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2026-07-08 - 13:13

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 highest latencies:
System rack3slot5s.osadl.org (updated Wed Jul 08, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1421321460sleep1121650irq/29-eth0_g0_22:55:571
3258821430sleep0121750irq/30-eth0_g0_00:11:120
251702900sleep1121650irq/29-eth0_g0_23:40:201
257462880sleep0121750irq/30-eth0_g0_21:29:530
121760ksoftirqd/1121750irq/30-eth0_g0_00:06:091
256802750sleep1121650irq/29-eth0_g0_21:29:081
121750ksoftirqd/1121650irq/29-eth0_g0_20:33:320
121740ksoftirqd/1121750irq/30-eth0_g0_19:23:301
278432670sleep0121750irq/30-eth0_g0_23:52:550
121620ksoftirqd/1121750irq/30-eth0_g0_23:28:461
121550ksoftirqd/1121750irq/30-eth0_g0_21:42:541
121550ksoftirqd/1121750irq/30-eth0_g0_19:56:221
121520ksoftirqd/1121750irq/30-eth0_g0_22:25:171
121520ksoftirqd/1121750irq/30-eth0_g0_22:20:161
121520ksoftirqd/1121750irq/30-eth0_g0_19:03:141
121520ksoftirqd/1121750irq/30-eth0_g0_00:32:341
121520ksoftirqd/1121750irq/30-eth0_g0_00:27:401
121510ksoftirqd/1121750irq/30-eth0_g0_22:37:101
121500ksoftirqd/1121750irq/30-eth0_g0_00:11:191
121490ksoftirqd/1121750irq/30-eth0_g0_20:03:250
121490ksoftirqd/1121750irq/30-eth0_g0_20:03:250
121480ksoftirqd/1121750irq/30-eth0_g0_23:49:321
121470ksoftirqd/1121750irq/30-eth0_g0_22:42:521
121460ksoftirqd/1121750irq/30-eth0_g0_21:48:300
121460ksoftirqd/1121750irq/30-eth0_g0_21:16:141
121750450irq/30-eth0_g0_121ksoftirqd/122:28:511
121450ksoftirqd/1121750irq/30-eth0_g0_21:28:061
121450ksoftirqd/1121750irq/30-eth0_g0_00:16:461
121450ksoftirqd/1121650irq/29-eth0_g0_23:15:371
121450ksoftirqd/1121650irq/29-eth0_g0_21:13:450
121650440irq/29-eth0_g0_31ksoftirqd/021:23:280
121440ksoftirqd/1121750irq/30-eth0_g0_22:12:570
121440ksoftirqd/1121650irq/29-eth0_g0_23:58:251
121440ksoftirqd/1121650irq/29-eth0_g0_21:19:061
121440ksoftirqd/1121650irq/29-eth0_g0_19:19:071
121750430irq/30-eth0_g0_1964-21runrttasks20:27:121
121650430irq/29-eth0_g0_31ksoftirqd/023:38:170
121650430irq/29-eth0_g0_31ksoftirqd/022:42:590
121650430irq/29-eth0_g0_13-21kworker/0:121:18:520
121650430irq/29-eth0_g0_121ksoftirqd/122:50:070
121430ksoftirqd/1121650irq/29-eth0_g0_23:00:411
60612420sleep0121650irq/29-eth0_g0_00:33:360
121650420irq/29-eth0_g0_31ksoftirqd/023:17:340
121650420irq/29-eth0_g0_13-21kworker/0:123:55:240
121650420irq/29-eth0_g0_0-21swapper/021:56:170
121420ksoftirqd/1121750irq/30-eth0_g0_22:02:180
121420ksoftirqd/1121650irq/29-eth0_g0_20:43:321
2335099411cyclictest37192sleep122:13:251
2335099411cyclictest37192sleep122:13:251
121750410irq/30-eth0_g0_31ksoftirqd/023:31:360
121750410irq/30-eth0_g0_1219-21kworker/1:223:25:071
121750410irq/30-eth0_g0_1219-21kworker/1:223:25:071
121650410irq/29-eth0_g0_13-21kworker/0:122:46:570
121410ksoftirqd/1121750irq/30-eth0_g0_23:36:340
121410ksoftirqd/1121750irq/30-eth0_g0_22:34:250
121410ksoftirqd/1121750irq/30-eth0_g0_22:06:151
121410ksoftirqd/1121650irq/29-eth0_g0_22:02:091
121410ksoftirqd/1121650irq/29-eth0_g0_20:03:271
121410ksoftirqd/1121650irq/29-eth0_g0_20:03:271
121750400irq/30-eth0_g0_1973-21sort00:18:241
121750400irq/30-eth0_g0_121ksoftirqd/123:21:541
121750400irq/30-eth0_g0_121ksoftirqd/122:03:580
121750400irq/30-eth0_g0_121ksoftirqd/121:54:501
121650400irq/29-eth0_g0_31ksoftirqd/023:43:320
121650400irq/29-eth0_g0_31ksoftirqd/023:18:230
121650400irq/29-eth0_g0_31ksoftirqd/022:22:440
121650400irq/29-eth0_g0_13-21kworker/0:100:13:180
121650400irq/29-eth0_g0_121ksoftirqd/123:27:280
121650400irq/29-eth0_g0_121ksoftirqd/123:27:280
