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2026-01-07 - 05:27
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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 792 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
1778899180,2cyclictest4099-21H222:10:212
1778899180,2cyclictest3991-21H222:10:212
1778899180,2cyclictest3983-21H222:10:212
1778899180,2cyclictest3976-21H222:10:212
1778899180,2cyclictest3976-21H222:10:212
1778899180,17cyclictest28255-21apt-config20:25:002
1778899180,17cyclictest19524-21nvmesmart_nvme022:00:202
1778899180,16cyclictest4099-21H222:10:212
1778899180,16cyclictest3985-21H222:10:212
1778899180,15cyclictest3991-21H222:10:212
1778899180,15cyclictest3985-21H222:10:212
1778899180,15cyclictest3981-21H222:10:212
1778799182,1cyclictest48962sleep100:27:351
1778799182,1cyclictest48962sleep100:27:341
1778799182,15cyclictest0-21swapper/123:50:071
1778799182,15cyclictest0-21swapper/123:49:101
17787991815,2cyclictest3991-21H222:10:211
17787991814,3cyclictest399-20systemd-journal21:24:561
17787991814,3cyclictest3987-21H222:10:211
17787991813,4cyclictest0-21swapper/119:20:161
1778799180,3cyclictest3976-21H222:10:211
1778799180,2cyclictest4035-21H222:10:211
1778799180,2cyclictest3987-21H222:10:211
1778799180,17cyclictest3991-21H222:10:211
1778799180,17cyclictest3985-21H222:10:211
1778799180,17cyclictest3979-21H222:10:211
1778799180,16cyclictest3991-21H222:10:211
1778799180,16cyclictest3983-21H222:10:211
1778799180,15cyclictest3991-21H222:10:211
17786991815,2cyclictest10907-21chrt19:55:040
17786991815,2cyclictest0-21swapper/020:50:110
1778699181,17cyclictest0-21swapper/023:35:330
1778699180,17cyclictest3989-21H222:10:210
1778699180,17cyclictest3989-21H222:10:210
17788991714,2cyclictest8637-21expr22:40:132
17788991714,2cyclictest8637-21expr22:40:132
17788991714,2cyclictest3989-21H222:10:212
17788991714,2cyclictest3985-21H222:10:212
17788991714,2cyclictest3981-21H222:10:212
17788991714,2cyclictest22577-21df23:05:132
17788991714,2cyclictest16426-21cstates21:00:152
17788991714,2cyclictest16286-21kernelversion21:55:172
1778899170,2cyclictest3991-21H222:10:212
1778899170,2cyclictest3985-21H222:10:212
1778899170,2cyclictest18669-21/usr/sbin/munin23:55:152
1778899170,2cyclictest10648-21idleruntime23:40:152
1778899170,1cyclictest3981-21H222:10:212
1778899170,1cyclictest0-21swapper/220:45:452
1778899170,1cyclictest0-21swapper/219:54:142
1778899170,16cyclictest9496-21/usr/sbin/munin21:45:132
1778899170,16cyclictest3989-21H222:10:212
1778899170,16cyclictest3989-21H222:10:212
1778899170,16cyclictest16714-21gpgv20:05:012
1778899170,16cyclictest12467-21timerandwakeup20:50:212
1778899170,16cyclictest0-21swapper/223:35:162
17787991714,2cyclictest993-21dbus-daemon21:08:591
17787991714,2cyclictest3989-21H222:10:211
17787991714,2cyclictest3987-21H222:10:211
17787991714,2cyclictest3746-21missed_timers19:40:171
17787991714,2cyclictest30736-21/usr/sbin/munin23:20:121
17787991714,2cyclictest29467-21cstates22:20:131
17787991714,2cyclictest22991-21nfsd421:10:181
17787991714,2cyclictest21161-21ntpq20:10:181
17787991713,3cyclictest3991-21H222:10:211
17787991713,3cyclictest3985-21H222:10:211
17787991713,3cyclictest3981-21H222:10:211
1778799170,2cyclictest6063-21expr00:30:141
1778799170,2cyclictest5989-21nfsd420:40:171
1778799170,2cyclictest3987-21H222:10:211
1778799170,2cyclictest3976-21H222:10:211
1778799170,2cyclictest32640-21/usr/sbin/munin20:30:201
1778799170,2cyclictest24026-21sshd23:06:361
1778799170,2cyclictest19463-21ntp_states23:55:201
1778799170,2cyclictest16567-21cat21:00:151
1778799170,17cyclictest0-21swapper/119:55:141
1778799170,16cyclictest9373-21needreboot19:50:181
1778799170,16cyclictest7268-21cat21:40:141
1778799170,16cyclictest3991-21H222:10:211
1778799170,16cyclictest3983-21H222:10:211
1778799170,16cyclictest3981-21H222:10:211
1778799170,16cyclictest3981-21H222:10:211
1778799170,16cyclictest3981-21H222:10:211
1778799170,16cyclictest29248-21cpuspeed_turbos19:30:141
1778799170,16cyclictest26432-21/usr/sbin/munin22:15:221
1778799170,16cyclictest25046-21expr21:15:141
1778799170,16cyclictest21850-21latency_hist23:05:011
1778799170,16cyclictest20989-21tr22:05:121
1778799170,16cyclictest2007-21systemd-journal23:12:171
1778799170,16cyclictest10987-21expr20:50:131
17786991715,2cyclictest0-21swapper/023:10:030
17786991714,3cyclictest0-21swapper/022:40:120
17786991714,3cyclictest0-21swapper/022:40:110
17786991714,2cyclictest0-21swapper/020:35:180
1778699170,16cyclictest0-21swapper/022:00:220
1778699170,16cyclictest0-21swapper/021:30:140
17788991614,1cyclictest0-21swapper/221:28:522
17788991613,2cyclictest17120-21fschecks_count22:55:152
1778899160,15cyclictest3983-21H222:10:212
1778899160,15cyclictest0-21swapper/222:30:172
1778899160,15cyclictest0-21swapper/221:20:122
17787991614,1cyclictest0-21swapper/122:40:131
17787991614,1cyclictest0-21swapper/122:40:121
17787991614,1cyclictest0-21swapper/119:15:141
17787991614,1cyclictest0-21swapper/100:10:121
1778799160,15cyclictest6954-21/usr/sbin/munin23:35:121
1778799160,15cyclictest20791-21/usr/sbin/munin00:00:121
1778799160,15cyclictest0-21swapper/122:35:161
1778799160,15cyclictest0-21swapper/121:25:181
1778799160,15cyclictest0-21swapper/120:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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