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2026-08-16 - 08:09

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 792 highest latencies:
System rackbslot5s.osadl.org (updated Sun Aug 16, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3695901994941,4cyclictest3748026-21cut21:40:001
3695906994638,4cyclictest3789378-21sh23:40:002
3695906994436,5cyclictest3763448-21kworker/u8:1+events_unbound22:52:112
3695901994427,7cyclictest3792327-21grep23:45:241
3695910994335,4cyclictest0-21swapper/321:25:003
3695897994335,5cyclictest3695890-21cyclictest23:47:120
3695901994235,4cyclictest3734156-21apt21:00:011
3695910994132,5cyclictest0-21swapper/300:35:003
3695906994132,5cyclictest3713701-21sh20:00:022
3695906994131,6cyclictest3787276-21unixbench_singl23:30:262
3695897994134,4cyclictest3746309-21cron21:35:010
3695897994132,6cyclictest3732846-21grep20:55:140
3695901994030,7cyclictest231ktimers/121:30:121
3695901994029,7cyclictest3739279-21cron21:15:011
3695897994031,6cyclictest3738864-21unixbench_singl21:10:260
3695906993932,4cyclictest3796420-21cron00:00:002
3695906993932,4cyclictest3796420-21cron00:00:002
3695901993921,3cyclictest0-21swapper/123:22:221
3695897993932,4cyclictest3696840-21switchtime19:10:250
3695910993830,5cyclictest3703478-21cut19:30:003
3695910993830,4cyclictest0-21swapper/300:05:013
3695910993830,4cyclictest0-21swapper/300:05:003
3695906993829,6cyclictest0-21swapper/222:00:002
3695906993828,5cyclictest3792657-21kworker/u8:0+events_unbound00:07:172
369590699380,34cyclictest311ktimers/221:10:142
3695901993832,4cyclictest3766908-21kworker/u8:0+events_unbound22:37:091
3695901993826,9cyclictest3699352-21grep19:15:271
3695897993826,8cyclictest3710300-21idleruntime-cro19:50:010
3695910993727,7cyclictest3754839-21apt-get22:00:013
3695901993727,7cyclictest3797681-21grep00:00:271
3695901993727,7cyclictest3797681-21grep00:00:271
3695897993729,5cyclictest3735407-21unixbench_multi21:00:270
3695897993725,7cyclictest0-21swapper/022:15:250
369589799371,9cyclictest11-21ksoftirqd/019:35:140
369589799371,10cyclictest11-21ksoftirqd/000:10:150
3695910993629,4cyclictest3756400-21kworker/u8:0+events_unbound22:05:163
3695910993629,4cyclictest0-21swapper/322:00:203
3695906993628,5cyclictest3744401-21kworker/u8:1+events_unbound21:50:412
369590199369,8cyclictest24-21ksoftirqd/122:00:001
3695901993625,7cyclictest0-21swapper/122:10:261
3695901993618,4cyclictest0-21swapper/121:09:341
3695901993617,9cyclictest131rcu_preempt23:05:251
3695901993617,9cyclictest131rcu_preempt23:05:241
3695901993616,5cyclictest3805094-21latency_hist00:25:011
3695897993626,6cyclictest0-21swapper/021:25:000
3695910993527,5cyclictest3737580-21sh21:10:023
3695910993525,6cyclictest3762530-21fschecks_time22:20:163
3695901993529,4cyclictest3802905-21kworker/u8:2+events_unbound00:17:191
3695901993529,4cyclictest3775511-21kworker/u8:0+events_unbound23:02:101
3695901993527,3cyclictest0-21swapper/120:15:161
3695901993523,4cyclictest131rcu_preempt00:10:271
3695901993516,9cyclictest131rcu_preempt20:44:231
3695901993516,9cyclictest131rcu_preempt20:44:231
3695897993528,4cyclictest3782577-21idleruntime-cro23:20:000
3695910993427,5cyclictest3766908-21kworker/u8:0+events_unbound22:47:113
3695910993426,5cyclictest0-21swapper/322:20:003
3695910993424,7cyclictest3727352-21sendmail20:40:003
3695910993424,7cyclictest3727352-21sendmail20:40:003
3695901993426,4cyclictest0-21swapper/119:45:171
3695901993425,5cyclictest0-21swapper/121:25:161
3695901993422,5cyclictest131rcu_preempt23:34:431
3695901993420,7cyclictest131rcu_preempt00:09:501
3695901993413,5cyclictest131rcu_preempt20:05:161
3695901993411,11cyclictest131rcu_preempt20:30:161
3695897993428,4cyclictest3756400-21kworker/u8:0+events_unbound22:02:040
