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2026-07-16 - 16:35
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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 Jul 16, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4203992625,1cyclictest0-21swapper/108:00:151
4202992421,2cyclictest17598-21ntp_kernel_pll_12:15:180
420299240,19cyclictest12018-21latency_hist10:15:010
420499230,18cyclictest0-21swapper/212:35:162
4203992311,11cyclictest22458-21find11:30:101
420299230,5cyclictest0-21swapper/010:58:500
4204992214,4cyclictest0-21swapper/211:05:132
4203992213,5cyclictest0-21swapper/112:20:111
420299222,14cyclictest16295-21python311:20:000
420299210,20cyclictest843-21systemd-network10:42:450
420499202,3cyclictest18520-21cron09:30:012
420499200,4cyclictest21545-21latency_hist09:35:002
420399202,3cyclictest30267-21smtpd11:43:111
420399200,20cyclictest0-21swapper/111:24:401
420399200,0cyclictest0-21swapper/109:40:141
4202992018,1cyclictest0-21swapper/007:59:100
4202992018,1cyclictest0-21swapper/007:59:100
4202992017,2cyclictest28991-21if_lxdbr011:40:170
420499192,2cyclictest4099-21H222:10:212
420499192,2cyclictest26421-21nfsd411:35:172
420499192,2cyclictest15803-21fgrep08:25:212
420499192,2cyclictest12551-21timerwakeupswit09:15:222
420499190,16cyclictest3983-21H222:10:212
420499190,16cyclictest3981-21H222:10:212
420499190,16cyclictest3979-21H222:10:212
4203991916,2cyclictest13331-21date09:20:011
420399191,15cyclictest0-21swapper/110:00:141
4202991917,1cyclictest0-21swapper/007:30:170
4202991915,3cyclictest29645-21systemctl12:40:000
420299191,17cyclictest22588-21tr11:30:130
420299190,3cyclictest0-21swapper/010:15:130
420299190,2cyclictest9050-21iwlist11:05:140
420299190,2cyclictest3981-21H222:10:210
420299190,16cyclictest3991-21H222:10:210
420299190,16cyclictest3991-21H222:10:210
420299190,16cyclictest3987-21H222:10:210
420499182,2cyclictest7322-21switchtime08:10:212
4204991816,1cyclictest0-21swapper/211:01:472
4204991816,1cyclictest0-21swapper/210:20:212
4204991815,2cyclictest3987-21H222:10:212
4204991815,2cyclictest0-21swapper/208:35:012
4204991815,1cyclictest0-21swapper/210:56:132
4204991814,3cyclictest3989-21H222:10:212
420499181,16cyclictest1523-21lxd08:54:422
420499180,2cyclictest3989-21H222:10:212
420499180,2cyclictest3985-21H222:10:212
420499180,17cyclictest3991-21H222:10:212
420499180,17cyclictest3991-21H222:10:212
420499180,17cyclictest3989-21H222:10:212
420499180,17cyclictest13957-21cp08:25:012
420499180,17cyclictest13957-21cp08:25:012
4203991816,1cyclictest0-21swapper/109:51:311
4203991816,1cyclictest0-21swapper/108:32:191
4203991815,2cyclictest27972-21cstates09:45:131
4203991815,2cyclictest22339-21sessionclean08:38:591
4203991814,3cyclictest3981-21H222:10:211
4203991814,3cyclictest1100-21snmpd07:26:041
420399181,16cyclictest10403-21latency_hist09:15:001
420399181,16cyclictest10403-21latency_hist09:15:001
420399180,3cyclictest3981-21H222:10:211
420399180,2cyclictest4035-21H222:10:211
420399180,2cyclictest3991-21H222:10:211
420399180,2cyclictest3989-21H222:10:211
420399180,2cyclictest3981-21H222:10:211
420399180,2cyclictest3979-21H222:10:211
420399180,18cyclictest0-21swapper/112:25:011
420399180,18cyclictest0-21swapper/108:27:101
420399180,17cyclictest3983-21H222:10:211
420399180,17cyclictest32013-21needreboot11:45:161
