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2026-03-12 - 08:00
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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 Thu Mar 12, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25179992423,1cyclictest0-21swapper/219:11:202
25178992414,10cyclictest0-21swapper/100:05:001
2517799230,22cyclictest843-21systemd-network00:33:110
2517799230,19cyclictest23500-21sed22:55:010
2517899220,18cyclictest0-21swapper/122:00:161
2517999212,17cyclictest27194-21ps23:55:182
2517999210,20cyclictest843-21systemd-network22:30:282
2517899212,16cyclictest0-21swapper/100:19:461
2517799215,15cyclictest7867-21date21:30:000
25179992018,1cyclictest0-21swapper/223:47:052
2517899202,3cyclictest0-21swapper/100:39:561
25178992010,3cyclictest0-21swapper/119:45:011
25177992016,3cyclictest9-21ksoftirqd/000:30:000
25177992014,4cyclictest399-20systemd-journal23:00:010
25177992013,6cyclictest870-21systemd-logind22:08:520
25179991914,2cyclictest4099-21H222:10:212
2517899192,16cyclictest0-21swapper/121:45:281
25178991916,2cyclictest26245-21chrt20:06:491
25178991913,3cyclictest0-21swapper/119:16:321
25177991913,5cyclictest399-20systemd-journal23:15:000
25177991913,5cyclictest399-20systemd-journal23:15:000
25179991816,1cyclictest4099-21H222:10:212
25179991816,1cyclictest28-21ksoftirqd/219:25:332
25179991816,1cyclictest0-21swapper/220:00:302
25179991815,2cyclictest8380-21nfsd419:35:162
2517999181,16cyclictest309-21ntp_kernel_pll_21:15:182
2517999180,2cyclictest3983-21H222:10:212
25178991817,1cyclictest0-21swapper/122:40:121
25178991815,2cyclictest3991-21H222:10:211
2517899181,16cyclictest26782-21nfsd419:10:171
2517899180,3cyclictest399-20systemd-journal19:38:311
2517899180,15cyclictest3989-21H222:10:211
25177991816,1cyclictest9-21ksoftirqd/021:11:130
2517799180,3cyclictest455-21plymouthd22:15:160
2517799180,2cyclictest3989-21H222:10:210
2517799180,2cyclictest3981-21H222:10:210
2517799180,17cyclictest3985-21H222:10:210
2517799180,17cyclictest12985-21sessionclean21:38:590
2517999178,6cyclictest26086-21cron23:00:012
2517999172,1cyclictest6144-21if_enp1s021:25:152
25179991715,1cyclictest9998-21nfsd423:25:172
25179991715,1cyclictest0-21swapper/221:00:192
25179991714,3cyclictest0-21swapper/200:05:192
25179991714,2cyclictest6041-21sendmail_mailtr19:30:202
25179991714,2cyclictest4502-21latency_hist21:25:012
25179991714,2cyclictest3976-21H222:10:212
25179991714,2cyclictest3976-21H222:10:212
25179991714,2cyclictest28748-21switchtime20:10:212
25179991714,2cyclictest2872-21systemd-logind19:48:522
25179991714,2cyclictest26949-21latency_hist20:10:012
25179991714,2cyclictest20970-21munin-plugin-st22:50:012
25179991714,2cyclictest18125-21cat23:40:162
25179991714,2cyclictest1483-21snapd22:10:092
25179991714,2cyclictest1478-21snapd21:50:092
25179991714,2cyclictest1478-21snapd21:50:092
25179991714,2cyclictest14238-21expr21:40:152
2517999170,2cyclictest993-21dbus-daemon21:55:012
2517999170,2cyclictest22316-21awk22:50:182
2517999170,2cyclictest2164-21cpuspeed_turbos00:10:122
2517999170,16cyclictest8655-21munin-run20:35:012
2517999170,16cyclictest863-21avahi-daemon00:35:212
2517999170,16cyclictest5601-21lxd22:22:352
2517999170,16cyclictest4099-21H222:10:212
2517999170,16cyclictest3985-21H222:10:212
2517999170,16cyclictest3985-21H222:10:212
