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2026-04-26 - 13:34

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 Sun Apr 26, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211110ksoftirqd/1121550irq/30-eth0_g0_19:54:141
121880ksoftirqd/1121550irq/30-eth0_g0_00:18:321
249332790sleep0121550irq/30-eth0_g0_23:11:080
184462720sleep1121550irq/30-eth0_g0_22:07:271
230212590sleep1121550irq/30-eth0_g0_22:52:291
210542550chrt121450irq/29-eth0_g0_22:33:131
157882550sleep1121550irq/30-eth0_g0_21:41:031
14852550sleep0121450irq/29-eth0_g0_00:39:370
14852550sleep0121450irq/29-eth0_g0_00:39:370
121520ksoftirqd/1121550irq/30-eth0_g0_21:19:511
121500ksoftirqd/1121550irq/30-eth0_g0_21:46:471
234522490sleep0121550irq/30-eth0_g0_22:56:360
121490ksoftirqd/1121550irq/30-eth0_g0_23:59:091
121490ksoftirqd/1121550irq/30-eth0_g0_23:59:091
121470ksoftirqd/1121550irq/30-eth0_g0_23:16:431
121470ksoftirqd/1121550irq/30-eth0_g0_23:01:181
121470ksoftirqd/1121450irq/29-eth0_g0_22:16:581
121450450irq/29-eth0_g0_31ksoftirqd/022:15:290
121450ksoftirqd/1121450irq/29-eth0_g0_23:50:571
121550440irq/30-eth0_g0_1221-21kworker/1:222:10:301
121550440irq/30-eth0_g0_1221-21kworker/1:200:21:331
121440ksoftirqd/1121450irq/29-eth0_g0_22:54:190
121440ksoftirqd/1121450irq/29-eth0_g0_22:29:371
278772430sleep0121450irq/29-eth0_g0_23:39:580
121450430irq/29-eth0_g0_13-21kworker/0:122:41:370
121430ksoftirqd/1121550irq/30-eth0_g0_23:25:541
121430ksoftirqd/1121450irq/29-eth0_g0_23:23:151
121430ksoftirqd/1121450irq/29-eth0_g0_21:29:381
121550410irq/30-eth0_g0_1221-21kworker/1:221:32:261
121450410irq/29-eth0_g0_30499cyclictest21:49:230
121450410irq/29-eth0_g0_31ksoftirqd/022:09:380
121450410irq/29-eth0_g0_31ksoftirqd/021:27:270
121450410irq/29-eth0_g0_0-21swapper/019:07:040
121550400irq/30-eth0_g0_121ksoftirqd/123:43:441
121450400irq/29-eth0_g0_31ksoftirqd/000:22:290
121450400irq/29-eth0_g0_31ksoftirqd/000:08:400
121450400irq/29-eth0_g0_174192sleep021:57:170
121450400irq/29-eth0_g0_13-21kworker/0:123:32:490
121450400irq/29-eth0_g0_13-21kworker/0:123:23:320
121450400irq/29-eth0_g0_13-21kworker/0:121:12:350
30599391cyclictest11079-21latency_hist20:54:381
129722390sleep1121550irq/30-eth0_g0_21:13:401
121550390irq/30-eth0_g0_1221-21kworker/1:223:46:251
121550390irq/30-eth0_g0_1221-21kworker/1:222:03:231
121550390irq/30-eth0_g0_1221-21kworker/1:221:57:281
121550390irq/30-eth0_g0_1221-21kworker/1:200:02:031
121550390irq/30-eth0_g0_121ksoftirqd/123:09:231
121550390irq/30-eth0_g0_121ksoftirqd/122:20:021
121550390irq/30-eth0_g0_121ksoftirqd/100:26:411
121550390irq/30-eth0_g0_0-21swapper/100:10:361
121450390irq/29-eth0_g0_31ksoftirqd/022:38:360
121450390irq/29-eth0_g0_31ksoftirqd/021:40:250
121450390irq/29-eth0_g0_1911-21runrttasks19:57:240
121450390irq/29-eth0_g0_13-21kworker/0:100:25:190
121450390irq/29-eth0_g0_0-21swapper/000:19:370
121390ksoftirqd/1121550irq/30-eth0_g0_23:34:530
121390ksoftirqd/1121550irq/30-eth0_g0_21:54:170
121390ksoftirqd/1121550irq/30-eth0_g0_20:54:510
121390ksoftirqd/1121550irq/30-eth0_g0_20:42:370
121390ksoftirqd/1121550irq/30-eth0_g0_20:22:160
121390ksoftirqd/1121550irq/30-eth0_g0_20:14:340
121390ksoftirqd/1121550irq/30-eth0_g0_19:32:590
121390ksoftirqd/1121450irq/29-eth0_g0_21:01:091
121390ksoftirqd/1121450irq/29-eth0_g0_19:29:121
30599381cyclictest22063-21taskset22:43:091
121550380irq/30-eth0_g0_1221-21kworker/1:221:51:431
121550380irq/30-eth0_g0_121ksoftirqd/100:33:091
121550380irq/30-eth0_g0_0-21swapper/123:35:251
121550380irq/30-eth0_g0_0-21swapper/122:45:141
121550380irq/30-eth0_g0_0-21swapper/121:35:031
