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2026-01-02 - 17:16
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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 Jan 02, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16001821080,2sleep30-21swapper/307:28:203
3727622390,2sleep30-21swapper/310:00:013
134351992914,6cyclictest134349-21cyclictest09:08:090
134351992522,2cyclictest363527-21grep09:55:010
134351992517,7cyclictest421895-21kthreadcore10:28:150
134352992416,3cyclictest611838-21kthreadcore12:13:181
4789452230,2sleep1478949-21switchtime10:58:221
134352992314,2cyclictest134050irq/121-eno111:31:081
13435199237,14cyclictest1-21systemd11:20:010
134352992219,2cyclictest444653-21latency_hist10:40:021
134351992219,2cyclictest134349-21cyclictest07:23:160
134351992210,8cyclictest527973-21/usr/sbin/munin11:28:110
134351992113,4cyclictest342793-21kthreadcore09:43:180
134351992110,10cyclictest623523-21kworker/u16:1-xprtiod12:29:570
134351992110,10cyclictest623523-21kworker/u16:1-xprtiod12:29:570
134352992017,2cyclictest257-21systemd-journal10:15:021
134352992017,2cyclictest257-21systemd-journal09:50:011
134352992014,2cyclictest134050irq/121-eno111:08:111
134352992013,3cyclictest483247-21cpuspeed_turbos11:03:111
134352992012,3cyclictest0-21swapper/109:45:011
13435199209,8cyclictest480505-21kworker/u16:2-rpciod11:57:290
134351992015,4cyclictest270111-21/usr/sbin/munin09:00:010
134351992014,5cyclictest645010-21tr12:33:110
134351992011,7cyclictest1290-21dbus-daemon11:13:230
134351992010,9cyclictest0-21swapper/010:48:110
134351992010,7cyclictest609273-21cstates12:13:130
134351992010,6cyclictest470579-21runrttasks10:53:550
134351992010,6cyclictest134349-21cyclictest10:59:010
13435199200,15cyclictest0-21swapper/009:39:140
2649091190,2phc2sys0-21swapper/311:54:523
2649091190,13phc2sys0-21swapper/309:11:083
134352991912,3cyclictest361974-21/usr/sbin/munin09:53:221
13435199199,8cyclictest0-21swapper/009:15:020
13435199199,5cyclictest319252-21kworker/u16:1-events_unbound09:57:190
134351991916,2cyclictest444730-21/usr/sbin/munin10:40:020
134351991915,3cyclictest257-21systemd-journal11:35:010
134351991913,5cyclictest29021-21rtkit-daemon11:41:020
134351991913,5cyclictest29021-21rtkit-daemon11:41:020
134351991912,5cyclictest399673-21cut10:15:010
13435199191,17cyclictest617742-21/usr/sbin/munin12:18:230
134351991911,7cyclictest480505-21kworker/u16:2+nfsiod12:06:530
134351991911,7cyclictest246003-21kworker/u16:3+nfsiod11:36:570
134351991910,7cyclictest319252-21kworker/u16:1+nfsiod09:34:390
5254922180,1sleep20-21swapper/211:25:012
4045902180,2sleep20-21swapper/210:18:192
2902298180,2rtkit-daemon0-21swapper/107:48:391
2649191180,1ptp4l0-21swapper/312:05:003
2649091180,4phc2sys0-21swapper/311:12:043
134352991815,2cyclictest605071-21timerandwakeup12:08:231
134352991810,4cyclictest134349-21cyclictest12:31:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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