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2026-04-29 - 07:11

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 Apr 29, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211020ksoftirqd/1121550irq/30-eth0_g0_21:14:271
121990ksoftirqd/1121550irq/30-eth0_g0_00:06:131
313582940sleep1121450irq/29-eth0_g0_23:03:571
121840ksoftirqd/1121450irq/29-eth0_g0_20:24:310
121600ksoftirqd/1121550irq/30-eth0_g0_22:36:071
80562560sleep1121550irq/30-eth0_g0_00:34:051
302792530sleep1121450irq/29-eth0_g0_22:53:121
121530ksoftirqd/1121550irq/30-eth0_g0_00:36:180
121490ksoftirqd/1121550irq/30-eth0_g0_21:49:051
121470ksoftirqd/1121550irq/30-eth0_g0_23:33:451
121470ksoftirqd/1121550irq/30-eth0_g0_23:33:451
121470ksoftirqd/1121550irq/30-eth0_g0_21:17:001
121460ksoftirqd/1121550irq/30-eth0_g0_23:18:501
121440ksoftirqd/1121550irq/30-eth0_g0_23:28:501
121440ksoftirqd/1121550irq/30-eth0_g0_21:25:371
121440ksoftirqd/1121450irq/29-eth0_g0_21:34:301
121550430irq/30-eth0_g0_13-21kworker/0:123:02:550
121430ksoftirqd/1121550irq/30-eth0_g0_22:00:121
121430ksoftirqd/1121550irq/30-eth0_g0_21:40:471
121430ksoftirqd/1121450irq/29-eth0_g0_23:21:291
121430ksoftirqd/1121450irq/29-eth0_g0_22:05:181
121550420irq/30-eth0_g0_1221-21kworker/1:222:46:441
121550420irq/30-eth0_g0_1221-21kworker/1:221:58:201
121420ksoftirqd/1121550irq/30-eth0_g0_21:29:080
121420ksoftirqd/1121550irq/30-eth0_g0_00:15:211
121450410irq/29-eth0_g0_31ksoftirqd/022:59:080
121450410irq/29-eth0_g0_31ksoftirqd/022:04:570
121450410irq/29-eth0_g0_262942sleep022:13:570
121450410irq/29-eth0_g0_13-21kworker/0:123:30:260
121450410irq/29-eth0_g0_13-21kworker/0:123:30:260
121450410irq/29-eth0_g0_13-21kworker/0:123:15:120
121410ksoftirqd/1121450irq/29-eth0_g0_21:19:140
121550400irq/30-eth0_g0_121ksoftirqd/122:26:391
121450400irq/29-eth0_g0_13-21kworker/0:123:10:500
121450400irq/29-eth0_g0_13-21kworker/0:123:06:390
121450400irq/29-eth0_g0_13-21kworker/0:122:34:420
121450400irq/29-eth0_g0_13-21kworker/0:122:14:310
121450400irq/29-eth0_g0_13-21kworker/0:121:50:430
121450400irq/29-eth0_g0_13-21kworker/0:100:12:300
121450400irq/29-eth0_g0_121ksoftirqd/100:31:120
121450400irq/29-eth0_g0_121ksoftirqd/100:20:550
121400ksoftirqd/1121550irq/30-eth0_g0_22:45:080
121400ksoftirqd/1121450irq/29-eth0_g0_00:23:491
763999391cyclictest0-21swapper/121:49:431
121550390irq/30-eth0_g0_1221-21kworker/1:200:13:451
121550390irq/30-eth0_g0_121ksoftirqd/122:11:381
121450390irq/29-eth0_g0_1911-21runrttasks20:58:500
121450390irq/29-eth0_g0_13-21kworker/0:123:42:190
121450390irq/29-eth0_g0_13-21kworker/0:123:21:130
121450390irq/29-eth0_g0_13-21kworker/0:122:19:430
121450390irq/29-eth0_g0_13-21kworker/0:121:56:050
121450390irq/29-eth0_g0_13-21kworker/0:121:36:200
121450390irq/29-eth0_g0_13-21kworker/0:121:30:450
121450390irq/29-eth0_g0_13-21kworker/0:121:21:340
121450390irq/29-eth0_g0_13-21kworker/0:100:26:360
121390ksoftirqd/1121450irq/29-eth0_g0_23:40:001
121390ksoftirqd/1121450irq/29-eth0_g0_22:56:481
121390ksoftirqd/1121450irq/29-eth0_g0_22:42:071
121390ksoftirqd/1121450irq/29-eth0_g0_20:29:291
121550380irq/30-eth0_g0_1221-21kworker/1:223:48:031
121550380irq/30-eth0_g0_1221-21kworker/1:222:20:231
121550380irq/30-eth0_g0_1221-21kworker/1:222:17:141
121550380irq/30-eth0_g0_121ksoftirqd/100:39:261
121450380irq/29-eth0_g0_1911-21runrttasks22:41:000
121450380irq/29-eth0_g0_1911-21runrttasks19:11:380
121450380irq/29-eth0_g0_131kworker/0:122:32:350
121450380irq/29-eth0_g0_13-21kworker/0:123:55:070
121450380irq/29-eth0_g0_13-21kworker/0:123:50:440
121450380irq/29-eth0_g0_13-21kworker/0:123:45:400
