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2025-11-24 - 20:56
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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 rackbslot1.osadl.org (updated Mon Nov 24, 2025 12:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35584499912271219,7cyclictest3585147-21apache_processe07:35:010
35580482205177,18sleep30-21swapper/307:07:303
35582322194161,25sleep20-21swapper/207:09:422
35582192189166,13sleep10-21swapper/107:09:331
35581682189161,20sleep00-21swapper/007:08:560
3558452998982,4cyclictest3720050-21snmp_wanswitch.09:45:021
355844999880,85cyclictest3125629-21e21169fc69a4c6711:45:020
355844999880,85cyclictest3125629-21e21169fc69a4c6711:45:020
355845299870,54cyclictest1253-21openvpn11:45:021
355845299870,54cyclictest1253-21openvpn11:45:021
3558449996356,5cyclictest3678401-21/usr/share/muni09:05:170
3558459996155,4cyclictest3730821-21/usr/share/muni09:55:043
3558452995954,4cyclictest3818261-31munin-html11:15:361
3558459995714,41cyclictest3761656-21/usr/share/muni10:25:063
3558457995451,2cyclictest3596004-21snmp_wanpowerct07:45:032
3558452995451,2cyclictest3834072-21kworker/u8:3+flush-179:012:10:101
3558452995449,4cyclictest3766492-21kworker/u8:1+flush-179:011:20:181
3558452995449,3cyclictest3761655-21/usr/share/muni10:25:011
3558449995346,5cyclictest3720063-21snmp_ryswitch.c09:45:020
3558452995249,2cyclictest3671449-21kworker/u8:1+flush-179:009:10:121
3558452995247,4cyclictest3703755-21kworker/u8:4+events_unbound09:30:331
3558452995147,3cyclictest3766492-21kworker/u8:1+flush-179:011:29:071
3558452995147,3cyclictest3766492-21kworker/u8:1+flush-179:010:45:061
3558449995146,4cyclictest3647533-21/usr/share/muni08:35:100
35691712500,2sleep03125721-21chrome07:16:050
3558459994938,10cyclictest3719208-21kworker/u8:0+flush-179:010:55:143
3558459994934,14cyclictest3637498-1kworker/3:1H+kblockd08:38:403
3558457994936,13cyclictest3828964-21kworker/u8:2+flush-179:011:31:152
3558452994946,3cyclictest3636985-21kworker/u8:0+flush-179:008:50:171
3558452994943,4cyclictest3839751-21/usr/share/muni11:40:021
3558452994943,4cyclictest3838827-21munin-limits11:35:361
3558449994944,4cyclictest3621949-21/usr/share/muni08:10:100
3558459994844,3cyclictest3782170-21snmp_wlanswitch10:45:023
3558459994843,4cyclictest3571451-21ntpq07:20:173
3558459994834,2cyclictest3125708-13Chrome_ChildIOT09:27:303
3558457994843,4cyclictest3648839-21ntpq08:35:152
3558457994836,1cyclictest3642118-21kworker/2:2+pm09:08:072
3558457994836,11cyclictest3750962-21kworker/2:0+pm10:16:152
3558452994845,2cyclictest3781608-21kworker/u8:3+flush-179:010:55:151
3558449994844,3cyclictest3719208-21kworker/u8:0+flush-179:011:04:260
3558449994843,4cyclictest3828964-21kworker/u8:2+flush-179:011:30:110
3558457994743,3cyclictest3558595-21/usr/share/muni07:10:182
3558457994742,4cyclictest3688467-21cp09:14:592
3558457994741,5cyclictest3125669-21ThreadPoolSingl08:00:162
3558449994744,2cyclictest3767053-21kworker/u8:2+flush-179:010:40:150
3558449994744,2cyclictest3767053-21kworker/u8:2+flush-179:010:40:140
3558449994741,5cyclictest247560-21ThreadPoolForeg09:40:090
3558449994741,4cyclictest3825661-21apt-get11:25:140
355844999470,46cyclictest3125688-21Chrome_ChildIOT12:10:100
