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2026-06-25 - 00:14
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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 Wed Jun 24, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40800112990,2sleep30-21swapper/307:10:033
1102252680,1sleep0110223-21ssh10:02:130
3111392670,1sleep1311138-21ssh12:17:411
41423792350,1sleep00-21swapper/008:00:100
1978022330,1sleep20-21swapper/211:00:102
1728102310,2sleep30-21swapper/310:45:083
4079464992823,3cyclictest0-21swapper/107:20:001
4079463992718,7cyclictest163659-21cpuspeed_turbos10:40:030
4079464992623,2cyclictest4079534-21latency_hist07:10:021
4079465992521,2cyclictest0-21swapper/208:50:022
4079464992522,2cyclictest304888-21cpuspeed_turbos12:15:011
4079463992415,5cyclictest104025-21systemd-run10:00:010
4079464992320,2cyclictest126160-21latency_hist10:15:001
4079464992317,2cyclictest67250irq/126-eno111:05:021
4079464992314,3cyclictest0-21swapper/108:50:011
407946399233,13cyclictest660-21dbus-daemon07:40:010
4079463992320,2cyclictest66932-21aten_repower_fr09:35:030
4079463992320,2cyclictest148438-21systemd10:30:010
4079463992317,5cyclictest0-21swapper/009:10:010
4079463992316,6cyclictest210989-21kthreadcore11:10:090
4079463992314,5cyclictest216498-21fschecks_time11:15:050
4079463992313,6cyclictest0-21swapper/012:25:020
4079463992313,5cyclictest0-21swapper/011:50:010
4079465992220,1cyclictest0-21swapper/210:20:012
4079464992219,2cyclictest89294-21/usr/sbin/munin09:50:031
4079464992219,2cyclictest4174402-21aten_repower_en08:30:001
4079464992219,2cyclictest187004-21sh10:55:031
407946399222,15cyclictest0-21swapper/012:30:050
4079463992219,2cyclictest4089177-21cstates07:20:020
4079463992219,2cyclictest118752-21systemd-run10:10:010
4079463992211,6cyclictest0-21swapper/010:25:020
4079465992118,1cyclictest0-21swapper/212:25:012
4079465992118,1cyclictest0-21swapper/210:30:012
4079464992118,2cyclictest693-21systemd-logind08:15:021
4079463992115,5cyclictest321732-21kthreadcore12:25:080
492398200,3rtkit-daemon1242-21mta-sts-daemon07:38:111
4079465992018,1cyclictest0-21swapper/211:50:022
4079465992018,1cyclictest0-21swapper/210:55:032
4079465992016,1cyclictest0-21swapper/209:50:012
407946599201,12cyclictest0-21swapper/211:20:022
4079465992010,3cyclictest0-21swapper/211:30:022
4079464992017,2cyclictest59744-21cpuspeed_turbos09:30:031
4079463992017,2cyclictest304975-21cstates12:15:010
4079463992016,3cyclictest81683-21latency_hist09:45:020
4079463992012,7cyclictest1247-21mta-sts-daemon12:01:250
4079463992011,5cyclictest4107290-21aten2.4-expect07:35:020
4079465991917,1cyclictest0-21swapper/210:05:022
4079465991917,1cyclictest0-21swapper/209:40:022
4079465991916,1cyclictest0-21swapper/210:40:012
407946499198,4cyclictest0-21swapper/112:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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