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2026-04-25 - 13:38

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Sat Apr 25, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269072880sleep0121550irq/30-eth0_g0_00:13:020
243352760sleep1121550irq/30-eth0_g0_23:47:411
243352760sleep1121550irq/30-eth0_g0_23:47:411
194272730sleep1121550irq/30-eth0_g0_22:59:391
162492660chrt121450irq/29-eth0_g0_22:28:070
121560ksoftirqd/1121550irq/30-eth0_g0_23:42:151
121520ksoftirqd/1121550irq/30-eth0_g0_23:29:001
121550490irq/30-eth0_g0_1221-21kworker/1:221:59:401
121480ksoftirqd/1121550irq/30-eth0_g0_22:36:531
121480ksoftirqd/1121550irq/30-eth0_g0_00:11:371
126562470sleep0121450irq/29-eth0_g0_21:52:430
121470ksoftirqd/1121550irq/30-eth0_g0_23:19:000
121470ksoftirqd/1121550irq/30-eth0_g0_21:33:101
121470ksoftirqd/1121450irq/29-eth0_g0_20:50:581
121460ksoftirqd/1121450irq/29-eth0_g0_23:08:451
121450ksoftirqd/1121550irq/30-eth0_g0_00:02:530
121550440irq/30-eth0_g0_1221-21kworker/1:223:51:481
121550440irq/30-eth0_g0_1221-21kworker/1:223:31:201
121550440irq/30-eth0_g0_1221-21kworker/1:221:15:081
121440ksoftirqd/1121550irq/30-eth0_g0_21:35:500
121440ksoftirqd/1121550irq/30-eth0_g0_00:33:011
121440ksoftirqd/1121450irq/29-eth0_g0_23:17:301
121550430irq/30-eth0_g0_1221-21kworker/1:222:25:361
121550430irq/30-eth0_g0_1221-21kworker/1:222:20:041
121550430irq/30-eth0_g0_1221-21kworker/1:200:24:351
121550430irq/30-eth0_g0_1221-21kworker/1:200:18:501
121550430irq/30-eth0_g0_1221-21kworker/1:200:02:051
121450430irq/29-eth0_g0_31ksoftirqd/019:44:390
121450430irq/29-eth0_g0_28486-21latencyplot19:09:400
121450430irq/29-eth0_g0_16946-21latency_hist22:34:400
121430ksoftirqd/1121550irq/30-eth0_g0_23:57:581
121550420irq/30-eth0_g0_0-21swapper/122:32:041
121420ksoftirqd/1121550irq/30-eth0_g0_22:03:371
121420ksoftirqd/1117450irq/72-mmc020:22:311
121550410irq/30-eth0_g0_121ksoftirqd/121:13:441
121550410irq/30-eth0_g0_121ksoftirqd/121:13:441
121450410irq/29-eth0_g0_121ksoftirqd/123:20:220
121410ksoftirqd/1121450irq/29-eth0_g0_23:35:571
121550400irq/30-eth0_g0_1221-21kworker/1:200:35:181
121550400irq/30-eth0_g0_121ksoftirqd/121:36:291
121450400irq/29-eth0_g0_2849199cyclictest23:57:460
121450400irq/29-eth0_g0_2849199cyclictest22:17:080
121450400irq/29-eth0_g0_2849199cyclictest22:17:080
121450400irq/29-eth0_g0_13-21kworker/0:121:59:410
121450400irq/29-eth0_g0_121ksoftirqd/123:11:070
121400ksoftirqd/1121450irq/29-eth0_g0_22:45:021
121400ksoftirqd/1121450irq/29-eth0_g0_20:54:431
121550390irq/30-eth0_g0_28484-21sh19:09:401
121550390irq/30-eth0_g0_14308-21seq22:09:101
121550390irq/30-eth0_g0_1221-21kworker/1:223:03:171
121450390irq/29-eth0_g0_2849199cyclictest23:38:180
121450390irq/29-eth0_g0_13-21kworker/0:123:51:120
121450390irq/29-eth0_g0_13-21kworker/0:121:23:450
121390ksoftirqd/1121450irq/29-eth0_g0_23:01:240
121390ksoftirqd/1121450irq/29-eth0_g0_22:40:271
121390ksoftirqd/1121450irq/29-eth0_g0_21:20:251
121390ksoftirqd/1121450irq/29-eth0_g0_20:43:371
121390ksoftirqd/1121450irq/29-eth0_g0_20:36:451
121550380irq/30-eth0_g0_1221-21kworker/1:223:20:071
121550380irq/30-eth0_g0_1221-21kworker/1:222:10:151
121550380irq/30-eth0_g0_1221-21kworker/1:221:52:281
121550380irq/30-eth0_g0_0-21swapper/121:44:561
121450380irq/29-eth0_g0_13-21kworker/0:123:47:190
121450380irq/29-eth0_g0_13-21kworker/0:123:47:190
121450380irq/29-eth0_g0_13-21kworker/0:123:33:270
121450380irq/29-eth0_g0_13-21kworker/0:123:26:070
121450380irq/29-eth0_g0_13-21kworker/0:122:10:110
121450380irq/29-eth0_g0_13-21kworker/0:121:44:470
121450380irq/29-eth0_g0_13-21kworker/0:121:13:520