3558459994641,4cyclictest3585134-21/usr/share/muni07:35:093
3558457994643,2cyclictest3571560-21kworker/u8:3+flush-179:007:35:192
3558449994642,3cyclictest3735683-21kworker/u8:2+flush-179:010:10:090
3558449994641,3cyclictest3719208-21kworker/u8:0+flush-179:009:51:110
3558452994541,3cyclictest3854737-21kworker/u8:4+flush-179:012:30:231
3558449994542,3cyclictest3658043-21kworker/u8:4+events_unbound08:55:100
3558449994541,3cyclictest3745939-21kworker/u8:3+flush-179:010:15:300
3558449994540,3cyclictest3781608-21kworker/u8:3+flush-179:010:55:320
3558457994428,15cyclictest3601424-21/usr/share/muni07:50:012
3558457994428,15cyclictest3601424-21/usr/share/muni07:50:012
3558452994441,2cyclictest3766492-21kworker/u8:1+flush-179:011:10:191
3558452994440,3cyclictest3755820-31munin-html10:15:391
3558452994440,3cyclictest3600493-21kworker/u8:3+flush-179:008:26:181
3558459994336,5cyclictest3688869-21/usr/share/muni09:15:023
3558459994329,13cyclictest3637498-1kworker/3:1H+kblockd09:24:373
3558457994339,3cyclictest3719208-21kworker/u8:0+flush-179:010:50:422
3558452994337,5cyclictest3678401-21/usr/share/muni09:05:011
3558449994339,3cyclictest3621705-21latency_hist08:10:010
3558449994338,4cyclictest3719208-21kworker/u8:0+flush-179:010:50:150
3558449994329,12cyclictest1260-21snmpd07:22:570
3558459994233,8cyclictest3600493-21kworker/u8:3+flush-179:008:31:403
3558457994239,2cyclictest3642118-21kworker/2:2+pm09:00:022
3558457994239,2cyclictest3548609-1kworker/2:2H+kblockd08:25:062
3558457994230,12cyclictest3829365-21kworker/2:0+pm11:47:402
3558457994230,12cyclictest3829365-21kworker/2:0+pm11:47:402
3558457994230,11cyclictest3829365-21kworker/2:0+pm11:54:452
3558452994238,2cyclictest3621438-21kworker/u8:5+events_unbound08:20:131
3558452994237,4cyclictest3658043-21kworker/u8:4+flush-179:008:57:251
3558449994234,6cyclictest3125687-21ThreadPoolForeg07:35:010
36527032410,1chrt3652698-21nmap08:40:032
355845999414,36cyclictest0-21swapper/309:40:263
3558459994138,2cyclictest3125629-21e21169fc69a4c6712:03:593
3558457994138,2cyclictest3642118-21kworker/2:2+pm09:45:142
3558457994137,3cyclictest3703755-21kworker/u8:4+flush-179:009:55:112
3558457994128,1cyclictest3750962-21kworker/2:0+pm10:40:002
3558457994118,3cyclictest3125728-13Compositor11:56:342
355845799411,14cyclictest247557-21chrome10:31:032
3558452994126,13cyclictest3828964-21kworker/u8:2+flush-179:011:50:171
3558449994135,4cyclictest3606644-21/usr/share/muni07:55:090
355844999411,39cyclictest3125725-21ThreadPoolForeg10:05:140
36066952400,0chrt3606696-21if_enp3s007:55:053
3558459994032,7cyclictest247562-13Chrome_ChildIOT09:13:293
3558459994027,12cyclictest3125648-13Chrome_IOThread09:06:233
3558457994038,2cyclictest3834072-21kworker/u8:3+flush-179:012:35:002
3558457994037,2cyclictest3829365-21kworker/2:0+pm12:25:162
3558457994037,2cyclictest3724277-21kworker/2:1+pm10:04:532
3558457994037,2cyclictest3642118-21kworker/2:2+pm09:25:092
3558457994036,3cyclictest3824198-21munin-update11:25:342
3558457994035,4cyclictest3606640-21/usr/share/muni07:55:032
355845299407,4cyclictest3125630-13chrome09:53:251
3558452994037,2cyclictest3766492-21kworker/u8:1+events_unbound11:07:511
