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2026-04-16 - 10:05

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 Thu Apr 16, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
736821590sleep1121450irq/29-eth0_g0_21:42:131
1748721500sleep1121450irq/29-eth0_g0_23:22:351
1454821310sleep0121450irq/29-eth0_g0_22:53:360
424021190sleep0121450irq/29-eth0_g0_21:11:030
1211140ksoftirqd/1121550irq/30-eth0_g0_23:53:371
121930ksoftirqd/1121550irq/30-eth0_g0_22:04:511
121880ksoftirqd/1121550irq/30-eth0_g0_19:35:101
59412850sleep0121550irq/30-eth0_g0_21:28:130
158542760sleep0121450irq/29-eth0_g0_23:06:130
121640ksoftirqd/1121550irq/30-eth0_g0_20:51:040
121500ksoftirqd/1121550irq/30-eth0_g0_00:22:031
121490ksoftirqd/1121550irq/30-eth0_g0_23:34:521
121480ksoftirqd/1121450irq/29-eth0_g0_22:35:100
121470ksoftirqd/1121550irq/30-eth0_g0_21:36:051
219012460sleep1121450irq/29-eth0_g0_00:06:091
121550460irq/30-eth0_g0_1221-21kworker/1:222:48:101
121460ksoftirqd/1121450irq/29-eth0_g0_21:33:531
121550450irq/30-eth0_g0_121ksoftirqd/121:49:131
121550440irq/30-eth0_g0_1334-21seq20:42:351
121440ksoftirqd/1121550irq/30-eth0_g0_22:25:501
121440ksoftirqd/1121550irq/30-eth0_g0_22:25:501
121550430irq/30-eth0_g0_1221-21kworker/1:223:06:311
121550420irq/30-eth0_g0_1221-21kworker/1:223:56:271
121550420irq/30-eth0_g0_1221-21kworker/1:223:35:541
121550420irq/30-eth0_g0_1221-21kworker/1:221:29:231
121550420irq/30-eth0_g0_1221-21kworker/1:221:18:541
121550420irq/30-eth0_g0_103112sleep122:11:171
121450410irq/29-eth0_g0_1911-21runrttasks19:05:480
121450410irq/29-eth0_g0_121ksoftirqd/122:25:010
121450410irq/29-eth0_g0_121ksoftirqd/122:25:010
121410ksoftirqd/1121550irq/30-eth0_g0_19:25:010
184622400sleep0121450irq/29-eth0_g0_23:32:090
121550400irq/30-eth0_g0_121ksoftirqd/122:16:031
121450400irq/29-eth0_g0_88572sleep021:56:580
121450400irq/29-eth0_g0_1911-21runrttasks21:50:190
121450400irq/29-eth0_g0_13-21kworker/0:122:45:430
121450400irq/29-eth0_g0_121ksoftirqd/123:40:590
121400ksoftirqd/1121550irq/30-eth0_g0_23:57:020
121400ksoftirqd/1121550irq/30-eth0_g0_23:38:390
121400ksoftirqd/1121550irq/30-eth0_g0_00:02:380
121550390irq/30-eth0_g0_31ksoftirqd/022:12:330
121550390irq/30-eth0_g0_1221-21kworker/1:223:27:531
121550390irq/30-eth0_g0_1221-21kworker/1:222:58:281
121550390irq/30-eth0_g0_121ksoftirqd/100:01:311
121450390irq/29-eth0_g0_31ksoftirqd/023:17:130
121450390irq/29-eth0_g0_1911-21runrttasks19:54:500
121450390irq/29-eth0_g0_13-21kworker/0:123:49:080
121450390irq/29-eth0_g0_13-21kworker/0:123:03:240
121450390irq/29-eth0_g0_13-21kworker/0:122:19:430
121450390irq/29-eth0_g0_13-21kworker/0:122:07:210
121450390irq/29-eth0_g0_13-21kworker/0:121:17:110
121390ksoftirqd/1121550irq/30-eth0_g0_23:11:180
121390ksoftirqd/1121550irq/30-eth0_g0_21:42:580
121390ksoftirqd/1121550irq/30-eth0_g0_00:39:390
121390ksoftirqd/1121450irq/29-eth0_g0_21:52:541
2440099382cyclictest28945-21munin-run19:55:001
121550380irq/30-eth0_g0_31ksoftirqd/021:48:080
121550380irq/30-eth0_g0_1911-21runrttasks19:09:241
121550380irq/30-eth0_g0_1221-21kworker/1:223:46:441
121550380irq/30-eth0_g0_1221-21kworker/1:223:40:211
121550380irq/30-eth0_g0_1221-21kworker/1:223:15:481
121550380irq/30-eth0_g0_1221-21kworker/1:222:40:401
121550380irq/30-eth0_g0_1221-21kworker/1:222:31:491
121550380irq/30-eth0_g0_1221-21kworker/1:221:12:531
121550380irq/30-eth0_g0_121ksoftirqd/121:55:491
121550380irq/30-eth0_g0_0-21swapper/122:35:011
121450380irq/29-eth0_g0_4105-21latency_hist21:10:010
121450380irq/29-eth0_g0_31ksoftirqd/022:03:110
121450380irq/29-eth0_g0_27962-21latency_hist19:45:010
