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2026-03-27 - 16:54

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Fri Mar 27, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2457521180sleep0121650irq/29-eth0_g0_09:35:150
1887021120sleep0121650irq/29-eth0_g0_09:14:170
169812950sleep1121650irq/29-eth0_g0_11:18:461
121880ksoftirqd/1121750irq/30-eth0_g0_12:32:400
269772770sleep1121750irq/30-eth0_g0_07:34:541
158932740chrt121750irq/30-eth0_g0_09:00:130
121720ksoftirqd/12082099cyclictest09:45:541
121720ksoftirqd/1121750irq/30-eth0_g0_09:25:081
145272640sleep1121750irq/30-eth0_g0_08:55:121
121620ksoftirqd/1121750irq/30-eth0_g0_08:50:060
121600ksoftirqd/1121750irq/30-eth0_g0_09:55:161
278712550sleep1121750irq/30-eth0_g0_12:02:101
278712550sleep1121750irq/30-eth0_g0_12:02:101
121540ksoftirqd/1121750irq/30-eth0_g0_12:08:031
121750520irq/30-eth0_g0_2082099cyclictest10:34:151
121510ksoftirqd/1121750irq/30-eth0_g0_12:37:021
121510ksoftirqd/1121750irq/30-eth0_g0_11:59:531
121650490irq/29-eth0_g0_20356-21unixbench_singl07:05:130
97542470sleep1121750irq/30-eth0_g0_10:49:531
121470ksoftirqd/1121750irq/30-eth0_g0_12:34:471
311342460sleep1121650irq/29-eth0_g0_10:04:391
131832450sleep1121750irq/30-eth0_g0_11:02:111
121450ksoftirqd/1121750irq/30-eth0_g0_12:13:111
121450ksoftirqd/1121750irq/30-eth0_g0_10:21:471
121450ksoftirqd/1121750irq/30-eth0_g0_09:12:251
121450ksoftirqd/1121650irq/29-eth0_g0_08:49:371
121750440irq/30-eth0_g0_1219-21kworker/1:212:24:531
121440ksoftirqd/1121650irq/29-eth0_g0_07:58:371
315082430sleep0121650irq/29-eth0_g0_12:16:470
121750430irq/30-eth0_g0_15562sleep112:27:111
121650430irq/29-eth0_g0_31ksoftirqd/011:01:200
121750420irq/30-eth0_g0_26269-21munin-run09:44:541
121750420irq/30-eth0_g0_1219-21kworker/1:211:40:351
121750420irq/30-eth0_g0_121ksoftirqd/109:50:111
121650420irq/29-eth0_g0_31ksoftirqd/011:15:070
121650420irq/29-eth0_g0_31ksoftirqd/010:05:470
121650420irq/29-eth0_g0_13-21kworker/0:112:26:450
121650420irq/29-eth0_g0_13-21kworker/0:112:22:020
121650420irq/29-eth0_g0_13-21kworker/0:109:20:120
121420ksoftirqd/1121650irq/29-eth0_g0_11:51:561
121420ksoftirqd/1121650irq/29-eth0_g0_10:55:291
121420ksoftirqd/1121650irq/29-eth0_g0_10:41:141
121420ksoftirqd/1121650irq/29-eth0_g0_10:41:141
121750410irq/30-eth0_g0_1219-21kworker/1:210:50:221
121750410irq/30-eth0_g0_1219-21kworker/1:210:50:221
121650410irq/29-eth0_g0_1875-21runrttasks10:24:090
121650410irq/29-eth0_g0_1875-21runrttasks07:59:250
121650410irq/29-eth0_g0_13-21kworker/0:112:13:050
121650410irq/29-eth0_g0_13-21kworker/0:111:19:590
121650410irq/29-eth0_g0_13-21kworker/0:111:08:260
121650410irq/29-eth0_g0_121ksoftirqd/112:35:230
2082099401cyclictest17704-21diskmemload11:25:081
121750400irq/30-eth0_g0_1219-21kworker/1:210:16:371
121650400irq/29-eth0_g0_7396-21/usr/sbin/munin10:40:120
121650400irq/29-eth0_g0_7396-21/usr/sbin/munin10:40:120
121650400irq/29-eth0_g0_591-21timerandwakeup10:10:150
121650400irq/29-eth0_g0_30917-21latency07:50:090
121650400irq/29-eth0_g0_31ksoftirqd/011:45:100
121650400irq/29-eth0_g0_20027-21ntp_states11:30:100
121650400irq/29-eth0_g0_13-21kworker/0:112:06:300
121650400irq/29-eth0_g0_13-21kworker/0:111:25:010
121650400irq/29-eth0_g0_13-21kworker/0:110:53:410
121650400irq/29-eth0_g0_13-21kworker/0:110:53:410
121650400irq/29-eth0_g0_13-21kworker/0:110:04:390
121650400irq/29-eth0_g0_13-21kworker/0:109:14:560
121400ksoftirqd/1121750irq/30-eth0_g0_11:14:430
121400ksoftirqd/1121650irq/29-eth0_g0_10:13:531
121400ksoftirqd/1121650irq/29-eth0_g0_07:23:061
2082099391cyclictest2983-21sshd08:09:141