420399180,17cyclictest0-21swapper/110:35:011
420399180,17cyclictest0-21swapper/109:05:111
420399180,16cyclictest3991-21H222:10:211
420299182,15cyclictest0-21swapper/009:05:130
4202991818,0cyclictest0-21swapper/011:20:130
4202991815,1cyclictest0-21swapper/007:17:430
4202991814,3cyclictest20500-21expr08:35:140
4202991814,3cyclictest0-21swapper/010:45:160
4202991814,1cyclictest0-21swapper/009:10:200
4202991814,1cyclictest0-21swapper/009:10:200
4202991813,2cyclictest3981-21H222:10:210
420299181,16cyclictest25082-21cpuspeed_turbos09:40:150
420299181,16cyclictest0-21swapper/011:13:260
420299180,2cyclictest3981-21H222:10:210
420299180,2cyclictest15632-21chrt09:22:430
420299180,17cyclictest3987-21H222:10:210
420299180,17cyclictest20275-21nfsd409:30:180
420299180,16cyclictest4099-21H222:10:210
4204991715,1cyclictest23201-21missed_timers09:35:182
4204991715,1cyclictest23201-21missed_timers09:35:182
4204991715,1cyclictest0-21swapper/209:00:462
4204991714,2cyclictest7032-21/usr/sbin/munin12:00:172
4204991714,2cyclictest4035-21H222:10:212
4204991714,2cyclictest3989-21H222:10:212
4204991714,2cyclictest3983-21H222:10:212
4204991714,2cyclictest3981-21H222:10:212
4204991714,2cyclictest26656-21cpuspeed_turbos07:50:112
4204991714,2cyclictest25014-21df12:30:132
4204991714,2cyclictest17792-21/usr/sbin/munin10:25:192
4204991714,2cyclictest15441-21/usr/sbin/munin07:30:102
4204991713,2cyclictest3987-21H222:10:212
420499171,15cyclictest1193-21/usr/sbin/munin11:50:102
420499170,3cyclictest20968-21nfsd411:25:172
420499170,2cyclictest9720-21cat07:20:002
420499170,2cyclictest558-21smtpd11:48:072
420499170,2cyclictest4099-21H222:10:212
420499170,2cyclictest3979-21H222:10:212
420499170,2cyclictest23939-21ls10:35:142
420499170,2cyclictest14506-21snapd08:45:422
420499170,2cyclictest14506-21snapd08:45:422
420499170,2cyclictest13708-21fschecks_count12:10:162
420499170,2cyclictest12533-21nvmesmart_nvme011:10:202
420499170,1cyclictest3981-21H222:10:212
420499170,1cyclictest0-21swapper/210:30:172
420499170,1cyclictest0-21swapper/208:05:472
420499170,16cyclictest3991-21H222:10:212
420499170,16cyclictest3983-21H222:10:212
420499170,16cyclictest29278-21mailstats09:45:212
420499170,16cyclictest25516-21apt-config08:45:002
420499170,16cyclictest2007-21systemd-journal10:50:362
420499170,16cyclictest18839-21fschecks_time07:35:142
420499170,16cyclictest17394-21needreboot12:15:162
420499170,16cyclictest12364-21cpuspeed_turbos10:15:132
420499170,16cyclictest10163-21fschecks_count10:10:152
4203991715,1cyclictest9905-21ls07:20:001
4203991715,1cyclictest19660-21smartctl09:30:161
4203991714,2cyclictest3991-21H222:10:211
4203991714,2cyclictest3987-21H222:10:211
4203991714,2cyclictest27172-21grep12:35:121
4203991714,2cyclictest22652-21df09:35:141
4203991714,2cyclictest22652-21df09:35:141
4203991714,2cyclictest22546-21/usr/sbin/munin07:40:191
4203991714,2cyclictest2045-21apache_processe09:00:111
4203991714,2cyclictest18402-21postgres12:18:211
4203991714,2cyclictest10931-21ntp_states10:10:191
420399171,1cyclictest11124-21apache_processe11:10:121
420399170,2cyclictest7327-21expr12:00:131
420399170,2cyclictest4099-21H222:10:211
420399170,2cyclictest3991-21H222:10:211
420399170,2cyclictest3987-21H222:10:211
420399170,2cyclictest32591-21expr10:50:131