3695897993425,6cyclictest0-21swapper/000:05:010
3695897993425,6cyclictest0-21swapper/000:05:000
3695897993419,5cyclictest3708385-21kworker/u8:3+events_unbound19:44:420
369589799340,7cyclictest0-21swapper/020:40:120
369589799340,7cyclictest0-21swapper/020:40:110
369590699333,5cyclictest131rcu_preempt21:00:132
3695906993324,7cyclictest3785712-21kworker/u8:0+events_unbound23:42:142
3695901993325,4cyclictest0-21swapper/123:55:001
3695901993323,7cyclictest3765076-21grep22:25:261
3695901993322,4cyclictest131rcu_preempt20:20:211
3695901993320,5cyclictest131rcu_preempt22:40:141
3695901993315,9cyclictest131rcu_preempt19:44:581
3695897993326,4cyclictest0-21swapper/000:35:000
3695897993323,6cyclictest0-21swapper/022:45:260
3695897993315,5cyclictest3763448-21kworker/u8:1+events_unbound22:55:450
3695897993313,6cyclictest131rcu_preempt19:30:130
3695910993224,5cyclictest3699859-21sendmail19:20:003
3695906993222,7cyclictest0-21swapper/200:10:282
369590199326,6cyclictest24-21ksoftirqd/100:25:171
3695901993222,7cyclictest231ktimers/121:05:001
3695901993221,8cyclictest231ktimers/122:05:011
3695901993219,5cyclictest131rcu_preempt21:20:171
3695901993218,3cyclictest131rcu_preempt23:25:141
3695901993217,8cyclictest131rcu_preempt22:50:221
3695901993215,9cyclictest131rcu_preempt20:00:221
3695901993210,3cyclictest131rcu_preempt21:15:221
3695897993225,4cyclictest0-21swapper/021:45:260
3695897993223,5cyclictest0-21swapper/020:16:550
3695910993123,4cyclictest3774458-21fschecks_time22:55:193
3695910993121,6cyclictest0-21swapper/319:50:013
3695910993119,7cyclictest0-21swapper/320:20:003
3695906993124,4cyclictest0-21swapper/223:05:012
369590199317,5cyclictest231ktimers/122:20:001
3695901993118,4cyclictest131rcu_preempt19:31:171
3695901993116,4cyclictest131rcu_preempt22:09:051
3695901993116,3cyclictest131rcu_preempt19:55:191
3695901993114,9cyclictest131rcu_preempt22:30:131
3695901993114,9cyclictest131rcu_preempt19:10:221
3695901993114,4cyclictest131rcu_preempt20:10:161
3695901993113,4cyclictest131rcu_preempt20:25:281
3695901993112,9cyclictest0-21swapper/120:51:431
3695901993110,9cyclictest131rcu_preempt20:48:341
3695901993110,5cyclictest131rcu_preempt23:15:001
3695901993110,10cyclictest131rcu_preempt21:55:011
3695897993122,6cyclictest0-21swapper/020:10:250
3695897993122,6cyclictest0-21swapper/019:25:010
3695897993121,6cyclictest0-21swapper/023:05:260
3695897993121,6cyclictest0-21swapper/023:05:260
3695910993023,3cyclictest3717115-21kthreadd20:10:003
3695910993023,3cyclictest0-21swapper/323:25:253
3695906993024,3cyclictest0-21swapper/223:00:002
3695906993022,4cyclictest0-21swapper/220:20:242
3695906993022,4cyclictest0-21swapper/200:35:162
3695906993021,5cyclictest3765044-21unixbench_multi22:25:262
369590199308,5cyclictest24-21ksoftirqd/123:35:161
3695901993020,7cyclictest231ktimers/119:40:011
3695901993018,4cyclictest131rcu_preempt19:50:151
3695901993017,6cyclictest3808246-21kworker/u8:1+events_unbound00:38:221
3695901993016,4cyclictest131rcu_preempt23:55:271
3695901993016,4cyclictest131rcu_preempt23:55:261
3695901993013,4cyclictest131rcu_preempt23:42:551
3695901993013,4cyclictest131rcu_preempt21:48:341
3695901993011,10cyclictest131rcu_preempt20:35:261
3695901993011,10cyclictest131rcu_preempt20:35:251
369589799308,5cyclictest131rcu_preempt20:20:100
3695897993022,5cyclictest0-21swapper/021:55:120
3695897993020,6cyclictest0-21swapper/023:30:260
3695897993020,6cyclictest0-21swapper/023:10:270
3695897993020,6cyclictest0-21swapper/022:50:260
3695897993020,6cyclictest0-21swapper/020:25:290
3695897993019,7cyclictest0-21swapper/020:05:000
3695910992922,4cyclictest0-21swapper/322:25:273
3695906992922,4cyclictest0-21swapper/219:10:272
3695906992921,5cyclictest0-21swapper/221:30:152
