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2026-04-19 - 15:19
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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 Sun Apr 19, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2322992323,0cyclictest0-21swapper/208:00:012
232299230,18cyclictest0-21swapper/210:25:192
231399234,18cyclictest0-21swapper/008:45:000
2322992222,0cyclictest0-21swapper/209:00:152
232299220,8cyclictest843-21systemd-network12:30:222
231799220,21cyclictest843-21systemd-network07:31:001
2322992118,2cyclictest16061-21dump-pmu-power08:30:012
2322991917,1cyclictest9612-21timerandwakeup08:15:212
2322991917,1cyclictest9612-21timerandwakeup08:15:202
2322991917,1cyclictest6075-21latency08:10:172
2322991917,1cyclictest0-21swapper/208:20:162
2322991916,2cyclictest0-21swapper/210:50:162
2322991916,1cyclictest0-21swapper/207:15:182
2322991915,3cyclictest0-21swapper/211:01:582
232299191,17cyclictest0-21swapper/208:05:172
232299190,3cyclictest0-21swapper/211:35:192
232299190,18cyclictest0-21swapper/209:35:012
231799193,2cyclictest9453-21perf11:10:011
231799192,1cyclictest0-21swapper/111:32:131
2317991912,3cyclictest0-21swapper/112:06:591
231799190,16cyclictest3983-21H222:10:211
231399193,1cyclictest22186-21timerandwakeup09:35:210
231399192,2cyclictest30807-21grep10:50:130
231399190,2cyclictest3987-21H222:10:210
232299182,15cyclictest20006-21if_enp1s008:35:162
2322991818,0cyclictest20083-21mii-tool10:30:162
2322991816,1cyclictest0-21swapper/211:15:142
2322991816,1cyclictest0-21swapper/209:55:162
2322991816,1cyclictest0-21swapper/208:45:332
2322991816,1cyclictest0-21swapper/207:40:142
2322991815,2cyclictest19399-21latency_hist12:25:002
2322991815,2cyclictest17690-21nfsd408:30:192
2322991814,3cyclictest23128-21basename11:35:012
2322991814,3cyclictest0-21swapper/212:07:012
2322991814,3cyclictest0-21swapper/211:20:162
2322991814,3cyclictest0-21swapper/208:02:162
232299181,16cyclictest0-21swapper/212:02:192
232299180,2cyclictest3991-21H222:10:212
232299180,17cyclictest3720-21tr10:00:152
232299180,17cyclictest15266-21cstates09:25:152
232299180,17cyclictest0-21swapper/207:10:122
232299180,15cyclictest3976-21H222:10:212
231799183,1cyclictest0-21swapper/110:30:251
2317991816,1cyclictest0-21swapper/107:15:141
2317991813,4cyclictest0-21swapper/110:09:031
2317991812,4cyclictest0-21swapper/108:07:281
231799180,3cyclictest14903-21dump-pmu-power11:20:001
231799180,2cyclictest3979-21H222:10:211
231799180,17cyclictest3979-21H222:10:211
231799180,15cyclictest3991-21H222:10:211
231399182,1cyclictest132432chrt10:18:430
231399182,15cyclictest818-21grep09:00:140
231399182,15cyclictest3991-21H222:10:210
231399182,15cyclictest0-21swapper/011:48:570
231399182,15cyclictest0-21swapper/007:17:530
2313991817,0cyclictest0-21swapper/012:03:060
2313991816,1cyclictest0-21swapper/009:59:330
2313991815,2cyclictest23963-21expr11:35:140
231399181,2cyclictest3983-21H222:10:210
2313991810,4cyclictest0-21swapper/008:02:470
231399180,3cyclictest1829-21systemd-journal11:50:170
231399180,17cyclictest3979-21H222:10:210
231399180,17cyclictest1526-21lxd12:32:420
232299172,1cyclictest0-21swapper/211:05:262
2322991715,1cyclictest28-21ksoftirqd/210:58:542
