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2026-04-22 - 23:45
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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 Apr 22, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2851699230,18cyclictest0-21swapper/207:35:162
2851199213,17cyclictest0-21swapper/012:33:050
28516992016,3cyclictest0-21swapper/211:44:572
2851699200,9cyclictest0-21swapper/212:00:182
2851699200,19cyclictest843-21systemd-network09:30:022
2851299200,17cyclictest0-21swapper/108:36:311
28516991916,2cyclictest993-21dbus-daemon08:05:202
28516991915,3cyclictest0-21swapper/209:19:412
2851699190,13cyclictest0-21swapper/210:30:172
2851299190,18cyclictest843-21systemd-network08:59:061
2851199193,15cyclictest0-21swapper/012:05:130
2851199190,2cyclictest3981-21H222:10:210
2851699182,15cyclictest178132chrt11:33:352
28516991815,2cyclictest7745-21cat09:20:212
2851699181,16cyclictest21613-21expr08:50:132
2851699181,16cyclictest10042-21missed_timers12:15:162
2851699181,15cyclictest3985-21H222:10:212
2851699180,3cyclictest2502-21cut09:15:012
2851699180,3cyclictest20789-21smtp08:49:172
2851699180,2cyclictest11079-21apache208:25:002
28512991815,2cyclictest0-21swapper/108:27:351
28512991815,2cyclictest0-21swapper/108:27:341
28512991814,3cyclictest6353-21nfsd407:25:191
28512991814,3cyclictest2007-21systemd-journal10:59:011
28512991814,3cyclictest0-21swapper/111:23:211
2851299180,3cyclictest843-21systemd-network10:35:311
2851299180,3cyclictest2007-21systemd-journal12:02:301
2851299180,2cyclictest3987-21H222:10:211
2851299180,15cyclictest0-21swapper/111:35:131
2851199182,15cyclictest22620-21grep07:55:140
2851199182,15cyclictest0-21swapper/007:50:120
28511991816,1cyclictest0-21swapper/010:20:200
28511991814,1cyclictest0-21swapper/007:30:210
2851699172,1cyclictest28-21ksoftirqd/211:50:012
28516991716,1cyclictest28-21ksoftirqd/208:16:442
28516991715,1cyclictest0-21swapper/212:10:182
28516991715,1cyclictest0-21swapper/211:20:132
28516991715,1cyclictest0-21swapper/210:45:192
28516991715,1cyclictest0-21swapper/209:45:092
28516991714,2cyclictest7475-21apache_accesses08:25:122
28516991714,2cyclictest7475-21apache_accesses08:25:122
28516991714,2cyclictest27330-21sort09:55:222
28516991714,2cyclictest23287-21expr09:50:122
28516991714,2cyclictest17363-21nfsd407:45:192
28516991714,2cyclictest15138-21tune2fs09:35:142
2851699171,15cyclictest28-21ksoftirqd/207:34:052
2851699171,15cyclictest24592-21cpuspeed_turbos10:50:132
2851699171,15cyclictest0-21swapper/211:25:392
2851699170,2cyclictest3989-21H222:10:212
2851699170,2cyclictest30555-21timerandwakeup07:10:222
2851699170,2cyclictest18311-21latency09:40:162
2851699170,2cyclictest1594-21systemd11:58:522
2851699170,2cyclictest1377-21lxd07:58:422
2851699170,2cyclictest13401-21expr08:35:132
2851699170,16cyclictest7162-21cpuspeed_turbos11:15:122
2851699170,16cyclictest4852-21tr10:15:122
2851699170,16cyclictest3991-21H222:10:212
2851699170,16cyclictest3985-21H222:10:212
2851699170,16cyclictest3983-21H222:10:212
2851699170,16cyclictest3979-21H222:10:212
2851699170,16cyclictest28890-21df10:00:152
2851699170,16cyclictest21710-21latency_hist07:55:002
2851699170,16cyclictest14495-21snapd08:42:582
2851699170,16cyclictest13390-21/usr/sbin/munin07:40:182
2851699170,16cyclictest12727-21latency12:20:152
2851699170,16cyclictest0-21swapper/212:05:352