2517999170,16cyclictest29806-21nfsd400:00:162
2517999170,16cyclictest27955-21cnf-update-db22:05:022
2517999170,16cyclictest2650-21sed23:15:002
2517999170,16cyclictest2650-21sed23:15:002
2517999170,16cyclictest2254-21if_eno122:15:142
2517999170,16cyclictest18322-21nfsd420:50:182
2517999170,16cyclictest15195-21perf22:40:002
2517999170,16cyclictest1079-21cups-browsed23:00:202
2517999170,16cyclictest10596-21latency_hist21:35:002
2517999170,16cyclictest0-21swapper/220:30:002
25178991715,1cyclictest3062-21/usr/sbin/munin20:25:131
25178991715,1cyclictest0-21swapper/123:10:131
25178991715,1cyclictest0-21swapper/123:10:131
25178991715,1cyclictest0-21swapper/122:45:171
25178991714,2cyclictest8682-21expr00:20:121
25178991714,2cyclictest754-21fschecks_count20:20:151
25178991714,2cyclictest6601-21awk21:25:171
25178991714,2cyclictest4523-21munin-plugin-st21:25:001
25178991714,2cyclictest3707-21master23:56:441
25178991714,2cyclictest3241-21tr23:15:141
25178991714,2cyclictest29679-21apache_volume23:05:111
25178991714,2cyclictest29214-21chrt23:04:371
25178991714,2cyclictest29199-21chrt20:12:421
25178991714,2cyclictest23103-21/usr/sbin/munin23:50:131
25178991714,2cyclictest20738-21mailstats21:50:221
25178991714,2cyclictest20738-21mailstats21:50:221
25178991714,2cyclictest20241-21pzem_power19:55:201
25178991714,2cyclictest14101-21cat21:40:151
25178991714,2cyclictest13565-21ls19:45:151
2517899171,15cyclictest0-21swapper/123:20:121
2517899170,2cyclictest2703-21grep19:25:191
2517899170,2cyclictest16454-21chrt20:46:531
2517899170,2cyclictest1262-21sed00:08:591
2517899170,2cyclictest10702-21sshd20:35:241
2517899170,2cyclictest1004-21cut22:15:001
2517899170,16cyclictest5959-21processes19:30:191
2517899170,16cyclictest3989-21H222:10:211
2517899170,16cyclictest3737-21taskset00:10:201
2517899170,16cyclictest31639-21fschecks_time19:20:131
2517899170,16cyclictest31558-21cpuspeed_turbos21:15:141
2517899170,16cyclictest27395-21python322:05:011
2517899170,16cyclictest25882-21chrt22:57:151
2517899170,16cyclictest23433-21cut21:55:201
2517899170,16cyclictest21384-21expr22:50:141
2517899170,16cyclictest17114-21apache_processe20:50:111
2517899170,16cyclictest12312-21perf22:35:011
2517899170,16cyclictest11322-21cat21:35:121
2517899170,16cyclictest1035-21thermald23:45:221
2517899170,16cyclictest10333-21chrt21:34:591
2517899170,16cyclictest0-21swapper/119:50:421
25177991716,0cyclictest0-21swapper/022:32:550
25177991715,1cyclictest0-21swapper/023:50:130
25177991714,2cyclictest9800-21http19:40:010
25177991714,2cyclictest4099-21H222:10:210
25177991714,2cyclictest3351-21lxd19:52:490
25177991714,2cyclictest31288-21expr22:10:130
25177991714,2cyclictest25312-21sed20:05:170
25177991714,2cyclictest25208-21tr22:00:130
25177991714,2cyclictest1829-21systemd-journal23:47:330
25177991714,2cyclictest16190-21date21:44:590
25177991714,2cyclictest13571-21smtpd23:31:530
25177991713,3cyclictest843-21systemd-network20:21:340
2517799171,15cyclictest27192-21expr23:00:130
2517799170,2cyclictest28004-21lxd22:40:350
2517799170,2cyclictest23206-21fschecks_count21:00:140
2517799170,2cyclictest2007-21systemd-journal20:50:310
2517799170,2cyclictest18430-21nfsd423:40:170
2517799170,2cyclictest17719-21grep21:45:180
2517799170,2cyclictest1490-21snapd21:50:090
2517799170,2cyclictest1490-21snapd21:50:090