3695906992921,4cyclictest0-21swapper/222:05:252
3695906992921,4cyclictest0-21swapper/221:45:262
3695906992921,4cyclictest0-21swapper/220:30:262
3695906992918,7cyclictest3710287-21cron19:50:012
369590199299,11cyclictest3702813-21cat19:25:251
3695901992918,5cyclictest131rcu_preempt22:56:301
3695901992913,5cyclictest131rcu_preempt21:40:121
3695901992912,9cyclictest131rcu_preempt19:20:021
3695901992912,5cyclictest131rcu_preempt23:15:251
3695901992911,4cyclictest131rcu_preempt22:25:001
369589799297,12cyclictest11-21ksoftirqd/021:40:100
3695897992922,4cyclictest3768905-21cron22:40:000
3695897992922,4cyclictest0-21swapper/021:30:010
3695897992920,6cyclictest0-21swapper/020:45:270
3695897992919,6cyclictest0-21swapper/021:15:250
3695897992910,10cyclictest11-21ksoftirqd/019:25:260
3695910992822,4cyclictest3777263-21kworker/u8:2+events_unbound23:08:413
3695910992822,4cyclictest3777263-21kworker/u8:2+events_unbound23:08:413
3695910992821,4cyclictest3734184-21sendmail21:00:003
3695910992821,3cyclictest0-21swapper/322:40:003
3695906992822,4cyclictest3730671-21kworker/u8:2+events_unbound21:27:012
3695906992820,6cyclictest3723641-21kworker/u8:1+events_unbound20:28:422
3695906992820,5cyclictest0-21swapper/223:30:002
3695906992820,4cyclictest0-21swapper/220:40:232
3695906992820,4cyclictest0-21swapper/220:40:232
3695906992818,6cyclictest0-21swapper/222:25:002
3695906992817,8cyclictest3760846-21fschecks_time22:15:162
3695906992817,8cyclictest3699836-21apt19:20:002
3695901992813,5cyclictest131rcu_preempt00:30:161
3695901992812,9cyclictest131rcu_preempt22:45:141
369589799289,4cyclictest3737123-21unixbench_multi21:05:250
3695897992822,4cyclictest3789017-21kworker/u8:2+events_unbound23:40:420
3695897992820,5cyclictest0-21swapper/020:30:260
3695897992818,6cyclictest0-21swapper/023:50:250
3695897992813,5cyclictest131rcu_preempt00:28:440
3695910992720,5cyclictest3747944-21kworker/u8:2+events_unbound21:47:033
3695910992720,4cyclictest0-21swapper/320:10:253
3695906992719,4cyclictest0-21swapper/200:00:272
3695906992719,4cyclictest0-21swapper/200:00:272
369589799279,5cyclictest131rcu_preempt21:35:270
369589799277,10cyclictest11-21ksoftirqd/022:10:250
369589799276,4cyclictest0-21swapper/022:23:010
369589799273,3cyclictest131rcu_preempt00:20:180
369589799273,12cyclictest11-21ksoftirqd/020:05:240
3695897992721,3cyclictest3803265-21sendmail00:20:000
3695897992720,5cyclictest3711868-21kworker/u8:1+events_unbound19:55:030
3695897992720,4cyclictest0-21swapper/019:15:260
3695897992713,8cyclictest131rcu_preempt23:35:210
3695897992710,10cyclictest0-21swapper/023:25:160
369591099269,5cyclictest3738645-21cat21:10:253
3695910992620,3cyclictest0-21swapper/323:40:293
3695910992619,5cyclictest3804719-21kworker/u8:1+events_unbound00:27:223
3695910992618,4cyclictest0-21swapper/322:30:273
3695906992619,3cyclictest0-21swapper/223:50:002
3695906992618,6cyclictest3804719-21kworker/u8:1+events_unbound00:22:192
3695906992618,4cyclictest0-21swapper/222:40:252
3695906992618,4cyclictest0-21swapper/221:35:272
3695906992618,4cyclictest0-21swapper/219:40:262
3695906992616,6cyclictest0-21swapper/223:05:262
3695906992616,6cyclictest0-21swapper/223:05:262
369590699261,4cyclictest131rcu_preempt21:00:002
369589799267,5cyclictest131rcu_preempt22:45:000
3695897992618,4cyclictest0-21swapper/000:09:590
3695897992617,6cyclictest3758285-21unixbench_singl22:05:240
3695910992519,3cyclictest0-21swapper/323:45:243
3695910992518,4cyclictest3752681-21unixbench_multi21:50:243
3695910992518,4cyclictest0-21swapper/320:50:243
3695910992518,4cyclictest0-21swapper/319:15:013
3695910992517,5cyclictest0-21swapper/300:25:003
3695910992515,7cyclictest3746315-21apt21:35:013
3695910992515,7cyclictest3714948-21grep20:00:273
3695910992515,6cyclictest0-21swapper/300:20:003
