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2026-07-10 - 04:33
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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 Fri Jul 10, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
398915721000,1sleep13989159-21sed00:04:531
37979222780,2sleep20-21swapper/221:59:372
38934902560,1sleep13893489-21ssh23:01:201
3153791269,6phc2sys0-21swapper/319:55:013
3581221992421,2cyclictest4012346-21grep00:20:021
3581220992416,2cyclictest492398rtkit-daemon21:04:450
3153791241,2phc2sys0-21swapper/323:52:423
3581220992320,2cyclictest3997016-21apt-key00:10:010
3581220992213,5cyclictest3805520-21cpuspeed_turbos22:04:380
3581220992212,6cyclictest3872370-21/usr/sbin/munin22:49:470
3581220992211,6cyclictest660-21dbus-daemon23:45:020
358122199215,14cyclictest4021802-21apt-get00:29:361
358122199215,14cyclictest4021802-21apt-get00:29:361
3581221992119,1cyclictest501rcuop/220:35:011
3581221992119,1cyclictest501rcuop/220:35:011
3581221992113,3cyclictest3787938-21missed_timers21:49:481
3581222992018,1cyclictest0-21swapper/223:45:022
358122199208,5cyclictest660-21dbus-daemon23:25:011
358122199201,8cyclictest3781308-21latency_hist21:45:011
358122099209,6cyclictest0-21swapper/000:04:520
3581222991917,1cyclictest0-21swapper/222:50:012
3581222991916,1cyclictest0-21swapper/200:00:012
3581222991915,2cyclictest0-21swapper/223:23:232
358122199199,3cyclictest501rcuop/200:14:491
3581221991916,2cyclictest4035223-21latency_hist00:35:021
3581221991916,2cyclictest3997236-21apt-key00:10:021
3581221991916,2cyclictest3931780-21runrttasks23:29:261
3581221991916,2cyclictest3766733-21grep21:35:031
3581221991912,3cyclictest3970135-21kthreadcore23:54:451
3581221991910,4cyclictest0-21swapper/122:23:531
358122099199,5cyclictest0-21swapper/021:58:560
358122099199,5cyclictest0-21swapper/000:24:480
3581220991917,1cyclictest3644407-21sendmail20:00:010
3581220991916,2cyclictest3900262-21systemd-run23:05:010
3581220991916,2cyclictest3699497-21systemd-run20:45:020
3581220991910,1cyclictest491rcuog/220:39:370
3581222991816,1cyclictest0-21swapper/220:10:022
3581222991816,1cyclictest0-21swapper/200:10:022
3581222991815,1cyclictest0-21swapper/223:00:012
358122199188,3cyclictest501rcuop/222:28:191
3581221991815,2cyclictest3870714-21gmain22:45:021
3581221991815,2cyclictest3833307-21sh22:20:001
3581221991815,2cyclictest3587301-21sh19:15:001
3581221991815,2cyclictest3587301-21sh19:15:001
3581221991811,3cyclictest3888570-21kthreadcore22:59:441
3581221991810,2cyclictest67250irq/126-eno121:26:041
358122099188,5cyclictest0-21swapper/021:34:430
358122099188,4cyclictest0-21swapper/023:09:590
3581220991815,2cyclictest658-21avahi-daemon00:20:030
3581220991810,7cyclictest0-21swapper/022:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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