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2026-07-03 - 09:14

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 all highest latencies:
System rack3slot5s.osadl.org (updated Fri Jul 03, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
792321060sleep0121650irq/29-eth0_g0_21:09:470
121810ksoftirqd/1121750irq/30-eth0_g0_20:13:421
121610ksoftirqd/1209902sleep000:15:460
121600ksoftirqd/1121750irq/30-eth0_g0_23:13:351
50162560sleep0121650irq/29-eth0_g0_23:10:310
50162560sleep0121650irq/29-eth0_g0_23:10:310
172082560sleep1121650irq/29-eth0_g0_23:59:351
172082560sleep1121650irq/29-eth0_g0_23:59:351
121530ksoftirqd/1121750irq/30-eth0_g0_00:08:361
81332520sleep1121750irq/30-eth0_g0_21:12:131
121500ksoftirqd/1121750irq/30-eth0_g0_22:02:151
121480ksoftirqd/1121750irq/30-eth0_g0_22:18:180
121480ksoftirqd/1121750irq/30-eth0_g0_22:18:180
121480ksoftirqd/1121750irq/30-eth0_g0_00:33:451
121470ksoftirqd/1121750irq/30-eth0_g0_22:05:351
121470ksoftirqd/1121750irq/30-eth0_g0_19:43:231
121460ksoftirqd/1121750irq/30-eth0_g0_22:49:591
121750450irq/30-eth0_g0_1219-21kworker/1:221:16:471
121750450irq/30-eth0_g0_1219-21kworker/1:200:04:401
121450ksoftirqd/1121750irq/30-eth0_g0_20:03:431
191992440sleep1121650irq/29-eth0_g0_21:57:321
121650440irq/29-eth0_g0_31ksoftirqd/000:11:590
121650440irq/29-eth0_g0_13-21kworker/0:121:40:560
121650440irq/29-eth0_g0_13-21kworker/0:121:40:560
121650440irq/29-eth0_g0_121ksoftirqd/121:43:491
121440ksoftirqd/1121750irq/30-eth0_g0_22:23:431
121440ksoftirqd/1121750irq/30-eth0_g0_19:48:431
121750430irq/30-eth0_g0_1219-21kworker/1:223:54:301
121750430irq/30-eth0_g0_1219-21kworker/1:223:39:351
121430ksoftirqd/1121750irq/30-eth0_g0_23:18:280
121430ksoftirqd/1121750irq/30-eth0_g0_22:56:181
121430ksoftirqd/1121750irq/30-eth0_g0_22:30:040
121430ksoftirqd/1121750irq/30-eth0_g0_19:54:191
121430ksoftirqd/1121650irq/29-eth0_g0_23:57:030
121750420irq/30-eth0_g0_1219-21kworker/1:223:47:431
121750420irq/30-eth0_g0_1219-21kworker/1:222:42:281
121750420irq/30-eth0_g0_1219-21kworker/1:200:21:231
121650420irq/29-eth0_g0_27370-21df20:18:350
121650420irq/29-eth0_g0_0-21swapper/019:07:460
121420ksoftirqd/1121750irq/30-eth0_g0_22:11:170
121420ksoftirqd/1121750irq/30-eth0_g0_19:48:400
121420ksoftirqd/1117450irq/72-mmc023:32:261
121750410irq/30-eth0_g0_1219-21kworker/1:223:26:461
121750410irq/30-eth0_g0_121ksoftirqd/122:13:351
121750410irq/30-eth0_g0_121ksoftirqd/122:13:351
121650410irq/29-eth0_g0_31ksoftirqd/022:07:410
121650410irq/29-eth0_g0_27207-21ls20:18:230
121650410irq/29-eth0_g0_13-21kworker/0:122:48:270
121410ksoftirqd/1121650irq/29-eth0_g0_23:00:581
121410ksoftirqd/1121650irq/29-eth0_g0_22:29:501
260182400sleep0121750irq/30-eth0_g0_00:37:080
121650400irq/29-eth0_g0_13-21kworker/0:121:58:580
121650400irq/29-eth0_g0_13-21kworker/0:121:24:330
121650400irq/29-eth0_g0_13-21kworker/0:121:15:450
121650400irq/29-eth0_g0_13-21kworker/0:100:32:100
121650400irq/29-eth0_g0_13-21kworker/0:100:21:200
121650400irq/29-eth0_g0_1219-21kworker/1:221:28:231
121650400irq/29-eth0_g0_121ksoftirqd/100:05:030
121400ksoftirqd/1121650irq/29-eth0_g0_21:05:261
13852390chrt121650irq/29-eth0_g0_22:56:180
121750390irq/30-eth0_g0_121ksoftirqd/121:20:171
121750390irq/30-eth0_g0_0-21swapper/123:05:341
121750390irq/30-eth0_g0_0-21swapper/121:33:511
121650390irq/29-eth0_g0_5011-21nfs_client20:58:390
121650390irq/29-eth0_g0_31ksoftirqd/023:58:350
121650390irq/29-eth0_g0_31ksoftirqd/023:58:350
121650390irq/29-eth0_g0_31ksoftirqd/022:24:500
121650390irq/29-eth0_g0_31ksoftirqd/021:49:370
121650390irq/29-eth0_g0_25252-21taskset22:21:350
121650390irq/29-eth0_g0_13-21kworker/0:122:45:290
121650390irq/29-eth0_g0_13-21kworker/0:121:46:520
121650390irq/29-eth0_g0_13-21kworker/0:121:33:070
