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2026-04-28 - 10:25

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 Tue Apr 28, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211722820sleep1121450irq/29-eth0_g0_22:11:581
121530ksoftirqd/1121450irq/29-eth0_g0_00:04:010
268582520sleep0121550irq/30-eth0_g0_23:08:000
322502510sleep1121550irq/30-eth0_g0_00:00:371
121510ksoftirqd/1121550irq/30-eth0_g0_22:55:391
121490ksoftirqd/1121550irq/30-eth0_g0_21:46:071
9102470sleep0121450irq/29-eth0_g0_00:11:430
9102470sleep0121450irq/29-eth0_g0_00:11:430
121470ksoftirqd/1121550irq/30-eth0_g0_20:37:531
121450450irq/29-eth0_g0_13-21kworker/0:122:08:370
121550430irq/30-eth0_g0_1221-21kworker/1:222:45:161
121550430irq/30-eth0_g0_1221-21kworker/1:222:08:551
121550430irq/30-eth0_g0_1221-21kworker/1:200:08:501
121450430irq/29-eth0_g0_31ksoftirqd/023:59:130
121450430irq/29-eth0_g0_31ksoftirqd/000:19:320
121450430irq/29-eth0_g0_21139-21taskset22:11:350
121450430irq/29-eth0_g0_13-21kworker/0:121:54:360
121450430irq/29-eth0_g0_13-21kworker/0:121:35:360
121430ksoftirqd/1121550irq/30-eth0_g0_21:46:050
121550420irq/30-eth0_g0_1221-21kworker/1:222:42:041
121450420irq/29-eth0_g0_31ksoftirqd/021:54:070
121450420irq/29-eth0_g0_13-21kworker/0:122:52:500
121450420irq/29-eth0_g0_13-21kworker/0:121:14:560
121450420irq/29-eth0_g0_13-21kworker/0:121:09:480
121450420irq/29-eth0_g0_13-21kworker/0:100:22:180
121450410irq/29-eth0_g0_31ksoftirqd/023:42:000
121450410irq/29-eth0_g0_1911-21runrttasks21:30:290
121450410irq/29-eth0_g0_13-21kworker/0:123:17:390
121450410irq/29-eth0_g0_13-21kworker/0:122:55:190
121450410irq/29-eth0_g0_13-21kworker/0:122:40:320
121450410irq/29-eth0_g0_13-21kworker/0:122:32:030
121450410irq/29-eth0_g0_13-21kworker/0:122:32:030
121450410irq/29-eth0_g0_13-21kworker/0:122:21:480
121450410irq/29-eth0_g0_13-21kworker/0:122:15:170
121450410irq/29-eth0_g0_13-21kworker/0:121:25:130
121450410irq/29-eth0_g0_13-21kworker/0:100:28:460
121450410irq/29-eth0_g0_0-21swapper/019:05:130
121410ksoftirqd/1121450irq/29-eth0_g0_23:09:331
317922400sleep1121450irq/29-eth0_g0_23:56:141
121550400irq/30-eth0_g0_1221-21kworker/1:221:19:451
121450400irq/29-eth0_g0_31ksoftirqd/023:01:070
121450400irq/29-eth0_g0_174732sleep121:35:231
121450400irq/29-eth0_g0_13-21kworker/0:123:52:270
121450400irq/29-eth0_g0_13-21kworker/0:123:47:320
121450400irq/29-eth0_g0_13-21kworker/0:123:30:490
121450400irq/29-eth0_g0_13-21kworker/0:123:30:490
121450400irq/29-eth0_g0_13-21kworker/0:123:25:590
121450400irq/29-eth0_g0_13-21kworker/0:121:22:480
121450400irq/29-eth0_g0_13-21kworker/0:100:36:470
121450400irq/29-eth0_g0_13-21kworker/0:100:33:070
121400ksoftirqd/1121450irq/29-eth0_g0_19:48:211
121550390irq/30-eth0_g0_1221-21kworker/1:223:44:341
121450390irq/29-eth0_g0_13-21kworker/0:123:36:160
121450390irq/29-eth0_g0_13-21kworker/0:122:46:000
121450390irq/29-eth0_g0_13-21kworker/0:121:42:290
121390ksoftirqd/1121450irq/29-eth0_g0_21:13:021
121390ksoftirqd/1121450irq/29-eth0_g0_20:41:571
121390ksoftirqd/1121450irq/29-eth0_g0_19:44:141
121550380irq/30-eth0_g0_1221-21kworker/1:221:58:021
121550380irq/30-eth0_g0_121ksoftirqd/119:51:351
121550380irq/30-eth0_g0_0-21swapper/122:33:491
121550380irq/30-eth0_g0_0-21swapper/122:33:491
121450380irq/29-eth0_g0_1911-21runrttasks19:58:120
121450380irq/29-eth0_g0_13-21kworker/0:123:20:150
121450380irq/29-eth0_g0_13-21kworker/0:123:12:310
121450380irq/29-eth0_g0_13-21kworker/0:122:34:570
121450380irq/29-eth0_g0_13-21kworker/0:122:24:450
121450380irq/29-eth0_g0_13-21kworker/0:122:01:150
254052370sleep1121550irq/30-eth0_g0_22:53:521
121550370irq/30-eth0_g0_1221-21kworker/1:223:29:231
