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2026-04-07 - 01:43
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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 Mon Apr 06, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9474992220,1cyclictest21-21ksoftirqd/108:45:461
9473992213,5cyclictest0-21swapper/010:55:180
947399214,11cyclictest5378-21python309:55:010
9473992114,4cyclictest0-21swapper/008:25:130
947399210,20cyclictest843-21systemd-network07:28:050
947499200,1cyclictest0-21swapper/109:25:421
9478991916,2cyclictest26898-21processes08:35:192
947899191,17cyclictest16323-21cat11:10:012
9474991917,1cyclictest0-21swapper/111:19:541
947499191,16cyclictest1829-21systemd-journal11:05:011
947499190,1cyclictest0-21swapper/107:30:011
947499190,18cyclictest870-21systemd-logind11:33:511
947499190,15cyclictest0-21swapper/111:21:151
9473991917,1cyclictest0-21swapper/010:50:000
9473991915,1cyclictest0-21swapper/009:15:240
947899181,2cyclictest18320-21nvmesmart_nvme008:20:192
947899181,2cyclictest18320-21nvmesmart_nvme008:20:192
947899180,3cyclictest4017-21grep10:45:212
947899180,3cyclictest1521-21lxd09:54:422
947499182,15cyclictest21-21ksoftirqd/112:15:001
9474991814,3cyclictest0-21swapper/109:44:241
9474991814,2cyclictest1799-21latency_hist12:40:001
9474991814,1cyclictest111rcu_preempt10:07:071
9474991814,1cyclictest111rcu_preempt10:07:071
947499181,16cyclictest2177-21smartctl11:40:171
947499180,2cyclictest5940-21grep08:00:141
947499180,2cyclictest455-21plymouthd09:50:211
947499180,17cyclictest0-21swapper/111:55:221
947499180,15cyclictest0-21swapper/110:17:161
9473991815,2cyclictest25025-21systemctl07:35:210
947399181,2cyclictest10209-21tr09:05:150
947399181,16cyclictest19700-21nfsd409:20:180
947399181,16cyclictest12983-21nvmesmart_nvme010:05:190
947399181,16cyclictest12983-21nvmesmart_nvme010:05:190
9473991811,3cyclictest0-21swapper/008:01:240
947399180,17cyclictest0-21swapper/008:10:500
9478991715,1cyclictest0-21swapper/210:30:212
9478991715,1cyclictest0-21swapper/208:55:142
9478991714,2cyclictest455-21plymouthd09:05:162
9478991714,2cyclictest26376-21expr12:25:142
9478991714,2cyclictest25413-21chrt07:35:272
9478991714,2cyclictest17533-21chrt07:24:302
9478991714,2cyclictest14458-21apache_processe10:10:112
9478991714,2cyclictest13545-21fschecks_count09:10:132
947899171,15cyclictest0-21swapper/209:55:162
947899170,2cyclictest6595-21cpuspeed_turbos11:50:122
947899170,2cyclictest3981-21H222:10:212
947899170,2cyclictest30686-21mailstats07:45:222
947899170,2cyclictest26208-21sort09:35:002
947899170,2cyclictest1520-21cat08:50:132
947899170,2cyclictest13180-21latency_hist11:05:002
947899170,2cyclictest1237-21ntpq09:45:182
947899170,2cyclictest11584-21perf12:00:002
947899170,1cyclictest0-21swapper/207:17:302
947899170,16cyclictest8301-21tr10:55:142
947899170,16cyclictest6033-21grep10:50:152
947899170,16cyclictest4315-21expr11:45:142
947899170,16cyclictest399-20systemd-journal12:39:552
947899170,16cyclictest31280-21cat08:45:142
947899170,16cyclictest30715-21nfsd409:40:152
947899170,16cyclictest286162chrt09:36:292
947899170,16cyclictest25781-21missed_timers11:25:172
947899170,16cyclictest17329-21cpuspeed_turbos10:15:142
947899170,16cyclictest1521-21lxd09:24:422
