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2026-07-02 - 03:28

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 02, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811410,0rcu_preempt19-21ksoftirqd/122:26:551
811410,0rcu_preempt19-21ksoftirqd/100:10:361
811380,0rcu_preempt19-21ksoftirqd/123:32:591
811360,0rcu_preempt0-21swapper/121:35:111
811360,0rcu_preempt0-21swapper/121:35:111
811250,0rcu_preempt19-21ksoftirqd/123:27:381
811230,0rcu_preempt19-21ksoftirqd/122:42:431
811160,0rcu_preempt19-21ksoftirqd/121:22:331
811110,0rcu_preempt19-21ksoftirqd/122:40:341
811060,0rcu_preempt19-21ksoftirqd/119:37:291
811000,0rcu_preempt19-21ksoftirqd/119:32:441
81990,0rcu_preempt19-21ksoftirqd/100:02:441
81960,0rcu_preempt29111-1kworker/1:0H21:13:441
81940,0rcu_preempt19-21ksoftirqd/121:47:261
81930,0rcu_preempt19-21ksoftirqd/119:18:261
81920,0rcu_preempt0-21swapper/122:27:361
81920,0rcu_preempt0-21swapper/122:27:361
81900,0rcu_preempt54-21kswapd000:30:221
81860,0rcu_preempt54-21kswapd023:02:001
81830,0rcu_preempt17584-21ssh22:34:541
81810,0rcu_preempt19-21ksoftirqd/120:21:581
81800,0rcu_preempt19-21ksoftirqd/123:39:401
81790,0rcu_preempt54-21kswapd023:18:081
81790,0rcu_preempt19-21ksoftirqd/122:21:561
81780,0rcu_preempt19-21ksoftirqd/122:12:021
81760,0rcu_preempt54-21kswapd022:02:321
81760,0rcu_preempt19-21ksoftirqd/120:12:361
81750,0rcu_preempt29283-1kworker/1:0H22:47:261
81750,0rcu_preempt29283-1kworker/1:0H22:47:261
81750,0rcu_preempt19-21ksoftirqd/123:12:371
81750,0rcu_preempt19-21ksoftirqd/123:12:371
10050750,0irq/346-484840041ktimersoftd/021:27:590
10050750,0irq/346-484840029018-1kworker/0:1H23:22:470
81740,0rcu_preempt2459-1kworker/1:2H21:17:251
10050740,0irq/346-484840054-21kswapd021:23:500
81730,0rcu_preempt19-21ksoftirqd/120:27:441
10050720,0irq/346-48484006590-1kworker/0:1H23:29:470
10050720,0irq/346-48484004946-1kworker/0:0H21:52:090
81710,0rcu_preempt28789-1kworker/1:0H00:24:301
81710,0rcu_preempt19-21ksoftirqd/100:35:231
81710,0rcu_preempt19-21ksoftirqd/100:00:091
10050710,0irq/346-48484009938-1kworker/0:2H21:55:460
10050710,0irq/346-484840027452-1kworker/0:1H21:59:130
81700,0rcu_preempt19-21ksoftirqd/123:44:471
81700,0rcu_preempt19-21ksoftirqd/123:44:471
10050700,0irq/346-48484007449-1kworker/0:1H22:42:590
10050700,0irq/346-484840029018-1kworker/0:1H23:19:060
81690,0rcu_preempt19-21ksoftirqd/120:22:361
81670,0rcu_preempt19-21ksoftirqd/123:10:471
2002699673,0cyclictest0-21swapper/023:06:480
10050670,0irq/346-484840014945-1kworker/0:0H22:02:230
10050670,0irq/346-484840013815-1kworker/0:0H00:10:210
81660,0rcu_preempt19-21ksoftirqd/121:39:491
81640,0rcu_preempt19-21ksoftirqd/123:48:061
2002699642,0cyclictest31528-21apt-get00:27:250
2002699632,0cyclictest5472-21runrttasks00:00:580
2002699632,0cyclictest0-21swapper/021:16:050
81620,0rcu_preempt19-21ksoftirqd/121:07:381
2002699622,0cyclictest29806-21dropbear22:47:300
2002699622,0cyclictest29806-21dropbear22:47:300
81610,0rcu_preempt54-21kswapd023:16:320
81610,0rcu_preempt54-21kswapd023:16:320
81610,0rcu_preempt3-21ksoftirqd/023:35:040
2002699613,0cyclictest0-21swapper/022:18:300
2002699612,0cyclictest0-21swapper/019:42:420
2002699612,0cyclictest0-21swapper/019:42:420
20026996118,0cyclictest0-21swapper/020:22:250
81600,0rcu_preempt19-21ksoftirqd/122:12:301
2002699592,0cyclictest23310-21ping19:32:270
81580,0rcu_preempt19-21ksoftirqd/119:12:331
2002699583,0cyclictest0-21swapper/022:35:000
2002699582,0cyclictest0-21swapper/023:10:000
10050580,0irq/346-484840054-21kswapd020:57:140