121450380irq/29-eth0_g0_1911-21runrttasks19:59:580
121450380irq/29-eth0_g0_1911-21runrttasks19:59:580
121450380irq/29-eth0_g0_13-21kworker/0:123:52:060
121450380irq/29-eth0_g0_13-21kworker/0:122:31:310
121450380irq/29-eth0_g0_13-21kworker/0:121:38:310
121450380irq/29-eth0_g0_13-21kworker/0:100:08:100
121450380irq/29-eth0_g0_121ksoftirqd/122:23:511
121450380irq/29-eth0_g0_121ksoftirqd/100:19:521
121450380irq/29-eth0_g0_121ksoftirqd/100:11:491
121380ksoftirqd/1121550irq/30-eth0_g0_23:25:590
121380ksoftirqd/1121550irq/30-eth0_g0_22:55:030
121380ksoftirqd/1121550irq/30-eth0_g0_21:20:420
121380ksoftirqd/1121550irq/30-eth0_g0_00:17:260
121380ksoftirqd/1121450irq/29-eth0_g0_23:13:241
121380ksoftirqd/1121450irq/29-eth0_g0_22:42:000
2440099371cyclictest0-21swapper/123:00:551
121550370irq/30-eth0_g0_1221-21kworker/1:200:30:211
121450370irq/29-eth0_g0_23757-21latency_hist00:25:000
121450370irq/29-eth0_g0_13-21kworker/0:123:22:440
121450370irq/29-eth0_g0_13-21kworker/0:100:32:140
121450370irq/29-eth0_g0_13-21kworker/0:100:27:120
121450370irq/29-eth0_g0_13-21kworker/0:100:14:030
121370ksoftirqd/1121450irq/29-eth0_g0_21:23:281
2440099362cyclictest30452-21munin-run20:10:001
2440099361cyclictest1911-21runrttasks19:30:101
2440099361cyclictest0-21swapper/120:50:321
121550360irq/30-eth0_g0_1221-21kworker/1:200:28:401
121450360irq/29-eth0_g0_30025-21taskset20:05:000
121450360irq/29-eth0_g0_1911-21runrttasks20:57:550
121450360irq/29-eth0_g0_13-21kworker/0:122:20:270
121450360irq/29-eth0_g0_13-21kworker/0:121:32:060
121450360irq/29-eth0_g0_121ksoftirqd/122:06:051
121360ksoftirqd/1121550irq/30-eth0_g0_20:41:250
2440099351cyclictest0-21swapper/119:19:271
121550350irq/30-eth0_g0_121ksoftirqd/120:25:141
121450350irq/29-eth0_g0_3574-21munin-run21:05:000
121450350irq/29-eth0_g0_1982-21lldpd19:39:510
2440099341cyclictest1911-21runrttasks19:30:011
2440099341cyclictest0-21swapper/119:49:351
2440099341cyclictest0-21swapper/119:49:351
2440099341cyclictest0-21swapper/119:11:301
121450340irq/29-eth0_g0_32174-21sshd20:26:340
121450340irq/29-eth0_g0_1911-21runrttasks20:33:260
121450340irq/29-eth0_g0_121ksoftirqd/122:51:451
121450340irq/29-eth0_g0_121ksoftirqd/100:35:551
121450340irq/29-eth0_g0_0-21swapper/020:46:590
121450340irq/29-eth0_g0_0-21swapper/020:24:510
121340ksoftirqd/1121450irq/29-eth0_g0_20:15:001
2440099331cyclictest0-21swapper/120:46:321
2440099330cyclictest0-21swapper/121:00:031
121550330irq/30-eth0_g0_1085-21latency_hist20:40:001
121450330irq/29-eth0_g0_24775-21runrttasks19:13:340
121450330irq/29-eth0_g0_1911-21runrttasks20:37:080
121450330irq/29-eth0_g0_1911-21runrttasks19:46:100
121450330irq/29-eth0_g0_1911-21runrttasks19:46:100
121450330irq/29-eth0_g0_0-21swapper/020:10:060
2440099321cyclictest295942sleep120:00:521
2440099321cyclictest295942sleep120:00:521
2440099321cyclictest0-21swapper/120:25:001
2440099321cyclictest0-21swapper/119:42:371
2440099321cyclictest0-21swapper/119:21:531
121450320irq/29-eth0_g0_26610-21runrttasks19:31:260
121450320irq/29-eth0_g0_25098-21runrttasks19:16:270
2440099311cyclictest0-21swapper/121:09:131
2440099311cyclictest0-21swapper/120:19:041
121450310irq/29-eth0_g0_3099-21latency_hist21:00:001
121450310irq/29-eth0_g0_26169-21runrttasks19:27:110
121450310irq/29-eth0_g0_0-21swapper/020:03:160
121450310irq/29-eth0_g0_0-21swapper/020:03:160
2440099301cyclictest0-21swapper/120:32:591
2440099301cyclictest0-21swapper/119:56:411
2440099301cyclictest0-21swapper/119:56:411
121450300irq/29-eth0_g0_0-21swapper/020:15:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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