420399170,2cyclictest30002-21hddtemp_smartct10:45:141
420399170,2cyclictest29530-21fschecks_time08:50:131
420399170,2cyclictest18050-21tr10:25:131
420399170,2cyclictest13174-21sshd08:20:501
420399170,2cyclictest13174-21sshd08:20:491
420399170,2cyclictest11003-21cut12:05:181
420399170,1cyclictest0-21swapper/110:35:101
420399170,16cyclictest8651-21expr11:05:121
420399170,16cyclictest6557-21memory11:00:161
420399170,16cyclictest3991-21H222:10:211
420399170,16cyclictest3989-21H222:10:211
420399170,16cyclictest3981-21H222:10:211
420399170,16cyclictest3707-21master09:22:261
420399170,16cyclictest31387-21chrt07:57:461
420399170,16cyclictest31387-21chrt07:57:461
420399170,16cyclictest26597-21expr08:45:141
420399170,16cyclictest26597-21expr08:45:141
420399170,16cyclictest1617-21cat11:50:121
420399170,16cyclictest1035-21thermald07:30:201
420399170,15cyclictest0-21swapper/112:10:161
420299172,1cyclictest0-21swapper/009:55:130
4202991714,2cyclictest5321-21ntp_states10:00:190
4202991714,2cyclictest4099-21H222:10:210
4202991714,2cyclictest3989-21H222:10:210
4202991714,2cyclictest31532-21sed08:55:010
4202991714,2cyclictest27944-21cpuspeed_turbos09:45:130
4202991714,2cyclictest26614-21runrttasks12:33:290
4202991714,2cyclictest22662-21df_inode09:35:160
4202991714,2cyclictest22662-21df_inode09:35:150
4202991714,2cyclictest17261-21apt-get08:30:010
4202991714,2cyclictest1623-21perf09:00:010
4202991714,2cyclictest10402-21cat07:20:160
420299171,15cyclictest0-21swapper/010:20:130
420299170,2cyclictest8898-21apache208:25:010
420299170,2cyclictest4099-21H222:10:210
420299170,2cyclictest3987-21H222:10:210
420299170,2cyclictest3987-21H222:10:210
420299170,2cyclictest29183-21cat07:55:020
420299170,1cyclictest3981-21H222:10:210
420299170,1cyclictest3979-21H222:10:210
420299170,16cyclictest6656-21needreboot11:00:180
420299170,16cyclictest27898-21ls08:45:220
420299170,16cyclictest27898-21ls08:45:220
420299170,16cyclictest24198-21expr10:35:140
420299170,16cyclictest23051-21nfsd412:25:160
420299170,16cyclictest19209-21ntp_states10:25:190
420299170,16cyclictest16533-21expr09:25:130
420299170,16cyclictest14505-21snapd07:40:280
420299170,16cyclictest14500-21snapd09:52:580
420299170,16cyclictest1377-21lxd07:38:420
420299170,16cyclictest11326-21wc12:05:210
4204991614,1cyclictest8351-21/usr/sbin/munin08:15:132
4204991614,1cyclictest0-21swapper/208:55:122
4204991614,1cyclictest0-21swapper/207:55:192
4204991614,1cyclictest0-21swapper/207:55:182
420499160,15cyclictest21228-21cpuspeed_turbos07:40:142
420499160,15cyclictest13739-21seq09:20:132
420499160,15cyclictest0-21swapper/211:40:142
420499160,15cyclictest0-21swapper/211:20:012
420499160,15cyclictest0-21swapper/207:25:152
4203991614,1cyclictest0-21swapper/107:45:141
4203991613,2cyclictest4099-21H222:10:211
420399160,15cyclictest2446-21apache_volume10:55:111
420399160,15cyclictest2417-21/usr/sbin/munin08:05:131
4202991614,1cyclictest0-21swapper/012:10:000
4202991613,2cyclictest24185-21cat07:45:130
420299160,1cyclictest0-21swapper/007:25:130
420299160,15cyclictest6999-21expr10:05:140
420299160,15cyclictest6382-21http_loadtime08:10:150
420299160,15cyclictest1085-21gdbus09:15:210
420299160,15cyclictest0-21swapper/011:50:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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