121450380irq/29-eth0_g0_13-21kworker/0:121:13:520
121450380irq/29-eth0_g0_13-21kworker/0:100:38:180
121450380irq/29-eth0_g0_13-21kworker/0:100:23:480
121380ksoftirqd/1121550irq/30-eth0_g0_22:37:580
121380ksoftirqd/1121450irq/29-eth0_g0_20:29:061
121380ksoftirqd/1121450irq/29-eth0_g0_20:16:281
121380ksoftirqd/1121450irq/29-eth0_g0_19:52:421
121380ksoftirqd/1121450irq/29-eth0_g0_19:46:061
121380ksoftirqd/1121450irq/29-eth0_g0_00:07:530
274302370sleep0121450irq/29-eth0_g0_00:18:140
121550370irq/30-eth0_g0_1221-21kworker/1:223:13:021
121550370irq/30-eth0_g0_1221-21kworker/1:222:50:561
121550370irq/30-eth0_g0_1221-21kworker/1:221:24:591
121550370irq/30-eth0_g0_1221-21kworker/1:200:28:021
121550370irq/30-eth0_g0_1221-21kworker/1:200:08:381
121450370irq/29-eth0_g0_9114-21seq21:17:450
121450370irq/29-eth0_g0_31ksoftirqd/023:05:300
121450370irq/29-eth0_g0_31ksoftirqd/022:09:310
121450370irq/29-eth0_g0_17619-21seq22:41:240
121370ksoftirqd/1121450irq/29-eth0_g0_21:03:311
121450360irq/29-eth0_g0_31ksoftirqd/022:21:370
121450360irq/29-eth0_g0_31ksoftirqd/021:40:520
121450360irq/29-eth0_g0_1911-21runrttasks00:27:510
121450360irq/29-eth0_g0_13-21kworker/0:122:57:060
121450360irq/29-eth0_g0_13-21kworker/0:122:53:350
121450360irq/29-eth0_g0_13-21kworker/0:100:32:530
121450360irq/29-eth0_g0_121ksoftirqd/122:16:281
121450360irq/29-eth0_g0_121ksoftirqd/122:16:281
121360ksoftirqd/1121450irq/29-eth0_g0_21:04:431
121550350irq/30-eth0_g0_30076-21taskset19:24:411
121550350irq/30-eth0_g0_0-21swapper/121:42:471
121450350irq/29-eth0_g0_8275-21latency_hist21:09:400
121450350irq/29-eth0_g0_659-21latency_hist19:54:400
121450350irq/29-eth0_g0_13-21kworker/0:121:58:320
121450350irq/29-eth0_g0_13-21kworker/0:121:28:400
121450350irq/29-eth0_g0_121ksoftirqd/122:45:040
121350ksoftirqd/1121450irq/29-eth0_g0_19:34:401
121450340irq/29-eth0_g0_5777-21latency_hist20:44:400
121450340irq/29-eth0_g0_1911-21runrttasks20:32:010
121450340irq/29-eth0_g0_13-21kworker/0:123:42:490
121450340irq/29-eth0_g0_1198-21sed19:59:400
121340ksoftirqd/14575-21taskset20:33:091
121340ksoftirqd/1121450irq/29-eth0_g0_19:57:131
2849299331cyclictest32065-21date19:44:401
2849299331cyclictest1241-21sshd20:00:031
121450330irq/29-eth0_g0_28661-21runrttasks19:10:450
121450330irq/29-eth0_g0_0-21swapper/020:19:400
121450330irq/29-eth0_g0_0-21swapper/020:14:400
121330ksoftirqd/1121550irq/30-eth0_g0_21:32:080
121550320irq/30-eth0_g0_1911-21runrttasks21:02:340
121450320irq/29-eth0_g0_30361-21runrttasks19:27:540
121450320irq/29-eth0_g0_30361-21runrttasks19:27:540
121450320irq/29-eth0_g0_0-21swapper/019:24:410
121320ksoftirqd/1121550irq/30-eth0_g0_19:35:110
2849299311cyclictest0-21swapper/119:26:201
2849299311cyclictest0-21swapper/119:26:201
2849299311cyclictest0-21swapper/119:17:581
121550310irq/30-eth0_g0_4196-21latency_hist20:29:400
121550310irq/30-eth0_g0_1911-21runrttasks20:37:520
121550310irq/30-eth0_g0_0-21swapper/120:11:151
121450310irq/29-eth0_g0_7250-21wc20:59:400
121450310irq/29-eth0_g0_0-21swapper/020:54:400
2849299300cyclictest0-21swapper/120:07:541
2849299300cyclictest0-21swapper/119:10:121
121450300irq/29-eth0_g0_29400-21runrttasks19:18:310
121450300irq/29-eth0_g0_1804-21taskset20:05:400
121450300irq/29-eth0_g0_0-21swapper/020:45:010
121450300irq/29-eth0_g0_0-21swapper/020:02:020
121450300irq/29-eth0_g0_0-21swapper/019:49:400
2849299291cyclictest0-21swapper/119:34:441
121450290irq/29-eth0_g0_1911-21runrttasks20:22:160
121450290irq/29-eth0_g0_0-21swapper/019:30:030
2849299280cyclictest0-21swapper/120:45:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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