369590699259,10cyclictest3801182-21kworker/u8:1+events_unbound00:15:212
369590699256,9cyclictest0-21swapper/220:52:522
3695906992519,3cyclictest0-21swapper/220:10:192
3695906992518,5cyclictest3744401-21kworker/u8:1+events_unbound22:00:012
3695906992518,3cyclictest0-21swapper/222:50:012
3695906992517,4cyclictest0-21swapper/220:40:002
3695906992517,4cyclictest0-21swapper/220:40:002
3695906992516,7cyclictest3792657-21kworker/u8:0+events_unbound23:52:162
369589799258,6cyclictest11-21ksoftirqd/000:35:250
3695897992518,4cyclictest0-21swapper/020:35:190
3695897992518,4cyclictest0-21swapper/020:35:180
3695897992517,4cyclictest0-21swapper/000:00:000
3695897992517,4cyclictest0-21swapper/000:00:000
3695897992516,5cyclictest0-21swapper/023:20:260
3695910992418,3cyclictest0-21swapper/319:40:243
3695906992419,3cyclictest3711868-21kworker/u8:1+events_unbound19:54:202
3695906992418,4cyclictest3747944-21kworker/u8:2+events_unbound21:44:422
3695906992418,3cyclictest0-21swapper/220:00:182
3695906992418,3cyclictest0-21swapper/200:30:212
3695906992417,4cyclictest0-21swapper/220:45:192
3695906992416,4cyclictest0-21swapper/220:05:252
3695906992415,5cyclictest3720507-21cron20:20:002
3695906992413,7cyclictest3780383-21grep23:10:262
369589799247,12cyclictest13850irq/36-mmc122:25:100
3695897992418,4cyclictest13850irq/36-mmc121:55:000
3695897992411,7cyclictest131rcu_preempt20:50:200
369591099235,3cyclictest131rcu_preempt20:25:273
3695910992317,4cyclictest3799460-21kworker/u8:3+events_unbound00:10:183
3695910992317,3cyclictest0-21swapper/323:05:003
3695910992317,3cyclictest0-21swapper/322:50:233
3695910992317,3cyclictest0-21swapper/320:40:253
3695910992317,3cyclictest0-21swapper/320:40:243
3695910992316,5cyclictest3710153-21kworker/u8:0+events_unbound19:50:423
3695910992316,4cyclictest3782551-21cron23:20:013
3695910992316,4cyclictest0-21swapper/323:20:163
3695910992316,4cyclictest0-21swapper/320:30:163
3695910992316,4cyclictest0-21swapper/300:10:003
3695910992316,3cyclictest0-21swapper/321:25:133
3695910992315,5cyclictest0-21swapper/321:40:013
3695910992315,5cyclictest0-21swapper/319:35:173
3695906992317,3cyclictest0-21swapper/219:25:192
3695906992317,3cyclictest0-21swapper/219:20:232
3695906992316,5cyclictest3699682-21kworker/u8:0-events_freezable_power_19:30:242
3695906992315,4cyclictest0-21swapper/221:05:252
369590699231,18cyclictest3783029-21fschecks_time23:20:172
3695897992316,3cyclictest0-21swapper/023:02:240
3695910992216,3cyclictest0-21swapper/323:50:243
3695910992216,3cyclictest0-21swapper/320:45:253
3695910992214,5cyclictest0-21swapper/322:10:163
3695910992214,4cyclictest0-21swapper/322:40:253
369590699222,4cyclictest131rcu_preempt21:25:012
3695906992216,3cyclictest0-21swapper/223:15:172
3695906992216,3cyclictest0-21swapper/200:25:122
3695906992213,6cyclictest3705606-21tune2fs19:35:172
3695910992117,2cyclictest0-21swapper/300:37:463
3695910992116,3cyclictest0-21swapper/321:05:003
3695910992115,4cyclictest3775511-21kworker/u8:0+events_unbound23:12:113
3695910992112,6cyclictest3713282-21grep19:55:273
3695910992111,7cyclictest0-21swapper/319:25:003
3695906992115,3cyclictest0-21swapper/222:30:162
3695906992115,3cyclictest0-21swapper/222:10:122
3695906992115,3cyclictest0-21swapper/221:19:112
3695906992112,6cyclictest3768925-21sendmail22:40:012
369591099205,3cyclictest131rcu_preempt20:20:153
369591099201,4cyclictest131rcu_preempt23:30:123
3695910992013,5cyclictest391ktimers/321:15:133
3695910992013,4cyclictest0-21swapper/321:40:143
3695910992011,6cyclictest3795386-21/usr/sbin/munin23:55:193
3695910992011,6cyclictest3795386-21/usr/sbin/munin23:55:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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