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2026-07-15 - 16:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Phytec
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackbslot5s.osadl.org (updated Wed Jul 15, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3704652995447,5cyclictest3786180-21kworker/u8:0+events_unbound11:24:160
3704657995228,19cyclictest0-21swapper/110:00:151
370465799511,31cyclictest3809467-21/usr/sbin/munin12:10:151
370465799510,41cyclictest0-21swapper/110:10:131
370465799510,41cyclictest0-21swapper/110:10:131
3704665994740,4cyclictest3750378-21idleruntime-cro09:19:593
3704657994736,7cyclictest3755474-21cron09:35:001
370465799470,38cyclictest0-21swapper/109:50:141
370465799461,39cyclictest3817760-21apt-get12:35:141
370465799461,39cyclictest3817760-21apt-get12:35:141
3704652994640,4cyclictest3796479-21kworker/u8:0+events_unbound11:49:190
3704652994634,9cyclictest3717332-21cron07:45:010
370465799451,41cyclictest3773621-21/usr/sbin/munin10:25:231
370465799451,40cyclictest3715219-21/usr/sbin/munin07:35:281
370465799451,39cyclictest3805620-21/usr/sbin/munin12:00:111
3704657994432,8cyclictest3759020-21apt-config09:45:021
3704657994415,25cyclictest0-21swapper/109:50:021
3704657994328,10cyclictest231ktimers/109:10:121
3704657994328,10cyclictest231ktimers/109:10:111
370465799432,36cyclictest3795290-21/usr/sbin/munin11:30:171
370465799431,39cyclictest3713647-21cron07:32:011
370465799431,37cyclictest53-21kcompactd008:36:481
370465799431,37cyclictest3718768-21cron07:47:001
370465799431,34cyclictest3813427-21/usr/sbin/munin12:20:241
370465799431,24cyclictest3816618-21ntp_states12:30:191
3704662994233,5cyclictest3721180-21fschecks_time07:55:182
3704657994235,4cyclictest3753790-21munin-plugin-st09:30:001
3704657994221,16cyclictest0-21swapper/107:55:001
370465799421,38cyclictest3783225-21apt-get10:55:151
370465799421,38cyclictest3766800-21/usr/sbin/munin10:05:251
370465799421,37cyclictest3706134-21cron07:11:011
370465799421,37cyclictest3706134-21cron07:11:001
370465799421,36cyclictest3771874-21/usr/sbin/munin10:20:211
370465799421,36cyclictest3769909-21/usr/sbin/munin10:15:191
370465799421,36cyclictest3756267-21/usr/sbin/munin09:35:221
370465799421,36cyclictest3733416-21/usr/sbin/munin08:30:121
370465799421,36cyclictest3724704-21/usr/sbin/munin08:05:161
370465799421,36cyclictest3724704-21/usr/sbin/munin08:05:151
3704662994131,6cyclictest0-21swapper/209:05:002
370465799411,37cyclictest3793465-21/usr/sbin/munin11:25:251
370465799411,37cyclictest3739361-21/usr/sbin/munin08:45:271
370465799411,37cyclictest3730052-21/usr/sbin/munin08:20:191
370465799411,37cyclictest3723473-21/usr/sbin/munin08:00:231
370465799411,37cyclictest3716928-21/usr/sbin/munin07:40:251
370465799411,37cyclictest3710113-21/usr/sbin/munin07:20:261
370465799411,35cyclictest3811050-21df_inode12:15:161
370465799411,35cyclictest3788890-21/usr/sbin/munin11:10:211
370465799411,35cyclictest3786767-21/usr/sbin/munin11:05:171
370465799411,35cyclictest3775070-21/usr/sbin/munin10:30:171
370465799411,35cyclictest3748972-21/usr/sbin/munin09:15:141
