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2026-04-23 - 00:40
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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