121550370irq/30-eth0_g0_1221-21kworker/1:222:18:591
121550370irq/30-eth0_g0_1221-21kworker/1:221:17:301
121450370irq/29-eth0_g0_23794-21runrttasks22:37:521
121450370irq/29-eth0_g0_1911-21runrttasks19:13:510
121450370irq/29-eth0_g0_0-21swapper/000:09:330
121550360irq/30-eth0_g0_3542-21chrt00:37:161
121550360irq/30-eth0_g0_1221-21kworker/1:223:49:531
121550360irq/30-eth0_g0_1221-21kworker/1:223:00:241
121550360irq/30-eth0_g0_1221-21kworker/1:221:41:171
121550360irq/30-eth0_g0_0-21swapper/122:24:151
121450360irq/29-eth0_g0_1911-21runrttasks20:47:220
121450360irq/29-eth0_g0_1911-21runrttasks20:38:500
121450360irq/29-eth0_g0_1911-21runrttasks20:28:480
121450360irq/29-eth0_g0_1911-21runrttasks20:28:480
121450360irq/29-eth0_g0_1911-21runrttasks20:15:520
121450360irq/29-eth0_g0_1911-21runrttasks19:52:090
121450360irq/29-eth0_g0_1911-21runrttasks19:27:250
121450360irq/29-eth0_g0_1911-21runrttasks19:22:210
121550350irq/30-eth0_g0_1221-21kworker/1:221:28:391
121550350irq/30-eth0_g0_1221-21kworker/1:200:34:121
121450350irq/29-eth0_g0_1911-21runrttasks21:06:220
121450350irq/29-eth0_g0_1911-21runrttasks21:00:030
121450350irq/29-eth0_g0_1911-21runrttasks20:55:430
121450350irq/29-eth0_g0_1911-21runrttasks20:39:470
121450350irq/29-eth0_g0_1911-21runrttasks20:34:320
121450350irq/29-eth0_g0_1911-21runrttasks20:20:090
121450350irq/29-eth0_g0_1911-21runrttasks19:41:550
121450350irq/29-eth0_g0_1911-21runrttasks19:30:000
121450350irq/29-eth0_g0_1911-21runrttasks19:14:480
121350ksoftirqd/12547-21munin-run19:09:321
121550340irq/30-eth0_g0_2566-21seq00:27:441
121550340irq/30-eth0_g0_1221-21kworker/1:223:35:461
121550340irq/30-eth0_g0_1221-21kworker/1:223:30:101
121550340irq/30-eth0_g0_1221-21kworker/1:223:30:101
121550340irq/30-eth0_g0_1221-21kworker/1:223:10:071
121550340irq/30-eth0_g0_1221-21kworker/1:222:24:471
121550340irq/30-eth0_g0_1221-21kworker/1:221:33:151
121550340irq/30-eth0_g0_1221-21kworker/1:200:13:541
121550340irq/30-eth0_g0_1221-21kworker/1:200:13:541
121550340irq/30-eth0_g0_10924-21taskset20:31:151
121550340irq/30-eth0_g0_0-21swapper/123:19:471
121550340irq/30-eth0_g0_0-21swapper/121:52:031
121450340irq/29-eth0_g0_1911-21runrttasks20:10:300
121450340irq/29-eth0_g0_1911-21runrttasks20:06:100
121450340irq/29-eth0_g0_1911-21runrttasks20:00:110
121450340irq/29-eth0_g0_1911-21runrttasks19:48:580
121550330irq/30-eth0_g0_1221-21kworker/1:223:18:501
121550330irq/30-eth0_g0_10665-21seq20:29:101
121550330irq/30-eth0_g0_10665-21seq20:29:101
121550330irq/30-eth0_g0_0-21swapper/122:02:511
121330ksoftirqd/12714-21taskset19:10:341
2550993211cyclictest0-21swapper/100:21:261
121550320irq/30-eth0_g0_0-21swapper/100:16:301
121320ksoftirqd/19529-21taskset20:17:471
2550993112cyclictest5609-21latency_hist19:39:331
121550310irq/30-eth0_g0_3879-21sshd19:22:161
121550310irq/30-eth0_g0_0-21swapper/119:34:331
121450310irq/29-eth0_g0_1972-21lldpd20:56:521
121550300irq/30-eth0_g0_13834-21taskset20:59:331
121550300irq/30-eth0_g0_1221-21kworker/1:223:39:471
121550300irq/30-eth0_g0_10229-21sort20:24:331
121550300irq/30-eth0_g0_0-21swapper/121:06:381
121550300irq/30-eth0_g0_0-21swapper/120:11:141
121550300irq/30-eth0_g0_0-21swapper/120:09:331
121450300irq/29-eth0_g0_8105-21runrttasks20:04:001
121450300irq/29-eth0_g0_1911-21runrttasks20:51:040
121300ksoftirqd/1121450irq/29-eth0_g0_19:28:311
121450290irq/29-eth0_g0_3145-21runrttasks19:14:401
121450290irq/29-eth0_g0_12420-21runrttasks20:45:531
121450290irq/29-eth0_g0_0-21swapper/019:35:090
121550280irq/30-eth0_g0_255099cyclictest19:58:311
121550280irq/30-eth0_g0_0-21swapper/120:50:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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