2517799170,16cyclictest8844-21/usr/sbin/munin23:25:120
2517799170,16cyclictest7098-21wc00:15:210
2517799170,16cyclictest4099-21H222:10:210
2517799170,16cyclictest3989-21H222:10:210
2517799170,16cyclictest32016-21fschecks_count21:15:150
2517799170,16cyclictest25755-21cstates19:10:130
2517799170,16cyclictest23419-21chrt20:00:320
2517799170,16cyclictest1435-21sshd00:09:200
2517799170,16cyclictest11081-21sessionclean20:39:010
2517799170,16cyclictest0-21swapper/000:35:150
2517799170,15cyclictest3983-21H222:10:210
2517799170,0cyclictest0-21swapper/022:49:400
25179991614,1cyclictest30164-21expr20:15:162
25179991614,1cyclictest0-21swapper/223:35:102
25179991614,1cyclictest0-21swapper/223:30:582
25179991614,1cyclictest0-21swapper/222:40:122
25179991614,1cyclictest0-21swapper/222:25:142
25179991614,1cyclictest0-21swapper/220:55:172
25179991614,1cyclictest0-21swapper/219:50:372
25179991614,1cyclictest0-21swapper/200:20:202
25179991613,2cyclictest4532-21awk23:15:192
25179991613,2cyclictest26977-21taskset22:00:462
25179991613,2cyclictest0-21swapper/200:15:182
2517999160,1cyclictest0-21swapper/221:35:152
2517999160,15cyclictest6143-21grep23:20:122
2517999160,15cyclictest30253-21df23:05:132
2517999160,15cyclictest19633-21kernelversion19:55:162
2517999160,15cyclictest14280-21grep00:30:142
2517999160,15cyclictest11680-21snapd19:20:092
2517999160,15cyclictest0-21swapper/223:50:132
2517999160,15cyclictest0-21swapper/221:45:132
2517999160,15cyclictest0-21swapper/200:25:152
25178991614,1cyclictest0-21swapper/123:37:151
25178991614,1cyclictest0-21swapper/122:35:131
25178991614,1cyclictest0-21swapper/122:25:181
25178991614,1cyclictest0-21swapper/122:20:131
25178991614,1cyclictest0-21swapper/122:15:181
25178991614,1cyclictest0-21swapper/121:10:191
25178991614,1cyclictest0-21swapper/120:30:181
25178991614,1cyclictest0-21swapper/120:00:151
25178991614,1cyclictest0-21swapper/100:30:121
25178991614,1cyclictest0-21swapper/100:25:171
2517899160,2cyclictest3976-21H222:10:211
2517899160,1cyclictest0-21swapper/123:30:131
2517899160,1cyclictest0-21swapper/123:25:161
2517899160,15cyclictest30455-21fschecks_time20:15:171
2517899160,15cyclictest21244-21smartctl20:55:171
25177991614,1cyclictest11637-21/usr/sbin/munin20:40:120
25177991614,1cyclictest0-21swapper/022:25:100
25177991614,1cyclictest0-21swapper/022:20:150
25177991614,1cyclictest0-21swapper/021:20:130
25177991614,1cyclictest0-21swapper/020:55:130
25177991614,1cyclictest0-21swapper/020:10:160
25177991614,1cyclictest0-21swapper/019:25:180
25177991614,1cyclictest0-21swapper/000:20:190
25177991614,1cyclictest0-21swapper/000:10:200
25177991614,1cyclictest0-21swapper/000:00:150
25177991613,2cyclictest14488-21timerandwakeup22:35:210
2517799160,2cyclictest23343-21cat21:55:190
2517799160,1cyclictest4099-21H222:10:210
2517799160,15cyclictest4227-21uname20:25:170
2517799160,15cyclictest3598-21expr23:15:140
2517799160,15cyclictest30482-21fschecks_time20:15:170
2517799160,15cyclictest14639-21ntp_kernel_pll_19:45:190
2517799160,15cyclictest0-21swapper/023:20:120
2517799160,15cyclictest0-21swapper/023:05:120
2517799160,15cyclictest0-21swapper/019:55:130
25177991513,1cyclictest0-21swapper/023:55:100
2517799150,1cyclictest15648-21ntp_states23:35:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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