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2026-03-10 - 19:19
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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 Mar 10, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
742199220,18cyclictest0-21swapper/212:05:102
7416992214,7cyclictest843-21systemd-network08:33:171
742199214,11cyclictest3650-21munin-run09:55:012
741299219,11cyclictest0-21swapper/012:34:160
741299210,20cyclictest843-21systemd-network11:03:120
742199203,11cyclictest0-21swapper/212:14:132
742199202,17cyclictest0-21swapper/211:12:162
7416992016,1cyclictest0-21swapper/109:25:181
741699197,11cyclictest0-21swapper/111:54:121
741699197,11cyclictest0-21swapper/111:54:121
741699192,2cyclictest1183-21proc_pri10:45:221
741699192,16cyclictest29390-21chrt09:41:371
7416991914,4cyclictest8951-21munin-plugin-st08:10:011
741699190,3cyclictest0-21swapper/109:12:581
741299192,3cyclictest0-21swapper/008:36:360
7412991914,3cyclictest4813-21cpuspeed_turbos09:00:130
741299190,18cyclictest17825-21cron10:20:010
7421991815,2cyclictest2901-21dump-pmu-power08:00:012
7421991814,3cyclictest27674-21nfsd412:30:172
7421991814,2cyclictest7425-21http_loadtime11:55:132
7421991813,4cyclictest0-21swapper/208:25:162
742199181,2cyclictest4774-21nfsd408:00:182
742199181,1cyclictest0-21swapper/209:40:302
742199180,3cyclictest9892-21postgres09:05:472
742199180,3cyclictest12488-21smtp07:16:462
742199180,3cyclictest0-21swapper/212:25:122
742199180,1cyclictest0-21swapper/209:25:152
742199180,17cyclictest15740-21systemctl07:25:012
742199180,17cyclictest0-21swapper/211:45:182
7416991815,2cyclictest5806-21sed09:00:161
741699180,16cyclictest16374-21cpuspeed_turbos07:25:141
7412991815,2cyclictest17558-21nfsd409:20:190
741299181,16cyclictest5422-21proc_pri11:50:190
741299181,16cyclictest5422-21proc_pri11:50:190
741299180,16cyclictest23627-21latency_hist10:30:010
7421991715,1cyclictest28-21ksoftirqd/207:25:012
7421991714,2cyclictest9522-21nfsd411:00:182
7421991714,2cyclictest666-21munin-plugin-st09:50:012
7421991714,2cyclictest5176-21ls09:00:122
7421991714,2cyclictest28275-21latency07:45:182
7421991714,2cyclictest26121-21pzem_current07:40:192
7421991714,2cyclictest23844-21cpuspeed_turbos10:30:122
7421991714,2cyclictest23844-21cpuspeed_turbos10:30:112
7421991714,2cyclictest20698-21sh08:30:142
7421991714,2cyclictest19692-21expr11:20:152
7421991714,2cyclictest11754-21/usr/sbin/munin11:05:152
742199171,15cyclictest265822chrt09:38:012
742199171,15cyclictest18486-21cpuspeed_turbos10:20:122
742199171,15cyclictest16699-21head10:15:142
742199171,15cyclictest0-21swapper/210:00:122
742199170,3cyclictest0-21swapper/208:05:382
742199170,2cyclictest16616-21chrt11:15:002
742199170,2cyclictest15877-21awk09:20:012
742199170,2cyclictest11977-21needreboot09:10:172
742199170,16cyclictest7070-21processes10:55:212
742199170,16cyclictest6783-21sendmail-msp09:59:592
742199170,16cyclictest4255-21sendmail09:00:012
742199170,16cyclictest29959-21runrttasks11:39:112
742199170,16cyclictest29199-21cpuspeed_turbos12:35:132
742199170,16cyclictest28963-21expr08:45:152
742199170,16cyclictest25851-21latency11:30:162
742199170,16cyclictest24390-21grep08:35:212
742199170,16cyclictest22718-21ls09:30:172