3704665994030,6cyclictest0-21swapper/308:30:243
3704657994015,21cyclictest0-21swapper/112:10:001
370465799401,36cyclictest3785150-21/usr/sbin/munin11:00:151
370465799401,33cyclictest3779821-21apt-get10:45:141
370465799400,38cyclictest53-21kcompactd011:45:461
370465799400,35cyclictest3798588-21/usr/sbin/munin11:40:121
3704665993928,8cyclictest391ktimers/307:30:133
370465799399,26cyclictest0-21swapper/110:35:271
370465799399,26cyclictest0-21swapper/110:35:271
370465799393,32cyclictest3737759-21grep08:40:251
370465799391,35cyclictest3790768-21/usr/sbin/munin11:15:241
370465799391,35cyclictest3751637-21/usr/sbin/munin09:20:281
370465799391,35cyclictest3729287-21cron08:18:001
370465799391,34cyclictest3732837-21cron08:27:011
370465799391,33cyclictest3804061-21/usr/sbin/munin11:55:171
370465799391,33cyclictest3763081-21/usr/sbin/munin09:55:171
370465799390,37cyclictest53-21kcompactd008:14:251
370465799390,33cyclictest3814359-21apt-get12:25:121
370465799381,35cyclictest53-21kcompactd010:52:481
370465799381,34cyclictest3792362-21/usr/sbin/munin11:20:241
370465799381,34cyclictest3743782-21apt-get09:00:121
370465799381,33cyclictest3778673-21/usr/sbin/munin10:40:221
370465799381,33cyclictest3778673-21/usr/sbin/munin10:40:211
370465799381,32cyclictest3720965-21/usr/sbin/munin07:55:141
3704665993729,4cyclictest0-21swapper/308:23:403
3704665993727,7cyclictest3772335-21grep10:20:263
370465799371,33cyclictest3745490-21apt-get09:05:151
370465799371,33cyclictest3743041-21/usr/sbin/munin08:55:271
370465799371,33cyclictest3740735-21/usr/sbin/munin08:50:221
370465799371,33cyclictest3708608-21cron07:18:011
370465799371,31cyclictest3796857-21runrttasks11:35:031
370465299376,5cyclictest131rcu_preempt08:15:120
370465299371,9cyclictest11-21ksoftirqd/010:35:140
370465299371,9cyclictest11-21ksoftirqd/010:35:130
3704665993629,4cyclictest3741834-21cron08:55:003
3704665993628,4cyclictest0-21swapper/309:45:263
3704662993627,6cyclictest3775701-21grep10:30:242
370465799361,32cyclictest3711111-21/usr/sbin/munin07:25:171
370465799361,30cyclictest3802197-21/usr/sbin/munin11:50:181
3704652993618,6cyclictest3753588-21kworker/u8:1+events_unbound09:33:350
3704652993611,14cyclictest0-21swapper/008:45:160
3704665993529,4cyclictest3798344-21cron11:40:013
3704665993527,4cyclictest3771046-21kthreadd10:20:003
3704662993527,4cyclictest0-21swapper/212:05:012
3704662993526,4cyclictest0-21swapper/208:25:012
3704662993524,8cyclictest311ktimers/210:00:132
3704662993524,7cyclictest0-21swapper/207:55:012
3704652993524,7cyclictest3756735-21grep09:35:260
3704665993426,4cyclictest0-21swapper/309:55:283
3704665993424,7cyclictest3767213-21grep10:05:273
3704665993424,7cyclictest3753345-21grep09:25:263
3704662993427,4cyclictest3764221-21cron10:00:002
3704662993427,4cyclictest311ktimers/207:46:352
3704662993423,6cyclictest0-21swapper/212:20:252
3704662993423,6cyclictest0-21swapper/208:05:292
3704662993423,6cyclictest0-21swapper/208:05:282
370465299346,4cyclictest131rcu_preempt07:20:130
370465299345,4cyclictest131rcu_preempt07:25:110
3704652993427,5cyclictest3784378-21kworker/u8:1+events_unbound11:00:240
