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2026-07-27 - 15:57
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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 Mon Jul 27, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
724299345,16cyclictest0-21swapper/009:55:540
7251992414,5cyclictest0-21swapper/208:30:142
725199230,5cyclictest0-21swapper/211:44:292
724699230,5cyclictest0-21swapper/111:10:241
724699230,5cyclictest0-21swapper/109:01:371
7246992222,0cyclictest0-21swapper/108:45:211
7246992213,5cyclictest0-21swapper/110:15:181
724299220,18cyclictest0-21swapper/009:20:510
724299220,18cyclictest0-21swapper/009:20:510
725199210,18cyclictest0-21swapper/210:35:012
7246992114,6cyclictest843-21systemd-network11:20:111
7246992113,4cyclictest0-21swapper/111:33:141
725199202,4cyclictest0-21swapper/211:49:572
725199200,4cyclictest0-21swapper/212:18:182
725199200,19cyclictest0-21swapper/209:45:012
725199200,19cyclictest0-21swapper/209:45:012
725199200,17cyclictest0-21swapper/212:06:312
724699202,17cyclictest9769-21grep08:10:161
724699200,19cyclictest843-21systemd-network12:05:271
724299204,12cyclictest0-21swapper/007:10:360
724299204,12cyclictest0-21swapper/007:10:350
7251991917,1cyclictest19396-21expr09:25:142
7251991914,4cyclictest21077-21wc10:25:162
7251991914,3cyclictest18159-21nfsd411:15:202
7251991913,5cyclictest0-21swapper/210:50:202
7251991913,4cyclictest0-21swapper/210:41:492
725199190,2cyclictest3991-21H222:10:212
724699194,14cyclictest0-21swapper/107:49:461
724699193,15cyclictest4117-21sed09:55:011
724699192,3cyclictest0-21swapper/108:15:071
7246991916,2cyclictest22380-21nfsd412:20:181
7246991916,2cyclictest22380-21nfsd412:20:171
7242991913,5cyclictest0-21swapper/008:20:000
725199182,15cyclictest15017-21latency_hist10:15:012
725199182,15cyclictest15017-21latency_hist10:15:012
7251991816,1cyclictest0-21swapper/207:52:312
7251991814,3cyclictest3981-21H222:10:212
725199180,3cyclictest3979-21H222:10:212
725199180,2cyclictest3991-21H222:10:212
725199180,2cyclictest3991-21H222:10:212
7246991816,1cyclictest0-21swapper/109:09:091
7246991814,3cyclictest3989-21H222:10:211
7246991814,3cyclictest3983-21H222:10:211
724699181,3cyclictest0-21swapper/110:09:051
724699181,3cyclictest0-21swapper/107:18:461
7246991813,2cyclictest21432-21grep10:25:161
724699180,3cyclictest0-21swapper/109:45:061
724699180,3cyclictest0-21swapper/109:45:061
724699180,17cyclictest4099-21H222:10:211
724699180,15cyclictest3987-21H222:10:211
724299182,15cyclictest8583-21egrep11:00:120
7242991816,1cyclictest9-21ksoftirqd/007:55:590
7242991816,1cyclictest23218-21nfsd409:30:200
7242991814,3cyclictest4035-21H222:10:210
7242991814,3cyclictest1300-21lxd10:16:430
724299180,17cyclictest3991-21H222:10:210
724299180,15cyclictest3991-21H222:10:210
724299180,15cyclictest0-21swapper/010:58:450
7251991714,2cyclictest8877-21nfsd407:10:182
7251991714,2cyclictest8877-21nfsd407:10:182
7251991714,2cyclictest4035-21H222:10:212
7251991714,2cyclictest3979-21H222:10:212
7251991714,2cyclictest31986-21expr08:50:142
7251991714,2cyclictest26220-21munin-run12:30:002
7251991714,2cyclictest20615-21latency11:20:182
7251991714,2cyclictest1526-21lxd07:48:432
7251991714,2cyclictest10251-21/usr/sbin/munin07:15:172
7251991713,2cyclictest31676-21sessionclean12:39:002
725199171,15cyclictest10397-21idleruntime12:00:142