742199170,16cyclictest22319-21ntp_offset12:20:182
742199170,16cyclictest22297-21nfsd410:25:182
742199170,16cyclictest2082-21cron10:49:592
742199170,16cyclictest14815-21postgres10:11:202
742199170,16cyclictest11986-21grep08:15:132
742199170,16cyclictest11491-21switchtime12:00:202
742199170,16cyclictest10885-21sed08:10:212
742199170,16cyclictest1035-21thermald09:20:202
742199170,16cyclictest0-21swapper/210:10:012
7416991715,1cyclictest0-21swapper/110:10:141
7416991714,2cyclictest9677-21dpkg12:00:011
7416991714,2cyclictest8438-21expr09:05:131
7416991714,2cyclictest5349-21kernelversion09:55:161
7416991714,2cyclictest4179-21expr10:50:151
7416991714,2cyclictest3989-21H222:10:211
7416991714,2cyclictest27156-21munin-run11:35:011
7416991714,2cyclictest24748-21cat08:35:221
7416991714,2cyclictest24412-21idleruntime12:25:141
7416991714,2cyclictest22251-21nfsd412:20:171
7416991714,2cyclictest21292-21munin-run07:35:011
7416991714,2cyclictest15308-21fschecks_time08:20:151
741699170,2cyclictest8344-21grep10:00:181
741699170,2cyclictest31942-21sort07:50:211
741699170,2cyclictest2872-21systemd-logind07:21:521
741699170,2cyclictest26203-21cron10:35:011
741699170,2cyclictest26203-21cron10:35:001
741699170,2cyclictest20675-21grep11:20:191
741699170,2cyclictest1525-21lxd07:48:421
741699170,2cyclictest10085-21cpuspeed_turbos10:05:141
741699170,16cyclictest31919-21ntpq09:45:161
741699170,16cyclictest29647-21ls10:40:131
741699170,16cyclictest28447-21/usr/sbin/munin08:45:221
741699170,16cyclictest2523-21if_lxdbr008:55:171
741699170,16cyclictest22337-21fschecks_count07:35:151
741699170,16cyclictest21811-21cat09:30:131
741699170,16cyclictest1829-21systemd-journal12:39:001
741699170,16cyclictest16785-21cstates09:20:141
741699170,16cyclictest15143-21cut11:10:171
741699170,16cyclictest1485-21snapd11:57:381
741699170,16cyclictest1481-21snapd10:17:171
741699170,16cyclictest10712-21sed11:05:011
741699170,0cyclictest0-21swapper/108:12:171
7412991714,2cyclictest8433-21sh07:10:160
7412991714,2cyclictest32519-21runrttasks09:45:430
7412991714,2cyclictest27840-21seq11:35:140
7412991714,2cyclictest27260-21latency_hist07:45:000
7412991714,2cyclictest23136-21nvmesmart_nvme009:30:180
7412991714,2cyclictest23040-21kernelversion11:25:170
7412991714,2cyclictest1633-21sed07:55:180
7412991714,2cyclictest1522-21lxd08:28:420
741299171,15cyclictest30081-21https09:45:010
741299171,15cyclictest168572sleep008:23:430
741299170,2cyclictest4034-21seq08:57:220
741299170,2cyclictest29293-21bounce07:45:350
741299170,2cyclictest29040-21cat08:45:160
741299170,2cyclictest28127-21sort10:35:200
741299170,2cyclictest28004-21lxd08:34:420
741299170,16cyclictest8313-21cat09:05:130
741299170,16cyclictest6109-21cut08:05:010
741299170,16cyclictest30868-21expr11:40:130
741299170,16cyclictest28310-21cut08:45:010
741299170,16cyclictest24634-21latency12:25:160
741299170,16cyclictest2164-21nfsd411:45:170
741299170,16cyclictest1085-21gdbus09:25:220
741299170,15cyclictest0-21swapper/007:23:090
7421991614,1cyclictest0-21swapper/211:50:132
7421991614,1cyclictest0-21swapper/211:50:122
7421991614,1cyclictest0-21swapper/211:25:202
7421991614,1cyclictest0-21swapper/210:35:132
7421991614,1cyclictest0-21swapper/207:30:132
7421991613,2cyclictest30559-21grep10:40:172
