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2025-12-26 - 13:54
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Fri Dec 26, 2025 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
759182269210,45sleep00-21swapper/019:05:280
766062249178,56sleep10-21swapper/119:07:121
2212132990,4sleep10-21swapper/123:10:391
179699790,3rtkit-daemon0-21swapper/022:13:070
1756412640,4sleep10-21swapper/122:13:031
76976995718,9cyclictest1-21systemd23:05:010
76976995717,14cyclictest142586-21/usr/sbin/munin21:30:240
76976995618,9cyclictest285674-21ssh00:35:260
76976995617,8cyclictest1-21systemd23:50:010
76976995616,11cyclictest125007-21ssh21:09:590
76976995615,14cyclictest158968-21grep21:50:240
76976995615,14cyclictest148868-21latency_hist21:40:010
76976995615,11cyclictest187984-21munin-run22:30:000
76976995614,12cyclictest276794-21grep00:25:000
76976995614,12cyclictest219524-21cat23:10:010
76976995516,10cyclictest1-21systemd20:15:000
76976995515,9cyclictest169136-21latency_hist22:05:010
76976995418,13cyclictest211287-21cron23:00:000
76976995416,9cyclictest1-21systemd21:05:010
76976995415,11cyclictest280602-21latency_hist00:30:000
76976995318,9cyclictest1-21systemd20:50:080
76976995316,14cyclictest243385-21ntpq23:40:220
76976995315,8cyclictest763-21dbus-daemon22:18:210
76976995315,11cyclictest184419-21date22:25:000
76976995314,10cyclictest133558-21sh21:20:010
76976995314,10cyclictest129579-21date21:15:010
76976995314,10cyclictest1-21systemd20:50:010
76976995218,12cyclictest194444-21taskset22:37:250
76976995217,10cyclictest81571-21latency_hist19:20:010
76976995216,8cyclictest1-21systemd23:40:010
76976995216,13cyclictest220700-21ssh23:10:260
76976995216,10cyclictest191861-21munin-run22:35:000
76976995215,9cyclictest1-21systemd19:25:000
76976995215,8cyclictest1-21systemd23:20:000
76976995215,8cyclictest1-21systemd21:00:010
76976995215,11cyclictest110982-21apt-get20:35:160
76976995215,10cyclictest234685-21munin-run23:30:000
76976995214,12cyclictest203286-21date22:50:000
179699520,4rtkit-daemon1795-21rtkit-daemon21:57:400
76976995119,8cyclictest153112-21ssh21:44:450
76976995117,8cyclictest272701-21ls00:20:000
76976995116,9cyclictest1-21systemd20:29:590
76976995116,13cyclictest250642-21/usr/sbin/munin23:50:200
76976995116,11cyclictest266055-21grep00:10:230
76976995115,9cyclictest110840-21grep20:35:010
76976995115,9cyclictest104987-21date20:20:010
76976995115,12cyclictest101153-21latency_hist20:10:010
76976995115,11cyclictest228535-21grep23:20:250
76976995113,9cyclictest199446-21sed22:45:000
76976995018,8cyclictest205515-21taskset22:51:480
76976995018,11cyclictest263276-21ssh00:05:560
76976995017,14cyclictest92183-21ntpq19:45:200
76976995016,10cyclictest141269-21sed21:30:010
76976995015,13cyclictest169720-21grep22:05:180
76976995015,12cyclictest258125-21/usr/sbin/munin00:00:150
76976995015,12cyclictest114920-21readlink20:45:020
76976995015,12cyclictest114920-21readlink20:45:010
76976995015,11cyclictest236206-21grep23:30:270
76976995015,11cyclictest106882-21latency_hist20:25:010
76976994919,10cyclictest133776-21ssh21:20:110
76976994917,11cyclictest281679-21/usr/sbin/munin00:30:220
76976994916,8cyclictest1-21systemd19:59:590
76976994916,14cyclictest154674-21/usr/sbin/munin21:45:250
76976994914,13cyclictest94411-21grep19:50:230
76976994914,12cyclictest90403-21tr19:40:230
76976994816,11cyclictest98530-21awk20:00:250
76976994814,8cyclictest85384-21grep19:29:590
76976994717,9cyclictest256719-21taskset23:58:030
76976994716,13cyclictest89370-21sed19:40:010
76976994714,12cyclictest85522-21chrt19:30:110
76976994714,11cyclictest77468-21gltestperf19:10:160
2122412430,4sleep126-21ksoftirqd/123:00:181
179699410,3rtkit-daemon0-21swapper/023:57:461
7698099400,38cyclictest266087-21runrttasks00:10:221
179699380,3rtkit-daemon0-21swapper/121:02:141
179699380,3rtkit-daemon0-21swapper/019:41:061
76980993732,3cyclictest893-21snmpd20:56:471
7698099370,35cyclictest0-21swapper/123:45:561
179699370,4rtkit-daemon1795-21rtkit-daemon22:59:271
179699370,3rtkit-daemon0-21swapper/020:29:011
179699360,4rtkit-daemon1795-21rtkit-daemon22:19:061
179699350,5rtkit-daemon1795-21rtkit-daemon00:20:011
179699350,3rtkit-daemon0-21swapper/023:42:041
179699350,3rtkit-daemon0-21swapper/021:32:471
76980993430,3cyclictest66950irq/132-enp2s021:18:091
179699340,4rtkit-daemon1795-21rtkit-daemon22:51:271
179699340,3rtkit-daemon0-21swapper/120:52:451
179699340,3rtkit-daemon0-21swapper/120:34:321
179699340,3rtkit-daemon0-21swapper/023:20:551
179699340,3rtkit-daemon0-21swapper/022:09:481
179699340,3rtkit-daemon0-21swapper/019:57:221
179699340,3rtkit-daemon0-21swapper/019:35:341
179699340,3rtkit-daemon0-21swapper/000:06:061
179699330,4rtkit-daemon1795-21rtkit-daemon20:49:271
179699330,3rtkit-daemon0-21swapper/019:30:571
179699330,3rtkit-daemon0-21swapper/000:04:121
179699320,3rtkit-daemon1795-21rtkit-daemon00:37:471
179699320,3rtkit-daemon0-21swapper/023:28:271
179699320,3rtkit-daemon0-21swapper/021:47:571
179699320,3rtkit-daemon0-21swapper/021:27:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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