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2026-07-16 - 23:39

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 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 Jul 16, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811240,0rcu_preempt19-21ksoftirqd/110:02:191
811220,0rcu_preempt19-21ksoftirqd/110:25:141
811180,0rcu_preempt19-21ksoftirqd/110:43:531
811130,0rcu_preempt54-21kswapd011:17:371
811110,0rcu_preempt19-21ksoftirqd/107:32:341
811090,0rcu_preempt19-21ksoftirqd/108:12:251
811060,0rcu_preempt19-21ksoftirqd/109:52:521
811050,0rcu_preempt19-21ksoftirqd/112:06:121
811050,0rcu_preempt19-21ksoftirqd/111:42:281
81990,0rcu_preempt19-21ksoftirqd/111:16:341
81960,0rcu_preempt19-21ksoftirqd/112:24:371
81880,0rcu_preempt19-21ksoftirqd/112:28:071
81880,0rcu_preempt19-21ksoftirqd/110:37:131
81880,0rcu_preempt19-21ksoftirqd/109:33:511
81860,0rcu_preempt19-21ksoftirqd/111:32:191
81850,0rcu_preempt19-21ksoftirqd/110:07:541
81850,0rcu_preempt19-21ksoftirqd/109:22:121
81850,0rcu_preempt19-21ksoftirqd/108:17:261
81830,0rcu_preempt19-21ksoftirqd/110:54:361
81830,0rcu_preempt19-21ksoftirqd/109:37:131
81830,0rcu_preempt19-21ksoftirqd/109:37:131
81830,0rcu_preempt19-21ksoftirqd/108:23:121
81800,0rcu_preempt19-21ksoftirqd/112:08:281
81790,0rcu_preempt19-21ksoftirqd/108:07:001
81770,0rcu_preempt19-21ksoftirqd/111:56:181
81770,0rcu_preempt19-21ksoftirqd/110:17:291
81760,0rcu_preempt19-21ksoftirqd/107:22:351
81750,0rcu_preempt19-21ksoftirqd/112:00:261
81750,0rcu_preempt19-21ksoftirqd/109:51:561
81750,0rcu_preempt19-21ksoftirqd/108:47:161
81740,0rcu_preempt19-21ksoftirqd/112:36:051
81740,0rcu_preempt19-21ksoftirqd/110:50:361
81730,0rcu_preempt19-21ksoftirqd/112:17:001
81730,0rcu_preempt19-21ksoftirqd/110:27:191
81730,0rcu_preempt19-21ksoftirqd/109:12:191
81730,0rcu_preempt19-21ksoftirqd/107:37:341
81720,0rcu_preempt19-21ksoftirqd/111:27:011
81720,0rcu_preempt19-21ksoftirqd/110:32:291
81720,0rcu_preempt19-21ksoftirqd/110:12:211
81720,0rcu_preempt19-21ksoftirqd/107:57:261
81710,0rcu_preempt54-21kswapd009:07:351
81710,0rcu_preempt19-21ksoftirqd/111:41:431
81710,0rcu_preempt19-21ksoftirqd/110:57:501
81710,0rcu_preempt19-21ksoftirqd/109:27:301
81710,0rcu_preempt19-21ksoftirqd/108:09:081
81700,0rcu_preempt30645-21cyclictest07:28:531
81690,0rcu_preempt19-21ksoftirqd/111:07:481
81690,0rcu_preempt19-21ksoftirqd/107:17:171
81690,0rcu_preempt19-21ksoftirqd/107:17:171
81680,0rcu_preempt19-21ksoftirqd/108:45:291
10050680,0irq/346-484840041ktimersoftd/009:13:090
81670,0rcu_preempt54-21kswapd007:47:201
10050670,0irq/346-484840041ktimersoftd/010:22:310
3064699662,0cyclictest8833-21awk11:22:130
81640,0rcu_preempt19-21ksoftirqd/109:46:321
81640,0rcu_preempt19-21ksoftirqd/107:13:191
81630,0rcu_preempt54-21kswapd011:24:271
3064699638,0cyclictest13363-21ssh09:47:290
3064699631,0cyclictest5745-21ssh10:12:290
81620,0rcu_preempt3-21ksoftirqd/010:52:280
3064699625,0cyclictest23762-1kworker/0:0H11:37:330
3064699623,0cyclictest0-21swapper/010:09:470
3064699622,0cyclictest30829-21ssh10:38:040
3064699614,0cyclictest4849-1kworker/0:1H09:52:430
3064699614,0cyclictest27399-1kworker/0:3H09:33:420
3064699612,0cyclictest16490-21apt-get10:57:120
3064699611,0cyclictest16338-1kworker/0:1H11:36:560
3064699606,0cyclictest54-21kswapd009:30:130
3064699602,0cyclictest8599-21taskset10:48:280