3704652993427,4cyclictest3704642-21cyclictest12:15:160
3704652993425,6cyclictest121ktimers/007:15:140
3704665993325,4cyclictest0-21swapper/312:00:013
3704665993325,4cyclictest0-21swapper/308:45:183
370466299338,5cyclictest32-21ksoftirqd/209:40:262
370466299337,5cyclictest32-21ksoftirqd/209:50:002
370466299336,7cyclictest32-21ksoftirqd/211:35:012
3704662993323,6cyclictest3729475-21cut08:20:002
3704652993325,5cyclictest3702565-21kworker/u8:2+events_unbound07:10:190
3704652993325,5cyclictest3702565-21kworker/u8:2+events_unbound07:10:190
3704652993324,6cyclictest3729097-21kworker/u8:2+events_unbound08:20:250
3704652993323,6cyclictest0-21swapper/012:00:260
3704652993318,5cyclictest3717104-21kworker/u8:2+events_unbound07:56:310
3704665993224,4cyclictest0-21swapper/311:10:273
3704665993224,4cyclictest0-21swapper/311:05:013
3704662993224,4cyclictest0-21swapper/211:20:012
3704662993222,6cyclictest0-21swapper/209:35:012
3704652993224,4cyclictest0-21swapper/009:10:010
3704665993122,6cyclictest0-21swapper/312:10:233
370466299317,5cyclictest32-21ksoftirqd/211:20:192
370466299317,21cyclictest311ktimers/209:24:182
370466299316,5cyclictest301rcuc/210:25:272
3704662993121,6cyclictest0-21swapper/212:05:192
3704662993121,6cyclictest0-21swapper/209:10:272
3704662993121,6cyclictest0-21swapper/209:10:272
3704662993120,6cyclictest0-21swapper/208:50:012
3704662993120,6cyclictest0-21swapper/208:35:272
3704662993119,7cyclictest0-21swapper/207:30:282
3704662993113,4cyclictest131rcu_preempt10:55:132
3704652993124,4cyclictest3764678-21grep10:00:160
3704652993123,4cyclictest0-21swapper/009:20:280
3704652993122,6cyclictest3743098-21unixbench_singl08:55:270
3704652993121,4cyclictest3796479-21kworker/u8:0+events_unbound11:54:210
3704652993120,6cyclictest0-21swapper/008:05:300
3704652993120,6cyclictest0-21swapper/008:05:300
3704652993119,7cyclictest3748249-21grep09:10:260
3704652993119,7cyclictest3748249-21grep09:10:260
3704652993116,12cyclictest3704642-21cyclictest12:05:120
3704665993022,4cyclictest0-21swapper/307:15:273
3704665993022,3cyclictest0-21swapper/307:10:253
3704665993022,3cyclictest0-21swapper/307:10:253
3704665993021,6cyclictest0-21swapper/312:15:163
370466299305,5cyclictest32-21ksoftirqd/211:40:172
3704662993023,4cyclictest3757189-21cron09:40:012
3704662993022,4cyclictest0-21swapper/207:28:322
3704662993020,6cyclictest0-21swapper/212:15:262
3704662993019,7cyclictest3753789-21munin-run09:29:592
3704662993019,6cyclictest0-21swapper/207:15:162
3704652993022,4cyclictest0-21swapper/009:48:540
3704665992923,4cyclictest3710502-21cron07:25:013
3704665992922,4cyclictest0-21swapper/312:30:243
3704665992920,7cyclictest3745484-21kworker/u8:0+events_unbound09:13:483
3704665992920,7cyclictest3745484-21kworker/u8:0+events_unbound09:13:473
3704665992918,6cyclictest0-21swapper/310:55:273
370466299299,12cyclictest0-21swapper/211:45:132
370466299297,5cyclictest32-21ksoftirqd/207:42:392
370466299294,5cyclictest32-21ksoftirqd/212:35:002
3704662992923,3cyclictest3789819-21sh11:15:012
3704662992922,4cyclictest0-21swapper/210:35:182
