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2026-08-18 - 04:46

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 Tue Aug 18, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74842940sleep1121650irq/29-eth0_g0_00:00:081
121730ksoftirqd/1121750irq/30-eth0_g0_20:46:470
128602580sleep0121750irq/30-eth0_g0_22:09:280
121530ksoftirqd/1121650irq/29-eth0_g0_22:03:331
121510ksoftirqd/1121750irq/30-eth0_g0_00:35:091
121650500irq/29-eth0_g0_31ksoftirqd/000:02:110
121650490irq/29-eth0_g0_31ksoftirqd/023:51:510
121480ksoftirqd/1121750irq/30-eth0_g0_21:28:101
121480ksoftirqd/1121750irq/30-eth0_g0_21:28:101
175072450sleep1121750irq/30-eth0_g0_20:16:461
175072450sleep1121750irq/30-eth0_g0_20:16:461
121750450irq/30-eth0_g0_121ksoftirqd/123:10:530
121450ksoftirqd/1121650irq/29-eth0_g0_22:17:061
121450ksoftirqd/1121650irq/29-eth0_g0_20:52:511
121450ksoftirqd/1117450irq/72-mmc023:54:501
121750440irq/30-eth0_g0_1219-21kworker/1:221:13:131
121650440irq/29-eth0_g0_32006-21unixbench_singl19:01:550
121650440irq/29-eth0_g0_31ksoftirqd/022:42:320
121650440irq/29-eth0_g0_31ksoftirqd/022:14:010
121650440irq/29-eth0_g0_31ksoftirqd/022:14:010
121650440irq/29-eth0_g0_31ksoftirqd/021:12:300
121650440irq/29-eth0_g0_31ksoftirqd/000:14:480
121650440irq/29-eth0_g0_29506-21diskmemload22:31:580
121650440irq/29-eth0_g0_121ksoftirqd/100:28:110
121440ksoftirqd/1121750irq/30-eth0_g0_19:51:550
121440ksoftirqd/1121650irq/29-eth0_g0_19:08:461
213802430sleep1121650irq/29-eth0_g0_22:43:471
121750430irq/30-eth0_g0_31ksoftirqd/019:46:460
121650430irq/29-eth0_g0_31ksoftirqd/021:52:430
121430ksoftirqd/1121650irq/29-eth0_g0_21:56:501
121750420irq/30-eth0_g0_0-21swapper/019:06:550
121650420irq/29-eth0_g0_31ksoftirqd/021:48:260
121650420irq/29-eth0_g0_31ksoftirqd/021:40:100
121650420irq/29-eth0_g0_31ksoftirqd/021:09:550
121650420irq/29-eth0_g0_13-21kworker/0:121:57:590
121420ksoftirqd/174422sleep023:59:390
121420ksoftirqd/1121650irq/29-eth0_g0_20:43:451
305402410sleep1121750irq/30-eth0_g0_21:09:171
121650410irq/29-eth0_g0_13-21kworker/0:122:24:570
121650410irq/29-eth0_g0_13-21kworker/0:100:20:070
121410ksoftirqd/1121650irq/29-eth0_g0_23:33:540
201422400sleep0121750irq/30-eth0_g0_22:38:390
121750400irq/30-eth0_g0_13-21kworker/0:122:18:390
121750400irq/30-eth0_g0_1219-21kworker/1:222:37:221
121650400irq/29-eth0_g0_31ksoftirqd/023:26:160
121650400irq/29-eth0_g0_31ksoftirqd/022:46:490
121650400irq/29-eth0_g0_31ksoftirqd/000:31:360
121650400irq/29-eth0_g0_13-21kworker/0:123:41:190
121650400irq/29-eth0_g0_13-21kworker/0:123:12:290
121650400irq/29-eth0_g0_13-21kworker/0:123:01:550
121650400irq/29-eth0_g0_13-21kworker/0:122:30:550
121650400irq/29-eth0_g0_13-21kworker/0:122:04:180
121650400irq/29-eth0_g0_13-21kworker/0:100:21:400
121650400irq/29-eth0_g0_13-21kworker/0:100:08:020
121400ksoftirqd/1121750irq/30-eth0_g0_23:48:461
121400ksoftirqd/1121650irq/29-eth0_g0_23:01:271
121400ksoftirqd/1121650irq/29-eth0_g0_19:31:021
121400ksoftirqd/1121650irq/29-eth0_g0_19:16:101
121400ksoftirqd/1121650irq/29-eth0_g0_19:16:101
121750390irq/30-eth0_g0_1219-21kworker/1:223:30:521
121750390irq/30-eth0_g0_1219-21kworker/1:222:31:521
121750390irq/30-eth0_g0_1219-21kworker/1:222:27:471
121750390irq/30-eth0_g0_1219-21kworker/1:200:05:361
121650390irq/29-eth0_g0_31ksoftirqd/023:48:200
121650390irq/29-eth0_g0_13-21kworker/0:123:46:130
121650390irq/29-eth0_g0_13-21kworker/0:121:24:420
121650390irq/29-eth0_g0_121ksoftirqd/121:29:260
121650390irq/29-eth0_g0_121ksoftirqd/121:29:260
121390ksoftirqd/1121750irq/30-eth0_g0_20:12:321
121390ksoftirqd/1121750irq/30-eth0_g0_20:12:321
121390ksoftirqd/1121650irq/29-eth0_g0_22:09:251
121390ksoftirqd/1121650irq/29-eth0_g0_21:03:221
121390ksoftirqd/1121650irq/29-eth0_g0_20:09:491