947899170,16cyclictest14999-21expr12:05:132
947899170,16cyclictest13034-21ps10:05:202
947899170,16cyclictest13034-21ps10:05:202
947899170,16cyclictest12553-21cstates12:00:142
947899170,16cyclictest11177-21ntp_states07:10:182
947899170,15cyclictest3628-21fschecks_time07:55:142
9474991715,1cyclictest30410-21sed10:35:211
9474991715,1cyclictest21-21ksoftirqd/107:20:211
9474991715,1cyclictest0-21swapper/108:55:161
9474991715,1cyclictest0-21swapper/107:40:031
9474991714,2cyclictest5372-21/usr/sbin/munin10:50:121
9474991714,2cyclictest3414-21master10:03:061
9474991714,2cyclictest27117-21nfsd412:25:181
9474991714,2cyclictest22952-21chrt07:34:061
9474991714,2cyclictest21-21ksoftirqd/112:20:451
9474991713,3cyclictest12978-21anvil11:05:451
947499171,1cyclictest21-21ksoftirqd/110:15:011
947499171,15cyclictest21-21ksoftirqd/111:50:001
947499171,15cyclictest21-21ksoftirqd/107:10:111
947499170,2cyclictest26199-21expr10:30:131
947499170,2cyclictest1521-21lxd09:18:421
947499170,1cyclictest0-21swapper/109:35:001
947499170,1cyclictest0-21swapper/108:25:211
947499170,16cyclictest8196-21cat09:00:151
947499170,16cyclictest7331-21cut09:55:171
947499170,16cyclictest27591-21sed09:35:161
947499170,16cyclictest25591-21tr08:35:121
947499170,16cyclictest18437-21pzem_power08:20:201
947499170,16cyclictest18437-21pzem_power08:20:201
947499170,16cyclictest16687-21tr11:10:141
947499170,16cyclictest1525-21lxd11:50:421
947499170,16cyclictest14677-21cat08:15:141
947499170,15cyclictest0-21swapper/110:50:001
9473991714,2cyclictest9440-21kernelversion08:05:170
9473991714,2cyclictest843-21systemd-network08:35:060
9473991714,2cyclictest3117-21cat07:55:130
9473991714,2cyclictest28475-21smtp07:42:340
9473991714,2cyclictest23433-21cron09:30:010
9473991714,2cyclictest20970-21cpuspeed_turbos07:30:130
9473991714,2cyclictest18543-21grep10:15:320
9473991714,1cyclictest0-21swapper/011:11:450
947399171,1cyclictest0-21swapper/012:18:020
947399171,1cyclictest0-21swapper/012:18:020
947399171,15cyclictest0-21swapper/007:15:140
947399170,2cyclictest31924-21cat07:50:010
947399170,2cyclictest31692-21pzem_voltage11:35:190
947399170,2cyclictest22229-21expr11:20:130
947399170,2cyclictest19776-21munin-run08:25:010
947399170,2cyclictest19776-21munin-run08:25:010
947399170,2cyclictest15945-21lxd09:14:420
947399170,2cyclictest12258-21seq12:00:130
947399170,2cyclictest11584-21perf12:00:000
947399170,16cyclictest527-21grep07:50:150
947399170,16cyclictest31912-21apache_accesses10:40:110
947399170,16cyclictest30720-21chrt12:33:180
947399170,16cyclictest24716-21/usr/sbin/munin11:25:120
947399170,16cyclictest20207-21sed11:15:160
947399170,16cyclictest20017-21cat12:15:000
947399170,16cyclictest1920-21sed11:40:150
947399170,16cyclictest16288-21sendmail_mailst12:05:200
947399170,16cyclictest15940-21fschecks_time07:20:140
947399170,16cyclictest10997-21bounce10:03:030
947399170,16cyclictest0-21swapper/010:35:220
947399170,15cyclictest0-21swapper/011:05:210
9478991614,1cyclictest0-21swapper/212:10:172
9478991614,1cyclictest0-21swapper/211:40:132
9478991614,1cyclictest0-21swapper/211:15:132
9478991614,1cyclictest0-21swapper/210:25:182
9478991614,1cyclictest0-21swapper/208:40:172
9478991614,1cyclictest0-21swapper/208:15:182
9478991614,1cyclictest0-21swapper/208:10:142