121550380irq/30-eth0_g0_0-21swapper/121:35:031
121450380irq/29-eth0_g0_1911-21runrttasks22:12:340
121450380irq/29-eth0_g0_13-21kworker/0:123:54:390
121450380irq/29-eth0_g0_13-21kworker/0:123:54:390
121450380irq/29-eth0_g0_13-21kworker/0:123:51:010
121450380irq/29-eth0_g0_13-21kworker/0:123:47:330
121450380irq/29-eth0_g0_13-21kworker/0:123:04:420
121450380irq/29-eth0_g0_13-21kworker/0:122:45:050
121450380irq/29-eth0_g0_13-21kworker/0:122:04:150
121450380irq/29-eth0_g0_13-21kworker/0:121:17:510
121380ksoftirqd/1121550irq/30-eth0_g0_23:02:130
121380ksoftirqd/1121550irq/30-eth0_g0_20:52:480
121380ksoftirqd/1121550irq/30-eth0_g0_19:40:250
121380ksoftirqd/1121550irq/30-eth0_g0_00:31:490
30599371cyclictest0-21swapper/120:46:161
121550370irq/30-eth0_g0_31ksoftirqd/021:21:290
121550370irq/30-eth0_g0_1221-21kworker/1:223:11:551
121550370irq/30-eth0_g0_1221-21kworker/1:222:38:231
121550370irq/30-eth0_g0_121ksoftirqd/100:36:301
121550370irq/30-eth0_g0_121ksoftirqd/100:36:301
121550370irq/30-eth0_g0_0-21swapper/100:04:551
121450370irq/29-eth0_g0_13-21kworker/0:123:25:590
121450370irq/29-eth0_g0_13-21kworker/0:123:18:520
121450370irq/29-eth0_g0_13-21kworker/0:122:27:290
121450370irq/29-eth0_g0_13-21kworker/0:122:20:550
121450370irq/29-eth0_g0_13-21kworker/0:121:30:260
121450370irq/29-eth0_g0_13-21kworker/0:100:10:010
121450370irq/29-eth0_g0_13-21kworker/0:100:03:120
30599361cyclictest6509-21grep20:09:371
121550360irq/30-eth0_g0_1221-21kworker/1:222:56:461
121450360irq/29-eth0_g0_31ksoftirqd/022:31:250
121450360irq/29-eth0_g0_26938-21runrttasks23:30:511
121450360irq/29-eth0_g0_1911-21runrttasks21:02:090
121450360irq/29-eth0_g0_1911-21runrttasks20:48:490
121450360irq/29-eth0_g0_1911-21runrttasks19:48:460
121360ksoftirqd/1121450irq/29-eth0_g0_21:36:490
121360ksoftirqd/1121450irq/29-eth0_g0_21:36:490
121360ksoftirqd/1121450irq/29-eth0_g0_20:44:381
121360ksoftirqd/1121450irq/29-eth0_g0_20:17:451
121360ksoftirqd/1121450irq/29-eth0_g0_19:59:371
30599351cyclictest8004-21cat20:24:371
30599351cyclictest0-21swapper/120:26:151
121550350irq/30-eth0_g0_1911-21runrttasks19:04:591
121450350irq/29-eth0_g0_5556-21sshd20:00:100
121450350irq/29-eth0_g0_5556-21sshd20:00:100
121450350irq/29-eth0_g0_1911-21runrttasks20:09:160
121450350irq/29-eth0_g0_1911-21runrttasks19:53:330
121450350irq/29-eth0_g0_1911-21runrttasks19:34:570
121450350irq/29-eth0_g0_1911-21runrttasks19:20:490
121450350irq/29-eth0_g0_1911-21runrttasks19:19:360
121450350irq/29-eth0_g0_1911-21runrttasks19:12:410
30599341cyclictest2852-21sshd19:34:101
30599341cyclictest0-21swapper/121:05:281
30599341cyclictest0-21swapper/120:33:111
30599340cyclictest0-21swapper/120:55:091
121340ksoftirqd/13064-21taskset19:35:431
30599331cyclictest0-21swapper/119:15:531
30599331cyclictest0-21swapper/119:12:331
121550330irq/30-eth0_g0_1221-21kworker/1:221:14:441
121450330irq/29-eth0_g0_1911-21runrttasks20:39:200
121450330irq/29-eth0_g0_1911-21runrttasks20:29:440
121450330irq/29-eth0_g0_1911-21runrttasks20:16:550
121550320irq/30-eth0_g0_0-21swapper/119:21:071
121450320irq/29-eth0_g0_1911-21runrttasks21:04:500
121450320irq/29-eth0_g0_1911-21runrttasks20:26:480
30599311cyclictest0-21swapper/120:10:251
30599311cyclictest0-21swapper/120:03:301
30599311cyclictest0-21swapper/120:03:301
30599311cyclictest0-21swapper/119:39:561
121550310irq/30-eth0_g0_9498-21munin-run20:39:371
121550310irq/30-eth0_g0_0-21swapper/119:49:301
121550290irq/30-eth0_g0_1911-21runrttasks19:25:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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