121650400irq/29-eth0_g0_121ksoftirqd/122:43:441
121400ksoftirqd/1121750irq/30-eth0_g0_19:26:030
2335099391cyclictest19907-21diskmemload23:55:221
121750390irq/30-eth0_g0_26423-21cat21:33:261
121750390irq/30-eth0_g0_1219-21kworker/1:223:34:491
121650390irq/29-eth0_g0_31ksoftirqd/019:58:200
121650390irq/29-eth0_g0_1964-21runrttasks19:03:300
121650390irq/29-eth0_g0_13-21kworker/0:123:09:260
121650390irq/29-eth0_g0_13-21kworker/0:100:07:030
121390ksoftirqd/1121750irq/30-eth0_g0_23:00:050
121390ksoftirqd/1121750irq/30-eth0_g0_22:14:260
121390ksoftirqd/1121750irq/30-eth0_g0_22:14:260
121390ksoftirqd/1121750irq/30-eth0_g0_21:40:160
121390ksoftirqd/1121750irq/30-eth0_g0_20:48:050
121390ksoftirqd/1121750irq/30-eth0_g0_20:30:490
121390ksoftirqd/1121750irq/30-eth0_g0_20:26:320
121390ksoftirqd/1121750irq/30-eth0_g0_20:10:530
121390ksoftirqd/1121750irq/30-eth0_g0_19:49:530
121390ksoftirqd/1121750irq/30-eth0_g0_19:33:400
121390ksoftirqd/1121750irq/30-eth0_g0_19:19:480
121390ksoftirqd/1121750irq/30-eth0_g0_19:09:030
121750380irq/30-eth0_g0_1219-21kworker/1:222:50:491
121750380irq/30-eth0_g0_0-21swapper/123:04:091
121650380irq/29-eth0_g0_6579-21unixbench_multi22:23:330
121650380irq/29-eth0_g0_4896-21seq00:29:170
121650380irq/29-eth0_g0_2393-21seq19:53:280
121650380irq/29-eth0_g0_15847-21ntpdc20:48:260
121650380irq/29-eth0_g0_13-21kworker/0:123:04:320
121650380irq/29-eth0_g0_13-21kworker/0:122:56:510
121650380irq/29-eth0_g0_13-21kworker/0:121:34:480
121650380irq/29-eth0_g0_13-21kworker/0:100:23:460
121650380irq/29-eth0_g0_121ksoftirqd/121:43:491
121380ksoftirqd/1121650irq/29-eth0_g0_21:02:391
121380ksoftirqd/1121650irq/29-eth0_g0_21:02:391
121380ksoftirqd/1121650irq/29-eth0_g0_20:52:291
121380ksoftirqd/1121650irq/29-eth0_g0_20:03:111
2335099372cyclictest1964-21runrttasks20:32:391
2335099371cyclictest29857-21sed21:48:221
2335099371cyclictest0-21swapper/120:34:421
121750370irq/30-eth0_g0_0-21swapper/121:03:311
121650370irq/29-eth0_g0_30325-21latency_hist00:03:100
121650370irq/29-eth0_g0_25046-21awk19:13:300
121650370irq/29-eth0_g0_20300-21cat21:08:260
121650370irq/29-eth0_g0_13-21kworker/0:121:43:420
121650370irq/29-eth0_g0_13-21kworker/0:100:21:520
121370ksoftirqd/1121650irq/29-eth0_g0_23:10:131
2335099366cyclictest121750irq/30-eth0_g0_22:09:201
2335099361cyclictest28402-21seq19:28:221
2335099361cyclictest25887-21awk23:43:271
2335099361cyclictest13139-21df_abs20:38:221
121750360irq/30-eth0_g0_0-21swapper/120:18:311
121750360irq/30-eth0_g0_0-21swapper/100:36:351
121650360irq/29-eth0_g0_8502-21taskset20:18:270
121650360irq/29-eth0_g0_31ksoftirqd/019:43:340
121650360irq/29-eth0_g0_1964-21runrttasks20:42:040
121650360irq/29-eth0_g0_1964-21runrttasks19:38:570
121650360irq/29-eth0_g0_1964-21runrttasks19:32:330
121650360irq/29-eth0_g0_18719-21cat21:03:100
121650360irq/29-eth0_g0_18719-21cat21:03:100
121360ksoftirqd/1121750irq/30-eth0_g0_22:29:060
2335099356cyclictest121750irq/30-eth0_g0_21:09:481
2335099351cyclictest31227-21ps19:38:301
2335099351cyclictest30007-21ps19:33:301
2335099351cyclictest17498-21sort20:58:111
2335099351cyclictest14472sleep119:48:311
121650350irq/29-eth0_g0_19483-21grep21:03:300
2335099341cyclictest6324-21tail20:08:331
2335099341cyclictest25334-21unixbench_singl19:13:361
121650340irq/29-eth0_g0_7033-21df_abs20:13:240
121750330irq/30-eth0_g0_2335099cyclictest20:13:251
121650330irq/29-eth0_g0_16978-21memory20:53:260
121750320irq/30-eth0_g0_32047-21df19:43:231
121750310irq/30-eth0_g0_23899-21ps19:08:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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