133602380sleep1121650irq/29-eth0_g0_00:22:091
121750380irq/30-eth0_g0_32476-21cyclictest21:35:141
121750380irq/30-eth0_g0_1219-21kworker/1:223:21:121
121750380irq/30-eth0_g0_1219-21kworker/1:222:54:181
121750380irq/30-eth0_g0_1219-21kworker/1:222:14:141
121750380irq/30-eth0_g0_1219-21kworker/1:222:14:141
121750380irq/30-eth0_g0_1219-21kworker/1:221:41:441
121750380irq/30-eth0_g0_0-21swapper/100:06:371
121750380irq/30-eth0_g0_0-21swapper/020:51:550
121650380irq/29-eth0_g0_24454-21/usr/sbin/munin22:56:470
121650380irq/29-eth0_g0_13-21kworker/0:123:27:280
121650380irq/29-eth0_g0_13-21kworker/0:123:18:560
121650380irq/29-eth0_g0_13-21kworker/0:122:56:170
121650380irq/29-eth0_g0_13-21kworker/0:121:45:210
121380ksoftirqd/1121650irq/29-eth0_g0_20:26:471
121380ksoftirqd/1121650irq/29-eth0_g0_19:52:031
121380ksoftirqd/1121650irq/29-eth0_g0_19:20:431
121750370irq/30-eth0_g0_1219-21kworker/1:223:25:131
121750370irq/30-eth0_g0_1219-21kworker/1:223:12:301
121750370irq/30-eth0_g0_1219-21kworker/1:223:03:301
121750370irq/30-eth0_g0_1219-21kworker/1:221:53:241
121750370irq/30-eth0_g0_1219-21kworker/1:221:20:231
121750370irq/30-eth0_g0_1219-21kworker/1:200:30:251
121750370irq/30-eth0_g0_1219-21kworker/1:200:15:121
121750370irq/30-eth0_g0_12177-21sshd00:17:391
121750370irq/30-eth0_g0_0-21swapper/123:37:531
121750370irq/30-eth0_g0_0-21swapper/020:41:450
121650370irq/29-eth0_g0_31ksoftirqd/021:18:060
121650370irq/29-eth0_g0_13-21kworker/0:121:32:150
121370ksoftirqd/1121650irq/29-eth0_g0_20:56:501
121370ksoftirqd/1121650irq/29-eth0_g0_19:50:291
121370ksoftirqd/1121650irq/29-eth0_g0_19:21:541
121750360irq/30-eth0_g0_1219-21kworker/1:223:36:311
121750360irq/30-eth0_g0_1219-21kworker/1:222:21:321
121750360irq/30-eth0_g0_1219-21kworker/1:221:39:441
121650360irq/29-eth0_g0_21011-21/usr/sbin/munin20:31:500
121650360irq/29-eth0_g0_1964-21runrttasks20:57:010
121650360irq/29-eth0_g0_1964-21runrttasks20:13:000
121650360irq/29-eth0_g0_1964-21runrttasks20:13:000
121650360irq/29-eth0_g0_1964-21runrttasks20:01:350
121650360irq/29-eth0_g0_1964-21runrttasks19:57:460
121650360irq/29-eth0_g0_1964-21runrttasks19:24:250
121750350irq/30-eth0_g0_7978-21proc_pri19:36:511
121750350irq/30-eth0_g0_31406-21sed19:01:461
121750350irq/30-eth0_g0_27260-21grep23:06:551
121750350irq/30-eth0_g0_25217-21/usr/sbin/munin20:46:531
121750350irq/30-eth0_g0_19093-21sendmail_mailqu20:21:531
121650350irq/29-eth0_g0_22391-21df_inode20:36:450
121650350irq/29-eth0_g0_1964-21runrttasks21:05:200
121650350irq/29-eth0_g0_1964-21runrttasks20:26:330
121650350irq/29-eth0_g0_1964-21runrttasks20:23:460
121650350irq/29-eth0_g0_1964-21runrttasks20:20:430
121650350irq/29-eth0_g0_1964-21runrttasks20:20:430
121650350irq/29-eth0_g0_1964-21runrttasks19:37:300
121350ksoftirqd/1121650irq/29-eth0_g0_21:46:531
121350ksoftirqd/1121650irq/29-eth0_g0_19:45:421
121750340irq/30-eth0_g0_3423-21unixbench_multi23:41:521
121750340irq/30-eth0_g0_3247899cyclictest20:31:431
121750340irq/30-eth0_g0_21901-21/usr/sbin/munin22:46:451
121650340irq/29-eth0_g0_9415-21unixbench_singl19:41:520
121650340irq/29-eth0_g0_6657-21seq19:31:470
121650340irq/29-eth0_g0_1964-21runrttasks20:09:060
121650340irq/29-eth0_g0_1964-21runrttasks19:26:340
121650340irq/29-eth0_g0_1964-21runrttasks19:15:180
121650340irq/29-eth0_g0_1964-21runrttasks19:15:180
121750330irq/30-eth0_g0_22656-21open_files20:36:511
121750330irq/30-eth0_g0_1964-21runrttasks19:17:030
121750330irq/30-eth0_g0_1214-21netstat21:21:491
121330ksoftirqd/114820-21ls20:06:321
121750320irq/30-eth0_g0_6827-21sendmail_mailqu19:31:511
121650320irq/29-eth0_g0_13472-21runrttasks20:00:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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