121750390irq/30-eth0_g0_1219-21kworker/1:210:05:121
121750390irq/30-eth0_g0_121ksoftirqd/112:15:081
121750390irq/30-eth0_g0_0-21swapper/109:31:451
121650390irq/29-eth0_g0_31ksoftirqd/009:53:180
121650390irq/29-eth0_g0_31ksoftirqd/009:47:360
121650390irq/29-eth0_g0_23253-21/usr/sbin/munin09:30:160
121650390irq/29-eth0_g0_1875-21runrttasks10:36:350
121650390irq/29-eth0_g0_17704-21diskmemload10:30:080
121650390irq/29-eth0_g0_13-21kworker/0:111:35:460
121390ksoftirqd/1121750irq/30-eth0_g0_09:41:490
121390ksoftirqd/1121750irq/30-eth0_g0_08:24:140
121390ksoftirqd/1121750irq/30-eth0_g0_08:16:430
121390ksoftirqd/1121750irq/30-eth0_g0_07:27:100
121390ksoftirqd/1121750irq/30-eth0_g0_07:11:280
121390ksoftirqd/1121650irq/29-eth0_g0_11:07:491
121390ksoftirqd/1121650irq/29-eth0_g0_09:07:441
249582380sleep1121650irq/29-eth0_g0_09:38:561
2082099381cyclictest28363-21sed07:40:061
2082099381cyclictest23860-21mailstats11:45:141
121750380irq/30-eth0_g0_5067-21uptime08:15:151
121750380irq/30-eth0_g0_121ksoftirqd/111:19:561
121750380irq/30-eth0_g0_0-21swapper/111:36:411
121750380irq/30-eth0_g0_0-21swapper/111:33:071
121750380irq/30-eth0_g0_0-21swapper/110:37:101
121750380irq/30-eth0_g0_0-21swapper/110:27:341
121650380irq/29-eth0_g0_31ksoftirqd/011:41:570
121650380irq/29-eth0_g0_24928-21ntp_states11:50:110
121650380irq/29-eth0_g0_20696-21runrttasks07:08:361
121650380irq/29-eth0_g0_1875-21runrttasks07:21:170
121650380irq/29-eth0_g0_13-21kworker/0:110:15:440
121380ksoftirqd/1121750irq/30-eth0_g0_09:56:090
121380ksoftirqd/1121750irq/30-eth0_g0_08:56:370
121380ksoftirqd/1121750irq/30-eth0_g0_08:27:140
121380ksoftirqd/1121650irq/29-eth0_g0_09:00:111
2082099371cyclictest19643-21grep09:15:141
2082099371cyclictest11128-21unixbench_multi08:40:151
121750370irq/30-eth0_g0_6911-21sed08:25:041
121750370irq/30-eth0_g0_15431-21unixbench_singl11:10:151
121750370irq/30-eth0_g0_121ksoftirqd/109:20:341
121650370irq/29-eth0_g0_26974-21cat07:34:540
121650370irq/29-eth0_g0_1875-21runrttasks07:47:120
121650370irq/29-eth0_g0_1875-21runrttasks07:19:200
121650370irq/29-eth0_g0_13-21kworker/0:112:01:260
121650370irq/29-eth0_g0_13-21kworker/0:112:01:260
121650370irq/29-eth0_g0_13-21kworker/0:111:55:100
121650370irq/29-eth0_g0_13-21kworker/0:110:56:020
121650370irq/29-eth0_g0_13-21kworker/0:110:45:490
121650370irq/29-eth0_g0_0-21swapper/008:10:090
121370ksoftirqd/1121750irq/30-eth0_g0_08:36:570
121370ksoftirqd/1121650irq/29-eth0_g0_07:53:101
121370ksoftirqd/1121650irq/29-eth0_g0_07:47:571
2082099362cyclictest11922sleep108:00:121
2082099361cyclictest25084-21awk07:25:141
121750360irq/30-eth0_g0_3762-21unixbench_multi08:10:161
121650360irq/29-eth0_g0_905-21sort08:00:070
121650360irq/29-eth0_g0_28621-21ntpq07:40:110
121650360irq/29-eth0_g0_17150-21cat09:05:140
121650360irq/29-eth0_g0_13-21kworker/0:110:27:030
121360ksoftirqd/1121750irq/30-eth0_g0_09:29:220
20820993519cyclictest13043-21sed08:50:061
2082099351cyclictest9159-21munin-run08:34:531
121750350irq/30-eth0_g0_21372-21proc_pri07:10:141
121650350irq/29-eth0_g0_2375-21proc_pri08:05:130
121650350irq/29-eth0_g0_1875-21runrttasks08:48:260
121650350irq/29-eth0_g0_11147-21unixbench_singl08:40:160
121650350irq/29-eth0_g0_0-21swapper/008:30:080
121650340irq/29-eth0_g0_27390-21ntp_kernel_pll_07:35:090
2082099331cyclictest9930-21unixbench_singl08:35:151
121750330irq/30-eth0_g0_0-21swapper/107:15:041
121650330irq/29-eth0_g0_27696-21sed07:35:151
2082099321cyclictest0-21swapper/108:24:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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