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2026-06-22 - 12:31

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 Mon Jun 22, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121710ksoftirqd/1121650irq/29-eth0_g0_21:54:070
267822700sleep0121650irq/29-eth0_g0_22:07:430
267822700sleep0121650irq/29-eth0_g0_22:07:430
121580ksoftirqd/1121750irq/30-eth0_g0_23:19:031
307152570sleep0121750irq/30-eth0_g0_00:34:100
121500ksoftirqd/1280292chrt22:12:570
121480ksoftirqd/1121750irq/30-eth0_g0_22:24:110
121480ksoftirqd/1121650irq/29-eth0_g0_19:19:091
121750460irq/30-eth0_g0_13994-21rt-features21:14:101
121650460irq/29-eth0_g0_1964-21runrttasks19:08:360
121750440irq/30-eth0_g0_1219-21kworker/1:200:36:371
121650440irq/29-eth0_g0_31ksoftirqd/022:29:450
121440ksoftirqd/1121650irq/29-eth0_g0_20:49:111
121440ksoftirqd/1121650irq/29-eth0_g0_20:49:111
121650430irq/29-eth0_g0_31ksoftirqd/023:59:560
121650430irq/29-eth0_g0_31ksoftirqd/021:19:090
121650430irq/29-eth0_g0_13-21kworker/0:122:35:090
121430ksoftirqd/1121750irq/30-eth0_g0_23:41:090
121430ksoftirqd/1121650irq/29-eth0_g0_20:39:091
121430ksoftirqd/1121650irq/29-eth0_g0_20:39:091
121750420irq/30-eth0_g0_1219-21kworker/1:200:31:191
121750420irq/30-eth0_g0_1219-21kworker/1:200:12:341
121650420irq/29-eth0_g0_31ksoftirqd/021:50:100
121650420irq/29-eth0_g0_13-21kworker/0:123:06:570
121650420irq/29-eth0_g0_13-21kworker/0:122:21:310
121650420irq/29-eth0_g0_121ksoftirqd/121:38:140
227652410sleep0121750irq/30-eth0_g0_00:03:510
121750410irq/30-eth0_g0_31468-21missed_timers20:14:041
121750410irq/30-eth0_g0_1219-21kworker/1:223:11:451
121750410irq/30-eth0_g0_1219-21kworker/1:222:53:491
121650410irq/29-eth0_g0_31ksoftirqd/022:57:040
121650410irq/29-eth0_g0_31ksoftirqd/021:15:400
121650410irq/29-eth0_g0_31ksoftirqd/000:19:580
121650410irq/29-eth0_g0_13-21kworker/0:123:52:070
121650410irq/29-eth0_g0_13-21kworker/0:123:28:090
121650410irq/29-eth0_g0_121ksoftirqd/100:26:090
121650410irq/29-eth0_g0_0-21swapper/023:14:030
121750400irq/30-eth0_g0_31ksoftirqd/022:43:110
121750400irq/30-eth0_g0_27321-21seq00:20:391
121650400irq/29-eth0_g0_17611-21ps21:29:080
121650400irq/29-eth0_g0_16152-21/usr/sbin/munin21:24:030
121650400irq/29-eth0_g0_13-21kworker/0:122:18:210
121650400irq/29-eth0_g0_13-21kworker/0:121:40:470
121650400irq/29-eth0_g0_13-21kworker/0:100:12:360
121650400irq/29-eth0_g0_121ksoftirqd/100:31:210
121650400irq/29-eth0_g0_0-21swapper/023:58:020
121400ksoftirqd/1121650irq/29-eth0_g0_22:39:081
62822390sleep11219-21kworker/1:220:44:001
62822390sleep11219-21kworker/1:220:44:001
121750390irq/30-eth0_g0_21395-21taskset23:58:071
121750390irq/30-eth0_g0_1219-21kworker/1:221:41:411
121750390irq/30-eth0_g0_0-21swapper/123:44:591
121750390irq/30-eth0_g0_0-21swapper/121:11:041
121650390irq/29-eth0_g0_5544-21unixbench_singl20:39:100
121650390irq/29-eth0_g0_5544-21unixbench_singl20:39:100
121650390irq/29-eth0_g0_31ksoftirqd/023:10:010
121650390irq/29-eth0_g0_25683-21latency_hist22:03:500
121650390irq/29-eth0_g0_21998-21cat21:48:500
121650390irq/29-eth0_g0_21998-21cat21:48:500
121650390irq/29-eth0_g0_13-21kworker/0:123:45:390
121650390irq/29-eth0_g0_13-21kworker/0:123:32:570
121650390irq/29-eth0_g0_13-21kworker/0:123:21:410
121650390irq/29-eth0_g0_13-21kworker/0:122:49:080
121650390irq/29-eth0_g0_13-21kworker/0:100:16:430
121750380irq/30-eth0_g0_31ksoftirqd/019:29:060
121750380irq/30-eth0_g0_1219-21kworker/1:223:24:461
121750380irq/30-eth0_g0_1219-21kworker/1:222:37:411
121750380irq/30-eth0_g0_1219-21kworker/1:222:15:361
121750380irq/30-eth0_g0_1219-21kworker/1:221:35:351
121750380irq/30-eth0_g0_0-21swapper/122:07:041
121750380irq/30-eth0_g0_0-21swapper/122:07:041
121650380irq/29-eth0_g0_31ksoftirqd/023:34:240
121650380irq/29-eth0_g0_1964-21runrttasks20:53:420
121650380irq/29-eth0_g0_1964-21runrttasks20:53:420
