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2026-05-06 - 05:26

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Wed May 06, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
653621580sleep1121450irq/29-eth0_g0_21:30:021
510221490sleep0121450irq/29-eth0_g0_21:16:050
121800ksoftirqd/1121450irq/29-eth0_g0_19:32:510
121760ksoftirqd/1121450irq/29-eth0_g0_23:08:160
121610ksoftirqd/1121450irq/29-eth0_g0_21:57:341
63712590sleep1121450irq/29-eth0_g0_21:29:021
121580ksoftirqd/1117450irq/72-mmc020:44:181
121570ksoftirqd/1121550irq/30-eth0_g0_23:28:351
45922560sleep1121550irq/30-eth0_g0_21:11:051
58272550sleep0121450irq/29-eth0_g0_21:23:380
121550ksoftirqd/1121550irq/30-eth0_g0_21:27:170
121550ksoftirqd/1121550irq/30-eth0_g0_00:21:161
121530ksoftirqd/1121550irq/30-eth0_g0_23:52:360
121530ksoftirqd/1121450irq/29-eth0_g0_23:42:150
121530ksoftirqd/1121450irq/29-eth0_g0_00:02:450
121550510irq/30-eth0_g0_2454199cyclictest22:58:381
121450510irq/29-eth0_g0_2454199cyclictest21:15:311
121500ksoftirqd/1121550irq/30-eth0_g0_22:21:571
121490ksoftirqd/1121550irq/30-eth0_g0_19:13:510
121550480irq/30-eth0_g0_2454199cyclictest22:31:431
121550480irq/30-eth0_g0_2454199cyclictest00:31:231
121480ksoftirqd/1121550irq/30-eth0_g0_23:29:251
121480ksoftirqd/1121550irq/30-eth0_g0_23:29:251
121480ksoftirqd/1121550irq/30-eth0_g0_22:26:461
2454199471cyclictest29605-21taskset19:58:541
2454199471cyclictest29605-21taskset19:58:541
121470ksoftirqd/1121550irq/30-eth0_g0_23:09:011
121470ksoftirqd/1121550irq/30-eth0_g0_22:38:291
121470ksoftirqd/1121550irq/30-eth0_g0_22:12:080
121470ksoftirqd/1121550irq/30-eth0_g0_00:27:341
121470ksoftirqd/1121450irq/29-eth0_g0_22:05:541
2454199461cyclictest9526-21seq21:59:191
121550460irq/30-eth0_g0_2454199cyclictest21:42:161
121460ksoftirqd/1121550irq/30-eth0_g0_23:55:240
121460ksoftirqd/1121550irq/30-eth0_g0_22:16:351
121460ksoftirqd/1121550irq/30-eth0_g0_21:52:231
121460ksoftirqd/1121550irq/30-eth0_g0_00:03:411
121550450irq/30-eth0_g0_2454199cyclictest23:11:031
121450450irq/29-eth0_g0_2454199cyclictest23:45:441
121450ksoftirqd/1121550irq/30-eth0_g0_22:11:321
121450ksoftirqd/1121550irq/30-eth0_g0_00:10:551
2454199449cyclictest121450irq/29-eth0_g0_23:21:361
121550440irq/30-eth0_g0_2454199cyclictest23:54:381
121550440irq/30-eth0_g0_2454199cyclictest23:34:341
121550440irq/30-eth0_g0_2454199cyclictest23:15:021
121550440irq/30-eth0_g0_2454199cyclictest22:46:511
121440ksoftirqd/1121550irq/30-eth0_g0_22:49:151
121440ksoftirqd/1121550irq/30-eth0_g0_22:49:151
121440ksoftirqd/1121550irq/30-eth0_g0_22:39:551
121440ksoftirqd/1121450irq/29-eth0_g0_00:34:371
24541994316cyclictest22332-21runrttasks00:05:161
121550430irq/30-eth0_g0_2454199cyclictest23:50:031
121450430irq/29-eth0_g0_1911-21runrttasks22:07:470
121450430irq/29-eth0_g0_1911-21runrttasks00:37:130
121430ksoftirqd/1121450irq/29-eth0_g0_00:15:501
2454199426cyclictest121550irq/30-eth0_g0_19:16:461
2454199421cyclictest2910-21runrttasks20:54:211
121550420irq/30-eth0_g0_2454199cyclictest21:44:431
121420ksoftirqd/1121550irq/30-eth0_g0_21:10:000
121420ksoftirqd/1121450irq/29-eth0_g0_21:19:421
2454199419cyclictest121550irq/30-eth0_g0_20:15:211
2454199418cyclictest121450irq/29-eth0_g0_19:39:221
2454199416cyclictest121450irq/29-eth0_g0_19:54:131
2454199411cyclictest121550irq/30-eth0_g0_20:26:341
121450410irq/29-eth0_g0_1911-21runrttasks22:23:360
121450410irq/29-eth0_g0_1911-21runrttasks20:27:410
121450410irq/29-eth0_g0_13-21kworker/0:123:36:200
121450410irq/29-eth0_g0_13-21kworker/0:121:29:200
121450410irq/29-eth0_g0_13-21kworker/0:100:24:390
121410ksoftirqd/1121550irq/30-eth0_g0_00:06:400
121410ksoftirqd/1121450irq/29-eth0_g0_23:03:041
