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2026-05-15 - 18:59

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 the highest latencies:
System rackbslot5s.osadl.org (updated Fri May 15, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
598018995140,7cyclictest683352-21fschecks_time11:15:163
598007995041,5cyclictest599902-21cron07:15:011
598013994942,4cyclictest600272-21apt-config07:15:032
598013994939,7cyclictest632802-21grep08:45:252
598007994836,8cyclictest613877-21grep07:50:251
598018994733,10cyclictest599961-21sort07:15:013
598018994634,8cyclictest653954-21idleruntime-cro09:50:013
598003994614,24cyclictest0-21swapper/007:10:110
598013994535,8cyclictest438-21cron10:10:002
598013994535,7cyclictest609179-21cron07:40:022
598003994535,7cyclictest636688-21sendmail09:00:000
598018994435,5cyclictest672725-21munin-plugin-st10:45:003
598003994337,4cyclictest613013-21kworker/u8:3+events_unbound07:59:100
598018994235,4cyclictest597995-21cyclictest08:00:253
598013994133,4cyclictest0-21swapper/207:35:002
598018994030,5cyclictest676103-21cron10:55:013
598013994032,4cyclictest0-21swapper/212:35:002
598007994032,5cyclictest646926-21munin-plugin-st09:30:021
598003994028,8cyclictest696788-21sh11:55:010
598003994028,8cyclictest696788-21sh11:55:000
598013993927,8cyclictest617305-21grep08:00:262
598003993932,4cyclictest655662-21munin-plugin-st09:55:000
598018993729,4cyclictest0-21swapper/307:20:003
598018993728,4cyclictest0-21swapper/312:35:133
598018993723,10cyclictest391ktimers/309:35:133
598013993728,6cyclictest677815-21latency_hist11:00:002
59801399371,5cyclictest131rcu_preempt09:00:122
59801399371,5cyclictest131rcu_preempt09:00:122
598003993729,4cyclictest0-21swapper/012:40:010
598007993628,4cyclictest0-21swapper/110:50:011
598007993628,4cyclictest0-21swapper/110:50:001
598007993627,5cyclictest672706-21cron10:45:001
598003993627,6cyclictest632805-21unixbench_multi08:45:250
598003993627,6cyclictest0-21swapper/007:50:000
598003993625,6cyclictest0-21swapper/007:55:010
598018993527,4cyclictest0-21swapper/312:30:003
598018993527,4cyclictest0-21swapper/311:25:013
598018993521,10cyclictest391ktimers/312:30:103
59801899351,8cyclictest0-21swapper/307:45:113
598013993526,5cyclictest0-21swapper/209:20:012
598003993528,3cyclictest0-21swapper/007:40:010
598003993526,6cyclictest650104-21grep09:35:260
598003993524,7cyclictest0-21swapper/009:30:010
598018993427,4cyclictest0-21swapper/310:55:153
598018993425,4cyclictest0-21swapper/311:55:013
598018993425,4cyclictest0-21swapper/311:55:003
598013993427,5cyclictest689646-21kworker/u8:0+events_unbound11:49:522
598013993427,4cyclictest0-21swapper/212:04:592
598013993426,5cyclictest1-21systemd09:49:292
598013993423,7cyclictest0-21swapper/209:10:242
598003993428,3cyclictest0-21swapper/012:30:000
598003993426,5cyclictest0-21swapper/010:40:000
598003993426,4cyclictest0-21swapper/010:55:010
598003993426,4cyclictest0-21swapper/008:00:240
598003993425,6cyclictest643889-21fschecks_count09:20:170
598018993325,4cyclictest0-21swapper/310:10:013
598018993325,4cyclictest0-21swapper/308:45:263
598018993325,4cyclictest0-21swapper/308:35:163
598018993325,4cyclictest0-21swapper/307:59:083
598018993325,3cyclictest0-21swapper/307:40:153
598018993322,7cyclictest673986-21grep10:45:263
598018993322,7cyclictest673986-21grep10:45:263
598018993319,7cyclictest699792-21grep12:00:253
598013993324,6cyclictest625148-21fschecks_count08:25:172
