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2026-05-13 - 21:40
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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 Wed May 13, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6166992314,8cyclictest0-21swapper/009:43:560
616699230,5cyclictest0-21swapper/012:01:000
616699230,18cyclictest0-21swapper/011:25:120
616699220,21cyclictest0-21swapper/009:10:040
6168992110,11cyclictest0-21swapper/208:50:152
616899210,20cyclictest843-21systemd-network11:38:412
616899210,16cyclictest3664-21nfsd408:00:192
6167992113,4cyclictest0-21swapper/110:53:091
616699214,2cyclictest17189-21passwd08:25:010
616899204,15cyclictest0-21swapper/208:47:202
616699204,15cyclictest0-21swapper/008:48:470
6166992020,0cyclictest0-21swapper/011:00:150
6166992017,2cyclictest4035-21H222:10:210
616699201,4cyclictest10999-21grep07:15:200
616699201,4cyclictest10999-21grep07:15:190
616699200,18cyclictest6399-21nfsd409:00:180
616699200,0cyclictest0-21swapper/011:50:150
6168991917,1cyclictest0-21swapper/209:20:132
6168991915,3cyclictest0-21swapper/211:25:182
616899191,16cyclictest21207-21grep10:25:132
616799192,16cyclictest9264-21cat08:10:161
6167991914,3cyclictest0-21swapper/110:15:161
616799190,17cyclictest17180-21run-parts08:25:021
616699192,16cyclictest25366-21expr11:30:130
616699192,16cyclictest2034-21chrt10:50:090
616699192,16cyclictest11695-21which11:05:140
6166991918,0cyclictest0-21swapper/012:30:340
6166991917,1cyclictest22689-21cut08:35:000
6166991917,1cyclictest0-21swapper/010:43:070
6166991917,1cyclictest0-21swapper/010:05:110
6166991916,2cyclictest19736-21cat09:25:120
6166991916,2cyclictest12719-21cut12:05:140
6166991915,3cyclictest2146-21nfsd411:45:160
616699191,16cyclictest23479-21nfsd409:30:170
616699191,16cyclictest22877-21python312:25:000
616699190,5cyclictest0-21swapper/008:40:000
616699190,18cyclictest0-21swapper/009:15:170
616699190,16cyclictest3983-21H222:10:210
616899182,1cyclictest16308-21nfsd407:25:192
616899182,15cyclictest268372chrt11:31:262
616899182,15cyclictest0-21swapper/207:16:412
616899182,15cyclictest0-21swapper/207:16:412
6168991816,1cyclictest28-21ksoftirqd/207:37:372
6168991816,1cyclictest255482sleep210:34:482
6168991816,1cyclictest0-21swapper/212:20:002
6168991816,1cyclictest0-21swapper/210:40:002
6168991815,2cyclictest870-21systemd-logind09:15:212
6168991815,2cyclictest7933-21nfsd410:00:182
6168991815,2cyclictest3991-21H222:10:212
6168991815,2cyclictest30991-21sed12:35:212
6168991814,3cyclictest0-21swapper/207:50:142
616899181,2cyclictest9506-21cpuspeed_turbos12:00:122
616899181,2cyclictest12964-21grep10:10:142
616899181,16cyclictest26616-21tlsmgr11:20:202
616899180,17cyclictest19224-21smartctl07:30:192
616899180,17cyclictest14911-21latency_hist12:10:002
616899180,17cyclictest1377-21lxd08:22:422
616899180,16cyclictest3987-21H222:10:212
616799182,15cyclictest993-21dbus-daemon11:50:201
616799182,15cyclictest0-21swapper/109:05:291
6167991815,2cyclictest4035-21H222:10:211
6167991815,2cyclictest31297-21php7.212:38:581
6167991814,3cyclictest24415-21perf11:30:001
6167991813,2cyclictest30142-21nfsd407:50:191
