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2026-06-16 - 13:11

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
Click here to display the system's profile data or here to proceed to next system.
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 Tue Jun 16, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
621344994916,7cyclictest131rcu_preempt22:20:120
621355994739,6cyclictest630060-21kworker/u8:0+events_unbound19:32:133
621351994538,4cyclictest652994-21munin-plugin-st20:40:002
621351994535,7cyclictest716568-21unixbench_singl23:40:232
621344994416,6cyclictest131rcu_preempt23:30:140
621344994416,6cyclictest131rcu_preempt23:30:140
621348994323,6cyclictest131rcu_preempt22:45:111
621344994337,3cyclictest669605-21unixbench_multi21:25:260
621344994337,3cyclictest669605-21unixbench_multi21:25:260
621355994235,5cyclictest651208-21kworker/u8:0+events_unbound20:37:183
621348994236,4cyclictest657799-21kworker/u8:1+events_unbound21:32:231
621348994225,5cyclictest131rcu_preempt21:20:171
621351994132,6cyclictest0-21swapper/222:15:002
621344994135,4cyclictest696198-21kworker/u8:2+events_unbound22:52:350
621344994135,4cyclictest657799-21kworker/u8:1+events_unbound21:37:230
621355994021,12cyclictest131rcu_preempt00:34:003
621351994031,5cyclictest621336-21cyclictest21:17:212
62135199401,14cyclictest0-21swapper/219:40:102
621348994030,7cyclictest659820-21idleruntime-cro21:00:001
621348994029,7cyclictest645486-21grep20:15:261
621344994034,4cyclictest622940-21kworker/u8:1+events_unbound19:22:130
621344994027,8cyclictest722314-21sendmail00:00:000
621355993933,4cyclictest640740-21kworker/u8:0+events_unbound20:12:153
621355993923,5cyclictest131rcu_preempt22:25:173
621355993920,5cyclictest131rcu_preempt00:25:213
621351993932,4cyclictest706910-21fschecks_count23:15:162
621351993932,4cyclictest706910-21fschecks_count23:15:152
621351993929,6cyclictest0-21swapper/219:20:002
621348993923,6cyclictest640740-21kworker/u8:0-events_freezable_power_20:10:281
621351993832,4cyclictest642476-21kworker/u8:2+events_unbound20:22:172
621351993828,6cyclictest0-21swapper/222:45:262
621351993827,7cyclictest699271-21grep22:50:242
621348993831,5cyclictest671506-21kworker/u8:0+events_unbound21:42:241
621344993832,4cyclictest723977-21kworker/u8:2+events_unbound00:07:470
621344993829,6cyclictest0-21swapper/019:20:000
621355993731,4cyclictest692619-21kworker/u8:1+events_unbound22:37:353
621355993728,6cyclictest683688-21unixbench_multi22:05:273
621355993723,5cyclictest131rcu_preempt22:45:023
621355993721,5cyclictest131rcu_preempt22:20:033
621355993719,5cyclictest131rcu_preempt20:25:173
621351993729,4cyclictest0-21swapper/223:35:012
621351993729,4cyclictest0-21swapper/223:35:002
621351993728,7cyclictest728206-21kworker/u8:2+events_unbound00:17:482
621351993725,9cyclictest692871-21auditctl22:35:002
621348993728,5cyclictest0-21swapper/119:50:151
621355993627,6cyclictest0-21swapper/321:40:013
621355993627,5cyclictest438-21cron23:10:013
621355993626,7cyclictest628258-21grep19:25:263
621355993626,7cyclictest628258-21grep19:25:263
621355993620,10cyclictest131rcu_preempt19:51:273
621355993619,11cyclictest131rcu_preempt23:16:593
621355993619,11cyclictest131rcu_preempt23:16:593
621355993616,3cyclictest131rcu_preempt22:10:163
621355993610,7cyclictest40-21ksoftirqd/323:39:593
621348993628,4cyclictest0-21swapper/100:05:011
621348993626,6cyclictest683686-21grep22:05:261
621348993625,7cyclictest0-21swapper/123:00:011
621348993615,5cyclictest131rcu_preempt23:35:171
621344993626,6cyclictest0-21swapper/020:45:250
621355993525,6cyclictest722288-21sh00:00:003
621355993523,5cyclictest131rcu_preempt00:05:173
621351993529,3cyclictest673586-21latency_hist21:40:002
621351993527,5cyclictest630404-21munin-plugin-st19:35:012
621351993517,11cyclictest629-21snmpd20:50:182
621348993526,5cyclictest0-21swapper/122:00:231