598013993323,7cyclictest655645-21sh09:55:002
598013993321,7cyclictest680780-21grep11:05:242
598013993320,8cyclictest204-21dbus-daemon10:19:302
598003993327,4cyclictest691594-21kworker/u8:1+events_unbound11:44:500
598003993326,3cyclictest0-21swapper/011:30:240
598003993325,4cyclictest0-21swapper/011:00:000
598018993225,4cyclictest0-21swapper/309:50:243
598018993225,3cyclictest0-21swapper/307:55:003
598018993224,4cyclictest0-21swapper/309:20:173
598018993223,6cyclictest0-21swapper/312:15:273
598018993222,6cyclictest0-21swapper/309:35:003
598018993216,6cyclictest624975-21kworker/u8:1+events_unbound08:40:253
598013993223,5cyclictest603629-21grep07:20:262
598013993223,5cyclictest603629-21grep07:20:262
598013993222,7cyclictest673931-21grep10:45:262
598013993222,7cyclictest673931-21grep10:45:262
598013993222,6cyclictest0-21swapper/211:50:242
598013993222,6cyclictest0-21swapper/211:50:242
598013993221,7cyclictest634551-21grep08:50:252
598007993225,4cyclictest604060-21cron07:25:011
598007993225,4cyclictest604060-21cron07:25:001
598007993223,6cyclictest0-21swapper/110:10:251
598003993224,4cyclictest0-21swapper/012:20:170
598003993223,5cyclictest634550-21grep08:50:240
598003993222,7cyclictest651823-21grep09:40:240
598003993219,10cyclictest121ktimers/008:20:130
59801899316,5cyclictest131rcu_preempt08:30:123
598018993123,6cyclictest679228-21kworker/u8:3+events_unbound11:09:443
598018993122,4cyclictest0-21swapper/309:14:213
598013993124,4cyclictest0-21swapper/208:00:002
598013993122,6cyclictest685884-21grep11:20:242
598013993122,6cyclictest0-21swapper/211:05:002
59801399311,14cyclictest614216-21kworker/2:0-mm_percpu_wq08:35:002
598003993125,4cyclictest665810-21kworker/u8:2+events_unbound10:24:320
598003993124,4cyclictest0-21swapper/008:30:000
598003993122,6cyclictest673124-21tune2fs10:45:170
598003993122,6cyclictest673124-21tune2fs10:45:160
59800399311,11cyclictest6307842gunzip08:40:240
59801899309,14cyclictest634606-21kworker/u8:2+events_unbound09:09:313
598018993023,5cyclictest659013-21sshd10:04:303
598018993023,3cyclictest0-21swapper/309:40:243
598018993022,5cyclictest0-21swapper/312:25:003
598018993022,4cyclictest0-21swapper/310:30:253
598013993024,3cyclictest0-21swapper/207:20:002
598013993023,3cyclictest0-21swapper/209:20:282
598013993019,8cyclictest0-21swapper/210:05:002
598007993022,4cyclictest0-21swapper/109:40:241
598003993022,4cyclictest0-21swapper/012:10:260
598003993022,4cyclictest0-21swapper/009:00:260
598003993022,4cyclictest0-21swapper/009:00:250
598003993020,6cyclictest639689-21grep09:05:270
598018992923,3cyclictest0-21swapper/307:30:183
598018992917,6cyclictest619274-21kworker/u8:3+events_unbound09:58:423
59801399299,4cyclictest131rcu_preempt08:55:112
598013992923,4cyclictest697246-21kworker/u8:2+events_unbound12:09:552
59801399292,23cyclictest648826-21sh09:35:002
598013992922,3cyclictest0-21swapper/210:10:262
598013992921,4cyclictest0-21swapper/208:35:252
598013992920,5cyclictest597995-21cyclictest08:40:162
598013992918,7cyclictest0-21swapper/211:35:012
598007992920,5cyclictest0-21swapper/112:00:261
598007992919,7cyclictest622602-21unixbench_singl08:15:261
59800399291,5cyclictest131rcu_preempt10:25:120
598018992822,3cyclictest0-21swapper/308:55:003
598018992820,5cyclictest0-21swapper/308:10:003
598018992820,4cyclictest0-21swapper/312:10:263
598013992822,3cyclictest0-21swapper/210:25:002
598013992820,4cyclictest0-21swapper/211:15:002
598007992821,4cyclictest705310-21cron12:20:001