121650380irq/29-eth0_g0_1964-21runrttasks19:10:110
121650380irq/29-eth0_g0_1964-21runrttasks19:10:110
121650380irq/29-eth0_g0_13-21kworker/0:123:00:250
121650380irq/29-eth0_g0_13-21kworker/0:123:00:250
121650380irq/29-eth0_g0_13-21kworker/0:122:48:170
121750370irq/30-eth0_g0_1219-21kworker/1:223:52:371
121750370irq/30-eth0_g0_1219-21kworker/1:223:43:401
121750370irq/30-eth0_g0_1219-21kworker/1:222:54:001
121750370irq/30-eth0_g0_1219-21kworker/1:222:26:551
121750370irq/30-eth0_g0_1219-21kworker/1:222:21:431
121750370irq/30-eth0_g0_0-21swapper/123:14:031
121750370irq/30-eth0_g0_0-21swapper/121:56:311
121750370irq/30-eth0_g0_0-21swapper/121:32:551
121650370irq/29-eth0_g0_453-21sendmail_mailqu20:19:090
121650370irq/29-eth0_g0_31842-21unixbench_singl20:14:100
121650370irq/29-eth0_g0_1964-21runrttasks19:43:040
121370ksoftirqd/1121650irq/29-eth0_g0_23:03:491
121370ksoftirqd/1121650irq/29-eth0_g0_23:03:491
121370ksoftirqd/1121650irq/29-eth0_g0_19:24:111
121750360irq/30-eth0_g0_26413-21/usr/sbin/munin19:54:031
121750360irq/30-eth0_g0_1219-21kworker/1:223:31:011
121750360irq/30-eth0_g0_1219-21kworker/1:222:29:091
121750360irq/30-eth0_g0_1219-21kworker/1:221:58:591
121750360irq/30-eth0_g0_0-21swapper/123:07:171
121750360irq/30-eth0_g0_0-21swapper/121:49:281
121650360irq/29-eth0_g0_3101-21grep20:29:120
121650360irq/29-eth0_g0_29364-21unixbench_singl20:04:120
121650360irq/29-eth0_g0_21531-21if_eth019:34:040
121650360irq/29-eth0_g0_1964-21runrttasks21:09:280
121650360irq/29-eth0_g0_1964-21runrttasks20:44:300
121650360irq/29-eth0_g0_1964-21runrttasks20:44:300
121650360irq/29-eth0_g0_1964-21runrttasks20:36:590
121650360irq/29-eth0_g0_1964-21runrttasks19:47:530
121650360irq/29-eth0_g0_1964-21runrttasks19:21:140
121650360irq/29-eth0_g0_18937-21df_abs19:24:010
121650360irq/29-eth0_g0_14998-21runrttasks19:07:501
121650360irq/29-eth0_g0_0-21swapper/021:08:500
121360ksoftirqd/1121650irq/29-eth0_g0_22:13:491
121750350irq/30-eth0_g0_25361-21sed00:14:001
121750350irq/30-eth0_g0_23340-21swap00:04:131
121750350irq/30-eth0_g0_1219-21kworker/1:223:37:511
121750350irq/30-eth0_g0_1219-21kworker/1:221:23:041
121750350irq/30-eth0_g0_1219-21kworker/1:200:25:241
121750350irq/30-eth0_g0_0-21swapper/122:47:241
121650350irq/29-eth0_g0_9088-21sendmail_mailqu20:54:090
121650350irq/29-eth0_g0_30592-21grep20:09:110
121650350irq/29-eth0_g0_1964-21runrttasks20:27:440
121650350irq/29-eth0_g0_1964-21runrttasks19:51:170
121750340irq/30-eth0_g0_32754-21awk20:19:061
121750340irq/30-eth0_g0_2549-21sed20:29:031
121750340irq/30-eth0_g0_23088-21runrttasks19:39:091
121750340irq/30-eth0_g0_1219-21kworker/1:221:48:461
121750340irq/30-eth0_g0_1219-21kworker/1:221:48:461
121750340irq/30-eth0_g0_1219-21kworker/1:221:25:291
121650340irq/29-eth0_g0_1964-21runrttasks20:03:150
121650340irq/29-eth0_g0_1964-21runrttasks19:54:220
121650340irq/29-eth0_g0_10101-21missed_timers20:59:040
121340ksoftirqd/1121650irq/29-eth0_g0_20:04:111
121750330irq/30-eth0_g0_22062-21taskset19:34:141
121750330irq/30-eth0_g0_0-21swapper/119:15:151
121650330irq/29-eth0_g0_0-21swapper/019:14:020
121750320irq/30-eth0_g0_3640-21cpu20:33:591
121750320irq/30-eth0_g0_28031-21swap19:59:091
121750320irq/30-eth0_g0_24913-21/usr/sbin/munin19:48:501
121750320irq/30-eth0_g0_11143-21sed21:04:021
121750320irq/30-eth0_g0_0-21swapper/121:02:481
121750320irq/30-eth0_g0_0-21swapper/120:26:131
121750320irq/30-eth0_g0_0-21swapper/119:51:411
121750320irq/30-eth0_g0_0-21swapper/119:11:511
121750320irq/30-eth0_g0_0-21swapper/119:11:511
121750320irq/30-eth0_g0_0-21swapper/100:03:141
121750310irq/30-eth0_g0_9224-21grep20:54:111
121750310irq/30-eth0_g0_20094-21/usr/sbin/munin19:29:111
121650290irq/29-eth0_g0_30992-21runrttasks20:13:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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