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2026-07-25 - 08:38

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 Sat Jul 25, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2707921550sleep1121650irq/29-eth0_g0_00:16:061
637621270sleep1121650irq/29-eth0_g0_22:52:211
637621270sleep1121650irq/29-eth0_g0_22:52:211
1611421230sleep1121650irq/29-eth0_g0_23:31:481
2151421160sleep1121650irq/29-eth0_g0_21:40:331
121830ksoftirqd/1121750irq/30-eth0_g0_21:39:560
121820ksoftirqd/1154822sleep023:27:490
121700ksoftirqd/1121750irq/30-eth0_g0_00:31:161
209632680sleep1121650irq/29-eth0_g0_23:51:131
121640ksoftirqd/1121750irq/30-eth0_g0_23:48:520
190562530sleep1121750irq/30-eth0_g0_19:17:441
121530ksoftirqd/1121750irq/30-eth0_g0_23:35:500
121530ksoftirqd/1121750irq/30-eth0_g0_23:35:500
121530ksoftirqd/1121750irq/30-eth0_g0_23:22:501
121650490irq/29-eth0_g0_31ksoftirqd/022:52:420
121490ksoftirqd/1121750irq/30-eth0_g0_19:37:401
121490ksoftirqd/1121650irq/29-eth0_g0_00:36:360
121470ksoftirqd/1121650irq/29-eth0_g0_20:54:341
121750460irq/30-eth0_g0_23064-21unixbench_singl23:57:521
121650460irq/29-eth0_g0_31ksoftirqd/022:57:380
121460ksoftirqd/1121750irq/30-eth0_g0_00:24:281
121750450irq/30-eth0_g0_14343-21munin-run21:12:291
121650450irq/29-eth0_g0_31ksoftirqd/022:13:240
121650450irq/29-eth0_g0_31ksoftirqd/022:13:240
121450ksoftirqd/1121750irq/30-eth0_g0_22:28:231
121450ksoftirqd/1121650irq/29-eth0_g0_00:18:321
121440ksoftirqd/1121750irq/30-eth0_g0_21:55:120
121440ksoftirqd/1121750irq/30-eth0_g0_00:04:470
121440ksoftirqd/1121650irq/29-eth0_g0_22:14:051
121440ksoftirqd/1121650irq/29-eth0_g0_22:14:051
121750430irq/30-eth0_g0_89262sleep123:02:361
121650430irq/29-eth0_g0_121ksoftirqd/121:15:401
121430ksoftirqd/1121750irq/30-eth0_g0_23:09:120
121430ksoftirqd/1121750irq/30-eth0_g0_22:07:150
121430ksoftirqd/1121750irq/30-eth0_g0_19:56:250
121430ksoftirqd/1121650irq/29-eth0_g0_23:20:211
121430ksoftirqd/1121650irq/29-eth0_g0_00:03:051
121750420irq/30-eth0_g0_1964-21runrttasks22:05:491
121650420irq/29-eth0_g0_31ksoftirqd/023:59:370
121650420irq/29-eth0_g0_15627-21unixbench_multi19:02:550
121420ksoftirqd/1121750irq/30-eth0_g0_22:57:331
121420ksoftirqd/1121650irq/29-eth0_g0_21:09:270
121650410irq/29-eth0_g0_4428-21ntp_offset22:42:470
121650410irq/29-eth0_g0_31ksoftirqd/023:18:250
121650410irq/29-eth0_g0_31ksoftirqd/021:19:490
121650410irq/29-eth0_g0_13-21kworker/0:123:12:450
121650410irq/29-eth0_g0_13-21kworker/0:121:15:560
121410ksoftirqd/1121750irq/30-eth0_g0_21:36:230
121410ksoftirqd/1121650irq/29-eth0_g0_23:53:391
1614299401cyclictest6998-21ls20:42:301
1614299401cyclictest263312sleep119:47:441
121750400irq/30-eth0_g0_22443-21unixbench_singl21:42:521
121750400irq/30-eth0_g0_121ksoftirqd/122:52:341
121750400irq/30-eth0_g0_121ksoftirqd/121:50:161
121650400irq/29-eth0_g0_1964-21runrttasks20:46:110
121650400irq/29-eth0_g0_1964-21runrttasks00:21:450
121650400irq/29-eth0_g0_13-21kworker/0:123:25:070
121650400irq/29-eth0_g0_13-21kworker/0:122:21:370
121650400irq/29-eth0_g0_13-21kworker/0:121:44:510
121650400irq/29-eth0_g0_13-21kworker/0:121:29:440
121650400irq/29-eth0_g0_13-21kworker/0:100:13:220
121650400irq/29-eth0_g0_13-21kworker/0:100:09:190
121400ksoftirqd/1121750irq/30-eth0_g0_22:00:550
121400ksoftirqd/1121750irq/30-eth0_g0_21:47:450
121400ksoftirqd/1121750irq/30-eth0_g0_20:32:470
121400ksoftirqd/1121650irq/29-eth0_g0_21:04:551
121400ksoftirqd/1121650irq/29-eth0_g0_20:36:141
16142993910cyclictest0-21swapper/123:12:501
1614299391cyclictest25141-21ls00:07:451
121750390irq/30-eth0_g0_0-21swapper/122:45:051
121750390irq/30-eth0_g0_0-21swapper/121:28:471
121650390irq/29-eth0_g0_31ksoftirqd/019:07:470
121650390irq/29-eth0_g0_121ksoftirqd/122:22:511
121390ksoftirqd/1121750irq/30-eth0_g0_23:44:250
121390ksoftirqd/1121750irq/30-eth0_g0_23:07:250
121390ksoftirqd/1121750irq/30-eth0_g0_22:51:270
121390ksoftirqd/1121750irq/30-eth0_g0_22:51:270
121390ksoftirqd/1121750irq/30-eth0_g0_22:24:100
121390ksoftirqd/1121750irq/30-eth0_g0_21:24:410
121390ksoftirqd/1121750irq/30-eth0_g0_20:18:380
121390ksoftirqd/1121750irq/30-eth0_g0_19:40:500
121390ksoftirqd/1121750irq/30-eth0_g0_19:28:050
121390ksoftirqd/1121750irq/30-eth0_g0_00:25:200
121390ksoftirqd/1121650irq/29-eth0_g0_00:36:341
1614299382cyclictest20604-21taskset19:22:521
1614299382cyclictest1649-21unixbench_singl20:17:511
1614299381cyclictest10457-21chrt23:07:441
121750380irq/30-eth0_g0_1219-21kworker/1:222:38:231
121750380irq/30-eth0_g0_1219-21kworker/1:221:19:081
121750380irq/30-eth0_g0_121ksoftirqd/122:35:051
121750380irq/30-eth0_g0_121ksoftirqd/121:58:501
121750380irq/30-eth0_g0_121ksoftirqd/121:36:531
121650380irq/29-eth0_g0_31ksoftirqd/023:39:070
121650380irq/29-eth0_g0_28121-21irqstats22:07:440
121650380irq/29-eth0_g0_1964-21runrttasks21:03:400
121650380irq/29-eth0_g0_1964-21runrttasks00:31:110
121650380irq/29-eth0_g0_13-21kworker/0:122:41:470
121650380irq/29-eth0_g0_13-21kworker/0:122:34:290
121380ksoftirqd/1121750irq/30-eth0_g0_23:56:590
121380ksoftirqd/1121750irq/30-eth0_g0_22:27:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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