742199160,2cyclictest14717-21awk08:20:132
742199160,15cyclictest32583-21ntp_states08:50:192
742199160,15cyclictest30966-21expr11:40:132
742199160,15cyclictest0-21swapper/212:15:172
742199160,15cyclictest0-21swapper/210:55:002
742199160,15cyclictest0-21swapper/207:50:132
742199160,15cyclictest0-21swapper/207:35:152
742199160,15cyclictest0-21swapper/207:10:172
7416991614,1cyclictest0-21swapper/111:16:171
7416991614,1cyclictest0-21swapper/109:15:141
7416991614,1cyclictest0-21swapper/108:25:191
7416991614,1cyclictest0-21swapper/108:00:201
7416991613,2cyclictest16645-21uname12:10:171
741699160,2cyclictest18191-21apache_processe12:15:121
741699160,1cyclictest0-21swapper/110:20:171
741699160,1cyclictest0-21swapper/108:50:171
741699160,1cyclictest0-21swapper/108:40:171
741699160,15cyclictest966-21/usr/sbin/munin07:55:131
741699160,15cyclictest7927-21tr07:10:141
741699160,15cyclictest2260-21nfsd411:45:181
741699160,15cyclictest209782chrt10:25:101
741699160,15cyclictest12194-21grep11:05:171
741699160,15cyclictest12114-21expr08:15:131
741699160,15cyclictest10693-21cstates07:15:151
741699160,15cyclictest0-21swapper/112:30:201
741699160,15cyclictest0-21swapper/111:40:131
741699160,15cyclictest0-21swapper/111:35:141
741699160,15cyclictest0-21swapper/111:25:151
741699160,15cyclictest0-21swapper/110:55:191
741699160,15cyclictest0-21swapper/109:50:151
741699160,15cyclictest0-21swapper/109:35:161
7412991614,1cyclictest0-21swapper/012:38:340
7412991614,1cyclictest0-21swapper/012:00:000
7412991614,1cyclictest0-21swapper/011:55:180
7412991614,1cyclictest0-21swapper/011:15:100
7412991614,1cyclictest0-21swapper/010:50:120
7412991614,1cyclictest0-21swapper/010:00:140
7412991614,1cyclictest0-21swapper/009:55:130
7412991614,1cyclictest0-21swapper/009:50:190
7412991613,2cyclictest19410-21apache_accesses11:20:130
7412991613,2cyclictest15972-21cat12:10:130
741299161,1cyclictest9-21ksoftirqd/012:16:230
741299160,2cyclictest6216-21fschecks_time10:55:160
741299160,2cyclictest22918-21nfsd407:35:200
741299160,2cyclictest1481-21snapd10:13:090
741299160,1cyclictest9823-21fschecks_count08:10:150
741299160,1cyclictest16242-21/usr/sbin/munin07:25:120
741299160,1cyclictest0-21swapper/012:20:090
741299160,1cyclictest0-21swapper/012:05:050
741299160,1cyclictest0-21swapper/011:30:200
741299160,1cyclictest0-21swapper/010:20:130
741299160,1cyclictest0-21swapper/009:10:120
741299160,1cyclictest0-21swapper/007:50:160
741299160,15cyclictest0-21swapper/011:10:170
741299160,15cyclictest0-21swapper/011:05:140
741299160,15cyclictest0-21swapper/010:45:180
741299160,15cyclictest0-21swapper/010:40:460
741299160,15cyclictest0-21swapper/010:05:140
741299160,15cyclictest0-21swapper/008:50:150
741299160,15cyclictest0-21swapper/008:05:170
741299160,15cyclictest0-21swapper/007:30:150
742199150,15cyclictest0-21swapper/208:40:082
741699150,1cyclictest0-21swapper/107:40:121
741699150,14cyclictest0-21swapper/112:05:161
7412991514,1cyclictest0-21swapper/010:30:200
7412991514,1cyclictest0-21swapper/010:30:200
7412991514,0cyclictest0-21swapper/009:15:110
741299150,1cyclictest12487-21/usr/sbin/munin08:15:130
741299150,14cyclictest0-21swapper/007:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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