3704662992922,4cyclictest0-21swapper/210:35:172
3704662992919,7cyclictest311ktimers/211:52:062
3704662992919,7cyclictest311ktimers/211:08:002
3704662992919,6cyclictest0-21swapper/207:10:262
3704662992919,6cyclictest0-21swapper/207:10:262
3704662992917,5cyclictest131rcu_preempt10:09:502
3704662992912,9cyclictest131rcu_preempt11:25:092
3704662992910,6cyclictest3781576-21awk10:50:162
3704652992923,4cyclictest3755335-21kworker/u8:0+events_unbound09:41:460
3704652992921,4cyclictest0-21swapper/008:25:170
3704652992920,5cyclictest0-21swapper/009:15:250
3704652992919,6cyclictest0-21swapper/010:05:260
3704652992917,8cyclictest3791056-21grep11:15:250
3704652992917,4cyclictest3729097-21kworker/u8:2+events_unbound08:30:230
370465299291,4cyclictest131rcu_preempt10:20:120
3704665992822,3cyclictest0-21swapper/307:40:263
3704665992820,5cyclictest3768928-21head10:10:253
3704665992820,5cyclictest3768928-21head10:10:253
370466299288,6cyclictest32-21ksoftirqd/208:00:152
370466299287,5cyclictest32-21ksoftirqd/211:05:012
370466299284,7cyclictest32-21ksoftirqd/210:10:142
370466299284,7cyclictest32-21ksoftirqd/210:10:132
370466299283,7cyclictest32-21ksoftirqd/207:25:012
3704662992821,4cyclictest0-21swapper/209:15:262
3704662992818,7cyclictest311ktimers/207:39:082
3704662992817,8cyclictest3771061-21tr10:19:592
3704662992816,4cyclictest131rcu_preempt08:25:392
370465299287,3cyclictest3778646-21ntpq10:40:220
370465299287,3cyclictest3778646-21ntpq10:40:220
3704652992822,4cyclictest3771001-21kworker/u8:1+events_unbound10:29:010
3704652992822,3cyclictest3753787-21latency_hist09:30:000
3704652992821,3cyclictest0-21swapper/012:35:210
3704652992821,3cyclictest0-21swapper/012:35:210
3704652992820,4cyclictest0-21swapper/009:00:250
3704652992819,4cyclictest13550irq/42-30be0000.ethernet12:30:010
3704652992818,6cyclictest0-21swapper/008:35:270
370465299281,4cyclictest11-21ksoftirqd/010:55:140
3704652992813,6cyclictest3806774-21kworker/u8:0+events_unbound12:31:540
370465299280,3cyclictest0-21swapper/011:55:130
3704665992718,6cyclictest391ktimers/308:15:013
3704665992717,7cyclictest3736053-21unixbench_multi08:35:273
3704665992716,8cyclictest3729039-21grep08:15:263
3704665992716,7cyclictest3803243-21grep11:50:243
3704665992713,10cyclictest204-21dbus-daemon09:43:523
370466299278,12cyclictest0-21swapper/208:30:502
370466299277,17cyclictest311ktimers/208:10:432
370466299274,5cyclictest32-21ksoftirqd/210:45:202
3704662992712,4cyclictest131rcu_preempt09:05:182
370466299270,7cyclictest3818729-21cat12:35:272
370466299270,7cyclictest3818729-21cat12:35:272
3704652992720,5cyclictest3766297-21kworker/u8:1+events_unbound10:14:160
3704652992720,5cyclictest3766297-21kworker/u8:1+events_unbound10:14:150
3704652992720,4cyclictest13850irq/36-mmc110:00:010
370465299271,4cyclictest0-21swapper/012:20:130
370465299270,3cyclictest131rcu_preempt07:35:240
3704665992620,3cyclictest0-21swapper/308:00:013
3704665992619,4cyclictest0-21swapper/308:25:253
3704665992618,6cyclictest391ktimers/310:45:133
3704665992616,7cyclictest3726056-21cron08:10:013
3704665992616,7cyclictest3726056-21cron08:10:013
