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2026-04-19 - 21:21

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 Sun Apr 19, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1898921410sleep1121550irq/30-eth0_g0_10:46:251
121850ksoftirqd/1121450irq/29-eth0_g0_12:23:510
121760ksoftirqd/1121550irq/30-eth0_g0_11:58:320
121760ksoftirqd/1121550irq/30-eth0_g0_11:44:530
209322750sleep1121450irq/29-eth0_g0_11:05:221
159782720sleep1121550irq/30-eth0_g0_10:16:531
121690ksoftirqd/1121550irq/30-eth0_g0_10:57:381
121690ksoftirqd/1121550irq/30-eth0_g0_10:11:221
121550530irq/30-eth0_g0_121ksoftirqd/110:41:321
214932520sleep1121450irq/29-eth0_g0_11:10:591
121550480irq/30-eth0_g0_1221-21kworker/1:211:27:081
121480ksoftirqd/1121550irq/30-eth0_g0_11:16:081
121470ksoftirqd/1121550irq/30-eth0_g0_11:50:250
121470ksoftirqd/1121550irq/30-eth0_g0_10:34:021
121470ksoftirqd/1121450irq/29-eth0_g0_09:02:321
121460ksoftirqd/1121550irq/30-eth0_g0_09:35:311
121450ksoftirqd/1121450irq/29-eth0_g0_11:49:371
121450ksoftirqd/1121450irq/29-eth0_g0_09:16:201
121550440irq/30-eth0_g0_121ksoftirqd/110:54:481
121440ksoftirqd/1121450irq/29-eth0_g0_07:24:351
291592430sleep1121550irq/30-eth0_g0_12:26:301
121550430irq/30-eth0_g0_121ksoftirqd/112:02:481
217212420sleep0121450irq/29-eth0_g0_11:13:390
121450420irq/29-eth0_g0_13-21kworker/0:109:50:280
121420ksoftirqd/1121550irq/30-eth0_g0_11:43:160
121420ksoftirqd/1121450irq/29-eth0_g0_12:38:511
121420ksoftirqd/1121450irq/29-eth0_g0_11:43:141
121420ksoftirqd/1121450irq/29-eth0_g0_11:34:021
121420ksoftirqd/1121450irq/29-eth0_g0_09:46:271
2931699416cyclictest25921-21date11:54:521
121550410irq/30-eth0_g0_30302-21runrttasks07:19:331
121550410irq/30-eth0_g0_121ksoftirqd/112:09:151
121450410irq/29-eth0_g0_2931599cyclictest09:09:570
121550400irq/30-eth0_g0_1911-21runrttasks10:07:570
121550400irq/30-eth0_g0_1221-21kworker/1:209:23:441
121450400irq/29-eth0_g0_2931599cyclictest11:07:340
121450400irq/29-eth0_g0_2931599cyclictest10:32:390
121450400irq/29-eth0_g0_13-21kworker/0:112:04:560
121450400irq/29-eth0_g0_13-21kworker/0:110:47:110
121400ksoftirqd/12931699cyclictest08:34:521
121550390irq/30-eth0_g0_1221-21kworker/1:211:00:511
121550390irq/30-eth0_g0_1221-21kworker/1:210:23:421
121450390irq/29-eth0_g0_13-21kworker/0:112:00:230
121450390irq/29-eth0_g0_13-21kworker/0:111:00:540
121450390irq/29-eth0_g0_13-21kworker/0:110:17:290
121450390irq/29-eth0_g0_13-21kworker/0:109:40:420
121450390irq/29-eth0_g0_10955-21seq09:27:370
121550380irq/30-eth0_g0_29311-21munin-run07:09:521
121550380irq/30-eth0_g0_1221-21kworker/1:212:30:101
121550380irq/30-eth0_g0_1221-21kworker/1:211:35:481
121550380irq/30-eth0_g0_1221-21kworker/1:209:33:111
121550380irq/30-eth0_g0_0-21swapper/109:40:231
121450380irq/29-eth0_g0_31ksoftirqd/010:53:000
121450380irq/29-eth0_g0_2931599cyclictest12:35:590
121450380irq/29-eth0_g0_13-21kworker/0:112:26:090
121450380irq/29-eth0_g0_13-21kworker/0:111:21:590
121450380irq/29-eth0_g0_13-21kworker/0:110:38:030
121450380irq/29-eth0_g0_13-21kworker/0:110:23:500
121380ksoftirqd/1121550irq/30-eth0_g0_11:16:210
121380ksoftirqd/1121550irq/30-eth0_g0_10:10:350
121380ksoftirqd/1121450irq/29-eth0_g0_08:46:261
121380ksoftirqd/1121450irq/29-eth0_g0_08:46:261
121380ksoftirqd/1121450irq/29-eth0_g0_07:31:171
2931699372cyclictest4534-21munin-run08:24:521
121550370irq/30-eth0_g0_1221-21kworker/1:212:24:421
121550370irq/30-eth0_g0_1221-21kworker/1:209:12:021
121550370irq/30-eth0_g0_0-21swapper/112:11:331
121550370irq/30-eth0_g0_0-21swapper/112:11:331
121550370irq/30-eth0_g0_0-21swapper/109:50:171
121450370irq/29-eth0_g0_31ksoftirqd/009:16:340
