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2026-08-20 - 19:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, 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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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackaslot5s.osadl.org (updated Thu Aug 20, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811450,0rcu_preempt19-21ksoftirqd/110:56:341
811370,0rcu_preempt19-21ksoftirqd/109:23:551
811280,0rcu_preempt19-21ksoftirqd/110:46:371
811280,0rcu_preempt19-21ksoftirqd/110:46:371
811260,0rcu_preempt19-21ksoftirqd/109:45:071
811250,0rcu_preempt19-21ksoftirqd/109:50:001
811220,0rcu_preempt19-21ksoftirqd/110:35:011
811080,0rcu_preempt19-21ksoftirqd/111:56:271
811080,0rcu_preempt19-21ksoftirqd/111:31:471
811080,0rcu_preempt19-21ksoftirqd/110:05:561
811080,0rcu_preempt19-21ksoftirqd/108:08:271
811070,0rcu_preempt19-21ksoftirqd/110:52:001
811060,0rcu_preempt19943-21ssh11:50:381
811060,0rcu_preempt19-21ksoftirqd/112:01:181
811030,0rcu_preempt19-21ksoftirqd/111:15:141
811030,0rcu_preempt19-21ksoftirqd/110:25:001
811010,0rcu_preempt19-21ksoftirqd/112:38:121
811000,0rcu_preempt19-21ksoftirqd/110:21:361
81990,0rcu_preempt19-21ksoftirqd/112:15:011
81980,0rcu_preempt19-21ksoftirqd/109:54:521
81980,0rcu_preempt19-21ksoftirqd/109:54:521
81980,0rcu_preempt0-21swapper/111:03:491
81970,0rcu_preempt19-21ksoftirqd/109:10:381
81970,0rcu_preempt19-21ksoftirqd/109:10:381
81950,0rcu_preempt19-21ksoftirqd/111:10:201
81940,0rcu_preempt19-21ksoftirqd/112:14:021
81930,0rcu_preempt19-21ksoftirqd/110:40:121
81930,0rcu_preempt19-21ksoftirqd/110:32:291
81930,0rcu_preempt19-21ksoftirqd/109:32:171
81930,0rcu_preempt19-21ksoftirqd/109:27:521
81920,0rcu_preempt19-21ksoftirqd/111:35:211
81920,0rcu_preempt19-21ksoftirqd/111:27:291
81920,0rcu_preempt19-21ksoftirqd/110:12:301
81920,0rcu_preempt19-21ksoftirqd/110:12:301
81920,0rcu_preempt19-21ksoftirqd/109:42:191
81910,0rcu_preempt54-21kswapd011:06:151
81900,0rcu_preempt19-21ksoftirqd/112:25:501
81900,0rcu_preempt19-21ksoftirqd/108:26:051
81900,0rcu_preempt19-21ksoftirqd/108:19:491
81890,0rcu_preempt19-21ksoftirqd/110:00:581
81880,0rcu_preempt19-21ksoftirqd/112:21:531
81870,0rcu_preempt19-21ksoftirqd/109:39:351
81850,0rcu_preempt19-21ksoftirqd/107:52:311
81840,0rcu_preempt19-21ksoftirqd/109:18:401
81820,0rcu_preempt19-21ksoftirqd/107:59:511
81810,0rcu_preempt19-21ksoftirqd/108:15:451
81810,0rcu_preempt19-21ksoftirqd/108:15:451
81800,0rcu_preempt19-21ksoftirqd/111:41:451
81790,0rcu_preempt19-21ksoftirqd/107:43:471
81790,0rcu_preempt19-21ksoftirqd/107:30:011
10050770,0irq/346-484840054-21kswapd011:42:430
81760,0rcu_preempt19-21ksoftirqd/108:31:371
81760,0rcu_preempt19-21ksoftirqd/108:13:201
81750,0rcu_preempt19-21ksoftirqd/107:45:061
81750,0rcu_preempt19-21ksoftirqd/107:35:111
81750,0rcu_preempt19-21ksoftirqd/107:20:231
81740,0rcu_preempt54-21kswapd012:32:431
81730,0rcu_preempt19-21ksoftirqd/107:19:401
81720,0rcu_preempt54-21kswapd010:17:181
81720,0rcu_preempt19-21ksoftirqd/107:58:591
81720,0rcu_preempt19-21ksoftirqd/107:25:041
81720,0rcu_preempt15427-1kworker/1:2H11:48:321
81710,0rcu_preempt19-21ksoftirqd/108:39:351
10050710,0irq/346-48484002910-1kworker/0:1H12:08:250
81700,0rcu_preempt19-21ksoftirqd/108:44:541
81700,0rcu_preempt11766-21apt-get08:39:521
81690,0rcu_preempt19-21ksoftirqd/112:06:211
81680,0rcu_preempt19-21ksoftirqd/111:24:351
81680,0rcu_preempt19-21ksoftirqd/108:55:021
81650,0rcu_preempt3-21ksoftirqd/009:48:170
1446699659,0cyclictest10785-21diskmemload11:09:390