725199170,2cyclictest3979-21H222:10:212
725199170,2cyclictest10043-21sed09:09:012
725199170,16cyclictest9732-21nfsd411:00:182
725199170,16cyclictest8349-21ntpq10:00:192
725199170,16cyclictest5649-21apt-config10:55:022
725199170,16cyclictest5455-21expr09:00:162
725199170,16cyclictest4941-21idleruntime11:50:182
725199170,16cyclictest4713-21ls09:55:142
725199170,16cyclictest4035-21H222:10:212
725199170,16cyclictest3989-21H222:10:212
725199170,16cyclictest3987-21H222:10:212
725199170,16cyclictest3986-21H222:10:212
725199170,16cyclictest3986-21H222:10:212
725199170,16cyclictest3985-21H222:10:212
725199170,16cyclictest3983-21H222:10:212
725199170,16cyclictest30192-21apt-config09:45:012
725199170,16cyclictest29524-21idleruntime08:45:182
725199170,16cyclictest28004-21lxd11:26:432
725199170,16cyclictest27471-21latency_hist11:35:012
725199170,16cyclictest27349-21http_loadtime12:30:152
725199170,16cyclictest26458-21cpuspeed_turbos10:35:152
725199170,16cyclictest25600-21cron08:40:022
725199170,16cyclictest22329-21cat09:30:162
725199170,16cyclictest19031-21ls07:30:142
725199170,16cyclictest0-21swapper/210:15:182
725199170,16cyclictest0-21swapper/208:15:232
725199170,15cyclictest3989-21H222:10:212
7246991715,1cyclictest18822sleep110:49:531
7246991714,2cyclictest8305-21latency_hist11:00:001
7246991714,2cyclictest7785-21cpuspeed_turbos07:10:141
7246991714,2cyclictest7785-21cpuspeed_turbos07:10:141
7246991714,2cyclictest3979-21H222:10:211
7246991714,2cyclictest26276-21sendmail_mailqu09:35:201
7246991714,2cyclictest1526-21lxd08:52:421
7246991714,2cyclictest14505-21snapd12:12:581
7246991714,2cyclictest11179-21pzem_energy12:00:191
724699170,2cyclictest6776-21/usr/sbin/munin08:05:141
724699170,2cyclictest3985-21H222:10:211
724699170,2cyclictest3981-21H222:10:211
724699170,2cyclictest24320-21munin-run09:35:011
724699170,2cyclictest2186-21missed_timers11:45:181
724699170,2cyclictest17932-21memory11:15:181
724699170,2cyclictest14822-21grep08:20:131
724699170,2cyclictest14500-21snapd11:50:271
724699170,2cyclictest11653-21/usr/sbin/munin09:10:191
724699170,16cyclictest8128-21nfsd411:55:211
724699170,16cyclictest4049-21smartctl10:50:211
724699170,16cyclictest4035-21H222:10:211
724699170,16cyclictest4035-21H222:10:211
724699170,16cyclictest3983-21H222:10:211
724699170,16cyclictest3251-21/usr/sbin/munin08:00:151
724699170,16cyclictest28414-21fschecks_count11:35:151
724699170,16cyclictest26632-21/usr/sbin/munin08:40:151
724699170,16cyclictest26271-21apache_accesses10:35:131
724699170,16cyclictest25077-21/usr/sbin/munin10:30:211
724699170,16cyclictest24410-21cat12:25:141
724699170,16cyclictest23772-21/usr/sbin/munin08:35:151
724699170,16cyclictest22953-21timerandwakeup07:35:231
724699170,16cyclictest22615-21cstates11:25:161
724699170,16cyclictest18086-21pzem_energy09:20:201
724699170,16cyclictest18086-21pzem_energy09:20:191
724699170,16cyclictest17326-21systemctl07:25:211
724699170,16cyclictest14647-21awk09:15:191
724699170,16cyclictest13823-21grep10:10:201
724699170,16cyclictest13823-21grep10:10:191
724699170,16cyclictest0-21swapper/109:55:131
724699170,15cyclictest3979-21H222:10:211
7242991715,1cyclictest113012sleep008:13:590
7242991715,1cyclictest0-21swapper/011:26:010
7242991714,2cyclictest4099-21H222:10:210
7242991714,2cyclictest4099-21H222:10:210
7242991714,2cyclictest3390-21cpuspeed_turbos08:00:130