2322991715,1cyclictest0-21swapper/211:50:142
2322991715,1cyclictest0-21swapper/209:40:162
2322991714,2cyclictest6698-21/usr/sbin/munin09:10:142
2322991714,2cyclictest29411-21cstates09:50:132
2322991714,2cyclictest28601-21expr10:45:142
2322991714,2cyclictest2732-21chrt11:55:112
2322991714,2cyclictest27177-21basename09:45:172
2322991714,2cyclictest25298-21apache_processe10:40:112
2322991714,2cyclictest25210-21cpuspeed_turbos12:35:142
2322991714,2cyclictest16811-21apt-key07:35:022
2322991714,2cyclictest16749-21snapd08:52:492
2322991714,2cyclictest14386-21cstates12:15:152
232299171,15cyclictest22119-21apt-key10:35:012
232299170,2cyclictest9872-21expr09:15:142
232299170,2cyclictest32205-21timerwakeupswit08:55:222
232299170,2cyclictest30100-21expr11:45:142
232299170,2cyclictest22406-21expr08:40:122
232299170,2cyclictest15087-21grep10:20:182
232299170,2cyclictest10316-21cstates11:10:142
232299170,16cyclictest8716-21expr10:10:132
232299170,16cyclictest8419-21apache_volume07:20:122
232299170,16cyclictest5982-21grep10:05:152
232299170,16cyclictest3980-21H222:10:212
232299170,16cyclictest26226-21cstates07:50:142
232299170,16cyclictest23682-21cstates07:45:152
232299170,16cyclictest21517-21timerwakeupswit12:25:222
232299170,16cyclictest13858-21sed09:20:192
232299170,16cyclictest13845-21/usr/sbin/munin07:30:112
232299170,16cyclictest11789-21grep07:25:132
232299170,16cyclictest11692-21grep10:15:142
2317991715,1cyclictest195022chrt07:39:301
2317991714,2cyclictest3985-21H222:10:211
2317991714,2cyclictest30105-21nvmesmart_nvme007:55:191
2317991714,2cyclictest24884-21basename10:40:001
2317991714,2cyclictest24644-21awk12:35:001
2317991714,2cyclictest12168-21latency07:25:161
2317991714,2cyclictest1035-21thermald10:25:221
2317991710,3cyclictest0-21swapper/111:27:351
231799170,2cyclictest9592-21grep09:15:141
231799170,2cyclictest3983-21H222:10:211
231799170,2cyclictest16868-21pzem_current11:20:211
231799170,2cyclictest13564-21chrt12:13:211
231799170,2cyclictest1351-21lxd07:20:431
231799170,16cyclictest8741-21kernelversion08:15:161
231799170,16cyclictest8741-21kernelversion08:15:151
231799170,16cyclictest8332-21cpu10:10:131
231799170,16cyclictest5824-21mailstats11:00:201
231799170,16cyclictest4099-21H222:10:211
231799170,16cyclictest399-20systemd-journal09:35:011
231799170,16cyclictest3987-21H222:10:211
231799170,16cyclictest3983-21H222:10:211
231799170,16cyclictest3981-21H222:10:211
231799170,16cyclictest31868-21expr08:00:141
231799170,16cyclictest21435-21timerandwakeup12:25:211
231799170,16cyclictest2007-21systemd-journal08:47:011
231799170,16cyclictest19487-21expr08:35:131
231799170,16cyclictest14392-21smartctl08:25:161
231799170,16cyclictest1359-21fschecks_count09:00:151
231799170,16cyclictest10720-21cut08:20:141
231799170,16cyclictest0-21swapper/111:51:051
2313991715,1cyclictest119952chrt11:13:040
2313991714,2cyclictest5601-21lxd08:36:430
2313991714,2cyclictest4721-21ls11:55:210
2313991714,2cyclictest426-21systemd-udevd08:52:520
2313991714,2cyclictest4035-21H222:10:210
2313991714,2cyclictest13967-21grep10:20:130
2313991714,2cyclictest0-21swapper/010:25:140
2313991714,1cyclictest0-21swapper/007:30:130
231399170,3cyclictest399-20systemd-journal08:29:100
