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2026-08-18 - 15:04
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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 highest latencies:
System rackdslot0.osadl.org (updated Tue Aug 18, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30778992516,9cyclictest0-21swapper/121:33:071
3077899222,17cyclictest0-21swapper/100:05:341
30778992220,1cyclictest21-21ksoftirqd/123:06:331
30773992119,1cyclictest17057-21if_eno121:35:180
30783992018,1cyclictest0-21swapper/219:10:162
3077899204,1cyclictest0-21swapper/123:43:311
30778992012,4cyclictest0-21swapper/122:05:121
30778992012,4cyclictest0-21swapper/122:05:121
3078399192,1cyclictest5577-21grep21:15:152
3078399192,1cyclictest5577-21grep21:15:152
30783991917,1cyclictest0-21swapper/220:15:152
3078399190,17cyclictest13096-21sed21:30:022
30778991913,3cyclictest0-21swapper/100:30:171
3077899190,18cyclictest0-21swapper/123:54:541
3077399193,15cyclictest0-21swapper/000:13:030
3077399190,18cyclictest15954-21nfsd422:30:190
3077399190,18cyclictest15954-21nfsd422:30:180
3078399183,14cyclictest0-21swapper/219:42:422
30783991817,1cyclictest0-21swapper/220:45:202
30783991816,1cyclictest0-21swapper/221:35:022
30783991815,2cyclictest8003-21processes00:10:192
30783991815,2cyclictest4445-21taskset22:10:142
30783991815,2cyclictest14550-21snapd20:07:582
30783991815,2cyclictest1274-21runrttasks23:24:522
30783991814,3cyclictest1085-21gdbus22:50:212
3078399181,16cyclictest0-21swapper/220:55:202
3078399180,17cyclictest1461-21/usr/sbin/munin19:15:122
3077899182,15cyclictest0-21swapper/122:52:311
30778991817,1cyclictest0-21swapper/121:11:301
30778991814,3cyclictest30588-21anvil21:04:511
3077899180,2cyclictest399-20systemd-journal00:39:001
3077899180,17cyclictest10601-21cpuspeed_turbos21:25:151
3077899180,15cyclictest0-21swapper/123:57:571
3077399182,15cyclictest0-21swapper/022:04:560
30773991815,2cyclictest22516-21chrt22:43:520
30773991815,2cyclictest1351-21lxd19:10:510
30773991814,3cyclictest17650-21grep00:30:140
30773991813,4cyclictest11588-21nfsd423:20:190
30773991812,3cyclictest0-21swapper/019:45:010
3077399180,17cyclictest21498-21munin-plugin-st21:45:000
3077399180,17cyclictest21498-21munin-plugin-st21:45:000
30783991716,1cyclictest28-21ksoftirqd/219:21:362
30783991715,1cyclictest20682-21processes21:40:222
30783991715,1cyclictest20682-21processes21:40:212
30783991715,1cyclictest0-21swapper/223:45:042
30783991715,1cyclictest0-21swapper/220:40:532
30783991714,2cyclictest7999-21sendmail_mailqu22:15:202
30783991714,2cyclictest32643-21smartctl23:00:192
30783991714,2cyclictest32333-21memory21:05:182
30783991714,2cyclictest31430-21ntpq23:55:192
30783991714,2cyclictest30100-21apache_volume22:00:132
30783991714,2cyclictest27800-21expr23:50:142
30783991714,2cyclictest23140-21nfsd423:40:172
30783991714,2cyclictest13231-21nfsd400:20:202
30783991714,2cyclictest1085-21gdbus20:25:222
30783991714,2cyclictest0-21swapper/223:35:002
3078399171,15cyclictest14532-21sh20:35:022
3078399170,2cyclictest3707-21master19:53:282
3078399170,2cyclictest21595-21cut22:40:192
3078399170,2cyclictest1781-21ps20:10:212
3078399170,2cyclictest15650-21latency22:30:172
3078399170,2cyclictest15650-21latency22:30:172
3078399170,1cyclictest0-21swapper/200:25:152
3078399170,16cyclictest4591-21ls00:05:202
3078399170,16cyclictest30512-21chrt22:56:272
3078399170,16cyclictest30283-21threads21:00:232
3078399170,16cyclictest28471-21proc_pri20:00:222