7242991714,2cyclictest32152-21fschecks_time08:50:150
7242991714,2cyclictest3053-21systemd-logind09:18:510
7242991713,3cyclictest3979-21H222:10:210
724299171,15cyclictest3989-21H222:10:210
724299170,2cyclictest4035-21H222:10:210
724299170,2cyclictest3991-21H222:10:210
724299170,2cyclictest3991-21H222:10:210
724299170,2cyclictest3981-21H222:10:210
724299170,2cyclictest3979-21H222:10:210
724299170,2cyclictest23711-21cpuspeed_turbos10:30:130
724299170,2cyclictest13733-21awk11:10:010
724299170,16cyclictest785-21cat09:50:010
724299170,16cyclictest785-21cat09:50:000
724299170,16cyclictest4035-21H222:10:210
724299170,16cyclictest4035-21H222:10:210
724299170,16cyclictest3991-21H222:10:210
724299170,16cyclictest3991-21H222:10:210
724299170,16cyclictest3983-21H222:10:210
724299170,16cyclictest3981-21H222:10:210
724299170,16cyclictest3707-21master11:23:420
724299170,16cyclictest3386-21awk08:55:190
724299170,16cyclictest32119-21nvmesmart_nvme011:40:200
724299170,16cyclictest29685-21ls10:40:140
724299170,16cyclictest26901-21grep10:35:160
724299170,16cyclictest24152-21cat12:25:130
724299170,16cyclictest23146-21apache_processe08:35:110
724299170,16cyclictest15038-21cat08:20:130
724299170,16cyclictest14506-21snapd10:50:270
724299170,16cyclictest11059-21if_eno107:15:170
724299170,15cyclictest12666-21rm12:05:010
7251991614,1cyclictest0-21swapper/211:10:002
7251991614,1cyclictest0-21swapper/210:05:172
7251991614,1cyclictest0-21swapper/209:50:142
7251991614,1cyclictest0-21swapper/207:35:042
7251991614,1cyclictest0-21swapper/207:20:142
725199160,2cyclictest16037-21cat07:25:142
725199160,1cyclictest0-21swapper/208:55:182
725199160,1cyclictest0-21swapper/207:55:222
725199160,15cyclictest19857-21timerandwakeup10:20:202
725199160,15cyclictest0-21swapper/209:35:162
725199160,15cyclictest0-21swapper/209:10:152
7246991614,1cyclictest0-21swapper/112:30:151
724699160,2cyclictest31176-21expr11:40:151
724699160,15cyclictest293082chrt12:35:021
724699160,15cyclictest27730-21cpuspeed_turbos09:40:131
724699160,15cyclictest19872-21ntpq07:30:201
724699160,15cyclictest19032-21fschecks_count12:15:171
724699160,15cyclictest149982sleep107:20:341
7242991614,1cyclictest21528-21expr12:20:140
7242991614,1cyclictest21528-21expr12:20:140
7242991614,1cyclictest0-21swapper/009:40:150
7242991614,1cyclictest0-21swapper/008:45:150
7242991614,1cyclictest0-21swapper/007:35:160
7242991613,2cyclictest26408-21expr08:40:150
7242991613,2cyclictest1856-21systemd-udevd09:00:520
7242991613,2cyclictest1300-21lxd12:36:430
724299160,2cyclictest14102-21/usr/sbin/munin10:10:220
724299160,2cyclictest14102-21/usr/sbin/munin10:10:210
724299160,1cyclictest0-21swapper/012:30:160
724299160,1cyclictest0-21swapper/011:45:140
724299160,1cyclictest0-21swapper/007:20:110
724299160,15cyclictest7734-21dpkg09:05:140
724299160,15cyclictest4488-21ls11:50:160
724299160,15cyclictest32615-21smartctl10:45:150
724299160,15cyclictest0-21swapper/010:00:150
724299160,15cyclictest0-21swapper/009:35:210
724299160,15cyclictest0-21swapper/007:45:190
724299160,15cyclictest0-21swapper/007:30:150
724299160,15cyclictest0-21swapper/007:25:180
7246991513,1cyclictest0-21swapper/109:28:281
724299150,14cyclictest0-21swapper/009:50:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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