121450380irq/29-eth0_g0_13-21kworker/0:123:34:450
121450380irq/29-eth0_g0_13-21kworker/0:123:29:050
121450380irq/29-eth0_g0_13-21kworker/0:122:54:070
121450380irq/29-eth0_g0_13-21kworker/0:122:26:430
121450380irq/29-eth0_g0_13-21kworker/0:122:03:190
121450380irq/29-eth0_g0_13-21kworker/0:121:11:150
121450380irq/29-eth0_g0_13-21kworker/0:100:04:460
121450380irq/29-eth0_g0_121ksoftirqd/123:56:301
121450380irq/29-eth0_g0_121ksoftirqd/123:14:021
121450380irq/29-eth0_g0_121ksoftirqd/122:31:401
121380ksoftirqd/1121550irq/30-eth0_g0_20:08:400
763999371cyclictest11809-21taskset19:50:021
121550370irq/30-eth0_g0_1221-21kworker/1:223:35:181
121550370irq/30-eth0_g0_1221-21kworker/1:200:27:561
121550370irq/30-eth0_g0_1221-21kworker/1:200:01:011
121550370irq/30-eth0_g0_1221-21kworker/1:200:01:011
121550370irq/30-eth0_g0_121ksoftirqd/123:08:201
121450370irq/29-eth0_g0_1911-21runrttasks19:25:490
121450370irq/29-eth0_g0_1911-21runrttasks00:02:300
121450370irq/29-eth0_g0_1911-21runrttasks00:02:300
121450370irq/29-eth0_g0_13-21kworker/0:121:46:310
121450370irq/29-eth0_g0_13-21kworker/0:121:43:050
121450370irq/29-eth0_g0_13-21kworker/0:100:18:250
121370ksoftirqd/1121450irq/29-eth0_g0_20:12:091
121370ksoftirqd/1121450irq/29-eth0_g0_19:33:071
121550360irq/30-eth0_g0_1221-21kworker/1:221:39:191
121550360irq/30-eth0_g0_1221-21kworker/1:221:23:291
121450360irq/29-eth0_g0_7612-21runrttasks19:09:191
121450360irq/29-eth0_g0_1911-21runrttasks20:33:260
121450360irq/29-eth0_g0_1911-21runrttasks20:10:300
121450360irq/29-eth0_g0_1911-21runrttasks20:02:020
121450360irq/29-eth0_g0_1911-21runrttasks19:54:520
121450360irq/29-eth0_g0_1911-21runrttasks19:46:320
121450360irq/29-eth0_g0_1911-21runrttasks19:32:520
121360ksoftirqd/1121450irq/29-eth0_g0_20:07:561
763999352cyclictest0-21swapper/119:49:301
763999351cyclictest17802-21grep20:49:311
121550350irq/30-eth0_g0_18242-21taskset20:54:261
121550350irq/30-eth0_g0_1221-21kworker/1:223:49:461
121450350irq/29-eth0_g0_7449-21runrttasks19:07:250
121450350irq/29-eth0_g0_1911-21runrttasks20:37:030
121450350irq/29-eth0_g0_1911-21runrttasks20:29:280
121450350irq/29-eth0_g0_1911-21runrttasks19:52:370
121450350irq/29-eth0_g0_1911-21runrttasks19:20:500
121350ksoftirqd/1121450irq/29-eth0_g0_20:40:111
121350ksoftirqd/1121450irq/29-eth0_g0_19:21:431
763999341cyclictest186202sleep120:57:561
121550340irq/30-eth0_g0_19773-21munin-run21:09:301
121450340irq/29-eth0_g0_1911-21runrttasks21:06:580
121450340irq/29-eth0_g0_1911-21runrttasks20:41:180
121450340irq/29-eth0_g0_10671-21munin-run19:39:300
763999331cyclictest0-21swapper/119:26:141
763999330cyclictest0-21swapper/120:23:111
121450330irq/29-eth0_g0_1972-21lldpd21:01:550
121450330irq/29-eth0_g0_18281-21latency_hist20:54:310
763999321cyclictest0-21swapper/120:39:301
763999321cyclictest0-21swapper/119:56:191
763999321cyclictest0-21swapper/119:43:411
763999321cyclictest0-21swapper/119:43:411
763999321cyclictest0-21swapper/119:12:001
121550320irq/30-eth0_g0_0-21swapper/120:19:011
121450320irq/29-eth0_g0_1911-21runrttasks19:14:390
121450320irq/29-eth0_g0_0-21swapper/020:49:300
763999311cyclictest0-21swapper/121:03:051
763999311cyclictest0-21swapper/120:32:081
763999311cyclictest0-21swapper/120:02:061
121450310irq/29-eth0_g0_8579-21runrttasks19:18:451
763999300cyclictest0-21swapper/119:35:531
121450300irq/29-eth0_g0_1911-21runrttasks19:41:240
121450300irq/29-eth0_g0_1911-21runrttasks19:41:240
121450300irq/29-eth0_g0_0-21swapper/020:18:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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