3078399170,16cyclictest26153-21chrt21:50:212
3078399170,16cyclictest23993-21sort22:45:172
3078399170,16cyclictest23051-21/usr/sbin/munin20:50:142
3078399170,16cyclictest22597-21tune2fs21:45:152
3078399170,16cyclictest13897-21munin-run20:35:002
3078399170,16cyclictest0-21swapper/219:30:172
3078399170,16cyclictest0-21swapper/200:15:212
3078399170,15cyclictest20383-21cpuspeed_turbos00:35:142
30778991715,1cyclictest92332sleep100:15:071
30778991715,1cyclictest21-21ksoftirqd/123:35:021
30778991715,1cyclictest0-21swapper/120:50:151
30778991714,2cyclictest9195-21/usr/sbin/munin22:20:211
30778991714,2cyclictest455-21plymouthd23:12:331
30778991714,2cyclictest399-20systemd-journal20:04:551
30778991714,2cyclictest3985-21H222:10:211
30778991714,2cyclictest25993-21ntpq23:45:181
30778991714,2cyclictest1829-21systemd-journal22:15:011
30778991714,2cyclictest14394-21cut22:30:011
30778991714,2cyclictest1377-21lxd19:19:571
30778991714,2cyclictest1351-21lxd21:54:501
30778991714,2cyclictest11273-21date20:30:011
3077899171,1cyclictest153502chrt23:29:261
3077899171,15cyclictest0-21swapper/100:21:121
3077899170,2cyclictest441-21cpuspeed_turbos00:00:121
3077899170,2cyclictest28909-21expr22:55:131
3077899170,2cyclictest2872-21systemd-logind20:30:511
3077899170,2cyclictest28383-21munin-plugin-st21:00:011
3077899170,2cyclictest18078-21fschecks_time22:35:141
3077899170,2cyclictest16090-21nfsd400:25:211
3077899170,2cyclictest0-21swapper/120:45:191
3077899170,1cyclictest16500-21cpuspeed_turbos21:35:151
3077899170,16cyclictest9159-21run-parts23:15:191
3077899170,16cyclictest4931-21grep21:15:151
3077899170,16cyclictest4931-21grep21:15:141
3077899170,16cyclictest4861-21sed22:10:171
3077899170,16cyclictest3053-21systemd-logind19:34:521
3077899170,16cyclictest3053-21systemd-logind00:12:511
3077899170,16cyclictest30098-21apache_processe22:00:131
3077899170,16cyclictest28881-21/usr/sbin/munin21:55:231
3077899170,16cyclictest24438-21tr19:55:141
3077899170,16cyclictest21901-21apache_volume21:45:131
3077899170,16cyclictest16035-21cpuspeed_turbos23:30:141
3077899170,16cyclictest1516-21lxd22:44:511
3077899170,16cyclictest14499-21snapd21:20:101
3077899170,16cyclictest1079-21cups-browsed19:10:221
3077899170,15cyclictest0-21swapper/121:05:141
30773991715,1cyclictest140852sleep022:28:060
30773991715,1cyclictest0-21swapper/022:45:140
30773991715,1cyclictest0-21swapper/021:15:150
30773991715,1cyclictest0-21swapper/021:15:140
30773991714,2cyclictest8585-21kernelversion21:20:170
30773991714,2cyclictest8157-21chrt20:21:350
30773991714,2cyclictest3075-21cron22:10:010
30773991714,2cyclictest3075-21cron22:10:000
30773991714,2cyclictest3053-21systemd-logind00:28:510
30773991714,2cyclictest25281-21grep21:50:140
30773991714,2cyclictest24414-21sed23:45:000
30773991714,2cyclictest24411-21expr19:55:140
30773991714,2cyclictest16872-21memory23:30:170
30773991714,2cyclictest1516-21lxd21:46:510
30773991714,2cyclictest1079-21cups-browsed21:30:190
3077399171,15cyclictest3450-21gsd-color21:09:320
3077399170,16cyclictest8776-21munin-run22:20:010
3077399170,16cyclictest6092-21pzem_current19:20:190
3077399170,16cyclictest5973-21cat20:20:000
3077399170,16cyclictest5533-21fschecks_time23:10:150
3077399170,16cyclictest4022-21expr00:05:160
3077399170,16cyclictest3983-21H222:10:210
3077399170,16cyclictest339-21apt-get00:00:110
3077399170,16cyclictest30664-21sshd22:58:280
3077399170,16cyclictest3053-21systemd-logind23:06:510