231399170,2cyclictest426-21systemd-udevd07:22:510
231399170,2cyclictest3985-21H222:10:210
231399170,2cyclictest3979-21H222:10:210
231399170,2cyclictest3053-21systemd-logind07:26:520
231399170,2cyclictest2872-21systemd-logind09:22:520
231399170,2cyclictest25063-21apache_volume12:35:140
231399170,2cyclictest22848-21perf07:45:010
231399170,2cyclictest19521-21cat12:25:010
231399170,2cyclictest15569-21cpuspeed_turbos11:20:150
231399170,1cyclictest0-21swapper/009:50:020
231399170,16cyclictest8289-21expr08:15:140
231399170,16cyclictest8289-21expr08:15:140
231399170,16cyclictest8253-21nfsd411:05:170
231399170,16cyclictest7909-21munin-run10:10:000
231399170,16cyclictest7113-21expr09:10:130
231399170,16cyclictest455-21plymouthd08:45:190
231399170,16cyclictest4035-21H222:10:210
231399170,16cyclictest3991-21H222:10:210
231399170,16cyclictest3989-21H222:10:210
231399170,16cyclictest3976-21H222:10:210
231399170,16cyclictest3450-21gsd-color07:50:130
231399170,16cyclictest31542-21nfsd408:55:170
231399170,16cyclictest2559-21fschecks_time08:05:170
231399170,16cyclictest18825-21timerandwakeup07:35:230
231399170,16cyclictest16749-21snapd09:32:530
231399170,16cyclictest1522-21lxd08:20:420
2322991614,1cyclictest0-21swapper/209:35:142
2322991613,2cyclictest3744-21/usr/sbin/munin09:05:102
2317991614,1cyclictest29101-21missed_timers10:45:181
2317991614,1cyclictest0-21swapper/109:45:141
2317991614,1cyclictest0-21swapper/109:05:151
2317991614,1cyclictest0-21swapper/107:50:161
2317991614,1cyclictest0-21swapper/107:10:071
231799160,2cyclictest29833-21fschecks_time09:50:151
231799160,2cyclictest24879-21nfsd411:35:191
231799160,2cyclictest20603-21expr09:35:131
231799160,1cyclictest11018-21/usr/sbin/munin10:15:111
231799160,1cyclictest0-21swapper/109:20:131
231799160,15cyclictest843-21systemd-network08:57:291
231799160,15cyclictest650-21nfsd409:55:191
231799160,15cyclictest6299-21nfsd408:10:181
231799160,15cyclictest3979-21H222:10:211
231799160,15cyclictest21-21ksoftirqd/112:37:111
231799160,15cyclictest15587-21fschecks_time09:25:151
231799160,15cyclictest14536-21http_loadtime10:20:151
231799160,15cyclictest0-21swapper/112:20:121
231799160,15cyclictest0-21swapper/109:41:131
231799160,15cyclictest0-21swapper/109:10:121
231799160,15cyclictest0-21swapper/108:52:401
231799160,15cyclictest0-21swapper/107:45:141
2313991614,1cyclictest16712-21cstates08:30:160
2313991614,1cyclictest15079-21expr09:25:140
2313991614,1cyclictest0-21swapper/010:00:090
2313991614,1cyclictest0-21swapper/009:45:230
2313991614,1cyclictest0-21swapper/009:15:130
2313991614,1cyclictest0-21swapper/009:05:170
2313991613,2cyclictest24278-21/usr/sbin/munin09:40:140
2313991613,1cyclictest0-21swapper/010:30:150
231399160,1cyclictest0-21swapper/010:10:140
231399160,15cyclictest3020-21expr07:10:140
231399160,15cyclictest25450-21chrt07:48:500
231399160,15cyclictest22376-21/usr/sbin/munin10:35:120
231399160,15cyclictest0-21swapper/012:15:120
231399160,15cyclictest0-21swapper/008:10:120
231799150,14cyclictest0-21swapper/112:20:011
231799150,14cyclictest0-21swapper/108:30:161
231399150,1cyclictest0-21swapper/012:25:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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