598007992821,4cyclictest0-21swapper/111:50:241
598007992821,4cyclictest0-21swapper/111:50:241
598007992820,4cyclictest0-21swapper/107:15:031
598007992819,6cyclictest667989-21fschecks_count10:30:151
598003992821,3cyclictest0-21swapper/009:50:010
598003992820,4cyclictest643073-21grep09:15:260
598003992819,6cyclictest0-21swapper/010:00:000
598003992817,7cyclictest694636-21grep11:45:260
598003992812,5cyclictest617353-21kworker/u8:0+events_unbound08:30:420
598018992721,3cyclictest0-21swapper/310:15:253
598018992720,4cyclictest0-21swapper/311:30:013
598018992719,5cyclictest643504-21latency_hist09:20:003
598018992718,6cyclictest0-21swapper/312:00:003
598018992718,6cyclictest0-21swapper/309:30:013
598018992716,8cyclictest691277-21users11:35:243
598013992721,4cyclictest619520-21latency_hist08:10:022
598013992721,3cyclictest0-21swapper/208:10:232
598013992720,4cyclictest0-21swapper/212:00:012
598013992717,6cyclictest0-21swapper/209:05:262
598007992719,5cyclictest682925-21cron11:15:011
598007992719,4cyclictest0-21swapper/111:00:241
598007992717,7cyclictest655643-21cron09:55:011
598007992716,7cyclictest0-21swapper/110:25:011
59800399273,16cyclictest684107-21cat11:15:260
598003992719,5cyclictest679718-21sort11:05:000
598003992718,6cyclictest0-21swapper/012:00:000
598003992718,6cyclictest0-21swapper/010:20:000
598003992717,7cyclictest661180-21tune2fs10:10:160
598018992620,3cyclictest0-21swapper/308:15:003
598018992618,4cyclictest0-21swapper/311:45:163
598018992615,7cyclictest605306-21sed07:25:263
598018992611,9cyclictest391ktimers/310:25:113
59801899261,12cyclictest0-21swapper/312:09:003
598013992621,2cyclictest0-21swapper/207:50:142
598013992618,5cyclictest629-21snmpd07:28:092
598013992618,4cyclictest0-21swapper/210:25:242
598013992617,6cyclictest0-21swapper/209:25:242
59801399261,4cyclictest131rcu_preempt07:40:112
598007992619,4cyclictest703624-21munin-plugin-st12:15:001
598007992619,4cyclictest0-21swapper/110:00:001
598007992617,7cyclictest658706-21kworker/u8:2+events_unbound10:09:311
598007992616,6cyclictest698499-21grep11:59:591
598003992620,4cyclictest619429-21idleruntime-cro08:10:000
598003992620,3cyclictest0-21swapper/008:35:250
598003992620,3cyclictest0-21swapper/007:15:020
598003992618,4cyclictest0-21swapper/012:15:160
59800399261,14cyclictest0-21swapper/010:07:000
598018992519,3cyclictest0-21swapper/311:40:153
598018992518,5cyclictest624975-21kworker/u8:1+events_unbound08:25:243
598018992511,11cyclictest688728-21fschecks_time11:30:153
59801399256,6cyclictest32-21ksoftirqd/212:10:162
598013992519,4cyclictest687865-21grep11:25:262
598013992515,7cyclictest668870-21grep10:30:242
598013992515,7cyclictest311ktimers/211:15:122
598013992515,6cyclictest0-21swapper/209:40:002
598007992519,4cyclictest650533-21munin-run09:40:001
598007992518,3cyclictest0-21swapper/110:25:231
598007992517,4cyclictest0-21swapper/108:44:131
598007992516,6cyclictest0-21swapper/111:15:251
598007992515,6cyclictest0-21swapper/110:05:001
598007992512,8cyclictest0-21swapper/111:24:481
598003992519,4cyclictest671918-21awk10:40:230
598003992519,4cyclictest3690591-21kworker/u8:2+events_unbound07:40:410
598003992519,3cyclictest0-21swapper/008:10:160
598003992519,3cyclictest0-21swapper/007:20:270
598003992519,3cyclictest0-21swapper/007:20:260
598003992519,2cyclictest0-21swapper/011:25:120
598003992516,6cyclictest710721-21cat12:35:010
598003992516,6cyclictest0-21swapper/012:05:150
