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2026-05-06 - 23:13

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 May 06, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121810ksoftirqd/1121550irq/30-eth0_g0_11:14:341
121810ksoftirqd/1121550irq/30-eth0_g0_09:55:591
319402700sleep1121450irq/29-eth0_g0_10:57:121
36252680sleep1121550irq/30-eth0_g0_11:37:541
36252680sleep1121550irq/30-eth0_g0_11:37:541
323782570sleep1121550irq/30-eth0_g0_11:01:251
121550ksoftirqd/1121550irq/30-eth0_g0_09:38:181
91352540sleep1121550irq/30-eth0_g0_12:32:111
121530ksoftirqd/1121550irq/30-eth0_g0_10:53:261
121520ksoftirqd/1886899cyclictest08:40:581
219742510sleep0121550irq/30-eth0_g0_09:18:530
121500ksoftirqd/1121550irq/30-eth0_g0_09:32:551
243642490chrt121550irq/30-eth0_g0_09:42:181
121450490irq/29-eth0_g0_44502sleep011:45:400
121490ksoftirqd/1121550irq/30-eth0_g0_12:34:491
121480ksoftirqd/1121550irq/30-eth0_g0_11:46:041
121550440irq/30-eth0_g0_1221-21kworker/1:209:50:231
121450440irq/29-eth0_g0_239112sleep009:37:530
121440ksoftirqd/1121550irq/30-eth0_g0_10:23:281
121440ksoftirqd/1121450irq/29-eth0_g0_12:13:290
121550430irq/30-eth0_g0_1221-21kworker/1:212:17:101
121550430irq/30-eth0_g0_1221-21kworker/1:209:45:311
121430ksoftirqd/1121550irq/30-eth0_g0_10:40:441
121430ksoftirqd/1121550irq/30-eth0_g0_10:40:441
121550420irq/30-eth0_g0_1221-21kworker/1:211:28:271
121550420irq/30-eth0_g0_1221-21kworker/1:211:05:341
121450420irq/29-eth0_g0_1911-21runrttasks07:07:580
121450420irq/29-eth0_g0_121ksoftirqd/112:39:130
121450420irq/29-eth0_g0_121ksoftirqd/109:49:270
121450420irq/29-eth0_g0_121ksoftirqd/109:46:020
121420ksoftirqd/1121450irq/29-eth0_g0_10:36:101
121450410irq/29-eth0_g0_31ksoftirqd/012:03:240
121450410irq/29-eth0_g0_31ksoftirqd/012:03:240
121450410irq/29-eth0_g0_1911-21runrttasks10:56:020
121450410irq/29-eth0_g0_121ksoftirqd/111:40:250
121450410irq/29-eth0_g0_121ksoftirqd/109:34:130
121450410irq/29-eth0_g0_121ksoftirqd/109:26:270
121450410irq/29-eth0_g0_121ksoftirqd/109:26:270
121410ksoftirqd/1121450irq/29-eth0_g0_12:06:381
121550400irq/30-eth0_g0_1221-21kworker/1:211:09:561
121550400irq/30-eth0_g0_121ksoftirqd/111:32:321
121450400irq/29-eth0_g0_886799cyclictest10:30:000
121450400irq/29-eth0_g0_13-21kworker/0:111:31:400
121450400irq/29-eth0_g0_121ksoftirqd/109:11:570
121550390irq/30-eth0_g0_1972-21lldpd10:17:201
121550390irq/30-eth0_g0_1221-21kworker/1:211:22:061
121550390irq/30-eth0_g0_1221-21kworker/1:210:45:241
121550390irq/30-eth0_g0_1221-21kworker/1:209:12:481
121550390irq/30-eth0_g0_121ksoftirqd/111:39:251
121450390irq/29-eth0_g0_31ksoftirqd/012:04:490
121450390irq/29-eth0_g0_13-21kworker/0:111:58:430
121450390irq/29-eth0_g0_13-21kworker/0:111:37:170
121450390irq/29-eth0_g0_13-21kworker/0:111:37:170
121450390irq/29-eth0_g0_13-21kworker/0:111:10:530
121450390irq/29-eth0_g0_13-21kworker/0:110:52:560
121450390irq/29-eth0_g0_13-21kworker/0:110:21:480
121450390irq/29-eth0_g0_13-21kworker/0:110:12:340
121450390irq/29-eth0_g0_13-21kworker/0:110:12:340
121390ksoftirqd/1121450irq/29-eth0_g0_12:04:131
121390ksoftirqd/1121450irq/29-eth0_g0_12:04:131
121390ksoftirqd/1121450irq/29-eth0_g0_09:19:210
121390ksoftirqd/1121450irq/29-eth0_g0_07:47:171
121550380irq/30-eth0_g0_1221-21kworker/1:209:21:541
121550380irq/30-eth0_g0_0-21swapper/111:58:531
121550380irq/30-eth0_g0_0-21swapper/109:14:581
121450380irq/29-eth0_g0_8866-21cyclictest07:11:400
121450380irq/29-eth0_g0_31ksoftirqd/012:25:330
121450380irq/29-eth0_g0_31ksoftirqd/012:22:340
121450380irq/29-eth0_g0_31ksoftirqd/011:28:000
121450380irq/29-eth0_g0_241852sleep009:40:110