3558452994036,3cyclictest3595918-21ThreadPoolForeg07:45:111
3558452994036,3cyclictest3580026-21/usr/share/muni07:30:051
3558452994036,3cyclictest247560-21ThreadPoolForeg10:08:191
3558449994037,2cyclictest3658043-21kworker/u8:4+flush-179:008:53:440
3558449994036,3cyclictest3766492-21kworker/u8:1+flush-179:010:45:110
3558449994032,3cyclictest3828964-21kworker/u8:2+flush-179:011:35:160
3558459993936,2cyclictest3210491-1kworker/3:2H+kblockd07:29:313
3558459993935,3cyclictest3724443-31munin-html09:45:393
3558459993934,3cyclictest3708885-31munin-graph09:31:473
3558459993933,5cyclictest3637498-1kworker/3:1H+kblockd10:31:353
3558459993932,5cyclictest3709482-21/usr/share/muni09:35:093
3558459993927,11cyclictest247561-21ThreadPoolForeg10:00:223
3558457993937,1cyclictest3829365-21kworker/2:0+pm11:40:342
3558457993937,1cyclictest3778250-21kworker/2:2+pm11:11:442
3558457993937,1cyclictest3778250-21kworker/2:2+pm10:48:292
3558457993937,1cyclictest3750962-21kworker/2:0+pm10:27:552
3558457993937,1cyclictest3642118-21kworker/2:2+pm09:15:352
3558457993937,1cyclictest3563232-21kworker/2:1+pm07:25:532
3558457993937,1cyclictest3563232-21kworker/2:1+pm07:20:372
3558457993936,2cyclictest3829365-21kworker/2:0+pm12:05:312
3558457993936,2cyclictest3829365-21kworker/2:0+pm12:01:522
3558457993936,2cyclictest3642118-21kworker/2:2+pm09:43:352
3558457993936,2cyclictest3642118-21kworker/2:2+pm08:53:572
3558457993936,2cyclictest3642118-21kworker/2:2+pm08:32:392
3558457993935,3cyclictest3657526-21munin-update08:45:022
3558457993934,4cyclictest3781204-31munin-html10:40:412
3558457993934,4cyclictest3781204-31munin-html10:40:412
3558457993934,4cyclictest3125724-21ThreadPoolForeg11:15:252
3558452993936,2cyclictest3579622-21kworker/u8:0+events_unbound07:35:061
3558452993935,3cyclictest3854737-21kworker/u8:4+flush-179:012:35:241
3558452993935,3cyclictest3854737-21kworker/u8:4+flush-179:012:35:241
3558452993935,3cyclictest3688084-21kworker/u8:2+flush-179:009:15:191
3558452993935,3cyclictest3611087-31munin-html07:55:471
3558452993933,5cyclictest3730810-21/usr/share/muni09:55:001
3558449993936,2cyclictest3834072-21kworker/u8:3+flush-179:011:51:530
3558449993934,3cyclictest3688084-21kworker/u8:2+flush-179:009:33:450
3558459993836,1cyclictest3453745-21kworker/3:1+pm08:19:183
3558459993835,2cyclictest3637498-1kworker/3:1H+kblockd09:53:083
3558459993834,2cyclictest3637498-1kworker/3:1H+kblockd11:45:073
3558459993834,2cyclictest3637498-1kworker/3:1H+kblockd11:45:073
3558459993834,2cyclictest3637498-1kworker/3:1H+kblockd11:35:143
3558459993834,2cyclictest3637498-1kworker/3:1H+kblockd11:09:043
3558459993833,4cyclictest3719208-21kworker/u8:0+flush-179:010:05:303
3558459993831,5cyclictest3125688-21Chrome_ChildIOT07:30:353
3558459993829,8cyclictest1260-21snmpd11:41:393
3558459993827,10cyclictest3637498-1kworker/3:1H+kblockd09:02:543
3558459993826,10cyclictest1260-21snmpd10:53:203
3558457993837,1cyclictest3724277-21kworker/2:1+pm10:09:572
3558457993837,1cyclictest3704170-21kworker/2:0+pm09:32:092
3558457993836,2cyclictest3642118-21kworker/2:2+pm09:22:202
3558457993836,1cyclictest3829365-21kworker/2:0+pm12:13:502
3558457993836,1cyclictest3642118-21kworker/2:2+pm09:37:082
3558457993836,1cyclictest3563232-21kworker/2:1+pm08:15:062