598003992516,5cyclictest0-21swapper/012:00:250
598003992516,5cyclictest0-21swapper/009:30:260
598003992515,7cyclictest668901-21users10:30:250
598003992515,6cyclictest0-21swapper/011:20:250
598018992415,6cyclictest665518-21seq10:20:383
598018992414,7cyclictest678164-21expr11:00:133
59801399249,10cyclictest204-21dbus-daemon11:39:492
598013992416,4cyclictest0-21swapper/208:20:162
598013992414,6cyclictest0-21swapper/212:15:262
59800799244,6cyclictest0-21swapper/111:40:011
598007992417,4cyclictest0-21swapper/111:45:251
598007992417,3cyclictest0-21swapper/109:20:171
598007992415,6cyclictest0-21swapper/107:25:241
598007992414,6cyclictest711297-21uniq12:35:131
598003992418,4cyclictest662217-21kworker/u8:1+events_unbound11:08:250
598003992418,3cyclictest0-21swapper/011:40:000
59800399241,19cyclictest0-21swapper/007:34:290
59800399241,19cyclictest0-21swapper/007:25:350
59800399241,11cyclictest6819092meminfo11:10:170
598018992317,4cyclictest635775-21ntpq08:55:203
598018992317,3cyclictest0-21swapper/308:20:263
598018992317,3cyclictest0-21swapper/307:20:263
598018992317,3cyclictest0-21swapper/307:20:263
598018992314,6cyclictest638232-21seq09:03:163
598018992314,6cyclictest638232-21seq09:03:163
598018992314,6cyclictest609252-21date07:40:013
59801399237,5cyclictest0-21swapper/207:48:442
598013992317,4cyclictest693601-21kworker/u8:3+events_unbound12:24:572
59800799237,8cyclictest131rcu_preempt10:35:191
598007992317,3cyclictest0-21swapper/112:25:221
598007992317,3cyclictest0-21swapper/111:05:171
598007992317,3cyclictest0-21swapper/108:30:211
598007992316,4cyclictest608512-21switchtime07:35:241
598007992316,4cyclictest605752-21kworker/u8:1+events_unbound07:34:031
598007992315,5cyclictest0-21swapper/108:00:151
598007992315,4cyclictest0-21swapper/111:25:251
598007992315,3cyclictest0-21swapper/112:09:591
598007992313,6cyclictest0-21swapper/108:05:251
598007992310,10cyclictest597995-21cyclictest12:30:111
59800399231,4cyclictest6403162sleep009:10:030
598018992214,5cyclictest621699-21grep08:15:163
598018992214,4cyclictest670571-21grep10:35:253
598018992213,6cyclictest662501-21sort10:15:003
59801899221,18cyclictest681462-21apt11:10:123
59801399226,13cyclictest672017-21/usr/sbin/munin10:40:252
59801399226,12cyclictest656879-21unixbench_multi09:55:242
598013992214,5cyclictest707961-21ls12:25:172
598007992216,3cyclictest640099-21sh09:10:001
598007992216,3cyclictest0-21swapper/111:30:251
598007992215,4cyclictest707029-21sh12:25:001
598007992215,4cyclictest0-21swapper/111:40:231
598007992214,5cyclictest2-21kthreadd08:40:011
598007992214,4cyclictest0-21swapper/110:54:421
598007992213,6cyclictest0-21swapper/108:45:211
598007992212,7cyclictest653112-21grep09:45:231
598003992216,3cyclictest0-21swapper/010:00:260
598013992115,4cyclictest662217-21kworker/u8:1+events_unbound10:35:172
598013992113,6cyclictest617353-21kworker/u8:0+events_unbound08:15:072
598013992113,5cyclictest311ktimers/211:40:222
59801399211,17cyclictest651027-21sort09:40:152
59801399210,4cyclictest131rcu_preempt10:50:102
598007992115,3cyclictest0-21swapper/108:25:231
598007992111,6cyclictest0-21swapper/108:10:151
59800799202,15cyclictest634495-21tail08:50:241
598007992015,3cyclictest0-21swapper/109:00:261
598007992015,3cyclictest0-21swapper/109:00:251
598007992014,3cyclictest0-21swapper/108:20:161
598007992014,3cyclictest0-21swapper/107:55:171
598007991912,5cyclictest0-21swapper/109:10:191
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