9478991614,1cyclictest0-21swapper/208:05:142
9478991614,1cyclictest0-21swapper/208:00:122
9478991614,1cyclictest0-21swapper/207:30:132
9478991613,2cyclictest29191-21df10:35:142
9478991613,2cyclictest28924-21expr12:30:122
947899160,1cyclictest29267-21timerwakeupswit11:30:212
947899160,1cyclictest0-21swapper/212:20:142
947899160,1cyclictest0-21swapper/211:20:112
947899160,1cyclictest0-21swapper/210:20:142
947899160,1cyclictest0-21swapper/210:00:142
947899160,1cyclictest0-21swapper/208:30:162
947899160,15cyclictest19931-21/usr/sbin/munin08:25:112
947899160,15cyclictest17987-21/usr/sbin/munin07:25:162
947899160,15cyclictest16648-21expr11:10:142
947899160,15cyclictest0-21swapper/212:15:172
947899160,15cyclictest0-21swapper/212:15:172
947899160,15cyclictest0-21swapper/211:35:162
947899160,15cyclictest0-21swapper/210:40:182
947899160,15cyclictest0-21swapper/209:25:152
947899160,15cyclictest0-21swapper/207:40:162
9474991615,1cyclictest21-21ksoftirqd/109:45:171
9474991614,1cyclictest0-21swapper/112:05:111
9474991614,1cyclictest0-21swapper/110:55:151
9474991614,1cyclictest0-21swapper/110:40:181
9474991614,1cyclictest0-21swapper/107:45:161
9474991613,2cyclictest20613-21expr12:15:141
9474991613,2cyclictest20613-21expr12:15:141
9474991613,2cyclictest12908-21awk12:00:161
947499161,1cyclictest21-21ksoftirqd/107:55:131
947499160,1cyclictest0-21swapper/111:35:121
947499160,1cyclictest0-21swapper/110:23:261
947499160,15cyclictest455-21plymouthd07:35:141
947499160,15cyclictest32294-21dpkg07:50:121
947499160,15cyclictest22737-21grep10:25:131
947499160,15cyclictest22706-21cpu08:30:131
947499160,15cyclictest21-21ksoftirqd/112:30:121
947499160,15cyclictest21-21ksoftirqd/108:50:171
947499160,15cyclictest201rcuc/109:05:191
947499160,15cyclictest0-21swapper/111:25:141
947499160,15cyclictest0-21swapper/109:10:131
947499160,15cyclictest0-21swapper/108:40:151
947499160,15cyclictest0-21swapper/108:05:091
947499160,15cyclictest0-21swapper/107:15:171
9473991614,1cyclictest25574-21dpkg10:30:010
9473991614,1cyclictest14967-21expr10:10:140
9473991614,1cyclictest0-21swapper/012:35:140
9473991614,1cyclictest0-21swapper/011:30:110
9473991614,1cyclictest0-21swapper/010:20:160
9473991614,1cyclictest0-21swapper/009:00:100
9473991614,1cyclictest0-21swapper/008:15:150
9473991613,2cyclictest5629-21grep10:50:140
9473991613,2cyclictest31232-21cpuspeed_turbos08:45:140
9473991613,2cyclictest23254-21df_inode08:30:140
9473991613,2cyclictest23210-21cpuspeed_turbos12:20:140
9473991613,2cyclictest0-21swapper/012:25:140
947399160,2cyclictest23662-21sed10:25:170
947399160,1cyclictest0-21swapper/011:00:150
947399160,1cyclictest0-21swapper/009:25:170
947399160,15cyclictest3835-21cpuspeed_turbos11:45:130
947399160,15cyclictest32312-21cpuspeed_turbos09:45:130
947399160,15cyclictest30140-21tune2fs09:40:120
947399160,15cyclictest10158-21cat07:10:130
947399160,15cyclictest0-21swapper/011:50:130
947399160,15cyclictest0-21swapper/009:55:020
947399160,15cyclictest0-21swapper/009:35:110
947399160,15cyclictest0-21swapper/008:55:010
947399160,15cyclictest0-21swapper/008:40:120
9474991512,2cyclictest11374-21taskset08:10:101
947399150,1cyclictest0-21swapper/008:55:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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