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2026-04-20 - 05:34

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Mon Apr 20, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3017621400sleep0121550irq/30-eth0_g0_21:15:560
1211120ksoftirqd/1121550irq/30-eth0_g0_21:19:511
878821070sleep1121550irq/30-eth0_g0_23:05:201
878821070sleep1121550irq/30-eth0_g0_23:05:201
1211070ksoftirqd/1121550irq/30-eth0_g0_22:46:201
121640ksoftirqd/1109692chrt23:27:150
121620ksoftirqd/1100632chrt23:18:310
319102590sleep0121550irq/30-eth0_g0_21:33:360
121530ksoftirqd/1121550irq/30-eth0_g0_22:55:501
121520ksoftirqd/1121550irq/30-eth0_g0_23:40:231
165302500sleep1121550irq/30-eth0_g0_00:22:251
121500ksoftirqd/1121450irq/29-eth0_g0_21:39:020
121490ksoftirqd/1121450irq/29-eth0_g0_23:22:440
121490ksoftirqd/1121450irq/29-eth0_g0_22:17:420
121480ksoftirqd/1121550irq/30-eth0_g0_21:27:091
121470ksoftirqd/1121450irq/29-eth0_g0_23:19:081
121470ksoftirqd/1121450irq/29-eth0_g0_00:37:310
121460ksoftirqd/1121550irq/30-eth0_g0_23:47:581
121460ksoftirqd/1121550irq/30-eth0_g0_21:12:481
121550450irq/30-eth0_g0_2664-21taskset22:04:511
121450ksoftirqd/1121450irq/29-eth0_g0_00:35:461
161922440sleep0121450irq/29-eth0_g0_00:19:230
121550440irq/30-eth0_g0_1972-21lldpd19:06:251
121440ksoftirqd/1121450irq/29-eth0_g0_22:48:400
121450430irq/29-eth0_g0_121ksoftirqd/122:03:500
121430ksoftirqd/1121550irq/30-eth0_g0_23:34:591
121430ksoftirqd/1121550irq/30-eth0_g0_22:36:080
121430ksoftirqd/1121550irq/30-eth0_g0_21:24:441
121430ksoftirqd/1121450irq/29-eth0_g0_23:56:330
121550420irq/30-eth0_g0_1221-21kworker/1:200:00:451
121420ksoftirqd/1121450irq/29-eth0_g0_23:59:451
121550410irq/30-eth0_g0_31ksoftirqd/021:20:550
121550410irq/30-eth0_g0_1221-21kworker/1:200:17:341
121450410irq/29-eth0_g0_1911-21runrttasks19:04:550
121450410irq/29-eth0_g0_1911-21runrttasks00:00:320
121450410irq/29-eth0_g0_13-21kworker/0:100:31:110
121410ksoftirqd/1121450irq/29-eth0_g0_22:30:070
121550400irq/30-eth0_g0_1221-21kworker/1:223:51:321
121550400irq/30-eth0_g0_121ksoftirqd/122:41:441
121450400irq/29-eth0_g0_1911-21runrttasks23:49:560
121400ksoftirqd/1121450irq/29-eth0_g0_21:54:501
326512390chrt121450irq/29-eth0_g0_21:40:280
326512390chrt121450irq/29-eth0_g0_21:40:280
121450390irq/29-eth0_g0_1911-21runrttasks19:28:330
121390ksoftirqd/1121550irq/30-eth0_g0_23:05:110
121390ksoftirqd/1121550irq/30-eth0_g0_23:05:110
121550380irq/30-eth0_g0_1221-21kworker/1:223:19:581
121550380irq/30-eth0_g0_1221-21kworker/1:223:01:011
121550380irq/30-eth0_g0_1221-21kworker/1:221:43:081
121550380irq/30-eth0_g0_1221-21kworker/1:221:43:081
121550380irq/30-eth0_g0_11198-21ls23:29:511
121550380irq/30-eth0_g0_0-21swapper/122:30:071
121450380irq/29-eth0_g0_31ksoftirqd/020:06:490
121450380irq/29-eth0_g0_1911-21runrttasks20:53:490
121450380irq/29-eth0_g0_1911-21runrttasks20:41:180
121450380irq/29-eth0_g0_121ksoftirqd/100:07:311
121380ksoftirqd/1121550irq/30-eth0_g0_23:34:160
121380ksoftirqd/1121550irq/30-eth0_g0_19:44:230
121380ksoftirqd/1121450irq/29-eth0_g0_19:57:291
1747399378cyclictest0-21swapper/122:38:171
1747399371cyclictest32181-21taskset21:35:511
121550370irq/30-eth0_g0_4009-21chrt22:18:171
121550370irq/30-eth0_g0_18769-21seq19:22:331
121550370irq/30-eth0_g0_1221-21kworker/1:222:25:421
121550370irq/30-eth0_g0_1221-21kworker/1:221:54:521
121550370irq/30-eth0_g0_0-21swapper/100:12:041
121450370irq/29-eth0_g0_31ksoftirqd/021:54:370
121450370irq/29-eth0_g0_1911-21runrttasks20:21:010
