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2026-01-02 - 10:46
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Fri Jan 02, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31567992323,0cyclictest0-21swapper/222:45:162
31567992321,1cyclictest15946-21cat00:25:012
31567992321,1cyclictest15946-21cat00:25:002
3156599230,5cyclictest0-21swapper/020:20:180
3156799211,13cyclictest0-21swapper/200:38:112
3156699217,13cyclictest0-21swapper/122:07:551
3156799204,15cyclictest28-21ksoftirqd/200:10:012
31567992014,5cyclictest870-21systemd-logind23:53:522
3156799200,1cyclictest0-21swapper/221:05:322
3156799200,17cyclictest3983-21H222:10:212
3156699202,17cyclictest0-21swapper/123:25:301
31566992015,4cyclictest21494-21cut20:45:151
3156699200,17cyclictest0-21swapper/100:35:151
3156599201,18cyclictest3985-21H222:10:210
3156799193,1cyclictest0-21swapper/222:27:482
3156799193,15cyclictest0-21swapper/221:30:132
31567991915,3cyclictest0-21swapper/221:23:452
3156799190,17cyclictest4099-21H222:10:212
3156799190,16cyclictest3989-21H222:10:212
3156799190,16cyclictest3989-21H222:10:212
3156699192,2cyclictest1100-21snmpd19:44:161
3156699192,16cyclictest6691-21grep19:20:181
3156699192,11cyclictest0-21swapper/119:17:371
31566991919,0cyclictest0-21swapper/121:15:151
31566991910,0cyclictest0-21swapper/119:38:061
31565991916,2cyclictest22892-21ntp_kernel_pll_00:35:200
3156599190,16cyclictest3989-21H222:10:210
3156599190,16cyclictest3976-21H222:10:210
3156799182,15cyclictest10372-21ps23:15:202
31567991816,1cyclictest28-21ksoftirqd/222:50:192
31567991816,1cyclictest28-21ksoftirqd/220:46:072
31567991816,1cyclictest0-21swapper/219:20:542
31567991813,2cyclictest4035-21H222:10:212
3156799180,2cyclictest3989-21H222:10:212
3156799180,2cyclictest3979-21H222:10:212
3156799180,17cyclictest9460-21nfsd419:25:172
3156799180,17cyclictest399-20systemd-journal20:55:042
3156799180,17cyclictest3987-21H222:10:212
3156799180,17cyclictest3987-21H222:10:212
3156799180,17cyclictest3976-21H222:10:212
3156799180,16cyclictest3991-21H222:10:212
3156799180,15cyclictest3981-21H222:10:212
3156799180,15cyclictest3976-21H222:10:212
3156699182,15cyclictest29402-21chrt20:01:191
3156699182,15cyclictest21-21ksoftirqd/123:03:421
31566991816,1cyclictest25761-21missed_timers19:55:171
31566991816,1cyclictest21-21ksoftirqd/123:20:111
31566991816,1cyclictest21-21ksoftirqd/121:46:161
31566991816,1cyclictest10981-21expr22:20:131
31566991816,1cyclictest0-21swapper/122:55:231
31566991816,1cyclictest0-21swapper/120:05:151
31566991815,2cyclictest27862-21awk22:50:161
31566991815,2cyclictest23503-21sendmail_mailtr19:50:231
31566991815,2cyclictest13288-21cut00:20:011
31566991814,3cyclictest5649-21expr23:09:001
31566991814,3cyclictest30338-21grep21:00:211
31566991814,3cyclictest25715-21grep22:45:201
31566991814,3cyclictest1394-21gpgv22:05:001
31566991814,2cyclictest3976-21H222:10:211
3156699181,3cyclictest0-21swapper/100:30:491
3156699181,2cyclictest20282-21expr23:35:151
3156699181,1cyclictest0-21swapper/123:49:171
3156699181,16cyclictest8432-21expr00:10:141
3156699180,6cyclictest0-21swapper/123:43:051
3156699180,3cyclictest0-21swapper/123:13:521
3156699180,2cyclictest3976-21H222:10:211
3156599182,15cyclictest3976-21H222:10:210
