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2026-05-01 - 02:00

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 all highest latencies:
System rack3slot5s.osadl.org (updated Fri May 01, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1337921250sleep1121450irq/29-eth0_g0_21:45:421
121860ksoftirqd/1121550irq/30-eth0_g0_22:41:410
274382630sleep0121450irq/29-eth0_g0_00:04:210
253002580chrt121550irq/30-eth0_g0_23:43:111
121570ksoftirqd/1121550irq/30-eth0_g0_20:48:040
171592520sleep1121450irq/29-eth0_g0_22:23:121
121510ksoftirqd/1121550irq/30-eth0_g0_23:29:261
215712490sleep0121550irq/30-eth0_g0_23:06:150
179792490sleep0121450irq/29-eth0_g0_22:30:540
121490ksoftirqd/1121550irq/30-eth0_g0_00:27:001
121470ksoftirqd/1121450irq/29-eth0_g0_23:57:131
308792460sleep1121550irq/30-eth0_g0_19:19:271
121460ksoftirqd/1121450irq/29-eth0_g0_21:16:031
159772450chrt121450irq/29-eth0_g0_22:11:171
121450ksoftirqd/1121450irq/29-eth0_g0_20:14:401
131372440sleep1121450irq/29-eth0_g0_21:43:461
121550440irq/30-eth0_g0_1221-21kworker/1:222:33:381
121550430irq/30-eth0_g0_1221-21kworker/1:223:03:081
121550430irq/30-eth0_g0_1221-21kworker/1:222:45:511
121550430irq/30-eth0_g0_1221-21kworker/1:222:25:011
121550430irq/30-eth0_g0_1221-21kworker/1:221:55:401
121550430irq/30-eth0_g0_1221-21kworker/1:221:35:071
121450430irq/29-eth0_g0_1911-21runrttasks19:56:260
121430ksoftirqd/1121550irq/30-eth0_g0_23:59:501
121430ksoftirqd/1121550irq/30-eth0_g0_22:28:020
121430ksoftirqd/1121550irq/30-eth0_g0_22:06:370
121430ksoftirqd/1121550irq/30-eth0_g0_00:26:150
121550420irq/30-eth0_g0_1221-21kworker/1:223:48:071
121550420irq/30-eth0_g0_121ksoftirqd/122:35:501
121550410irq/30-eth0_g0_1221-21kworker/1:223:38:551
121550410irq/30-eth0_g0_1221-21kworker/1:222:15:321
121550410irq/30-eth0_g0_1221-21kworker/1:222:15:321
121550410irq/30-eth0_g0_121ksoftirqd/123:07:131
121450410irq/29-eth0_g0_1911-21runrttasks19:08:380
121450410irq/29-eth0_g0_13-21kworker/0:123:45:150
121450410irq/29-eth0_g0_13-21kworker/0:121:30:090
121450410irq/29-eth0_g0_0-21swapper/000:19:420
121410ksoftirqd/1121450irq/29-eth0_g0_00:30:501
121550400irq/30-eth0_g0_1221-21kworker/1:223:18:501
121550400irq/30-eth0_g0_1221-21kworker/1:221:21:191
121550400irq/30-eth0_g0_0-21swapper/100:13:321
121450400irq/29-eth0_g0_1911-21runrttasks21:05:320
121450400irq/29-eth0_g0_13-21kworker/0:123:54:010
121450400irq/29-eth0_g0_13-21kworker/0:123:17:290
170832390chrt121450irq/29-eth0_g0_22:22:170
121550390irq/30-eth0_g0_1221-21kworker/1:223:30:321
121550390irq/30-eth0_g0_1221-21kworker/1:223:13:161
121550390irq/30-eth0_g0_1221-21kworker/1:222:41:201
121550390irq/30-eth0_g0_1221-21kworker/1:222:02:501
121550390irq/30-eth0_g0_1221-21kworker/1:221:33:471
121550390irq/30-eth0_g0_1221-21kworker/1:221:24:341
121550390irq/30-eth0_g0_121ksoftirqd/122:55:021
121550390irq/30-eth0_g0_121ksoftirqd/100:04:401
121450390irq/29-eth0_g0_24300-21chrt23:33:220
121450390irq/29-eth0_g0_1911-21runrttasks21:12:430
121450390irq/29-eth0_g0_13-21kworker/0:123:43:590
121450390irq/29-eth0_g0_13-21kworker/0:123:34:360
121450390irq/29-eth0_g0_13-21kworker/0:122:34:410
121450390irq/29-eth0_g0_13-21kworker/0:121:24:270
121550380irq/30-eth0_g0_1221-21kworker/1:223:52:061
121550380irq/30-eth0_g0_1221-21kworker/1:222:51:491
121550380irq/30-eth0_g0_1221-21kworker/1:222:06:151
121550380irq/30-eth0_g0_121ksoftirqd/121:12:071
121550380irq/30-eth0_g0_0-21swapper/100:38:081
121450380irq/29-eth0_g0_13-21kworker/0:123:29:210
121450380irq/29-eth0_g0_13-21kworker/0:121:49:210
121450380irq/29-eth0_g0_13-21kworker/0:121:21:550
121450380irq/29-eth0_g0_13-21kworker/0:121:14:400