81570,0rcu_preempt3-21ksoftirqd/022:28:560
81570,0rcu_preempt3-21ksoftirqd/022:28:560
2002699573,0cyclictest0-21swapper/021:36:590
2002699573,0cyclictest0-21swapper/021:36:590
2002699572,0cyclictest23310-21ping19:17:250
20026995717,0cyclictest0-21swapper/021:42:280
2002699571,0cyclictest23310-21ping19:22:270
2002699562,0cyclictest0-21swapper/022:52:250
2002699562,0cyclictest0-21swapper/000:25:560
20026995617,0cyclictest0-21swapper/000:12:280
2002699556,0cyclictest627850kworker/0:0H00:36:440
2002699552,0cyclictest30474-21munin-node0
81540,0rcu_preempt19-21ksoftirqd/122:56:251
2002699545,0cyclictest26301-1kworker/0:2H19:28:020
2002699543,0cyclictest0-21swapper/022:07:490
2002699542,0cyclictest54-21kswapd023:54:230
20026995417,0cyclictest0-21swapper/021:07:460
81530,0rcu_preempt19-21ksoftirqd/120:42:351
2002699522,0cyclictest0-21swapper/022:22:230
20026995217,0cyclictest0-21swapper/000:17:560
20026995217,0cyclictest0-21swapper/000:17:560
20026995215,0cyclictest0-21swapper/020:12:470
2002699516,0cyclictest0-21swapper/019:47:160
2002699512,0cyclictest0-21swapper/023:47:310
81500,0rcu_preempt19-21ksoftirqd/121:02:311
81500,0rcu_preempt19-21ksoftirqd/121:02:311
10050500,0irq/346-48484009120-1kworker/1:2H23:03:271
81490,0rcu_preempt5816-21apt-get20:02:241
81490,0rcu_preempt19-21ksoftirqd/120:32:271
2002699491,0cyclictest54-21kswapd020:04:180
81480,0rcu_preempt4656-21ping20:10:410
2002699486,0cyclictest0-21swapper/023:00:110
2002699482,0cyclictest0-21swapper/021:20:520
81470,0rcu_preempt5259-21kworker/0:219:59:280
81470,0rcu_preempt19-21ksoftirqd/119:02:291
10050470,0irq/346-484840054-21kswapd023:42:320
10050470,0irq/346-484840054-21kswapd023:42:320
10050470,0irq/346-484840015098-21ssh21:27:311
81460,0rcu_preempt9669-21ssh21:54:141
10050460,0irq/346-484840054-21kswapd019:46:211
10050460,0irq/346-484840054-21kswapd019:46:211
10050460,0irq/346-484840019102-21munin-node0
2002699453,0cyclictest0-21swapper/020:22:070
81440,0rcu_preempt3-21ksoftirqd/022:41:410
81440,0rcu_preempt3-21ksoftirqd/020:27:160
20026994312,0cyclictest0-21swapper/019:56:370
9950420,0irq/345-484840023310-21ping19:22:371
81420,0rcu_preempt3-21ksoftirqd/020:34:540
81420,0rcu_preempt3-21ksoftirqd/019:12:100
81420,0rcu_preempt19-21ksoftirqd/123:53:201
81420,0rcu_preempt19-21ksoftirqd/121:42:271
81420,0rcu_preempt19-21ksoftirqd/120:07:371
81420,0rcu_preempt19-21ksoftirqd/120:00:031
81410,0rcu_preempt3-21ksoftirqd/021:04:050
81410,0rcu_preempt3-21ksoftirqd/021:04:050
81410,0rcu_preempt3-21ksoftirqd/020:42:180
81410,0rcu_preempt3-21ksoftirqd/020:37:220
81410,0rcu_preempt3-21ksoftirqd/019:14:090
81410,0rcu_preempt22282-21kworker/0:021:38:490
81410,0rcu_preempt19-21ksoftirqd/119:27:421
81410,0rcu_preempt19-21ksoftirqd/100:17:291
81410,0rcu_preempt19-21ksoftirqd/100:17:291
81410,0rcu_preempt0-21swapper/120:37:301
81400,0rcu_preempt3-21ksoftirqd/022:12:480
81400,0rcu_preempt3-21ksoftirqd/020:48:290
81400,0rcu_preempt3-21ksoftirqd/000:02:450
81400,0rcu_preempt21275-21ntp_states20:47:381
81400,0rcu_preempt19-21ksoftirqd/123:22:181
5150400,0irq/332-480700054-21kswapd023:37:510
81390,0rcu_preempt19-21ksoftirqd/121:02:151
81390,0rcu_preempt19-21ksoftirqd/119:47:361
81390,0rcu_preempt14491-21ssh21:59:011
81390,0rcu_preempt0-21swapper/021:01:080
10050390,0irq/346-484840016824-21df_abs00:12:281
81380,0rcu_preempt2720-21df_inode19:52:291
81380,0rcu_preempt22958-21ps20:52:391
81360,0rcu_preempt19-21ksoftirqd/119:07:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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