621348993521,7cyclictest131rcu_preempt20:00:241
621348993520,5cyclictest131rcu_preempt00:05:261
621348993516,10cyclictest131rcu_preempt21:25:251
621348993516,10cyclictest131rcu_preempt21:25:241
62134499358,4cyclictest131rcu_preempt21:05:120
62134499358,2cyclictest131rcu_preempt19:25:190
62134499358,2cyclictest131rcu_preempt19:25:180
621344993528,5cyclictest668001-21kworker/u8:0+events_unbound21:21:420
621344993526,5cyclictest208-21systemd-logind19:37:130
621355993428,3cyclictest0-21swapper/321:10:003
621355993426,4cyclictest0-21swapper/319:35:163
621355993423,7cyclictest697547-21grep22:45:253
621355993423,6cyclictest0-21swapper/320:20:013
621355993419,4cyclictest131rcu_preempt23:10:203
621355993418,4cyclictest131rcu_preempt23:40:103
621355993417,7cyclictest656051-21kworker/u8:2+events_unbound20:47:263
621355993417,5cyclictest640740-21kworker/u8:0+events_unbound20:04:083
621355993416,4cyclictest131rcu_preempt00:40:013
621355993415,5cyclictest685791-21kworker/u8:3+events_unbound22:19:383
621355993413,5cyclictest131rcu_preempt23:45:173
621351993428,4cyclictest628338-21kworker/u8:3+events_unbound19:47:142
621351993427,4cyclictest0-21swapper/220:20:002
621351993423,6cyclictest0-21swapper/220:05:282
621351993420,5cyclictest707953-21kworker/u8:0+events_unbound23:25:062
621351993414,5cyclictest131rcu_preempt00:35:252
621348993427,5cyclictest657799-21kworker/u8:1+events_unbound21:57:271
621348993426,5cyclictest0-21swapper/100:40:001
621348993425,4cyclictest0-21swapper/122:30:191
621348993424,7cyclictest650819-21grep20:30:241
621348993424,6cyclictest0-21swapper/100:14:591
621348993424,6cyclictest0-21swapper/100:14:591
621348993423,8cyclictest626591-21grep19:20:261
621348993421,9cyclictest231ktimers/119:40:241
621348993417,5cyclictest131rcu_preempt00:20:141
621348993417,4cyclictest131rcu_preempt19:10:241
621348993415,3cyclictest131rcu_preempt22:15:141
621348993412,11cyclictest0-21swapper/119:55:181
62134499347,4cyclictest131rcu_preempt22:35:130
621344993428,3cyclictest0-21swapper/023:20:000
621344993428,3cyclictest0-21swapper/023:20:000
621344993415,12cyclictest696198-21kworker/u8:2+events_unbound23:08:120
62135599339,12cyclictest40-21ksoftirqd/321:15:223
621355993323,7cyclictest391ktimers/323:30:183
621355993323,7cyclictest391ktimers/323:30:183
621355993323,7cyclictest0-21swapper/322:30:253
621355993322,5cyclictest131rcu_preempt20:40:253
621355993318,4cyclictest131rcu_preempt23:20:213
621355993318,4cyclictest131rcu_preempt23:20:213
621355993311,11cyclictest131rcu_preempt23:50:113
621351993327,4cyclictest689139-21kworker/u8:0+events_unbound22:22:312
621351993326,5cyclictest730456-21kworker/u8:1+events_unbound00:22:412
621351993326,4cyclictest0-21swapper/222:20:012
621351993325,4cyclictest0-21swapper/223:20:242
621351993325,4cyclictest0-21swapper/223:20:242
621351993317,4cyclictest131rcu_preempt22:40:212
621348993327,4cyclictest628338-21kworker/u8:3+events_unbound19:37:141
621348993323,6cyclictest0-21swapper/122:10:251
621348993321,4cyclictest131rcu_preempt23:15:251
621348993321,4cyclictest131rcu_preempt23:15:241
621348993320,3cyclictest131rcu_preempt19:34:511
621348993318,5cyclictest661292-21kworker/u8:0+events_unbound21:04:531
621348993318,11cyclictest231ktimers/120:50:181
621348993317,5cyclictest131rcu_preempt23:25:231
621348993315,8cyclictest131rcu_preempt23:50:141
621348993314,5cyclictest131rcu_preempt22:25:161
621348993312,11cyclictest131rcu_preempt23:10:001
621344993327,3cyclictest0-21swapper/000:40:010
621344993322,7cyclictest0-21swapper/020:20:010
62135599326,5cyclictest381rcuc/319:45:253
62135599325,7cyclictest40-21ksoftirqd/321:20:153
62135599325,13cyclictest40-21ksoftirqd/320:05:263
62135599324,14cyclictest40-21ksoftirqd/321:45:233
621355993223,7cyclictest391ktimers/321:30:163
621355993221,8cyclictest391ktimers/321:45:023