1446699645,0cyclictest9009-1kworker/0:3H10:03:160
1446699641,0cyclictest2280350kworker/0:0H12:29:570
1446699641,0cyclictest18185-1kworker/0:2H10:13:020
1446699641,0cyclictest18185-1kworker/0:2H10:13:020
1446699632,0cyclictest0-21swapper/009:19:510
1446699631,0cyclictest595-1kworker/0:4H10:29:390
1446699631,0cyclictest21009-21munin-node0
1446699621,0cyclictest19191-21munin-node0
1446699621,0cyclictest10853-21taskset10:36:230
81610,0rcu_preempt19-21ksoftirqd/109:04:571
1446699611,0cyclictest15462-21sed12:19:400
1446699605,0cyclictest11650-1kworker/0:0H09:33:150
1446699603,0cyclictest19532-1kworker/0:1H11:23:270
1446699602,0cyclictest491-1kworker/0:0H11:31:200
1446699602,0cyclictest19588-21munin-node0
1446699602,0cyclictest0-21swapper/009:25:270
14466996011,0cyclictest11654-21kernelversion11:10:030
1446699601,0cyclictest29216-1kworker/0:0H09:17:150
1446699601,0cyclictest16339-1kworker/0:1H10:42:570
1446699601,0cyclictest12846-1kworker/0:0H12:19:450
81590,0rcu_preempt19-21ksoftirqd/109:00:021
1446699593,0cyclictest0-21swapper/012:00:130
1446699593,0cyclictest0-21swapper/010:50:110
1446699593,0cyclictest0-21swapper/009:14:150
1446699593,0cyclictest0-21swapper/009:14:150
1446699592,0cyclictest3728-21ssh10:29:520
1446699591,0cyclictest29161-21munin-node0
1446699591,0cyclictest22996-1kworker/0:4H11:28:060
1446699591,0cyclictest13965-1kworker/0:1H10:07:020
1446699583,0cyclictest0-21swapper/011:14:440
1446699583,0cyclictest0-21swapper/007:15:070
1446699582,0cyclictest23479-21ssh10:16:280
1446699582,0cyclictest0-21swapper/012:09:560
1446699582,0cyclictest0-21swapper/011:48:100
1446699582,0cyclictest0-21swapper/011:00:170
14466995813,0cyclictest6832-21apt-get08:24:500
1446699581,0cyclictest28086-1kworker/0:1H10:21:580
1446699573,0cyclictest0-21swapper/009:59:400
1446699573,0cyclictest0-21swapper/009:59:400
1446699572,0cyclictest10050irq/346-484840009:34:520
1446699572,0cyclictest0-21swapper/011:37:150
1446699571,0cyclictest17845-1kworker/0:1H12:35:470
1446699571,0cyclictest17744-21ping07:38:440
1446699566,0cyclictest29030-21ssh09:49:530
1446699562,0cyclictest20190-21ssh10:45:360
1446699562,0cyclictest20190-21ssh10:45:360
1446699561,0cyclictest30952-21latency_hist07:59:410
1446699557,0cyclictest17744-21ping07:24:500
1446699552,0cyclictest17744-21ping07:29:510
1446699552,0cyclictest17096-21if_eth108:54:590
1446699552,0cyclictest1445-21runrttasks07:48:530
1446699552,0cyclictest0-21swapper/008:49:550
1446699552,0cyclictest0-21swapper/007:19:430
14466995511,0cyclictest10277-21munin-node0
1446699551,0cyclictest23252-21munin-node0
1446699542,0cyclictest5028-21munin-run08:19:400
1446699542,0cyclictest5028-21munin-run08:19:400
1446699542,0cyclictest0-21swapper/008:01:560
81530,0rcu_preempt14608-21munin-node1
1446699533,0cyclictest0-21swapper/009:02:520
1446699532,0cyclictest17744-21ping07:39:510
14466995311,0cyclictest19452-1kworker/0:2H09:04:520
81520,0rcu_preempt15760-21ps08:50:061
1446699526,0cyclictest28147-21if_eth007:49:560
1446699522,0cyclictest30677-21ping08:19:430
1446699512,0cyclictest0-21swapper/008:13:030
1446699503,0cyclictest1445-21runrttasks08:08:130
1446699502,0cyclictest1445-21runrttasks08:48:050
1446699502,0cyclictest0-21swapper/008:39:410
1446699492,0cyclictest0-21swapper/007:10:050
81470,0rcu_preempt3-21ksoftirqd/007:05:040
1446699472,0cyclictest0-21swapper/008:30:110
81440,0rcu_preempt19-21ksoftirqd/107:04:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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