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2026-08-03 - 11:58

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Mon Aug 03, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1701221020chrt121650irq/29-eth0_g0_22:04:540
121600ksoftirqd/1121750irq/30-eth0_g0_23:41:150
275382580chrt121650irq/29-eth0_g0_22:47:260
275382580chrt121650irq/29-eth0_g0_22:47:260
109262530chrt121750irq/30-eth0_g0_21:40:211
109262530chrt121750irq/30-eth0_g0_21:40:211
58862520sleep1121750irq/30-eth0_g0_21:18:461
121510ksoftirqd/1121750irq/30-eth0_g0_22:07:401
141132500sleep0121650irq/29-eth0_g0_00:06:170
121490ksoftirqd/1121650irq/29-eth0_g0_21:13:381
121480ksoftirqd/1121750irq/30-eth0_g0_00:17:111
266932470sleep0121750irq/30-eth0_g0_22:43:280
202132470sleep0121650irq/29-eth0_g0_00:31:030
121460ksoftirqd/1121750irq/30-eth0_g0_22:41:521
121460ksoftirqd/1121650irq/29-eth0_g0_23:42:251
121460ksoftirqd/1121650irq/29-eth0_g0_22:33:351
121460ksoftirqd/1121650irq/29-eth0_g0_21:36:541
121460ksoftirqd/1121650irq/29-eth0_g0_20:36:481
282342450sleep1121750irq/30-eth0_g0_20:37:291
121750450irq/30-eth0_g0_1219-21kworker/1:222:03:401
121450ksoftirqd/1121650irq/29-eth0_g0_23:24:111
121650440irq/29-eth0_g0_13-21kworker/0:123:36:580
121440ksoftirqd/1121750irq/30-eth0_g0_21:27:331
121440ksoftirqd/1121650irq/29-eth0_g0_22:58:050
121440ksoftirqd/1121650irq/29-eth0_g0_22:58:050
121440ksoftirqd/1121650irq/29-eth0_g0_21:52:541
121750430irq/30-eth0_g0_1219-21kworker/1:223:19:541
121650430irq/29-eth0_g0_31ksoftirqd/000:02:080
121430ksoftirqd/1121750irq/30-eth0_g0_22:13:140
121430ksoftirqd/1121750irq/30-eth0_g0_19:07:031
121750420irq/30-eth0_g0_121ksoftirqd/123:32:541
121650420irq/29-eth0_g0_1964-21runrttasks00:34:360
121650420irq/29-eth0_g0_13-21kworker/0:121:42:380
121650420irq/29-eth0_g0_13-21kworker/0:100:11:400
121420ksoftirqd/1121750irq/30-eth0_g0_00:00:011
121420ksoftirqd/1121650irq/29-eth0_g0_22:16:501
121750410irq/30-eth0_g0_1219-21kworker/1:221:46:191
121750410irq/30-eth0_g0_1219-21kworker/1:200:11:421
121750410irq/30-eth0_g0_121ksoftirqd/123:28:421
121650410irq/29-eth0_g0_31ksoftirqd/023:18:330
121650410irq/29-eth0_g0_220202sleep122:26:101
121650410irq/29-eth0_g0_13-21kworker/0:123:55:070
121650410irq/29-eth0_g0_13-21kworker/0:122:52:540
121410ksoftirqd/1121650irq/29-eth0_g0_23:13:221
121410ksoftirqd/1121650irq/29-eth0_g0_21:07:220
547899401cyclictest29618-21df22:57:201
547899401cyclictest29618-21df22:57:201
547899401cyclictest20960-21unixbench_singl20:07:291
121750400irq/30-eth0_g0_25184-21/usr/sbin/munin20:27:311
121750400irq/30-eth0_g0_14849-21/usr/sbin/munin21:57:251
121750400irq/30-eth0_g0_1219-21kworker/1:222:46:341
121750400irq/30-eth0_g0_121ksoftirqd/123:05:091
121750400irq/30-eth0_g0_121ksoftirqd/121:23:161
121750400irq/30-eth0_g0_121ksoftirqd/100:04:411
121650400irq/29-eth0_g0_5024-21unixbench_singl19:02:310
121650400irq/29-eth0_g0_31ksoftirqd/023:27:180
121650400irq/29-eth0_g0_27583-21ls20:37:080
121650400irq/29-eth0_g0_1963-21ntpd23:47:260
121650400irq/29-eth0_g0_1963-21ntpd23:47:260
121650400irq/29-eth0_g0_13-21kworker/0:123:12:080
121650400irq/29-eth0_g0_13-21kworker/0:122:29:040
121650400irq/29-eth0_g0_13-21kworker/0:122:07:530
121650400irq/29-eth0_g0_13-21kworker/0:121:17:430
121650400irq/29-eth0_g0_13-21kworker/0:100:20:580
121400ksoftirqd/1121650irq/29-eth0_g0_20:58:521
121400ksoftirqd/1121650irq/29-eth0_g0_20:20:411
121400ksoftirqd/1121650irq/29-eth0_g0_20:20:411
121400ksoftirqd/1121650irq/29-eth0_g0_19:52:251
547899391cyclictest16237-21vmstat00:12:331
547899391cyclictest11283-21unixbench_singl23:52:301
121750390irq/30-eth0_g0_1219-21kworker/1:223:40:161
121750390irq/30-eth0_g0_1219-21kworker/1:222:54:321
121750390irq/30-eth0_g0_121ksoftirqd/122:49:471
121750390irq/30-eth0_g0_121ksoftirqd/122:49:471
121750390irq/30-eth0_g0_0-21swapper/121:51:041
121650390irq/29-eth0_g0_3919-21unixbench_singl23:22:300
121650390irq/29-eth0_g0_31ksoftirqd/023:43:410
121650390irq/29-eth0_g0_21376-21ntp_states22:22:270
121650390irq/29-eth0_g0_13-21kworker/0:123:12:590
121650390irq/29-eth0_g0_13-21kworker/0:122:33:210
121650390irq/29-eth0_g0_13-21kworker/0:100:25:240
121650390irq/29-eth0_g0_13-21kworker/0:100:25:240
121390ksoftirqd/1121750irq/30-eth0_g0_22:41:500
121390ksoftirqd/1121750irq/30-eth0_g0_22:18:530
121390ksoftirqd/1121750irq/30-eth0_g0_21:55:380
121390ksoftirqd/1121750irq/30-eth0_g0_21:47:130
121390ksoftirqd/1121750irq/30-eth0_g0_21:33:060
121390ksoftirqd/1121750irq/30-eth0_g0_21:13:360
121390ksoftirqd/1121750irq/30-eth0_g0_21:01:570
121390ksoftirqd/1121650irq/29-eth0_g0_20:48:181
121390ksoftirqd/1121650irq/29-eth0_g0_20:16:501
121390ksoftirqd/1121650irq/29-eth0_g0_19:57:571
121390ksoftirqd/1121650irq/29-eth0_g0_19:39:121
121750380irq/30-eth0_g0_1219-21kworker/1:223:50:311
121750380irq/30-eth0_g0_1219-21kworker/1:223:50:311
121750380irq/30-eth0_g0_1219-21kworker/1:221:09:421
121750380irq/30-eth0_g0_121ksoftirqd/122:17:351
121650380irq/29-eth0_g0_9774-21rt-features19:22:290
121650380irq/29-eth0_g0_9774-21rt-features19:22:290
121650380irq/29-eth0_g0_9161-21latency_hist19:22:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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