3704665992615,7cyclictest3737438-21seq08:40:243
370466299268,11cyclictest0-21swapper/211:55:122
3704662992620,3cyclictest0-21swapper/209:50:252
3704662992618,5cyclictest0-21swapper/208:45:012
3704662992616,7cyclictest311ktimers/211:39:102
3704662992610,8cyclictest131rcu_preempt10:23:512
3704652992620,4cyclictest3758816-21kworker/u8:2+events_unbound09:50:160
3704652992619,3cyclictest0-21swapper/011:09:100
3704652992618,6cyclictest3722386-21kworker/u8:1+events_unbound08:03:400
3704652992618,5cyclictest0-21swapper/011:35:270
3704665992519,3cyclictest0-21swapper/307:45:163
3704665992518,3cyclictest0-21swapper/311:15:153
3704665992517,4cyclictest3799650-21unixbench_singl11:40:263
3704665992517,4cyclictest0-21swapper/310:40:013
3704665992517,4cyclictest0-21swapper/310:40:003
3704665992517,4cyclictest0-21swapper/309:50:273
3704662992516,6cyclictest311ktimers/212:25:222
370466299250,8cyclictest32-21ksoftirqd/208:55:242
3704652992518,5cyclictest3732845-21kworker/u8:0+events_unbound08:54:050
3704652992517,6cyclictest3718836-21kworker/u8:1+events_unbound07:51:210
3704652992516,5cyclictest0-21swapper/008:40:240
3704652992514,7cyclictest0-21swapper/010:30:190
370465299251,20cyclictest0-21swapper/008:11:200
370465299251,13cyclictest3698168-21kworker/0:0+mm_percpu_wq07:31:540
370465299251,13cyclictest0-21swapper/011:29:320
370465299250,3cyclictest0-21swapper/010:47:020
3704665992419,2cyclictest0-21swapper/312:25:143
3704665992418,3cyclictest0-21swapper/312:35:173
3704665992418,3cyclictest0-21swapper/312:35:173
3704665992418,3cyclictest0-21swapper/310:45:013
3704665992418,3cyclictest0-21swapper/310:45:013
3704665992418,3cyclictest0-21swapper/309:05:303
3704665992417,4cyclictest0-21swapper/311:30:183
3704665992417,3cyclictest0-21swapper/312:05:023
3704665992416,4cyclictest145-21jbd2/mmcblk1p2-810:25:373
370466299243,5cyclictest32-21ksoftirqd/208:50:292
3704662992410,7cyclictest131rcu_preempt12:12:082
370465299241,21cyclictest3800255-21gpgv11:45:000
370465299241,12cyclictest0-21swapper/010:51:120
3704665992317,4cyclictest3746844-21kworker/u8:3-events_unbound09:30:133
3704665992310,9cyclictest204-21dbus-daemon07:28:323
3704652992316,5cyclictest3808736-21kworker/u8:1+events_unbound12:11:480
3704652992315,5cyclictest121ktimers/011:30:180
3704652992311,8cyclictest3789805-21cron11:15:000
370465299230,19cyclictest0-21swapper/007:45:270
3704665992214,5cyclictest391ktimers/310:00:133
3704665992214,4cyclictest53-21kcompactd010:30:243
3704652992216,2cyclictest0-21swapper/010:15:080
3704665992116,2cyclictest0-21swapper/310:50:213
3704665992114,5cyclictest391ktimers/307:54:553
3704665992114,4cyclictest3793465-21/usr/sbin/munin11:25:213
3704665992113,5cyclictest391ktimers/309:35:143
370466599201,4cyclictest0-21swapper/311:05:213
3704665992014,3cyclictest0-21swapper/307:40:023
3704665992013,5cyclictest391ktimers/309:20:243
3704665992013,4cyclictest3723951-21grep08:00:263
3704665991913,3cyclictest0-21swapper/311:45:133
3704665991911,6cyclictest391ktimers/311:20:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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