3064699602,0cyclictest28791-21munin-node0
3064699601,0cyclictest11233-1kworker/0:3H11:27:520
3064699592,0cyclictest31996-21ssh12:17:490
3064699592,0cyclictest31996-21ssh12:17:490
3064699592,0cyclictest12936-21runrttasks11:58:430
3064699592,0cyclictest0-21swapper/012:13:500
3064699592,0cyclictest0-21swapper/010:06:200
3064699591,0cyclictest851-21rngd12:09:410
3064699591,0cyclictest3394-21ntp_states09:37:270
3064699591,0cyclictest3394-21ntp_states09:37:270
3064699591,0cyclictest24549-1kworker/0:1H10:00:090
3064699591,0cyclictest13091-21chrt12:32:170
3064699591,0cyclictest0-21swapper/012:28:140
3064699583,0cyclictest0-21swapper/010:17:280
3064699582,0cyclictest24478-21ssh10:32:180
3064699582,0cyclictest192702chrt10:27:100
3064699582,0cyclictest0-21swapper/011:48:250
3064699581,0cyclictest27934-21munin-node0
81570,0rcu_preempt19-21ksoftirqd/107:56:161
3064699575,0cyclictest19126-21ssh09:20:540
3064699572,0cyclictest3824-21ntpq12:22:250
3064699572,0cyclictest19948-21fschecks_count08:12:200
3064699572,0cyclictest0-21swapper/012:05:160
3064699571,0cyclictest2310-21sh08:57:160
3064699571,0cyclictest0-21swapper/011:08:230
81560,0rcu_preempt19-21ksoftirqd/109:17:221
81560,0rcu_preempt19-21ksoftirqd/108:57:241
81560,0rcu_preempt19-21ksoftirqd/108:27:271
3064699565,0cyclictest1753-21aten_rapower_en10:42:130
3064699563,0cyclictest0-21swapper/011:22:010
3064699563,0cyclictest0-21swapper/009:24:280
3064699562,0cyclictest0-21swapper/008:57:010
3064699562,0cyclictest0-21swapper/008:06:290
30646995619,0cyclictest31273-21apt-get11:12:120
3064699561,0cyclictest7498-21ssh09:42:120
3064699561,0cyclictest6109-21dropbear11:52:170
3064699553,0cyclictest0-21swapper/008:07:270
3064699553,0cyclictest0-21swapper/007:57:260
3064699552,0cyclictest21637-21df_inode11:02:140
3064699552,0cyclictest1518-21ping07:42:120
81540,0rcu_preempt19-21ksoftirqd/111:02:101
3064699548,0cyclictest5230-21munin-plugin-st09:07:000
3064699544,0cyclictest1518-21ping07:22:200
3064699542,0cyclictest0-21swapper/007:07:210
3064699541,0cyclictest6279-21ntpq09:07:230
81530,0rcu_preempt19-21ksoftirqd/108:37:011
3064699533,0cyclictest22650-21chrt08:19:540
3064699533,0cyclictest0-21swapper/007:12:180
3064699532,0cyclictest0-21swapper/007:17:130
3064699532,0cyclictest0-21swapper/007:17:130
3064699528,0cyclictest32011-21switchtime08:47:250
3064699525,0cyclictest1518-21ping07:32:120
3064699522,0cyclictest27751-21runrttasks08:36:580
30646995211,0cyclictest23000-21munin-node0
81510,0rcu_preempt19-21ksoftirqd/112:18:031
81510,0rcu_preempt19-21ksoftirqd/112:18:031
81510,0rcu_preempt19-21ksoftirqd/111:47:111
3064699513,0cyclictest0-21swapper/007:52:210
3064699512,0cyclictest5802-21munin-node0
3064699512,0cyclictest0-21swapper/008:27:170
3064699511,0cyclictest31066-21basename08:47:000
81500,0rcu_preempt3-21ksoftirqd/007:02:190
3064699483,0cyclictest0-21swapper/007:47:250
3064699481,0cyclictest1518-21ping07:37:170
81470,0rcu_preempt30991-21taskset07:07:161
81470,0rcu_preempt19-21ksoftirqd/108:37:261
81440,0rcu_preempt19-21ksoftirqd/109:57:241
81440,0rcu_preempt19-21ksoftirqd/109:02:271
81420,0rcu_preempt16703-21kworker/1:108:52:311
81350,0rcu_preempt19-21ksoftirqd/107:02:131
81340,0rcu_preempt1518-21ping07:43:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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