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2026-04-27 - 21:36

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 Mon Apr 27, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1627821290sleep1121450irq/29-eth0_g0_11:20:201
954321140chrt121550irq/30-eth0_g0_10:14:250
738421140sleep1121450irq/29-eth0_g0_09:52:501
133702880sleep0121550irq/30-eth0_g0_10:51:530
226692600sleep1121450irq/29-eth0_g0_12:24:071
254392590sleep1121550irq/30-eth0_g0_07:30:161
121550ksoftirqd/1121550irq/30-eth0_g0_10:00:041
121550ksoftirqd/1121450irq/29-eth0_g0_09:38:140
234522530sleep1121550irq/30-eth0_g0_12:31:211
121530ksoftirqd/1121550irq/30-eth0_g0_10:16:180
121530ksoftirqd/1121550irq/30-eth0_g0_09:55:441
179502510sleep0121450irq/29-eth0_g0_11:37:090
121500ksoftirqd/1121550irq/30-eth0_g0_12:09:340
121450490irq/29-eth0_g0_121ksoftirqd/109:56:350
121490ksoftirqd/1121550irq/30-eth0_g0_12:28:301
121490ksoftirqd/1121550irq/30-eth0_g0_12:28:301
121490ksoftirqd/1121550irq/30-eth0_g0_11:12:341
121470ksoftirqd/1121550irq/30-eth0_g0_10:33:331
121470ksoftirqd/1121450irq/29-eth0_g0_09:46:260
121550460irq/30-eth0_g0_1221-21kworker/1:211:59:181
121460ksoftirqd/1121550irq/30-eth0_g0_12:39:251
121460ksoftirqd/1121550irq/30-eth0_g0_11:53:251
121460ksoftirqd/1121550irq/30-eth0_g0_10:49:181
121460ksoftirqd/1121550irq/30-eth0_g0_10:02:500
121460ksoftirqd/1121450irq/29-eth0_g0_11:17:331
121550450irq/30-eth0_g0_1221-21kworker/1:209:19:241
121550450irq/30-eth0_g0_1221-21kworker/1:209:19:241
121450ksoftirqd/1121550irq/30-eth0_g0_10:51:151
121450ksoftirqd/1121550irq/30-eth0_g0_09:10:361
189832440sleep0121550irq/30-eth0_g0_11:47:240
121440ksoftirqd/1121550irq/30-eth0_g0_11:31:000
121440ksoftirqd/1121550irq/30-eth0_g0_10:19:071
121440ksoftirqd/1121550irq/30-eth0_g0_10:05:321
121430ksoftirqd/1121550irq/30-eth0_g0_10:27:331
121450420irq/29-eth0_g0_13-21kworker/0:109:44:100
121450420irq/29-eth0_g0_13-21kworker/0:109:22:040
121420ksoftirqd/1121550irq/30-eth0_g0_10:30:400
121550410irq/30-eth0_g0_1221-21kworker/1:211:33:451
121550410irq/30-eth0_g0_121ksoftirqd/109:48:411
121550410irq/30-eth0_g0_0-21swapper/112:12:411
121450410irq/29-eth0_g0_31ksoftirqd/010:40:320
121450400irq/29-eth0_g0_1911-21runrttasks12:14:510
121450400irq/29-eth0_g0_13-21kworker/0:112:30:260
121450400irq/29-eth0_g0_13-21kworker/0:110:36:060
121450400irq/29-eth0_g0_121ksoftirqd/112:13:310
121450400irq/29-eth0_g0_0-21swapper/011:19:320
121400ksoftirqd/1121550irq/30-eth0_g0_09:07:000
121550390irq/30-eth0_g0_121ksoftirqd/111:29:311
121550390irq/30-eth0_g0_121ksoftirqd/109:25:221
121450390irq/29-eth0_g0_31ksoftirqd/011:05:410
121450390irq/29-eth0_g0_31ksoftirqd/011:05:410
121450390irq/29-eth0_g0_1911-21runrttasks11:42:360
121450390irq/29-eth0_g0_1911-21runrttasks08:20:061
121450390irq/29-eth0_g0_13-21kworker/0:112:00:390
121450390irq/29-eth0_g0_13-21kworker/0:111:51:110
121390ksoftirqd/1121550irq/30-eth0_g0_11:40:161
121390ksoftirqd/1121550irq/30-eth0_g0_11:10:050
121390ksoftirqd/1121550irq/30-eth0_g0_10:48:300
121390ksoftirqd/1121550irq/30-eth0_g0_09:32:100
121390ksoftirqd/1121550irq/30-eth0_g0_09:26:310
121390ksoftirqd/1121550irq/30-eth0_g0_07:49:430
121390ksoftirqd/1121550irq/30-eth0_g0_07:38:190
121390ksoftirqd/1121550irq/30-eth0_g0_07:30:180
121390ksoftirqd/1121550irq/30-eth0_g0_07:10:340
121390ksoftirqd/1121450irq/29-eth0_g0_11:07:541
121390ksoftirqd/1121450irq/29-eth0_g0_11:07:541
121390ksoftirqd/1121450irq/29-eth0_g0_10:42:071
117450390irq/72-mmc0121ksoftirqd/108:10:461
121550380irq/30-eth0_g0_1221-21kworker/1:211:38:131