621355993221,8cyclictest391ktimers/321:00:223
621355993221,8cyclictest391ktimers/319:20:253
621355993220,9cyclictest391ktimers/319:40:233
621355993216,4cyclictest131rcu_preempt00:10:123
621355993216,4cyclictest131rcu_preempt00:10:113
621355993215,5cyclictest131rcu_preempt23:25:163
621355993215,4cyclictest131rcu_preempt19:15:233
621355993214,5cyclictest131rcu_preempt00:15:183
621355993214,15cyclictest391ktimers/321:53:163
621355993212,5cyclictest131rcu_preempt21:10:183
621355993210,11cyclictest40-21ksoftirqd/300:20:243
621351993225,3cyclictest0-21swapper/223:35:252
621351993224,4cyclictest0-21swapper/222:00:232
621351993223,6cyclictest659411-21unixbench_singl20:55:272
621351993222,6cyclictest0-21swapper/219:25:252
621351993222,6cyclictest0-21swapper/219:25:252
621351993218,4cyclictest720338-21kworker/u8:0+events_unbound00:02:402
621351993215,8cyclictest131rcu_preempt19:15:012
621348993225,3cyclictest0-21swapper/100:30:171
621348993223,6cyclictest0-21swapper/100:00:001
621348993220,8cyclictest231ktimers/100:15:241
621348993220,4cyclictest131rcu_preempt21:53:181
621348993218,4cyclictest131rcu_preempt23:30:201
621348993218,4cyclictest131rcu_preempt23:30:191
621348993215,11cyclictest131rcu_preempt22:50:231
621348993212,10cyclictest24-21ksoftirqd/120:07:151
621344993226,3cyclictest0-21swapper/022:15:000
621344993221,8cyclictest121ktimers/020:40:130
621344993217,12cyclictest621336-21cyclictest21:55:110
621344993210,5cyclictest131rcu_preempt20:00:130
621355993123,6cyclictest391ktimers/322:00:103
621355993121,7cyclictest391ktimers/321:25:173
621355993121,7cyclictest391ktimers/321:25:173
621355993121,7cyclictest391ktimers/319:10:203
621355993120,8cyclictest391ktimers/322:50:243
621355993114,5cyclictest131rcu_preempt23:00:193
621355993113,9cyclictest131rcu_preempt20:30:213
621355993113,9cyclictest131rcu_preempt19:56:283
621355993112,5cyclictest131rcu_preempt00:00:223
621355993111,11cyclictest131rcu_preempt20:55:213
62135599311,10cyclictest658119-21grep20:55:013
621355993110,11cyclictest131rcu_preempt20:20:253
621351993123,4cyclictest0-21swapper/200:10:252
621351993123,4cyclictest0-21swapper/200:10:252
621351993122,6cyclictest0-21swapper/223:45:202
621351993121,6cyclictest0-21swapper/221:55:242
621351993113,4cyclictest661292-21kworker/u8:0+events_unbound21:06:372
621351993111,10cyclictest657799-21kworker/u8:1+events_unbound22:06:252
62134899315,15cyclictest24-21ksoftirqd/121:35:161
62134899313,14cyclictest24-21ksoftirqd/122:35:201
621348993121,5cyclictest628338-21kworker/u8:3-events_freezable_power_19:48:521
621348993120,7cyclictest231ktimers/120:40:261
621348993120,7cyclictest0-21swapper/121:05:261
621348993120,4cyclictest131rcu_preempt19:27:051
621348993120,4cyclictest131rcu_preempt19:27:051
621348993116,5cyclictest131rcu_preempt22:40:151
621348993116,4cyclictest131rcu_preempt20:20:221
621348993114,11cyclictest716674-21kworker/u8:1+events_unbound23:48:441
621348993112,11cyclictest131rcu_preempt23:10:241
621348993110,4cyclictest0-21swapper/123:00:191
62134499317,3cyclictest131rcu_preempt20:05:170
621344993125,4cyclictest659523-21kworker/u8:2+events_unbound21:00:420
621344993125,4cyclictest642476-21kworker/u8:2+events_unbound20:27:170
621344993121,6cyclictest0-21swapper/021:15:010
621344993116,6cyclictest718419-21kworker/u8:3+events_unbound23:50:120
621355993020,7cyclictest391ktimers/321:55:183
621351993019,6cyclictest0-21swapper/223:15:012
621351993018,4cyclictest131rcu_preempt00:05:242
621351993015,6cyclictest701827-21kworker/u8:0+events_unbound23:02:452
621351993015,12cyclictest32-21ksoftirqd/220:03:102
621351993014,5cyclictest657799-21kworker/u8:1+events_unbound21:30:142
621351993013,9cyclictest131rcu_preempt21:45:242
621351993013,5cyclictest131rcu_preempt21:15:002
62134899309,6cyclictest24-21ksoftirqd/122:20:191
62134899308,10cyclictest24-21ksoftirqd/121:15:011