121450370irq/29-eth0_g0_28970-21runrttasks07:06:000
121450370irq/29-eth0_g0_1911-21runrttasks10:03:280
121450370irq/29-eth0_g0_13-21kworker/0:111:36:260
121450370irq/29-eth0_g0_13-21kworker/0:109:55:430
121450370irq/29-eth0_g0_121ksoftirqd/111:24:501
121370ksoftirqd/1121450irq/29-eth0_g0_07:39:021
121550360irq/30-eth0_g0_1221-21kworker/1:211:59:331
121550360irq/30-eth0_g0_1221-21kworker/1:210:35:521
121550360irq/30-eth0_g0_1221-21kworker/1:210:28:051
121550360irq/30-eth0_g0_1221-21kworker/1:210:28:051
121550360irq/30-eth0_g0_1221-21kworker/1:210:00:371
121550360irq/30-eth0_g0_121ksoftirqd/109:58:311
121450360irq/29-eth0_g0_13-21kworker/0:112:33:520
121450360irq/29-eth0_g0_13-21kworker/0:112:13:520
121450360irq/29-eth0_g0_13-21kworker/0:112:13:520
121450360irq/29-eth0_g0_121ksoftirqd/110:09:471
121360ksoftirqd/1121450irq/29-eth0_g0_07:54:341
121550350irq/30-eth0_g0_1221-21kworker/1:209:28:451
121450350irq/29-eth0_g0_2931599cyclictest09:33:430
121450350irq/29-eth0_g0_2931599cyclictest08:22:120
121450350irq/29-eth0_g0_13-21kworker/0:110:41:320
121450350irq/29-eth0_g0_13-21kworker/0:109:21:510
121450350irq/29-eth0_g0_0-21swapper/009:47:030
2931699341cyclictest9141-21latency_hist09:09:521
2931699341cyclictest6604-21grep08:44:531
121550340irq/30-eth0_g0_1911-21runrttasks07:24:190
121550340irq/30-eth0_g0_0-21swapper/112:14:581
121450340irq/29-eth0_g0_4766-21runrttasks08:26:440
121450340irq/29-eth0_g0_13-21kworker/0:111:32:040
121450340irq/29-eth0_g0_0-21swapper/011:25:430
121450340irq/29-eth0_g0_0-21swapper/009:37:590
121340ksoftirqd/1121550irq/30-eth0_g0_12:18:100
2931699331cyclictest6093-21latency_hist08:39:531
2931699331cyclictest4022-21taskset08:19:521
2931699331cyclictest29874-21chrt07:14:521
2931699331cyclictest0-21swapper/107:45:151
121550330irq/30-eth0_g0_0-21swapper/108:26:271
121450330irq/29-eth0_g0_2514-21cat08:04:520
121450330irq/29-eth0_g0_0-21swapper/010:56:330
121550320irq/30-eth0_g0_0-21swapper/107:27:551
121450320irq/29-eth0_g0_424-21latency_hist07:44:520
121450320irq/29-eth0_g0_3513-21latency_hist08:14:530
121450320irq/29-eth0_g0_0-21swapper/010:27:500
121450320irq/29-eth0_g0_0-21swapper/010:27:500
121320ksoftirqd/17531-21taskset08:54:151
121320ksoftirqd/17531-21taskset08:54:151
121320ksoftirqd/11724-21taskset07:57:021
121320ksoftirqd/1121550irq/30-eth0_g0_08:36:410
2931699311cyclictest2731-21sshd08:06:451
121550310irq/30-eth0_g0_1911-21runrttasks08:40:020
121550310irq/30-eth0_g0_0-21swapper/007:29:520
121450310irq/29-eth0_g0_2931599cyclictest07:59:460
121310ksoftirqd/1121550irq/30-eth0_g0_08:30:180
121310ksoftirqd/1121450irq/29-eth0_g0_08:55:131
121310ksoftirqd/1121450irq/29-eth0_g0_07:44:471
121450300irq/29-eth0_g0_7827-21sshd08:56:450
121450300irq/29-eth0_g0_0-21swapper/008:45:300
121450300irq/29-eth0_g0_0-21swapper/008:45:300
121450300irq/29-eth0_g0_0-21swapper/007:51:270
121450300irq/29-eth0_g0_0-21swapper/007:37:030
121450300irq/29-eth0_g0_0-21swapper/007:34:520
121450300irq/29-eth0_g0_0-21swapper/007:14:520
121550290irq/30-eth0_g0_2495-21latency_hist08:04:521
121550290irq/30-eth0_g0_1911-21runrttasks08:07:190
121450290irq/29-eth0_g0_0-21swapper/009:05:120
121450290irq/29-eth0_g0_0-21swapper/009:01:510
121450290irq/29-eth0_g0_0-21swapper/008:53:200
121450290irq/29-eth0_g0_0-21swapper/008:53:200
121450290irq/29-eth0_g0_0-21swapper/008:15:110
121450290irq/29-eth0_g0_0-21swapper/007:46:150
121450290irq/29-eth0_g0_0-21swapper/007:16:000
121550260irq/30-eth0_g0_0-21swapper/108:11:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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