3077399170,16cyclictest26057-21grep23:45:180
3077399170,16cyclictest1079-21cups-browsed21:55:230
30783991614,1cyclictest452-21cpuspeed_turbos22:05:142
30783991614,1cyclictest452-21cpuspeed_turbos22:05:132
30783991614,1cyclictest25727-21ps19:55:202
30783991614,1cyclictest18381-21/usr/sbin/munin19:45:102
30783991614,1cyclictest0-21swapper/223:15:112
30783991614,1cyclictest0-21swapper/223:05:092
30783991614,1cyclictest0-21swapper/221:10:012
30783991614,1cyclictest0-21swapper/219:35:162
3078399160,2cyclictest5576-21hddtemp_smartct23:10:172
3078399160,1cyclictest0-21swapper/222:20:122
3078399160,1cyclictest0-21swapper/221:20:162
3078399160,15cyclictest399-20systemd-journal22:25:132
3078399160,15cyclictest18445-21latency00:30:162
3078399160,15cyclictest13142-21cpuspeed_turbos23:25:142
3078399160,15cyclictest0-21swapper/223:35:132
3078399160,15cyclictest0-21swapper/222:40:012
3078399160,15cyclictest0-21swapper/221:55:182
3078399160,15cyclictest0-21swapper/221:30:012
3078399160,15cyclictest0-21swapper/220:20:232
3078399160,15cyclictest0-21swapper/219:25:152
30778991614,1cyclictest4582-21apt-get19:20:121
30778991614,1cyclictest0-21swapper/120:20:191
30778991614,1cyclictest0-21swapper/119:50:121
30778991614,1cyclictest0-21swapper/119:45:161
3077899160,1cyclictest0-21swapper/123:20:141
3077899160,15cyclictest453-21cat20:10:151
3077899160,15cyclictest399-20systemd-journal20:05:021
3077899160,15cyclictest31329-21cpuspeed_turbos23:00:131
3077899160,15cyclictest16436-21idleruntime19:40:161
3077899160,15cyclictest15292-21expr20:35:141
3077899160,15cyclictest0-21swapper/122:30:141
3077899160,15cyclictest0-21swapper/122:30:131
3077899160,15cyclictest0-21swapper/121:40:171
3077899160,15cyclictest0-21swapper/121:40:161
3077899160,15cyclictest0-21swapper/120:15:121
3077899160,15cyclictest0-21swapper/119:35:151
3077899160,15cyclictest0-21swapper/119:25:171
30773991614,1cyclictest29745-21dpkg20:05:120
30773991614,1cyclictest28095-21chrt20:59:560
30773991614,1cyclictest0-21swapper/022:10:090
30773991614,1cyclictest0-21swapper/021:00:160
30773991614,1cyclictest0-21swapper/020:05:000
30773991614,1cyclictest0-21swapper/000:35:130
30773991614,1cyclictest0-21swapper/000:20:050
30773991613,2cyclictest14061-21cat20:35:020
30773991613,2cyclictest13942-21/usr/sbin/munin23:25:160
30773991613,2cyclictest12730-21/usr/sbin/munin19:35:190
3077399161,15cyclictest0-21swapper/021:26:280
3077399160,2cyclictest18778-21cnf-update-db23:35:020
3077399160,2cyclictest11697-21munin-run22:25:000
3077399160,1cyclictest0-21swapper/023:55:190
3077399160,1cyclictest0-21swapper/020:50:140
3077399160,15cyclictest532-21cat20:10:160
3077399160,15cyclictest29640-21perf23:55:000
3077399160,15cyclictest1874-21apt-get21:10:090
3077399160,15cyclictest18686-21sort20:40:180
3077399160,15cyclictest1566-21grep19:15:130
3077399160,15cyclictest14476-21dpkg20:35:010
3077399160,15cyclictest0-21swapper/023:15:120
3077399160,15cyclictest0-21swapper/023:00:190
3077399160,15cyclictest0-21swapper/022:35:130
3077399160,15cyclictest0-21swapper/020:45:130
3077399160,15cyclictest0-21swapper/019:50:150
3077399160,15cyclictest0-21swapper/019:45:140
3077399160,15cyclictest0-21swapper/019:25:150
3077399160,15cyclictest0-21swapper/000:20:000
3078399150,1cyclictest0-21swapper/200:00:142
3077399150,1cyclictest0-21swapper/019:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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