2851699170,16cyclictest0-21swapper/210:09:292
2851699170,15cyclictest3979-21H222:10:212
2851299172,1cyclictest21-21ksoftirqd/112:19:241
28512991714,2cyclictest3985-21H222:10:211
28512991714,2cyclictest3983-21H222:10:211
28512991714,2cyclictest3979-21H222:10:211
28512991714,2cyclictest3697-21expr12:05:131
28512991714,2cyclictest32746-21sed10:05:201
28512991714,2cyclictest32347-21munin-node09:10:121
28512991714,2cyclictest22211-21latency11:40:171
28512991714,2cyclictest21280-21apache_volume08:50:121
28512991714,2cyclictest19862-21cat09:45:001
28512991714,2cyclictest1817-21cpuspeed_turbos10:10:131
28512991714,2cyclictest1817-21cpuspeed_turbos10:10:121
28512991714,2cyclictest13776-21kernelversion10:30:171
28512991714,2cyclictest1245-21tune2fs11:05:141
28512991714,2cyclictest11009-21munin-plugin-st09:30:011
28512991713,3cyclictest24189-21munin-plugin-st10:50:001
28512991713,2cyclictest3985-21H222:10:211
2851299171,15cyclictest0-21swapper/112:20:161
2851299170,2cyclictest673-21awk07:15:201
2851299170,2cyclictest3989-21H222:10:211
2851299170,2cyclictest3989-21H222:10:211
2851299170,2cyclictest25975-21nfsd408:00:181
2851299170,2cyclictest25975-21nfsd408:00:181
2851299170,2cyclictest18462-21apt-get07:50:021
2851299170,2cyclictest10151-21lxd08:20:421
2851299170,1cyclictest3450-21gsd-color10:40:151
2851299170,16cyclictest6335-21ls10:15:201
2851299170,16cyclictest3979-21H222:10:211
2851299170,16cyclictest346-21munin-plugin-st11:05:011
2851299170,16cyclictest31000-21anvil07:13:311
2851299170,16cyclictest30894-21memory11:55:171
2851299170,16cyclictest28637-21sort09:00:211
2851299170,16cyclictest26089-21timerandwakeup10:50:211
2851299170,16cyclictest1523-21lxd08:46:421
2851299170,16cyclictest14957-21cat09:35:141
2851299170,16cyclictest14855-21/usr/sbin/munin12:25:121
2851299170,16cyclictest14643-21awk07:40:161
2851299170,16cyclictest1079-21cups-browsed09:55:201
2851299170,16cyclictest10490-21apache_accesses07:35:101
2851199177,5cyclictest29541-21sed10:59:590
28511991715,1cyclictest9-21ksoftirqd/007:36:500
28511991714,2cyclictest4035-21H222:10:210
28511991714,2cyclictest29409-21chrt11:54:570
28511991714,2cyclictest2007-21systemd-journal09:17:000
28511991714,2cyclictest14586-21sed08:35:210
28511991713,3cyclictest3989-21H222:10:210
2851199171,15cyclictest6669-21cat09:20:150
2851199170,2cyclictest5325-21/usr/sbin/munin08:20:170
2851199170,2cyclictest433-21vmstat08:10:210
2851199170,2cyclictest31783-21sort09:09:000
2851199170,2cyclictest17213-21ntpq08:40:190
2851199170,2cyclictest16676-21tune2fs10:35:140
2851199170,2cyclictest14689-21dpkg12:25:010
2851199170,2cyclictest14495-21snapd07:47:570
2851199170,2cyclictest13370-21sed12:20:190
2851199170,2cyclictest11104-21kernelversion08:30:170
2851199170,1cyclictest3991-21H222:10:210
2851199170,1cyclictest0-21swapper/010:32:560
2851199170,16cyclictest3983-21H222:10:210
2851199170,16cyclictest3954-21VM22:10:210
2851199170,16cyclictest30834-21latency11:55:170
2851199170,16cyclictest26125-21timerandwakeup10:50:210
2851199170,16cyclictest22807-21pzem_voltage11:40:200
2851199170,16cyclictest21536-21cat08:50:130
2851199170,16cyclictest21468-21ntpq09:45:160
2851199170,16cyclictest20711-21timerandwakeup10:40:220
2851199170,16cyclictest18763-21postgres11:35:140
2851199170,16cyclictest14022-21pzem_voltage11:25:190
2851199170,16cyclictest11291-21pzem_power11:20:200
