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2026-08-06 - 12:28

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 Thu Aug 06, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2934921030sleep1121750irq/30-eth0_g0_20:02:221
1211010ksoftirqd/1121750irq/30-eth0_g0_19:55:441
277862810sleep0121650irq/29-eth0_g0_19:57:120
307562720chrt121750irq/30-eth0_g0_22:22:011
33292710sleep0121650irq/29-eth0_g0_22:42:110
132162690sleep1121750irq/30-eth0_g0_21:07:301
264302630sleep1121650irq/29-eth0_g0_00:16:021
121550ksoftirqd/1121750irq/30-eth0_g0_00:23:571
121520ksoftirqd/1121650irq/29-eth0_g0_23:24:490
63092510sleep1121750irq/30-eth0_g0_22:52:211
63092510sleep1121750irq/30-eth0_g0_22:52:211
121500ksoftirqd/1121750irq/30-eth0_g0_21:19:001
121490ksoftirqd/1121650irq/29-eth0_g0_23:37:001
121650470irq/29-eth0_g0_121ksoftirqd/123:07:180
121470ksoftirqd/1121650irq/29-eth0_g0_23:03:351
121470ksoftirqd/1121650irq/29-eth0_g0_21:14:191
121460ksoftirqd/1121750irq/30-eth0_g0_21:42:221
121450ksoftirqd/1121650irq/29-eth0_g0_23:16:101
121450ksoftirqd/1121650irq/29-eth0_g0_21:40:221
121750440irq/30-eth0_g0_281622sleep122:10:211
121750440irq/30-eth0_g0_121ksoftirqd/119:17:181
121440ksoftirqd/1121650irq/29-eth0_g0_22:25:151
1538599432cyclictest1572-21df_inode20:22:131
121650430irq/29-eth0_g0_31ksoftirqd/021:17:010
121650430irq/29-eth0_g0_1964-21runrttasks00:31:420
121650430irq/29-eth0_g0_14938-21unixbench_singl19:02:210
121650430irq/29-eth0_g0_13-21kworker/0:100:34:560
231472420sleep1121750irq/30-eth0_g0_21:49:051
121750420irq/30-eth0_g0_1219-21kworker/1:223:07:061
121750420irq/30-eth0_g0_0-21swapper/100:32:171
121650420irq/29-eth0_g0_31ksoftirqd/023:52:140
121650420irq/29-eth0_g0_121ksoftirqd/123:50:550
121420ksoftirqd/1121750irq/30-eth0_g0_21:30:350
121750410irq/30-eth0_g0_121ksoftirqd/100:11:441
121650410irq/29-eth0_g0_1964-21runrttasks22:19:460
121650410irq/29-eth0_g0_13-21kworker/0:122:58:510
121650410irq/29-eth0_g0_13-21kworker/0:122:52:110
121650410irq/29-eth0_g0_13-21kworker/0:122:52:110
121650410irq/29-eth0_g0_13-21kworker/0:122:22:190
121650410irq/29-eth0_g0_13-21kworker/0:122:08:070
121650410irq/29-eth0_g0_13-21kworker/0:100:21:560
121650410irq/29-eth0_g0_121ksoftirqd/123:52:151
121410ksoftirqd/1121650irq/29-eth0_g0_22:30:481
121410ksoftirqd/1121650irq/29-eth0_g0_21:29:151
1538599401cyclictest29089-21unixbench_singl22:12:221
1538599401cyclictest23220-21ntpq19:37:221
121750400irq/30-eth0_g0_14538-21cat19:02:151
121750400irq/30-eth0_g0_1219-21kworker/1:223:49:291
121750400irq/30-eth0_g0_121ksoftirqd/123:21:341
121750400irq/30-eth0_g0_121ksoftirqd/122:58:321
121750400irq/30-eth0_g0_0-21swapper/122:33:401
121650400irq/29-eth0_g0_31ksoftirqd/022:12:150
121650400irq/29-eth0_g0_31ksoftirqd/021:08:590
121650400irq/29-eth0_g0_13-21kworker/0:123:29:300
121650400irq/29-eth0_g0_13-21kworker/0:122:48:280
121650400irq/29-eth0_g0_13-21kworker/0:122:37:360
121650400irq/29-eth0_g0_13-21kworker/0:122:36:450
121650400irq/29-eth0_g0_13-21kworker/0:122:28:500
121650400irq/29-eth0_g0_13-21kworker/0:121:42:270
121650400irq/29-eth0_g0_13-21kworker/0:100:23:330
121650400irq/29-eth0_g0_121ksoftirqd/123:25:451
121650400irq/29-eth0_g0_121ksoftirqd/122:50:421
121650400irq/29-eth0_g0_121ksoftirqd/122:01:351
121650400irq/29-eth0_g0_0-21swapper/000:16:330
121400ksoftirqd/1121750irq/30-eth0_g0_22:01:010
121400ksoftirqd/1121750irq/30-eth0_g0_21:23:250
121400ksoftirqd/1121750irq/30-eth0_g0_19:53:130
121400ksoftirqd/1121650irq/29-eth0_g0_23:58:591
121400ksoftirqd/1121650irq/29-eth0_g0_22:46:471
121400ksoftirqd/1121650irq/29-eth0_g0_21:52:211
121400ksoftirqd/1121650irq/29-eth0_g0_21:34:071
121400ksoftirqd/1121650irq/29-eth0_g0_21:34:071
121400ksoftirqd/1121650irq/29-eth0_g0_19:12:221
121400ksoftirqd/1121650irq/29-eth0_g0_19:12:221
1538599391cyclictest11917-21grep21:02:241
121750390irq/30-eth0_g0_1219-21kworker/1:221:26:381
121750390irq/30-eth0_g0_121ksoftirqd/123:30:471
121650390irq/29-eth0_g0_31ksoftirqd/021:37:170
121650390irq/29-eth0_g0_13-21kworker/0:123:33:060
121650390irq/29-eth0_g0_13-21kworker/0:121:32:210
121650390irq/29-eth0_g0_13-21kworker/0:121:32:210
121650390irq/29-eth0_g0_121ksoftirqd/100:18:111
121390ksoftirqd/1121750irq/30-eth0_g0_23:17:060
121390ksoftirqd/1121750irq/30-eth0_g0_23:12:580
121390ksoftirqd/1121750irq/30-eth0_g0_23:02:160
121390ksoftirqd/1121750irq/30-eth0_g0_22:02:260
121390ksoftirqd/1121750irq/30-eth0_g0_21:56:360
121390ksoftirqd/1121750irq/30-eth0_g0_21:47:470
121390ksoftirqd/1121750irq/30-eth0_g0_21:18:040
121390ksoftirqd/1121750irq/30-eth0_g0_20:42:590
121390ksoftirqd/1121750irq/30-eth0_g0_20:20:090
121390ksoftirqd/1121750irq/30-eth0_g0_20:20:090
121390ksoftirqd/1121750irq/30-eth0_g0_20:03:090
121390ksoftirqd/1121750irq/30-eth0_g0_00:08:550
121390ksoftirqd/1121750irq/30-eth0_g0_00:05:490
121390ksoftirqd/1121750irq/30-eth0_g0_00:01:010
121390ksoftirqd/1121650irq/29-eth0_g0_20:45:521
1538599386cyclictest121750irq/30-eth0_g0_00:28:101
1538599381cyclictest25659-21ntp_kernel_pll_19:47:201
121750380irq/30-eth0_g0_1219-21kworker/1:222:04:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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