616799180,2cyclictest4099-21H222:10:211
616799180,17cyclictest32651-21awk08:50:181
616699182,2cyclictest7586-21smartctl07:10:160
616699182,15cyclictest6909-21cstates11:55:130
616699182,15cyclictest31821-21cat12:40:000
616699182,15cyclictest30638-21timerandwakeup07:50:230
616699182,15cyclictest0-21swapper/010:45:130
6166991816,1cyclictest31750irq/132-nvme0q110:30:000
6166991815,2cyclictest8555-21cpuspeed_turbos08:10:140
6166991815,1cyclictest0-21swapper/009:54:370
6166991814,2cyclictest19139-21nfsd410:20:170
616699181,2cyclictest30175-21cat11:40:010
616699181,16cyclictest4689-21latency_hist08:05:000
616699181,16cyclictest15530-21ls07:25:130
616699181,16cyclictest12714-21expr07:20:140
616699180,3cyclictest10753-21cron08:19:550
616699180,17cyclictest7713-21python308:10:010
616699180,17cyclictest521-21grep07:55:170
616699180,17cyclictest32246-21ls09:45:210
616699180,17cyclictest28550-21sed10:40:000
616699180,17cyclictest0-21swapper/007:30:150
6168991717,0cyclictest0-21swapper/208:55:162
6168991714,2cyclictest9781-21timerwakeupswit09:05:182
6168991714,2cyclictest7615-21ls07:10:172
6168991714,2cyclictest6493-21latency_hist11:55:002
6168991714,2cyclictest31127-21grep11:40:152
6168991714,2cyclictest30009-21cupsd10:51:252
6168991714,2cyclictest28132-21expr09:40:132
6168991714,2cyclictest20476-21/usr/sbin/munin12:20:172
6168991714,2cyclictest2020-21grep11:45:172
6168991714,2cyclictest11156-21cut11:05:132
6168991714,2cyclictest10566-21munin-run11:05:012
6168991714,1cyclictest0-21swapper/210:40:192
6168991713,3cyclictest5510-21apache_processe10:55:112
616899171,1cyclictest25256-21switchtime12:25:202
616899171,15cyclictest254492chrt07:41:092
616899171,15cyclictest0-21swapper/208:37:522
616899170,2cyclictest3989-21H222:10:212
616899170,2cyclictest26438-21cpuspeed_turbos12:30:112
616899170,2cyclictest1702-21if_eno109:50:142
616899170,1cyclictest4035-21H222:10:212
616899170,16cyclictest30898-21expr09:45:142
616899170,16cyclictest30009-21cupsd09:25:362
616899170,16cyclictest27389-21nfsd407:45:162
616899170,16cyclictest20729-21df08:30:132
616899170,16cyclictest19197-21awk10:20:182
616899170,16cyclictest17679-21cstates08:25:132
616899170,16cyclictest17491-21sshd11:15:152
616899170,16cyclictest13996-21cat08:20:022
616899170,16cyclictest13967-21cpuspeed_turbos11:10:152
616899170,16cyclictest12718-21cstates07:20:152
616899170,16cyclictest12572-21ntpq09:10:192
6167991715,1cyclictest16028-21latency12:10:161
6167991715,1cyclictest0-21swapper/109:35:011
6167991714,2cyclictest4386-21sendmail-msp09:00:011
6167991714,2cyclictest3976-21H222:10:211
6167991714,2cyclictest3976-21H222:10:211
6167991714,2cyclictest26900-21expr12:30:121
6167991714,2cyclictest25932-21munin-run07:45:001
6167991714,2cyclictest21261-21tr07:35:161
6167991714,2cyclictest20057-21fschecks_count09:25:131
6167991714,2cyclictest1967-21sort11:45:171
6167991714,2cyclictest16267-21grep07:25:181
6167991714,2cyclictest13459-21missed_timers07:20:181
6167991714,2cyclictest12408-21netstat09:10:171
6167991713,3cyclictest0-21swapper/110:08:161
616799171,15cyclictest19874-21chrt10:21:421
616799171,15cyclictest16760-21cpuspeed_turbos09:20:131
