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2026-05-11 - 15:41
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot6.osadl.org (updated Mon May 11, 2026 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21952210117,38sleep00-21swapper/007:06:110
22058210028,25sleep10-21swapper/107:07:211
2251199917,74cyclictest10698-21apt-get08:05:120
22511999113,62cyclictest0-21swapper/008:45:130
22511998914,62cyclictest0-21swapper/009:35:220
2251799885,56cyclictest0-21swapper/111:50:211
2251199887,65cyclictest2232-21wc07:40:190
2251199886,74cyclictest25433-21apt-get07:15:130
2251199876,20cyclictest6655-21apt-get09:25:130
22511998625,56cyclictest457-21dbus-daemon11:40:000
22511998616,63cyclictest0-21swapper/011:50:130
22511998611,66cyclictest0-21swapper/007:25:130
2251199854,21cyclictest243-21systemd-journal11:50:000
22511998524,20cyclictest243-21systemd-journal08:42:470
22511998523,57cyclictest243-21systemd-journal12:23:320
2251199843,73cyclictest30833-21head07:30:170
22511998427,52cyclictest472-21polkitd07:35:190
22511998417,60cyclictest0-21swapper/008:30:130
22511998416,61cyclictest0-21swapper/010:15:110
2251199838,58cyclictest1104-21apt-get09:10:130
2251199837,20cyclictest16075-21apt-get11:20:120
2251199837,20cyclictest16075-21apt-get11:20:120
2251199836,14cyclictest22588-21apt-get10:10:120
2251199833,74cyclictest26563-21aten2.4-expect08:50:150
2251199833,70cyclictest22373-21apt-get07:10:130
2251199833,22cyclictest243-21systemd-journal12:03:290
2251199833,22cyclictest243-21systemd-journal12:03:290
2251199833,21cyclictest20556-21sshd10:02:360
22511998324,18cyclictest21529-21sort10:05:270
2251199827,22cyclictest14222-21apt-get08:15:120
2251199826,20cyclictest17843-21aten2.4-expect11:25:150
22511998218,55cyclictest0-21swapper/010:50:130
22511998212,61cyclictest0-21swapper/009:20:120
2251199817,19cyclictest8395-21apt-get09:30:130
2251199817,19cyclictest8395-21apt-get09:30:130
2251199816,20cyclictest26560-21apt-get10:20:130
2251199815,19cyclictest1766-21apt10:40:110
2251199814,66cyclictest10852-21aten2.4-expect11:05:170
2251199814,18cyclictest243-21systemd-journal12:13:310
22511998120,20cyclictest243-21systemd-journal09:02:510
22511998111,60cyclictest0-21swapper/010:35:250
2251199806,19cyclictest8959-21apt-get08:00:130
2251199806,18cyclictest19554-21apt-get11:30:130
2251199803,68cyclictest7451-21taskset12:25:390
2251199803,68cyclictest3238-21/usr/sbin/munin09:15:270
22511998023,52cyclictest457-21dbus-daemon10:00:000
22511998023,49cyclictest243-21systemd-journal08:13:370
22511998022,22cyclictest243-21systemd-journal08:27:440
22511998015,57cyclictest0-21swapper/008:55:120
22511998013,60cyclictest0-21swapper/009:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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