121450380irq/29-eth0_g0_121ksoftirqd/100:16:501
121380ksoftirqd/1121550irq/30-eth0_g0_21:39:520
121550370irq/30-eth0_g0_1221-21kworker/1:223:24:061
121550370irq/30-eth0_g0_1221-21kworker/1:223:24:061
121550370irq/30-eth0_g0_121ksoftirqd/100:19:481
121450370irq/29-eth0_g0_5559-21latency_hist20:29:250
121450370irq/29-eth0_g0_27957-21munin-run00:09:260
121450370irq/29-eth0_g0_1911-21runrttasks21:01:380
121450370irq/29-eth0_g0_1911-21runrttasks20:41:020
121450370irq/29-eth0_g0_1911-21runrttasks20:38:500
121450370irq/29-eth0_g0_1911-21runrttasks20:01:300
121450370irq/29-eth0_g0_1911-21runrttasks19:15:180
121450370irq/29-eth0_g0_13-21kworker/0:123:00:130
121450370irq/29-eth0_g0_13-21kworker/0:122:51:220
121450370irq/29-eth0_g0_13-21kworker/0:122:18:330
121450370irq/29-eth0_g0_13-21kworker/0:122:18:330
121450370irq/29-eth0_g0_13-21kworker/0:122:03:140
121450370irq/29-eth0_g0_13-21kworker/0:121:55:450
121450370irq/29-eth0_g0_13-21kworker/0:121:54:200
121450370irq/29-eth0_g0_13-21kworker/0:121:35:350
121450370irq/29-eth0_g0_13-21kworker/0:100:35:160
121450370irq/29-eth0_g0_121ksoftirqd/121:51:101
121450370irq/29-eth0_g0_0-21swapper/000:10:060
121370ksoftirqd/1121550irq/30-eth0_g0_22:54:420
121450360irq/29-eth0_g0_23111-21taskset23:21:240
121450360irq/29-eth0_g0_23111-21taskset23:21:240
121450360irq/29-eth0_g0_1911-21runrttasks20:24:070
121450360irq/29-eth0_g0_1911-21runrttasks20:04:280
121450360irq/29-eth0_g0_1911-21runrttasks19:09:490
121450360irq/29-eth0_g0_13-21kworker/0:122:48:030
121450360irq/29-eth0_g0_13-21kworker/0:122:13:040
121360ksoftirqd/1121450irq/29-eth0_g0_23:10:010
121360ksoftirqd/1121450irq/29-eth0_g0_20:03:181
121360ksoftirqd/1121450irq/29-eth0_g0_19:12:271
121450350irq/29-eth0_g0_32374-21ls19:34:260
121450350irq/29-eth0_g0_31879-21latency_hist19:29:260
121450350irq/29-eth0_g0_29581-21runrttasks19:06:501
121450350irq/29-eth0_g0_1911-21runrttasks20:57:200
121450350irq/29-eth0_g0_1911-21runrttasks20:49:400
121450350irq/29-eth0_g0_1911-21runrttasks20:31:550
121450350irq/29-eth0_g0_1911-21runrttasks20:14:370
121450350irq/29-eth0_g0_1911-21runrttasks20:09:440
121450350irq/29-eth0_g0_13-21kworker/0:123:56:230
121450350irq/29-eth0_g0_13-21kworker/0:100:30:140
121350ksoftirqd/132400-21ls19:34:271
121450340irq/29-eth0_g0_1911-21runrttasks19:21:040
121450340irq/29-eth0_g0_1438-21runrttasks19:49:120
121340ksoftirqd/1121450irq/29-eth0_g0_19:26:001
121550330irq/30-eth0_g0_2528-21latency_hist19:59:271
121550330irq/30-eth0_g0_1911-21runrttasks19:44:131
121450330irq/29-eth0_g0_680-21runrttasks19:41:340
121450330irq/29-eth0_g0_334-21runrttasks19:38:380
121450330irq/29-eth0_g0_28557-21runrttasks00:14:380
121450330irq/29-eth0_g0_1800-21runrttasks19:52:280
121550320irq/30-eth0_g0_0-21swapper/120:49:461
121550320irq/30-eth0_g0_0-21swapper/120:32:341
121550310irq/30-eth0_g0_1910-21ntpd20:46:531
121550310irq/30-eth0_g0_0-21swapper/120:21:521
121550310irq/30-eth0_g0_0-21swapper/120:09:481
121550290irq/30-eth0_g0_0-21swapper/121:06:201
121550280irq/30-eth0_g0_0-21swapper/119:20:321
121450280irq/29-eth0_g0_7069-21runrttasks20:44:181
121450280irq/29-eth0_g0_6520-21runrttasks20:38:511
121450280irq/29-eth0_g0_5456-21runrttasks20:28:191
121280ksoftirqd/11911-21runrttasks19:47:441
121550270irq/30-eth0_g0_0-21swapper/120:57:251
121550270irq/30-eth0_g0_0-21swapper/119:50:111
121550270irq/30-eth0_g0_0-21swapper/119:37:571
121450270irq/29-eth0_g0_8926-21chrt21:02:111
121450270irq/29-eth0_g0_3274-21runrttasks20:06:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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