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2026-04-22 - 03:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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  Eltec
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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 rack3slot5s.osadl.org (updated Wed Apr 22, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
148521120sleep1121550irq/30-eth0_g0_00:11:451
1211120ksoftirqd/1121550irq/30-eth0_g0_23:41:541
338521000sleep0121450irq/29-eth0_g0_00:29:560
121920ksoftirqd/1121450irq/29-eth0_g0_23:56:400
121710ksoftirqd/1150002sleep021:05:350
203822590sleep0121550irq/30-eth0_g0_21:59:010
121510ksoftirqd/1121550irq/30-eth0_g0_20:24:460
6952500sleep1121450irq/29-eth0_g0_00:04:391
121500ksoftirqd/1121450irq/29-eth0_g0_22:03:370
272012490sleep0121450irq/29-eth0_g0_23:05:330
121460ksoftirqd/1121550irq/30-eth0_g0_23:19:421
121460ksoftirqd/1121450irq/29-eth0_g0_23:58:421
279632450sleep0121450irq/29-eth0_g0_23:13:300
121450ksoftirqd/1121550irq/30-eth0_g0_00:26:071
121450ksoftirqd/1121550irq/30-eth0_g0_00:26:071
121450440irq/29-eth0_g0_121ksoftirqd/123:23:101
121440ksoftirqd/1121550irq/30-eth0_g0_21:17:541
121550430irq/30-eth0_g0_1221-21kworker/1:222:45:031
121550430irq/30-eth0_g0_1221-21kworker/1:221:14:051
121550430irq/30-eth0_g0_1221-21kworker/1:200:17:511
121450430irq/29-eth0_g0_1911-21runrttasks23:25:100
121450430irq/29-eth0_g0_1911-21runrttasks23:25:100
121450430irq/29-eth0_g0_121ksoftirqd/100:39:020
121430ksoftirqd/1121550irq/30-eth0_g0_23:48:501
121430ksoftirqd/1121450irq/29-eth0_g0_22:26:570
121430ksoftirqd/1121450irq/29-eth0_g0_20:44:471
121550420irq/30-eth0_g0_121ksoftirqd/121:37:281
121450420irq/29-eth0_g0_1911-21runrttasks20:39:080
121420ksoftirqd/1121450irq/29-eth0_g0_22:30:111
198842410sleep1121450irq/29-eth0_g0_21:54:091
121550410irq/30-eth0_g0_40802sleep100:37:051
121550410irq/30-eth0_g0_256712sleep122:50:321
121550410irq/30-eth0_g0_121ksoftirqd/121:56:261
121450410irq/29-eth0_g0_31ksoftirqd/023:40:060
121450410irq/29-eth0_g0_13-21kworker/0:122:09:160
121410ksoftirqd/1121550irq/30-eth0_g0_22:55:440
121410ksoftirqd/1121550irq/30-eth0_g0_21:19:440
121550400irq/30-eth0_g0_321342sleep123:54:421
121550400irq/30-eth0_g0_1221-21kworker/1:222:57:541
121550400irq/30-eth0_g0_1221-21kworker/1:200:05:011
121550400irq/30-eth0_g0_121ksoftirqd/123:27:181
121550400irq/30-eth0_g0_121ksoftirqd/123:27:181
121550400irq/30-eth0_g0_121ksoftirqd/121:32:571
121450400irq/29-eth0_g0_1911-21runrttasks00:17:090
121450400irq/29-eth0_g0_13-21kworker/0:123:36:170
121450400irq/29-eth0_g0_13-21kworker/0:121:50:230
121400ksoftirqd/1121550irq/30-eth0_g0_19:40:040
121400ksoftirqd/1121550irq/30-eth0_g0_00:03:560
121400ksoftirqd/1121450irq/29-eth0_g0_22:39:030
314199391cyclictest4215-21cat19:19:471
121550390irq/30-eth0_g0_121ksoftirqd/122:20:071
121550390irq/30-eth0_g0_121ksoftirqd/121:42:101
121550390irq/30-eth0_g0_0-21swapper/122:05:061
121450390irq/29-eth0_g0_22035-21ls22:14:470
121450390irq/29-eth0_g0_1911-21runrttasks23:49:490
121450390irq/29-eth0_g0_1911-21runrttasks22:54:140
121450390irq/29-eth0_g0_13-21kworker/0:123:22:270
121450390irq/29-eth0_g0_13-21kworker/0:123:19:470
121450390irq/29-eth0_g0_13-21kworker/0:123:01:470
121450390irq/29-eth0_g0_13-21kworker/0:122:47:100
121450390irq/29-eth0_g0_13-21kworker/0:121:37:220
121450390irq/29-eth0_g0_121ksoftirqd/121:13:500
121390ksoftirqd/1121550irq/30-eth0_g0_22:44:240
121390ksoftirqd/1121550irq/30-eth0_g0_22:44:240
121390ksoftirqd/1121550irq/30-eth0_g0_22:21:070
121390ksoftirqd/1121550irq/30-eth0_g0_21:31:430
121390ksoftirqd/1121450irq/29-eth0_g0_22:39:141
121390ksoftirqd/1121450irq/29-eth0_g0_22:03:011
121390ksoftirqd/1121450irq/29-eth0_g0_00:23:590