3558457993836,1cyclictest3563232-21kworker/2:1+pm08:10:052
3558457993836,1cyclictest3563232-21kworker/2:1+pm07:42:532
3558457993835,2cyclictest3829365-21kworker/2:0+pm12:15:042
3558457993835,2cyclictest3829365-21kworker/2:0+pm12:15:042
3558457993835,2cyclictest3778250-21kworker/2:2+pm11:05:062
3558457993833,3cyclictest3563410-21kworker/u8:1+flush-179:007:19:592
3558457993812,25cyclictest3125629-21e21169fc69a4c6711:22:062
355845799381,13cyclictest3729937-31munin-graph09:51:002
3558452993837,1cyclictest3745939-21kworker/u8:3+flush-179:010:30:311
3558452993835,2cyclictest3766492-21kworker/u8:1+events_unbound10:42:051
3558452993835,2cyclictest3766492-21kworker/u8:1+events_unbound10:42:051
3558452993834,3cyclictest3854737-21kworker/u8:4+flush-179:012:05:211
3558452993833,4cyclictest3694189-21/usr/share/muni09:20:111
3558452993833,3cyclictest3125688-21Chrome_ChildIOT11:33:301
3558449993835,3cyclictest3834072-21kworker/u8:3+flush-179:011:42:410
3558449993835,1cyclictest3705922-21kworker/0:2+pm09:36:290
3558449993834,3cyclictest3719208-21kworker/u8:0+flush-179:010:29:060
3558449993834,3cyclictest3621438-21kworker/u8:5+events_unbound08:20:230
3558449993833,4cyclictest3834072-21kworker/u8:3+flush-179:012:25:140
3558449993828,8cyclictest3671449-21kworker/u8:1+flush-179:009:01:010
3558459993735,1cyclictest3637498-1kworker/3:1H+kblockd08:44:273
3558459993734,2cyclictest3730513-21kworker/3:0+pm10:18:193
3558459993734,2cyclictest3637498-1kworker/3:1H+kblockd08:48:253
3558459993734,2cyclictest3210491-1kworker/3:2H+kblockd08:14:253
3558459993734,2cyclictest3210491-1kworker/3:2H+kblockd07:12:453
3558459993733,2cyclictest3637498-1kworker/3:1H+kblockd11:10:023
3558459993732,4cyclictest3125629-21e21169fc69a4c6710:23:573
3558459993732,3cyclictest3605620-31munin-html07:50:373
3558459993732,3cyclictest3605620-31munin-html07:50:373
3558459993731,4cyclictest3595834-21/usr/sbin/munin07:45:033
3558457993736,1cyclictest3563232-21kworker/2:1+pm07:30:242
3558457993735,1cyclictest3778250-21kworker/2:2+pm11:00:292
3558457993735,1cyclictest3724277-21kworker/2:1+pm10:10:252
3558457993735,1cyclictest3642118-21kworker/2:2+pm08:55:042
3558457993735,1cyclictest3563232-21kworker/2:1+pm08:05:182
3558457993734,2cyclictest3829365-21kworker/2:0+pm11:35:082
3558457993734,2cyclictest3782113-1kworker/2:1H+kblockd12:35:112
3558457993734,2cyclictest3782113-1kworker/2:1H+kblockd12:35:112
3558457993734,2cyclictest3724896-1kworker/2:0H+kblockd10:21:382
3558452993734,2cyclictest3571560-21kworker/u8:3+flush-179:007:22:301
3558452993734,2cyclictest3350468-1kworker/1:2H+kblockd08:06:021
3558452993733,3cyclictest3590180-21kworker/u8:1+flush-179:007:50:361
3558452993733,3cyclictest3590180-21kworker/u8:1+flush-179:007:50:361
3558452993733,3cyclictest3125726-13Chrome_ChildIOT10:22:411
3558452993729,7cyclictest1260-21snmpd10:00:131
3558449993733,3cyclictest3626777-1kworker/0:1H+kblockd09:10:010
3558449993733,3cyclictest2841347-1kworker/0:0H+kblockd08:04:090
3558459993634,1cyclictest3637498-1kworker/3:1H+kblockd11:27:403
3558459993633,2cyclictest3637498-1kworker/3:1H+kblockd12:35:073
3558459993633,2cyclictest3637498-1kworker/3:1H+kblockd12:35:073
3558459993633,2cyclictest3637498-1kworker/3:1H+kblockd12:10:583