2851199170,16cyclictest0-21swapper/007:27:480
2851199170,15cyclictest3987-21H222:10:210
2851199170,15cyclictest3985-21H222:10:210
28516991614,1cyclictest0-21swapper/211:00:212
28516991614,1cyclictest0-21swapper/208:00:142
28516991614,1cyclictest0-21swapper/208:00:142
2851699160,2cyclictest17571-21apache_processe12:30:112
2851699160,2cyclictest10401-21cstates10:25:142
2851699160,1cyclictest0-21swapper/211:10:142
2851699160,1cyclictest0-21swapper/210:55:162
2851699160,1cyclictest0-21swapper/210:40:132
2851699160,1cyclictest0-21swapper/207:25:152
2851699160,1cyclictest0-21swapper/207:20:182
2851699160,15cyclictest3981-21H222:10:212
2851699160,15cyclictest26749-21apache_processe09:00:122
2851699160,15cyclictest2303-21tune2fs10:10:142
2851699160,15cyclictest2303-21tune2fs10:10:132
2851699160,15cyclictest16638-21fschecks_count10:35:152
2851699160,15cyclictest0-21swapper/212:25:102
2851699160,15cyclictest0-21swapper/211:05:122
2851699160,15cyclictest0-21swapper/210:20:152
2851699160,15cyclictest0-21swapper/209:25:142
28512991614,1cyclictest0-21swapper/112:30:131
28512991614,1cyclictest0-21swapper/111:28:521
28512991614,1cyclictest0-21swapper/110:25:551
28512991614,1cyclictest0-21swapper/109:15:121
28512991614,1cyclictest0-21swapper/109:08:541
28512991614,1cyclictest0-21swapper/107:20:151
2851299160,2cyclictest455-21plymouthd09:20:161
2851299160,1cyclictest3985-21H222:10:211
2851299160,1cyclictest0-21swapper/109:45:091
2851299160,1cyclictest0-21swapper/108:15:141
2851299160,15cyclictest9353-21vmstat10:20:231
2851299160,15cyclictest8546-21pzem_power11:15:211
2851299160,15cyclictest455-21plymouthd09:30:051
2851299160,15cyclictest17741-21timerwakeupswit08:40:221
2851299160,15cyclictest0-21swapper/112:10:181
2851299160,15cyclictest0-21swapper/111:54:221
2851299160,15cyclictest0-21swapper/111:10:131
2851299160,15cyclictest0-21swapper/109:50:131
28511991614,1cyclictest0-21swapper/012:10:120
28511991614,1cyclictest0-21swapper/010:15:160
28511991614,1cyclictest0-21swapper/009:00:220
28511991614,1cyclictest0-21swapper/007:15:130
28511991613,2cyclictest980-21expr11:05:130
28511991613,2cyclictest8682-21nfsd408:25:180
28511991613,2cyclictest8682-21nfsd408:25:180
28511991613,2cyclictest32346-21nfsd410:05:170
28511991613,2cyclictest28612-21expr10:00:130
2851199160,2cyclictest1610-21nfsd412:00:170
2851199160,1cyclictest12059-21http_loadtime09:30:160
2851199160,1cyclictest0-21swapper/011:45:190
2851199160,1cyclictest0-21swapper/010:25:150
2851199160,1cyclictest0-21swapper/009:25:170
2851199160,15cyclictest4626-21/usr/sbin/munin11:10:150
2851199160,15cyclictest2107-21idleruntime08:15:150
2851199160,15cyclictest18698-21nfsd409:40:170
2851199160,15cyclictest0-21swapper/012:15:200
2851199160,15cyclictest0-21swapper/011:15:140
2851199160,15cyclictest0-21swapper/011:00:100
2851199160,15cyclictest0-21swapper/010:45:200
2851199160,15cyclictest0-21swapper/010:10:130
2851199160,15cyclictest0-21swapper/010:10:130
2851199160,15cyclictest0-21swapper/009:35:030
2851199160,15cyclictest0-21swapper/008:00:210
2851199160,15cyclictest0-21swapper/008:00:200
2851199160,15cyclictest0-21swapper/007:40:200
2851199160,15cyclictest0-21swapper/007:10:210
2851299150,1cyclictest0-21swapper/110:00:211
2851199150,15cyclictest0-21swapper/008:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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