2454199403cyclictest121450irq/29-eth0_g0_19:21:421
2454199402cyclictest298712sleep120:01:041
2454199402cyclictest24538-21/usr/sbin/munin19:09:141
2454199402cyclictest19908-21seq23:41:411
2454199402cyclictest121550irq/30-eth0_g0_19:47:551
24541994016cyclictest4113-21runrttasks21:06:281
2454199401cyclictest8542sleep120:34:351
121550400irq/30-eth0_g0_1911-21runrttasks20:54:510
121550400irq/30-eth0_g0_1911-21runrttasks00:21:580
121450400irq/29-eth0_g0_1911-21runrttasks19:05:140
121450400irq/29-eth0_g0_13-21kworker/0:122:26:040
121400ksoftirqd/1121450irq/29-eth0_g0_21:02:171
24541993920cyclictest0-21swapper/120:12:131
24541993920cyclictest0-21swapper/119:10:351
2454199392cyclictest30497-21runrttasks20:07:251
2454199392cyclictest121550irq/30-eth0_g0_20:19:501
2454199391cyclictest26908-21runrttasks19:32:101
2454199391cyclictest14962sleep120:40:511
121550390irq/30-eth0_g0_2454199cyclictest21:35:131
121550390irq/30-eth0_g0_2454199cyclictest21:35:131
121550390irq/30-eth0_g0_1911-21runrttasks21:45:200
121550390irq/30-eth0_g0_1911-21runrttasks19:52:130
121450390irq/29-eth0_g0_7441-21latency_hist21:39:150
121450390irq/29-eth0_g0_7441-21latency_hist21:39:150
121450390irq/29-eth0_g0_24833-21chrt00:29:430
121450390irq/29-eth0_g0_14498-21sshd22:48:520
121450390irq/29-eth0_g0_13-21kworker/0:123:14:490
121450390irq/29-eth0_g0_13-21kworker/0:122:39:140
121450390irq/29-eth0_g0_13-21kworker/0:122:17:260
121450390irq/29-eth0_g0_13-21kworker/0:121:55:450
24541993820cyclictest0-21swapper/119:26:391
2454199382cyclictest121450irq/29-eth0_g0_20:31:511
24541993815cyclictest2736-21runrttasks20:53:141
24541993815cyclictest2736-21runrttasks20:53:141
121550380irq/30-eth0_g0_1911-21runrttasks22:31:040
121550380irq/30-eth0_g0_1911-21runrttasks00:13:360
121550380irq/30-eth0_g0_0-21swapper/022:42:030
121450380irq/29-eth0_g0_1911-21runrttasks22:59:160
121450380irq/29-eth0_g0_1911-21runrttasks21:41:140
121450380irq/29-eth0_g0_1911-21runrttasks20:02:090
121450380irq/29-eth0_g0_13-21kworker/0:123:46:050
121450380irq/29-eth0_g0_13-21kworker/0:123:10:330
121450380irq/29-eth0_g0_13-21kworker/0:122:54:100
121450380irq/29-eth0_g0_13-21kworker/0:122:54:100
121450380irq/29-eth0_g0_13-21kworker/0:122:02:280
121450380irq/29-eth0_g0_13-21kworker/0:121:54:130
121450380irq/29-eth0_g0_13-21kworker/0:100:15:580
24541993713cyclictest0-21swapper/119:34:211
121450370irq/29-eth0_g0_1911-21runrttasks21:06:280
121450370irq/29-eth0_g0_1911-21runrttasks20:53:140
121450370irq/29-eth0_g0_1911-21runrttasks20:53:140
121450370irq/29-eth0_g0_1911-21runrttasks20:46:110
121450370irq/29-eth0_g0_1911-21runrttasks20:41:200
121450370irq/29-eth0_g0_1911-21runrttasks20:34:470
121450370irq/29-eth0_g0_1911-21runrttasks20:05:460
121450370irq/29-eth0_g0_13-21kworker/0:123:30:530
121450370irq/29-eth0_g0_13-21kworker/0:123:30:530
121450370irq/29-eth0_g0_13-21kworker/0:122:56:570
121550360irq/30-eth0_g0_1911-21runrttasks20:10:120
121550360irq/30-eth0_g0_1911-21runrttasks19:28:230
121450360irq/29-eth0_g0_1911-21runrttasks23:26:370
121450360irq/29-eth0_g0_1911-21runrttasks23:19:360
121450360irq/29-eth0_g0_1911-21runrttasks20:23:180
121450360irq/29-eth0_g0_1911-21runrttasks20:15:360
121550350irq/30-eth0_g0_0-21swapper/020:29:220
121450350irq/29-eth0_g0_1911-21runrttasks19:55:380
121450350irq/29-eth0_g0_1911-21runrttasks19:55:380
121550340irq/30-eth0_g0_0-21swapper/019:17:000
121450340irq/29-eth0_g0_28618-21seq19:49:150
121450340irq/29-eth0_g0_0-21swapper/019:24:150
121550330irq/30-eth0_g0_0-21swapper/021:00:460
121550320irq/30-eth0_g0_0-21swapper/019:41:080
121550310irq/30-eth0_g0_0-21swapper/019:34:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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