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2026-01-07 - 10:25
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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 rackdslot0.osadl.org (updated Wed Jan 07, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1778699320,31cyclictest0-21swapper/022:30:130
17788992523,1cyclictest1100-21snmpd20:55:042
17788992523,1cyclictest1100-21snmpd20:55:032
1778699236,2cyclictest12033-21cat21:50:010
17788992216,3cyclictest455-21plymouthd20:10:172
1778799220,21cyclictest843-21systemd-network00:18:091
1778699225,16cyclictest24239-21expr22:10:130
1778799210,20cyclictest843-21systemd-network22:02:031
1778699214,3cyclictest18737-21grep23:55:160
1778699214,16cyclictest8281-21expr20:45:120
1778699214,16cyclictest25985-21sed00:09:010
1778699214,16cyclictest22792-21sed21:10:180
1778699214,16cyclictest16713-21rm20:05:020
1778699214,16cyclictest0-21swapper/022:25:180
1778699214,16cyclictest0-21swapper/021:45:010
17786992118,2cyclictest4866-21chrt19:42:300
17786992118,2cyclictest2226-21sed23:25:170
17786992118,2cyclictest2200-21cat00:25:000
17786992118,2cyclictest21813-21cat19:15:170
17786992118,2cyclictest2007-21systemd-journal00:35:570
17786992118,2cyclictest10995-21ls23:40:180
17786992117,3cyclictest31692-21munin-plugin-st19:35:000
17786992117,3cyclictest29141-21missed_timers23:15:160
17786992117,3cyclictest27692-21awk19:25:220
17786992116,5cyclictest0-21swapper/022:10:000
1778699211,18cyclictest3976-21H222:10:210
1778899200,3cyclictest18326-21cpuspeed_turbos19:10:142
1778799203,6cyclictest0-21swapper/123:29:381
1778699204,2cyclictest6164-21sed22:35:140
1778699204,15cyclictest13903-21awk23:45:180
1778699203,2cyclictest0-21swapper/000:00:210
1778699203,16cyclictest6018-21expr00:30:140
1778699203,16cyclictest47542chrt20:40:050
1778699203,16cyclictest0-21swapper/022:55:150
1778699203,16cyclictest0-21swapper/021:55:030
17786992017,2cyclictest3985-21H222:10:210
17786992017,2cyclictest3977-21cpuspeed_turbos21:35:120
17786992017,2cyclictest3450-21gsd-color21:50:210
17786992017,2cyclictest32295-21ls19:35:140
17786992017,2cyclictest29347-21ls21:20:220
17786992017,2cyclictest28956-21latency_hist22:20:010
17786992017,2cyclictest28905-21latency_hist00:15:000
17786992017,2cyclictest15235-21proc_pri22:50:200
17786992017,2cyclictest12743-21ls22:45:210
17786992017,2cyclictest0-21swapper/020:10:180
17786992017,2cyclictest0-21swapper/019:45:170
17786992017,2cyclictest0-21swapper/019:20:150
17786992016,3cyclictest30479-21cpuspeed_turbos21:25:140
17786992016,3cyclictest28739-21cat20:25:170
17786992016,3cyclictest22485-21/usr/sbin/munin20:15:130
1778899193,15cyclictest0-21swapper/219:42:522
1778899192,2cyclictest1675-21chrt19:38:072
17788991915,3cyclictest4035-21H222:10:212
17788991914,3cyclictest0-21swapper/222:05:562
17788991913,5cyclictest27177-21latency_hist23:15:012
17788991913,3cyclictest0-21swapper/219:57:422
1778899190,2cyclictest4099-21H222:10:212
1778899190,18cyclictest0-21swapper/222:16:592
1778899190,16cyclictest4099-21H222:10:212
1778899190,16cyclictest4099-21H222:10:212
1778899190,16cyclictest3989-21H222:10:212
1778899190,16cyclictest3989-21H222:10:212
1778899190,16cyclictest3983-21H222:10:212
1778799192,16cyclictest14975-21grep20:00:191
17787991914,3cyclictest0-21swapper/120:28:171
17787991914,2cyclictest3989-21H222:10:211
1778799190,18cyclictest0-21swapper/123:31:561
1778799190,16cyclictest3985-21H222:10:211
1778799190,16cyclictest3983-21H222:10:211
1778699193,2cyclictest1284-21kerneloops19:50:070
1778699192,16cyclictest29718-21expr00:15:150
1778699192,16cyclictest1100-21snmpd23:00:190
17786991917,1cyclictest4035-21H222:10:210
17786991916,2cyclictest15771-21basename21:00:010
17786991916,2cyclictest15771-21basename21:00:010
17786991916,2cyclictest0-21swapper/022:20:180
17786991916,2cyclictest0-21swapper/021:15:170
17786991916,2cyclictest0-21swapper/021:05:180
17786991916,2cyclictest0-21swapper/020:00:180
17786991915,3cyclictest0-21swapper/000:25:170
17786991915,3cyclictest0-21swapper/000:25:160
1778699191,2cyclictest25399-21cpuspeed_turbos20:20:130
1778699191,17cyclictest0-21swapper/023:05:040
1778699191,17cyclictest0-21swapper/021:00:130
1778699190,18cyclictest0-21swapper/023:30:210
1778899182,14cyclictest0-21swapper/222:47:122
17788991816,1cyclictest2755-21timerwakeupswit21:30:212
17788991816,1cyclictest0-21swapper/222:25:192
17788991815,2cyclictest4984-21cat21:35:172
17788991815,2cyclictest3981-21H222:10:212
17788991815,2cyclictest22270-21ps00:00:192
17788991815,2cyclictest14993-21nfsd422:50:172
17788991814,3cyclictest3989-21H222:10:212
17788991814,3cyclictest3976-21H222:10:212
17788991813,2cyclictest3976-21H222:10:212
1778899181,16cyclictest3981-21H222:10:212
1778899181,16cyclictest1780-21cpuspeed_turbos20:35:132
1778899180,3cyclictest1085-21gdbus23:00:202
1778899180,3cyclictest0-21swapper/220:30:142
1778899180,3cyclictest0-21swapper/220:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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