2693747992219,2cyclictest0-21swapper/111:50:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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