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2026-05-31 - 08:12

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 Sun May 31, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1720821060sleep0121650irq/29-eth0_g0_22:31:120
1211020ksoftirqd/1121750irq/30-eth0_g0_22:24:401
121870ksoftirqd/1121650irq/29-eth0_g0_22:38:420
121790ksoftirqd/1121750irq/30-eth0_g0_20:46:091
121750ksoftirqd/1121750irq/30-eth0_g0_22:00:351
121630ksoftirqd/155462sleep023:55:290
119882590sleep1121750irq/30-eth0_g0_19:59:411
121510ksoftirqd/1121750irq/30-eth0_g0_22:50:391
121510ksoftirqd/1121650irq/29-eth0_g0_00:01:150
121510ksoftirqd/1121650irq/29-eth0_g0_00:01:150
121490ksoftirqd/1121750irq/30-eth0_g0_20:54:580
121480ksoftirqd/1121750irq/30-eth0_g0_21:32:101
121470ksoftirqd/1121750irq/30-eth0_g0_21:58:311
121750460irq/30-eth0_g0_96662sleep100:14:521
121650460irq/29-eth0_g0_6602-21unixbench_multi19:35:020
121460ksoftirqd/1121750irq/30-eth0_g0_21:37:411
121460ksoftirqd/1121750irq/30-eth0_g0_00:08:251
121750450irq/30-eth0_g0_1219-21kworker/1:223:49:311
121650450irq/29-eth0_g0_1964-21runrttasks19:06:130
121650450irq/29-eth0_g0_1964-21runrttasks19:06:130
121450ksoftirqd/1121750irq/30-eth0_g0_21:48:121
121450ksoftirqd/1121650irq/29-eth0_g0_23:05:261
121450ksoftirqd/1121650irq/29-eth0_g0_19:04:561
121450ksoftirqd/1121650irq/29-eth0_g0_19:04:561
121650440irq/29-eth0_g0_0-21swapper/023:04:570
121440ksoftirqd/1121650irq/29-eth0_g0_23:56:171
121750430irq/30-eth0_g0_1219-21kworker/1:200:13:501
121650430irq/29-eth0_g0_12807-21unixbench_singl00:25:050
121430ksoftirqd/1121650irq/29-eth0_g0_23:50:041
121750420irq/30-eth0_g0_1219-21kworker/1:223:01:361
121750420irq/30-eth0_g0_1219-21kworker/1:222:58:511
121750420irq/30-eth0_g0_1219-21kworker/1:222:45:051
121750420irq/30-eth0_g0_1219-21kworker/1:222:14:121
121650420irq/29-eth0_g0_31ksoftirqd/021:24:580
121650420irq/29-eth0_g0_31ksoftirqd/021:24:580
121650420irq/29-eth0_g0_1964-21runrttasks23:11:510
121650420irq/29-eth0_g0_121ksoftirqd/122:41:250
121420ksoftirqd/1121650irq/29-eth0_g0_00:30:321
3218499411cyclictest18287-21unixbench_singl22:35:031
121750410irq/30-eth0_g0_1219-21kworker/1:221:20:061
121650410irq/29-eth0_g0_13-21kworker/0:123:41:230
121650410irq/29-eth0_g0_13-21kworker/0:100:37:300
121650410irq/29-eth0_g0_121ksoftirqd/123:54:290
121410ksoftirqd/1121750irq/30-eth0_g0_23:28:111
121410ksoftirqd/1121750irq/30-eth0_g0_19:55:110
121410ksoftirqd/1121750irq/30-eth0_g0_00:00:021
121410ksoftirqd/1121750irq/30-eth0_g0_00:00:021
121410ksoftirqd/1121650irq/29-eth0_g0_19:15:011
121750400irq/30-eth0_g0_283622sleep123:17:461
121650400irq/29-eth0_g0_3218399cyclictest23:33:050
121650400irq/29-eth0_g0_319462sleep123:31:451
121650400irq/29-eth0_g0_31ksoftirqd/022:58:090
121650400irq/29-eth0_g0_121ksoftirqd/121:54:460
121650400irq/29-eth0_g0_121ksoftirqd/121:41:041
121400ksoftirqd/1121750irq/30-eth0_g0_23:47:170
121400ksoftirqd/1121750irq/30-eth0_g0_23:28:290
121400ksoftirqd/1121750irq/30-eth0_g0_21:36:580
121400ksoftirqd/1121650irq/29-eth0_g0_22:42:211
121400ksoftirqd/1121650irq/29-eth0_g0_19:45:011
3218499392cyclictest13075-21netstat22:14:571
3218499392cyclictest13075-21netstat22:14:571
121750390irq/30-eth0_g0_1964-21runrttasks23:42:131
121750390irq/30-eth0_g0_1219-21kworker/1:222:30:431
121650390irq/29-eth0_g0_30677-21irqstats21:14:580
121650390irq/29-eth0_g0_31ksoftirqd/022:20:030
121650390irq/29-eth0_g0_31ksoftirqd/000:12:130
121650390irq/29-eth0_g0_13-21kworker/0:123:35:000
121650390irq/29-eth0_g0_13-21kworker/0:123:20:280
121650390irq/29-eth0_g0_13-21kworker/0:122:11:120
121650390irq/29-eth0_g0_13-21kworker/0:122:01:460
121650390irq/29-eth0_g0_13-21kworker/0:121:23:290
121390ksoftirqd/1121750irq/30-eth0_g0_23:02:220
121390ksoftirqd/1121750irq/30-eth0_g0_22:53:590
121390ksoftirqd/1121750irq/30-eth0_g0_22:47:330
121390ksoftirqd/1121750irq/30-eth0_g0_22:07:110
121390ksoftirqd/1121750irq/30-eth0_g0_21:40:170
121390ksoftirqd/1121750irq/30-eth0_g0_21:30:280
121390ksoftirqd/1121750irq/30-eth0_g0_20:32:430
121390ksoftirqd/1121750irq/30-eth0_g0_19:54:230
121390ksoftirqd/1121750irq/30-eth0_g0_19:33:090
121390ksoftirqd/1121750irq/30-eth0_g0_19:20:170
3218499382cyclictest15655-21munin-run20:14:411
313302380sleep1121750irq/30-eth0_g0_21:16:561
121750380irq/30-eth0_g0_1219-21kworker/1:223:39:311
121750380irq/30-eth0_g0_1219-21kworker/1:200:38:031
121750380irq/30-eth0_g0_1219-21kworker/1:200:20:341
121650380irq/29-eth0_g0_31ksoftirqd/022:29:060
121650380irq/29-eth0_g0_1964-21runrttasks19:28:290
121650380irq/29-eth0_g0_13-21kworker/0:123:15:320
121650380irq/29-eth0_g0_13-21kworker/0:121:10:570
121650380irq/29-eth0_g0_13-21kworker/0:100:30:200
121380ksoftirqd/1121650irq/29-eth0_g0_19:10:021
32184993723cyclictest0-21swapper/120:15:011
3218499371cyclictest113192sleep122:08:531
121750370irq/30-eth0_g0_0-21swapper/123:21:371
121750370irq/30-eth0_g0_0-21swapper/121:11:001
121650370irq/29-eth0_g0_31ksoftirqd/021:47:350
121650370irq/29-eth0_g0_22566-21grep20:40:020
121650370irq/29-eth0_g0_13-21kworker/0:122:16:020
121650370irq/29-eth0_g0_13-21kworker/0:122:16:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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