121450370irq/29-eth0_g0_13-21kworker/0:122:27:490
121450370irq/29-eth0_g0_13-21kworker/0:122:23:240
121450370irq/29-eth0_g0_13-21kworker/0:122:11:230
121450370irq/29-eth0_g0_13-21kworker/0:121:55:050
121370ksoftirqd/1121550irq/30-eth0_g0_22:57:080
121370ksoftirqd/1121450irq/29-eth0_g0_23:03:230
121550360irq/30-eth0_g0_1747299cyclictest00:11:460
121550360irq/30-eth0_g0_1221-21kworker/1:223:31:411
121550360irq/30-eth0_g0_1221-21kworker/1:222:20:561
121550360irq/30-eth0_g0_1221-21kworker/1:222:14:511
121550360irq/30-eth0_g0_1221-21kworker/1:221:48:051
121450360irq/29-eth0_g0_31ksoftirqd/023:46:470
121450360irq/29-eth0_g0_1911-21runrttasks22:53:200
121450360irq/29-eth0_g0_1911-21runrttasks21:04:340
121450360irq/29-eth0_g0_1911-21runrttasks00:28:030
121450360irq/29-eth0_g0_1911-21runrttasks00:06:200
121450360irq/29-eth0_g0_13-21kworker/0:123:36:350
121450360irq/29-eth0_g0_13-21kworker/0:122:40:320
121450360irq/29-eth0_g0_13-21kworker/0:100:22:050
121360ksoftirqd/1121450irq/29-eth0_g0_00:25:441
1747399351cyclictest18002-21grep19:14:511
1747399351cyclictest0-21swapper/123:12:311
1747399351cyclictest0-21swapper/100:30:551
121550350irq/30-eth0_g0_1221-21kworker/1:221:30:141
121550350irq/30-eth0_g0_0-21swapper/122:09:101
121450350irq/29-eth0_g0_9404-21seq23:11:390
121450350irq/29-eth0_g0_31ksoftirqd/021:45:450
121450350irq/29-eth0_g0_20005-21latency_hist19:34:510
121450350irq/29-eth0_g0_1911-21runrttasks22:06:200
121450350irq/29-eth0_g0_1911-21runrttasks21:28:090
121450350irq/29-eth0_g0_1911-21runrttasks20:55:360
121450350irq/29-eth0_g0_1911-21runrttasks20:35:260
121450350irq/29-eth0_g0_1911-21runrttasks19:21:060
1747399341cyclictest0-21swapper/119:46:101
1747399340cyclictest0-21swapper/120:07:211
1747399340cyclictest0-21swapper/119:19:251
121550340irq/30-eth0_g0_22929-21taskset20:04:261
121450340irq/29-eth0_g0_1911-21runrttasks21:08:300
121450340irq/29-eth0_g0_1911-21runrttasks20:16:500
121450340irq/29-eth0_g0_1911-21runrttasks20:11:590
121450340irq/29-eth0_g0_1911-21runrttasks19:59:550
121450340irq/29-eth0_g0_1911-21runrttasks19:47:160
121450340irq/29-eth0_g0_1911-21runrttasks19:35:390
121450340irq/29-eth0_g0_18477-21latency_hist19:19:510
121450340irq/29-eth0_g0_13-21kworker/0:123:40:310
121340ksoftirqd/1121550irq/30-eth0_g0_21:12:290
1747399331cyclictest0-21swapper/120:31:361
1747399331cyclictest0-21swapper/120:24:491
1747399331cyclictest0-21swapper/120:12:471
1747399330cyclictest0-21swapper/120:54:581
121550330irq/30-eth0_g0_0-21swapper/122:50:201
121550330irq/30-eth0_g0_0-21swapper/121:03:411
121550330irq/30-eth0_g0_0-21swapper/119:26:501
121450330irq/29-eth0_g0_1911-21runrttasks20:30:530
121450330irq/29-eth0_g0_1911-21runrttasks19:50:120
1747399321cyclictest0-21swapper/121:05:111
1747399321cyclictest0-21swapper/120:45:011
1747399321cyclictest0-21swapper/120:40:061
1747399321cyclictest0-21swapper/120:37:281
121550320irq/30-eth0_g0_0-21swapper/120:53:121
121550320irq/30-eth0_g0_0-21swapper/119:44:041
121450320irq/29-eth0_g0_1911-21runrttasks20:47:060
121450320irq/29-eth0_g0_1911-21runrttasks20:25:160
121450320irq/29-eth0_g0_1911-21runrttasks19:55:110
121450320irq/29-eth0_g0_0-21swapper/119:36:451
1747399311cyclictest0-21swapper/120:25:501
1747399311cyclictest0-21swapper/120:14:521
1747399311cyclictest0-21swapper/119:50:041
1747399311cyclictest0-21swapper/119:30:341
121450290irq/29-eth0_g0_17713-21taskset19:11:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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