31565991817,1cyclictest9-21ksoftirqd/020:16:150
31565991816,1cyclictest0-21swapper/019:31:370
31565991814,3cyclictest3979-21H222:10:210
31565991814,3cyclictest1100-21snmpd00:30:140
31565991814,3cyclictest0-21swapper/022:18:010
31565991814,2cyclictest6430-21cpuspeed_turbos23:10:130
3156599181,2cyclictest30386-21cstates20:05:150
3156599180,3cyclictest3992-21H222:10:210
3156599180,2cyclictest3976-21H222:10:210
31567991715,1cyclictest10904-21cpuspeed_turbos19:30:122
31567991715,1cyclictest0-21swapper/220:37:402
31567991715,1cyclictest0-21swapper/219:40:152
31567991714,2cyclictest4420-21timerandwakeup19:15:212
31567991714,2cyclictest4035-21H222:10:212
31567991714,2cyclictest3983-21H222:10:212
31567991714,2cyclictest23995-21cat20:50:132
31567991714,2cyclictest16132-21grep00:25:142
31567991714,2cyclictest11801-21grep22:20:192
31567991714,2cyclictest1156-21latency_hist00:00:012
31567991713,2cyclictest3981-21H222:10:212
3156799171,15cyclictest28-21ksoftirqd/221:05:012
3156799171,15cyclictest207642chrt00:30:452
3156799171,15cyclictest0-21swapper/223:35:512
3156799170,3cyclictest0-21swapper/221:55:132
3156799170,2cyclictest8064-21pzem_voltage20:20:202
3156799170,2cyclictest4035-21H222:10:212
3156799170,2cyclictest3985-21H222:10:212
3156799170,2cyclictest17491-21pzem_current22:30:212
3156799170,2cyclictest1727-21expr00:00:132
3156799170,2cyclictest1691-21dpkg22:05:012
3156799170,16cyclictest8860-21ls00:10:172
3156799170,16cyclictest5765-21/usr/sbin/munin21:15:202
3156799170,16cyclictest3991-21H222:10:212
3156799170,16cyclictest3985-21H222:10:212
3156799170,16cyclictest3983-21H222:10:212
3156799170,16cyclictest3979-21H222:10:212
3156799170,16cyclictest23370-21expr21:45:152
3156799170,16cyclictest1856-21systemd-udevd19:50:512
3156799170,16cyclictest14489-21uname19:35:192
3156799170,16cyclictest13070-21nvmesmart_nvme023:20:192
3156799170,16cyclictest11381-21if_eno100:15:142
3156799170,15cyclictest3987-21H222:10:212
31566991715,1cyclictest0-21swapper/122:40:181
31566991714,2cyclictest9468-21tr20:25:161
31566991714,2cyclictest9468-21tr20:25:161
31566991714,2cyclictest8909-21ls21:20:131
31566991714,2cyclictest3976-21H222:10:211
31566991714,2cyclictest27980-21date21:55:011
31566991714,2cyclictest21384-21grep21:40:191
31566991714,2cyclictest20974-21timerandwakeup19:45:251
31566991714,2cyclictest18547-21expr20:40:131
31566991714,2cyclictest17549-21expr21:35:161
31566991714,2cyclictest15092-21appstreamcli20:35:031
31566991714,2cyclictest14774-21expr21:30:131
31566991714,2cyclictest13087-21cat20:30:211
31566991714,2cyclictest10066-21grep23:15:191
31566991714,1cyclictest0-21swapper/100:25:141
31566991713,1cyclictest0-21swapper/121:25:141
3156699171,15cyclictest3572-21timerwakeupswit00:00:251
3156699170,2cyclictest4194-21sed21:10:191
3156699170,2cyclictest399-20systemd-journal23:30:471
3156699170,2cyclictest3983-21H222:10:211
3156699170,2cyclictest18818-21cpuspeed_turbos22:35:151
3156699170,2cyclictest18818-21cpuspeed_turbos22:35:151
3156699170,2cyclictest15604-21cat22:30:001
3156699170,16cyclictest9203-21awk22:15:201
3156699170,16cyclictest5688-21fschecks_count22:10:151
3156699170,16cyclictest5244-21ps20:15:221
3156699170,16cyclictest30919-21/usr/sbin/munin23:55:191