121450380irq/29-eth0_g0_1911-21runrttasks09:09:060
121450380irq/29-eth0_g0_13-21kworker/0:112:32:140
121450380irq/29-eth0_g0_13-21kworker/0:112:16:010
121450380irq/29-eth0_g0_13-21kworker/0:110:27:520
121450380irq/29-eth0_g0_13-21kworker/0:110:06:570
121450380irq/29-eth0_g0_121ksoftirqd/110:39:540
121450380irq/29-eth0_g0_121ksoftirqd/110:39:540
121450380irq/29-eth0_g0_121ksoftirqd/110:16:360
121380ksoftirqd/1121450irq/29-eth0_g0_07:51:311
121550370irq/30-eth0_g0_13-21kworker/0:109:56:310
121550370irq/30-eth0_g0_1221-21kworker/1:212:20:011
121550370irq/30-eth0_g0_1221-21kworker/1:210:27:571
121450370irq/29-eth0_g0_31ksoftirqd/011:19:400
121450370irq/29-eth0_g0_13-21kworker/0:111:06:170
121450370irq/29-eth0_g0_13-21kworker/0:111:03:520
121450370irq/29-eth0_g0_13-21kworker/0:110:35:010
121450370irq/29-eth0_g0_13-21kworker/0:110:02:150
121370ksoftirqd/1121550irq/30-eth0_g0_11:49:541
121370ksoftirqd/1121450irq/29-eth0_g0_10:01:011
121370ksoftirqd/1121450irq/29-eth0_g0_08:28:531
121370ksoftirqd/1121450irq/29-eth0_g0_07:41:331
886899361cyclictest272882sleep110:10:581
886899361cyclictest272882sleep110:10:581
886899361cyclictest10391-21sed07:24:131
121550360irq/30-eth0_g0_1221-21kworker/1:212:28:421
121550360irq/30-eth0_g0_1221-21kworker/1:210:31:531
121550360irq/30-eth0_g0_1221-21kworker/1:210:08:521
121550360irq/30-eth0_g0_1221-21kworker/1:209:26:111
121550360irq/30-eth0_g0_1221-21kworker/1:209:26:111
121450360irq/29-eth0_g0_8739-21runrttasks07:07:521
121450360irq/29-eth0_g0_31ksoftirqd/011:52:370
121450360irq/29-eth0_g0_1911-21runrttasks10:44:180
121450360irq/29-eth0_g0_13-21kworker/0:111:18:090
886899351cyclictest15490-21sort08:14:131
886899351cyclictest0-21swapper/109:03:251
886899351cyclictest0-21swapper/108:29:141
121550350irq/30-eth0_g0_16471-21wc08:24:131
121450350irq/29-eth0_g0_1911-21runrttasks09:00:200
121450350irq/29-eth0_g0_1911-21runrttasks08:09:270
121450350irq/29-eth0_g0_1911-21runrttasks07:36:510
121450350irq/29-eth0_g0_1911-21runrttasks07:23:430
121450350irq/29-eth0_g0_19029-21cat08:49:150
886899342cyclictest0-21swapper/108:06:581
886899341cyclictest189812sleep108:49:151
886899341cyclictest0-21swapper/107:59:061
886899341cyclictest0-21swapper/107:37:551
886899341cyclictest0-21swapper/107:15:141
886899340cyclictest0-21swapper/112:11:011
121550340irq/30-eth0_g0_15939-21cat08:19:131
121450340irq/29-eth0_g0_31ksoftirqd/007:39:580
121450340irq/29-eth0_g0_1911-21runrttasks08:56:510
121450340irq/29-eth0_g0_1911-21runrttasks08:50:490
121450340irq/29-eth0_g0_1911-21runrttasks08:34:150
121450340irq/29-eth0_g0_1911-21runrttasks08:30:130
121450340irq/29-eth0_g0_1911-21runrttasks07:51:590
121450340irq/29-eth0_g0_16659-21sshd08:25:580
121450340irq/29-eth0_g0_13919-21latency_hist07:59:140
886899331cyclictest21025-21grep09:09:131
121450330irq/29-eth0_g0_1911-21runrttasks08:17:080
121450330irq/29-eth0_g0_16447-21sort08:24:130
121330ksoftirqd/114012-21taskset07:59:311
121450320irq/29-eth0_g0_1911-21runrttasks08:41:180
121450320irq/29-eth0_g0_14921-21munin-run08:09:130
886899312cyclictest0-21swapper/107:29:581
886899311cyclictest19522-21cat08:54:131
886899311cyclictest0-21swapper/108:38:591
886899311cyclictest0-21swapper/107:09:571
121450310irq/29-eth0_g0_1911-21runrttasks07:44:240
886899301cyclictest0-21swapper/108:54:201
121450300irq/29-eth0_g0_0-21swapper/007:34:130
121450300irq/29-eth0_g0_0-21swapper/007:15:590
121450290irq/29-eth0_g0_0-21swapper/008:02:210
121450290irq/29-eth0_g0_0-21swapper/007:26:180
121550280irq/30-eth0_g0_0-21swapper/107:28:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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