3558459993633,2cyclictest3637498-1kworker/3:1H+kblockd11:58:443
3558459993633,2cyclictest3637498-1kworker/3:1H+kblockd11:20:413
3558459993633,2cyclictest3637498-1kworker/3:1H+kblockd08:51:013
3558459993633,2cyclictest3210491-1kworker/3:2H+kblockd07:17:313
3558459993633,2cyclictest3125627-21ChromeDriver00:55:193
3558459993630,5cyclictest3632245-21/usr/share/muni08:20:013
355845999360,35cyclictest3125726-13Chrome_ChildIOT08:05:073
3558457993635,1cyclictest3829365-21kworker/2:0+pm12:21:312
3558457993634,1cyclictest3778250-21kworker/2:2+pm10:56:072
3558452993633,2cyclictest3828964-21kworker/u8:2+flush-179:012:15:051
3558452993633,2cyclictest3828964-21kworker/u8:2+flush-179:012:15:051
3558452993633,2cyclictest3573155-21kworker/u8:6+flush-179:007:25:091
3558452993632,3cyclictest3719208-21kworker/u8:0+events_unbound10:10:321
3558452993632,3cyclictest3703755-21kworker/u8:4+flush-179:009:37:231
3558449993634,1cyclictest3626777-1kworker/0:1H+kblockd10:36:420
3558449993634,1cyclictest3626777-1kworker/0:1H+kblockd09:15:100
3558449993633,2cyclictest76405-21systemd-journal07:45:200
3558449993633,2cyclictest3735683-21kworker/u8:2+events_unbound10:03:460
3558449993633,2cyclictest3626777-1kworker/0:1H+kblockd12:17:020
3558449993633,2cyclictest3626777-1kworker/0:1H+kblockd12:17:020
3558449993633,1cyclictest3626777-1kworker/0:1H+kblockd12:21:170
3558449993632,3cyclictest3870352-21munin-update12:10:000
3558449993632,3cyclictest3766492-21kworker/u8:1+flush-179:011:21:310
3558449993630,5cyclictest3658043-21kworker/u8:4+flush-179:008:45:310
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd12:21:383
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd12:16:333
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd12:16:333
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd11:30:273
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd11:02:513
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd10:44:543
3558459993532,2cyclictest3637498-1kworker/3:1H+kblockd10:44:543
3558459993523,4cyclictest247562-13Chrome_ChildIOT10:35:373
3558459993523,2cyclictest0-21swapper/312:05:403
3558457993530,4cyclictest3125688-21Chrome_ChildIOT08:21:112
3558452993533,1cyclictest3735905-21kworker/1:1+pm12:03:491
3558452993532,2cyclictest3854737-21kworker/u8:4+flush-179:012:25:381
3558452993532,2cyclictest3350468-1kworker/1:2H+kblockd10:35:041
3558452993532,1cyclictest3350468-1kworker/1:2H+kblockd08:30:341
3558452993531,3cyclictest3647856-21kworker/u8:2+events_unbound08:41:251
3558452993531,3cyclictest3631158-31munin-html08:15:361
3558452993531,3cyclictest3584503-21kworker/u8:2+flush-179:008:00:171
3558452993529,4cyclictest3718712-31munin-html09:40:341
3558452993522,2cyclictest3881035-21snmp_wanpowerct12:20:051
3558449993533,1cyclictest3626777-1kworker/0:1H+kblockd09:56:030
3558449993533,1cyclictest3626777-1kworker/0:1H+kblockd08:34:280
3558449993532,2cyclictest3626777-1kworker/0:1H+kblockd12:31:050
3558449993532,2cyclictest2841347-1kworker/0:0H+kblockd07:13:560
3558449993531,3cyclictest3745939-21kworker/u8:3+flush-179:010:33:080
3558449993531,3cyclictest3688084-21kworker/u8:2+flush-179:009:25:150
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