3156699170,16cyclictest28865-21cut23:50:141
3156699170,16cyclictest28654-21sed21:00:011
3156699170,16cyclictest25241-21sed20:50:221
3156699170,16cyclictest16019-21cpu22:30:151
3156699170,16cyclictest13635-21expr00:20:141
3156699170,16cyclictest13635-21expr00:20:141
3156699170,16cyclictest10774-21cat19:30:011
3156699170,16cyclictest0-21swapper/120:10:411
31565991715,1cyclictest9-21ksoftirqd/023:19:080
31565991715,1cyclictest0-21swapper/021:05:310
31565991714,2cyclictest9882-21grep20:25:180
31565991714,2cyclictest9882-21grep20:25:170
31565991714,2cyclictest843-21systemd-network19:51:470
31565991714,2cyclictest510-21sed19:10:190
31565991714,2cyclictest455-21plymouthd20:50:120
31565991714,2cyclictest3991-21H222:10:210
31565991714,2cyclictest3981-21H222:10:210
31565991714,2cyclictest3981-21H222:10:210
31565991714,2cyclictest3351-21lxd21:10:480
31565991714,2cyclictest31776-21munin-run21:05:020
31565991714,2cyclictest2732-21expr19:15:140
31565991714,2cyclictest21822-21sed20:45:170
31565991714,2cyclictest17683-21cat23:30:130
31565991714,2cyclictest1521-21lxd00:02:340
31565991714,2cyclictest10127-21awk21:20:220
31565991713,3cyclictest1477-21snapd20:32:590
3156599171,15cyclictest20421-21grep19:45:210
3156599170,2cyclictest4035-21H222:10:210
3156599170,2cyclictest3991-21H222:10:210
3156599170,2cyclictest3981-21H222:10:210
3156599170,2cyclictest32724-21grep23:00:130
3156599170,2cyclictest20015-21grep22:35:210
3156599170,2cyclictest20015-21grep22:35:200
3156599170,2cyclictest1085-21gdbus22:40:200
3156599170,1cyclictest0-21swapper/020:43:050
3156599170,16cyclictest6389-21awk21:15:140
3156599170,16cyclictest3991-21H222:10:210
3156599170,16cyclictest3987-21H222:10:210
3156599170,16cyclictest3979-21H222:10:210
3156599170,16cyclictest3976-21H222:10:210
3156599170,16cyclictest29479-21chrt20:02:210
3156599170,16cyclictest26820-21grep23:45:190
3156599170,16cyclictest26616-21tlsmgr22:54:420
3156599170,16cyclictest21451-21ntpq21:40:200
3156599170,16cyclictest1523-21lxd19:40:480
3156599170,16cyclictest1100-21snmpd20:35:230
3156599170,16cyclictest1085-21gdbus22:10:220
3156599170,15cyclictest3987-21H222:10:210
3156599170,15cyclictest0-21swapper/000:21:510
3156599170,15cyclictest0-21swapper/000:21:500
31567991614,1cyclictest0-21swapper/219:45:172
31567991613,2cyclictest3979-21H222:10:212
31567991613,2cyclictest3961-21cpuspeed_turbos20:15:152
3156799160,1cyclictest0-21swapper/222:55:172
3156799160,1cyclictest0-21swapper/222:10:132
3156799160,15cyclictest31016-21cpu22:00:142
31566991614,1cyclictest0-21swapper/121:05:141
3156699160,15cyclictest0-21swapper/119:10:171
31565991614,1cyclictest0-21swapper/022:30:210
31565991614,1cyclictest0-21swapper/021:30:130
31565991614,1cyclictest0-21swapper/019:25:200
31565991613,2cyclictest24485-21ls21:45:230
3156599160,2cyclictest17618-21/usr/sbin/munin00:25:210
3156599160,15cyclictest31743-21cat23:55:170
3156599160,15cyclictest0-21swapper/022:55:180
3156599160,15cyclictest0-21swapper/022:00:140
3156599160,15cyclictest0-21swapper/021:50:130
3156599160,15cyclictest0-21swapper/021:35:150
3156599160,15cyclictest0-21swapper/021:30:010
3156599160,15cyclictest0-21swapper/019:35:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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