62134899302,8cyclictest24-21ksoftirqd/119:20:011
621348993017,5cyclictest131rcu_preempt20:25:131
621348993017,4cyclictest131rcu_preempt21:45:161
621348993015,9cyclictest131rcu_preempt23:40:121
621348993014,4cyclictest131rcu_preempt00:25:111
621348993011,5cyclictest131rcu_preempt21:15:251
62134499305,16cyclictest131rcu_preempt21:40:170
621344993022,4cyclictest0-21swapper/022:55:270
621344993022,4cyclictest0-21swapper/022:30:160
621344993021,4cyclictest0-21swapper/000:02:450
621344993019,5cyclictest689139-21kworker/u8:0+events_unbound22:29:290
621355992912,6cyclictest131rcu_preempt22:55:163
62135199298,11cyclictest32-21ksoftirqd/200:25:122
621351992921,5cyclictest0-21swapper/200:30:232
62135199291,12cyclictest0-21swapper/221:41:002
621351992910,3cyclictest6790312cat21:55:012
621351992910,11cyclictest701827-21kworker/u8:0-ext4-rsv-conversion23:10:002
62135199290,13cyclictest0-21swapper/220:45:192
62134499299,4cyclictest131rcu_preempt22:45:120
621344992923,4cyclictest657799-21kworker/u8:1+events_unbound20:57:190
621344992921,4cyclictest0-21swapper/023:45:260
621344992920,6cyclictest0-21swapper/023:15:000
621344992918,5cyclictest685791-21kworker/u8:3+events_unbound22:15:130
62135199285,5cyclictest131rcu_preempt22:55:122
621351992822,4cyclictest657799-21kworker/u8:1+events_unbound21:00:112
621351992821,3cyclictest0-21swapper/221:25:172
621351992821,3cyclictest0-21swapper/221:25:162
621351992812,5cyclictest131rcu_preempt20:25:232
62135199281,12cyclictest0-21swapper/222:38:002
62134899289,7cyclictest131rcu_preempt23:25:001
62134899289,7cyclictest131rcu_preempt23:25:001
621348992818,7cyclictest231ktimers/120:45:101
621348992817,4cyclictest131rcu_preempt20:35:141
621344992822,4cyclictest657799-21kworker/u8:1+events_unbound22:07:300
621344992821,4cyclictest666645-21sh21:20:010
621344992820,4cyclictest0-21swapper/019:55:260
621344992819,6cyclictest732951-21fschecks_time00:30:150
621344992818,4cyclictest131rcu_preempt23:20:340
621344992818,4cyclictest131rcu_preempt23:20:340
621344992816,6cyclictest696198-21kworker/u8:2+events_unbound23:01:030
62135199277,7cyclictest131rcu_preempt23:57:082
621351992718,5cyclictest0-21swapper/223:50:252
621351992714,4cyclictest131rcu_preempt20:10:262
62135199271,12cyclictest0-21swapper/219:55:142
62135199271,11cyclictest0-21swapper/219:53:002
62134499277,13cyclictest728206-21kworker/u8:2+events_unbound00:16:110
62134499275,11cyclictest131rcu_preempt20:55:000
621344992720,4cyclictest0-21swapper/019:40:230
621344992714,7cyclictest11-21ksoftirqd/019:30:170
62134499271,15cyclictest0-21swapper/019:12:010
621351992619,4cyclictest690704-21unixbench_multi22:25:242
621351992612,8cyclictest131rcu_preempt20:30:192
621351992612,6cyclictest32-21ksoftirqd/221:20:152
62135199260,15cyclictest0-21swapper/219:39:282
62134499267,7cyclictest131rcu_preempt19:45:170
62134499267,12cyclictest642476-21kworker/u8:2+events_unbound20:40:010
62134499266,8cyclictest131rcu_preempt22:40:220
621344992619,4cyclictest0-21swapper/020:15:010
621344992619,4cyclictest0-21swapper/000:10:260
621344992619,4cyclictest0-21swapper/000:10:260
621344992617,5cyclictest0-21swapper/019:55:010
621344992615,8cyclictest731836-21awk00:25:210
621344992614,5cyclictest657799-21kworker/u8:1+events_unbound22:00:360
62135199259,9cyclictest131rcu_preempt20:40:202
62134499258,8cyclictest131rcu_preempt23:35:140
62134499257,8cyclictest131rcu_preempt20:30:010
62134499255,8cyclictest131rcu_preempt23:25:170
62134499254,12cyclictest131rcu_preempt23:40:190
621344992518,3cyclictest0-21swapper/021:50:000
621344992517,4cyclictest0-21swapper/020:20:260
621344992514,6cyclictest0-21swapper/021:32:210
62135199241,4cyclictest625523-21apt-get19:20:122
621344992418,4cyclictest0-21swapper/021:50:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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