616799170,2cyclictest4099-21H222:10:211
616799170,2cyclictest3450-21gsd-color08:40:191
616799170,2cyclictest26538-21expr07:45:131
616799170,2cyclictest21413-21kernelversion12:20:161
616799170,2cyclictest21192-21fschecks_count10:25:141
616799170,2cyclictest2007-21systemd-journal08:45:441
616799170,2cyclictest13051-21chrt11:07:001
616799170,1cyclictest3981-21H222:10:211
616799170,1cyclictest0-21swapper/108:02:101
616799170,16cyclictest4761-21python310:55:011
616799170,16cyclictest4099-21H222:10:211
616799170,16cyclictest3991-21H222:10:211
616799170,16cyclictest3976-21H222:10:211
616799170,16cyclictest22114-21chrt08:30:411
616799170,16cyclictest14504-21snapd12:25:531
616799170,16cyclictest12076-21cron12:05:011
616699172,1cyclictest0-21swapper/012:15:120
6166991714,2cyclictest27448-21cat09:40:010
6166991714,2cyclictest25834-21cpuspeed_turbos08:40:130
6166991714,2cyclictest17863-21cstates08:25:140
6166991714,2cyclictest17414-21cat11:15:150
6166991714,2cyclictest15402-21pzem_current11:10:210
616699171,1cyclictest0-21swapper/009:55:140
616699171,15cyclictest23870-21cstates12:25:120
616699170,2cyclictest32081-21switchtime11:40:200
616699170,2cyclictest24297-21/usr/sbin/munin07:40:160
616699170,2cyclictest21503-21cat07:35:190
616699170,16cyclictest8476-21cstates09:05:110
616699170,16cyclictest6728-21apache_volume10:00:110
616699170,16cyclictest5503-21apache_accesses10:55:100
616699170,16cyclictest31360-21cpuspeed_turbos08:50:130
616699170,16cyclictest23267-21find10:30:110
616699170,16cyclictest19943-21df11:20:140
616699170,16cyclictest1682-21chrt08:55:070
616699170,16cyclictest16235-21awk12:10:180
616699170,16cyclictest15502-21expr10:15:130
6168991615,1cyclictest0-21swapper/210:45:172
6168991614,1cyclictest0-21swapper/209:55:132
6168991614,1cyclictest0-21swapper/209:30:142
6168991614,1cyclictest0-21swapper/208:40:132
6168991613,2cyclictest5088-21apt-config09:00:012
616899160,15cyclictest6932-21expr11:55:122
616899160,15cyclictest0-21swapper/210:15:122
616899160,15cyclictest0-21swapper/208:10:012
616899160,15cyclictest0-21swapper/208:05:122
6167991614,2cyclictest3981-21H222:10:211
6167991614,1cyclictest0-21swapper/111:35:201
6167991614,1cyclictest0-21swapper/111:10:161
6167991614,1cyclictest0-21swapper/109:55:181
6167991614,1cyclictest0-21swapper/109:53:351
6167991614,1cyclictest0-21swapper/108:35:111
6167991614,1cyclictest0-21swapper/108:15:431
6167991614,1cyclictest0-21swapper/108:05:151
6167991613,2cyclictest17985-21grep12:15:111
616799160,1cyclictest3985-21H222:10:211
616799160,1cyclictest0-21swapper/110:10:211
616799160,1cyclictest0-21swapper/109:15:181
616799160,1cyclictest0-21swapper/107:30:141
616799160,15cyclictest7814-21head11:55:161
616799160,15cyclictest3991-21H222:10:211
616799160,15cyclictest29286-21pzem_current09:40:201
616799160,15cyclictest0-21swapper/111:40:121
616799160,15cyclictest0-21swapper/110:35:121
616799160,15cyclictest0-21swapper/110:30:201
616799160,15cyclictest0-21swapper/109:00:021
616799160,15cyclictest0-21swapper/108:25:171
616799160,15cyclictest0-21swapper/107:55:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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