121650390irq/29-eth0_g0_12033-21find23:38:410
121650390irq/29-eth0_g0_121ksoftirqd/123:48:160
121650390irq/29-eth0_g0_121ksoftirqd/123:25:080
121650390irq/29-eth0_g0_121ksoftirqd/122:36:220
121390ksoftirqd/1121650irq/29-eth0_g0_23:49:441
121390ksoftirqd/1121650irq/29-eth0_g0_21:02:461
121390ksoftirqd/1121650irq/29-eth0_g0_00:23:441
997699382cyclictest31317-21ntp_states20:33:401
121750380irq/30-eth0_g0_1219-21kworker/1:222:20:421
121750380irq/30-eth0_g0_1219-21kworker/1:200:28:331
121750380irq/30-eth0_g0_1219-21kworker/1:200:15:001
121650380irq/29-eth0_g0_31ksoftirqd/023:33:500
121650380irq/29-eth0_g0_31ksoftirqd/021:57:020
121650380irq/29-eth0_g0_13-21kworker/0:123:53:210
121650380irq/29-eth0_g0_13-21kworker/0:123:30:190
121650380irq/29-eth0_g0_13-21kworker/0:123:02:050
121650380irq/29-eth0_g0_121ksoftirqd/123:15:010
121650380irq/29-eth0_g0_121ksoftirqd/100:26:560
121380ksoftirqd/1121750irq/30-eth0_g0_20:58:231
121380ksoftirqd/1121650irq/29-eth0_g0_23:08:381
121380ksoftirqd/1121650irq/29-eth0_g0_23:08:381
121380ksoftirqd/1121650irq/29-eth0_g0_22:46:371
121750370irq/30-eth0_g0_9527-21grep19:03:441
121750370irq/30-eth0_g0_1219-21kworker/1:222:34:111
121650370irq/29-eth0_g0_31ksoftirqd/022:41:570
121650370irq/29-eth0_g0_1964-21runrttasks19:14:180
121650370irq/29-eth0_g0_13-21kworker/0:121:37:040
121650370irq/29-eth0_g0_13-21kworker/0:121:19:190
121370ksoftirqd/1121750irq/30-eth0_g0_21:28:451
121370ksoftirqd/1121650irq/29-eth0_g0_22:10:051
997699361cyclictest7003-21diskmemload23:18:381
121750360irq/30-eth0_g0_1219-21kworker/1:221:50:001
121750360irq/30-eth0_g0_1219-21kworker/1:221:40:241
121750360irq/30-eth0_g0_1219-21kworker/1:221:40:241
121650360irq/29-eth0_g0_1964-21runrttasks19:12:550
121650360irq/29-eth0_g0_16145-21sort19:33:220
121650360irq/29-eth0_g0_16145-21sort19:33:220
121650360irq/29-eth0_g0_1029-21df_abs20:43:340
121360ksoftirqd/1121750irq/30-eth0_g0_23:07:050
121360ksoftirqd/1121750irq/30-eth0_g0_19:37:510
121360ksoftirqd/1121750irq/30-eth0_g0_19:37:510
997699352cyclictest30154-21proc_pri20:28:411
997699352cyclictest23463-21munin-run20:03:231
997699352cyclictest10927-21grep23:33:431
121650350irq/29-eth0_g0_29886-21if_eth020:28:360
121650350irq/29-eth0_g0_2781-21cat20:48:420
121650350irq/29-eth0_g0_24112-21swap20:03:420
121650350irq/29-eth0_g0_21770-21unixbench_singl19:53:430
121650350irq/29-eth0_g0_1964-21runrttasks21:03:300
121650350irq/29-eth0_g0_13817-21df_abs19:23:330
121650350irq/29-eth0_g0_11294-21/usr/sbin/munin19:13:381
121350ksoftirqd/1121650irq/29-eth0_g0_19:23:361
997699341cyclictest27890-21grep20:18:441
997699341cyclictest25402-21grep20:08:421
121750340irq/30-eth0_g0_19173-21rt-features19:43:420
121750340irq/30-eth0_g0_1573-21tail20:43:431
121650340irq/29-eth0_g0_18087-21tail19:38:430
121650340irq/29-eth0_g0_0-21swapper/020:53:390
997699332cyclictest28700-21irqstats20:23:351
997699331cyclictest32765-21unixbench_multi20:38:421
121750330irq/30-eth0_g0_10492-21open_inodes19:08:421
121650330irq/29-eth0_g0_32411-21cat20:38:360
121650330irq/29-eth0_g0_31384-21proc_pri20:33:410
121650330irq/29-eth0_g0_28728-21cat20:23:350
121650330irq/29-eth0_g0_22849-21awk19:58:420
121330ksoftirqd/1121750irq/30-eth0_g0_19:18:520
997699321cyclictest13459-21sshd19:21:061
121750320irq/30-eth0_g0_0-21swapper/119:43:341
121650320irq/29-eth0_g0_2860-21unixbench_singl20:48:431
121650320irq/29-eth0_g0_24778-21/usr/sbin/munin20:08:380
121320ksoftirqd/1121750irq/30-eth0_g0_19:33:331
121320ksoftirqd/1121750irq/30-eth0_g0_19:33:331
997699311cyclictest15529-21mailstats19:28:421
997699311cyclictest15529-21mailstats19:28:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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