121550380irq/30-eth0_g0_1221-21kworker/1:223:31:541
121550380irq/30-eth0_g0_1221-21kworker/1:222:17:001
121550380irq/30-eth0_g0_1221-21kworker/1:222:11:031
121550380irq/30-eth0_g0_1221-21kworker/1:221:22:381
121550380irq/30-eth0_g0_1221-21kworker/1:200:22:011
121550380irq/30-eth0_g0_121ksoftirqd/123:05:341
121550380irq/30-eth0_g0_121ksoftirqd/122:43:061
121550380irq/30-eth0_g0_121ksoftirqd/122:43:061
121450380irq/29-eth0_g0_314099cyclictest21:21:330
121450380irq/29-eth0_g0_13-21kworker/0:123:46:000
121450380irq/29-eth0_g0_13-21kworker/0:122:19:090
121450380irq/29-eth0_g0_121ksoftirqd/123:11:491
121450380irq/29-eth0_g0_0-21swapper/019:04:540
121380ksoftirqd/1121550irq/30-eth0_g0_23:34:220
121380ksoftirqd/1121550irq/30-eth0_g0_22:31:320
121380ksoftirqd/1121450irq/29-eth0_g0_20:46:571
314199372cyclictest5687-21munin-run19:34:461
314199371cyclictest0-21swapper/119:38:491
121550370irq/30-eth0_g0_1221-21kworker/1:223:01:511
121550370irq/30-eth0_g0_1221-21kworker/1:200:33:351
121550370irq/30-eth0_g0_121ksoftirqd/121:25:151
121450370irq/29-eth0_g0_13-21kworker/0:121:47:280
121450370irq/29-eth0_g0_13-21kworker/0:121:47:280
121450370irq/29-eth0_g0_13-21kworker/0:121:43:310
121450370irq/29-eth0_g0_13-21kworker/0:100:12:010
121450370irq/29-eth0_g0_13-21kworker/0:100:07:060
121450370irq/29-eth0_g0_121ksoftirqd/119:55:111
314199361cyclictest0-21swapper/120:32:431
314199361cyclictest0-21swapper/119:53:571
121550360irq/30-eth0_g0_13-21kworker/0:100:27:530
121550360irq/30-eth0_g0_13-21kworker/0:100:27:530
121550360irq/30-eth0_g0_1221-21kworker/1:221:49:021
121550360irq/30-eth0_g0_1221-21kworker/1:221:49:021
121550360irq/30-eth0_g0_121ksoftirqd/122:28:021
121450360irq/29-eth0_g0_6258-21sort19:39:470
121450360irq/29-eth0_g0_5209-21cat19:29:470
121450360irq/29-eth0_g0_1911-21runrttasks20:58:140
121360ksoftirqd/1121550irq/30-eth0_g0_21:29:410
314199351cyclictest0-21swapper/120:20:131
314199351cyclictest0-21swapper/120:14:121
314199351cyclictest0-21swapper/120:14:121
314199351cyclictest0-21swapper/119:46:381
123292350sleep10-21swapper/120:39:461
121550350irq/30-eth0_g0_0-21swapper/123:37:181
121450350irq/29-eth0_g0_7735-21latency_hist19:54:460
121450350irq/29-eth0_g0_1911-21runrttasks20:28:291
121450350irq/29-eth0_g0_0-21swapper/020:04:460
314199341cyclictest5234-21cat19:29:471
314199341cyclictest14876-21chrt21:04:461
121550340irq/30-eth0_g0_1911-21runrttasks20:42:310
121550340irq/30-eth0_g0_1911-21runrttasks19:05:421
121450340irq/29-eth0_g0_8232-21munin-run19:59:460
121450340irq/29-eth0_g0_1911-21runrttasks20:54:340
121450340irq/29-eth0_g0_13330-21cat20:49:460
121450340irq/29-eth0_g0_10937-21runrttasks20:25:430
314199331cyclictest0-21swapper/120:51:201
314199331cyclictest0-21swapper/120:06:201
314199331cyclictest0-21swapper/120:06:201
314199331cyclictest0-21swapper/120:02:191
314199331cyclictest0-21swapper/119:43:471
314199331cyclictest0-21swapper/119:24:121
121450330irq/29-eth0_g0_1911-21runrttasks21:01:140
314199321cyclictest0-21swapper/120:15:061
314199321cyclictest0-21swapper/119:13:401
121450320irq/29-eth0_g0_6801-21runrttasks19:44:590
121450320irq/29-eth0_g0_3221-21runrttasks19:09:490
121450320irq/29-eth0_g0_0-21swapper/020:32:320
121450320irq/29-eth0_g0_0-21swapper/020:19:290
121450320irq/29-eth0_g0_0-21swapper/020:10:340
121450320irq/29-eth0_g0_0-21swapper/020:10:340
121450320irq/29-eth0_g0_0-21swapper/019:17:390
121320ksoftirqd/1121550irq/30-eth0_g0_20:04:580
121320ksoftirqd/1121550irq/30-eth0_g0_20:04:580
121320ksoftirqd/1121450irq/29-eth0_g0_21:06:391
314199311cyclictest0-21swapper/120:55:531
121450310irq/29-eth0_g0_0-21swapper/019:34:270
121450300irq/29-eth0_g0_0-21swapper/019:20:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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