121550380irq/30-eth0_g0_121ksoftirqd/110:56:021
121550380irq/30-eth0_g0_121ksoftirqd/110:12:211
121550380irq/30-eth0_g0_0-21swapper/112:03:261
121450380irq/29-eth0_g0_1911-21runrttasks07:05:400
121450380irq/29-eth0_g0_14217-21taskset10:59:550
121450380irq/29-eth0_g0_13-21kworker/0:112:35:330
121450380irq/29-eth0_g0_13-21kworker/0:110:24:500
121450380irq/29-eth0_g0_121ksoftirqd/110:21:120
121380ksoftirqd/1121550irq/30-eth0_g0_11:26:040
121380ksoftirqd/1121550irq/30-eth0_g0_11:20:590
121380ksoftirqd/1121550irq/30-eth0_g0_09:11:220
121380ksoftirqd/1121450irq/29-eth0_g0_08:16:231
23287993731cyclictest1911-21runrttasks08:25:311
121550370irq/30-eth0_g0_1221-21kworker/1:211:48:461
121550370irq/30-eth0_g0_1221-21kworker/1:211:00:241
121550370irq/30-eth0_g0_1221-21kworker/1:210:36:501
121550370irq/30-eth0_g0_121ksoftirqd/110:20:231
121550370irq/30-eth0_g0_121ksoftirqd/109:30:581
121550370irq/30-eth0_g0_121ksoftirqd/109:20:081
121550370irq/30-eth0_g0_0-21swapper/112:15:351
121450370irq/29-eth0_g0_8632-21seq10:04:420
121450370irq/29-eth0_g0_31ksoftirqd/011:55:180
121450370irq/29-eth0_g0_1911-21runrttasks09:49:550
121450370irq/29-eth0_g0_0-21swapper/007:55:160
121370ksoftirqd/1121550irq/30-eth0_g0_07:43:151
121370ksoftirqd/1121450irq/29-eth0_g0_09:04:131
121550360irq/30-eth0_g0_1221-21kworker/1:212:05:461
121550360irq/30-eth0_g0_1221-21kworker/1:209:34:381
121450360irq/29-eth0_g0_31ksoftirqd/012:19:360
121450360irq/29-eth0_g0_2485-21latency_hist09:04:340
121450360irq/29-eth0_g0_1911-21runrttasks09:15:200
121450360irq/29-eth0_g0_1911-21runrttasks09:15:200
121450360irq/29-eth0_g0_1911-21runrttasks08:48:220
121450360irq/29-eth0_g0_1911-21runrttasks08:01:430
121450360irq/29-eth0_g0_13-21kworker/0:112:24:490
121450360irq/29-eth0_g0_13-21kworker/0:112:24:490
121450360irq/29-eth0_g0_0-21swapper/010:59:170
121360ksoftirqd/1121550irq/30-eth0_g0_09:41:381
121360ksoftirqd/1121450irq/29-eth0_g0_08:09:201
23287993529cyclictest1911-21runrttasks08:45:011
2328799352cyclictest275712sleep107:51:341
2328799351cyclictest0-21swapper/108:31:561
121450350irq/29-eth0_g0_425-21sort08:44:340
121450350irq/29-eth0_g0_31911-21sort08:34:350
121450350irq/29-eth0_g0_23329-21cut07:09:341
121450350irq/29-eth0_g0_1911-21runrttasks08:55:070
121450350irq/29-eth0_g0_1911-21runrttasks08:04:490
121450350irq/29-eth0_g0_1911-21runrttasks07:48:330
121450350irq/29-eth0_g0_1911-21runrttasks07:26:300
2328799341cyclictest1986-21latency_hist08:59:341
2328799341cyclictest0-21swapper/108:35:331
2328799341cyclictest0-21swapper/108:01:411
2328799341cyclictest0-21swapper/107:18:141
121450340irq/29-eth0_g0_1911-21runrttasks08:49:430
121450340irq/29-eth0_g0_1911-21runrttasks08:09:430
121450340irq/29-eth0_g0_1911-21runrttasks07:43:000
121450340irq/29-eth0_g0_1911-21runrttasks07:19:530
121550330irq/30-eth0_g0_2328799cyclictest07:48:321
121450330irq/29-eth0_g0_31352-21runrttasks08:29:230
121450330irq/29-eth0_g0_0-21swapper/008:24:340
23287993228cyclictest0-21swapper/108:44:191
2328799321cyclictest0-21swapper/109:04:371
121450320irq/29-eth0_g0_1911-21runrttasks08:18:180
121320ksoftirqd/123450-21taskset07:10:351
121320ksoftirqd/1121450irq/29-eth0_g0_08:52:261
2328799311cyclictest0-21swapper/107:55:581
2328799311cyclictest0-21swapper/107:24:521
2328799311cyclictest0-21swapper/107:20:381
121450310irq/29-eth0_g0_0-21swapper/007:16:460
121450300irq/29-eth0_g0_25907-21runrttasks07:34:471
121450300irq/29-eth0_g0_0-21swapper/008:36:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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