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2026-05-02 - 03:04

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 Sat May 02, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2123521580sleep1121450irq/29-eth0_g0_23:45:271
2500721260sleep1121450irq/29-eth0_g0_00:23:041
1211120ksoftirqd/1121550irq/30-eth0_g0_00:24:231
1211040ksoftirqd/1121550irq/30-eth0_g0_23:10:101
121900ksoftirqd/1121550irq/30-eth0_g0_22:09:210
121670ksoftirqd/1121550irq/30-eth0_g0_23:50:100
121670ksoftirqd/1121550irq/30-eth0_g0_23:50:100
167182660chrt121450irq/29-eth0_g0_23:00:430
121560ksoftirqd/1121550irq/30-eth0_g0_22:37:091
146202530sleep0121550irq/30-eth0_g0_22:39:430
121520ksoftirqd/1121550irq/30-eth0_g0_23:57:481
121520ksoftirqd/1121550irq/30-eth0_g0_00:23:150
121510ksoftirqd/1121450irq/29-eth0_g0_23:33:520
163242500sleep0121550irq/30-eth0_g0_22:57:000
121500ksoftirqd/1121550irq/30-eth0_g0_23:16:261
121460ksoftirqd/1121550irq/30-eth0_g0_22:03:391
257182450sleep1121450irq/29-eth0_g0_00:29:311
121550450irq/30-eth0_g0_1221-21kworker/1:222:24:371
121450440irq/29-eth0_g0_1911-21runrttasks19:08:020
121440ksoftirqd/1121550irq/30-eth0_g0_23:21:171
121440ksoftirqd/1121550irq/30-eth0_g0_21:59:011
121440ksoftirqd/1121450irq/29-eth0_g0_21:49:231
121440ksoftirqd/1121450irq/29-eth0_g0_21:10:441
121440ksoftirqd/1121450irq/29-eth0_g0_00:08:501
121550430irq/30-eth0_g0_1221-21kworker/1:223:07:271
121550430irq/30-eth0_g0_1221-21kworker/1:223:07:271
121430ksoftirqd/1121550irq/30-eth0_g0_00:13:141
121430ksoftirqd/1121450irq/29-eth0_g0_22:11:050
121430ksoftirqd/1121450irq/29-eth0_g0_21:39:241
121550420irq/30-eth0_g0_1221-21kworker/1:221:32:281
121450420irq/29-eth0_g0_13-21kworker/0:121:24:240
121550410irq/30-eth0_g0_121ksoftirqd/122:37:200
121410ksoftirqd/1121550irq/30-eth0_g0_23:18:010
121450400irq/29-eth0_g0_31ksoftirqd/023:59:550
121450400irq/29-eth0_g0_31ksoftirqd/023:35:540
121450400irq/29-eth0_g0_13-21kworker/0:122:01:110
121450400irq/29-eth0_g0_13-21kworker/0:121:43:010
121400ksoftirqd/1121550irq/30-eth0_g0_23:48:310
121400ksoftirqd/1121550irq/30-eth0_g0_22:48:391
121400ksoftirqd/1121550irq/30-eth0_g0_21:11:160
121550390irq/30-eth0_g0_121ksoftirqd/123:53:161
121550390irq/30-eth0_g0_121ksoftirqd/123:53:161
121550390irq/30-eth0_g0_0-21swapper/122:30:401
121550390irq/30-eth0_g0_0-21swapper/122:30:401
121450390irq/29-eth0_g0_31ksoftirqd/021:52:300
121450390irq/29-eth0_g0_23734-21taskset00:10:010
121450390irq/29-eth0_g0_13-21kworker/0:123:25:570
121450390irq/29-eth0_g0_13-21kworker/0:122:33:090
121450390irq/29-eth0_g0_13-21kworker/0:122:33:090
121450390irq/29-eth0_g0_13-21kworker/0:122:18:490
121450390irq/29-eth0_g0_13-21kworker/0:122:18:490
121450390irq/29-eth0_g0_13-21kworker/0:121:24:520
121450390irq/29-eth0_g0_13-21kworker/0:100:04:350
121450390irq/29-eth0_g0_121ksoftirqd/121:30:560
121390ksoftirqd/1121550irq/30-eth0_g0_20:01:590
121390ksoftirqd/1121550irq/30-eth0_g0_20:01:590
121390ksoftirqd/1121550irq/30-eth0_g0_00:28:540
121550380irq/30-eth0_g0_1911-21runrttasks19:04:341
121550380irq/30-eth0_g0_1221-21kworker/1:223:36:311
121550380irq/30-eth0_g0_1221-21kworker/1:223:01:161
121550380irq/30-eth0_g0_1221-21kworker/1:222:14:401
121550380irq/30-eth0_g0_1221-21kworker/1:222:14:401
121550380irq/30-eth0_g0_1221-21kworker/1:221:20:351
121550380irq/30-eth0_g0_121ksoftirqd/122:56:501
121450380irq/29-eth0_g0_1911-21runrttasks23:19:340
121450380irq/29-eth0_g0_1911-21runrttasks00:30:270
121450380irq/29-eth0_g0_13-21kworker/0:123:58:150
121450380irq/29-eth0_g0_13-21kworker/0:123:07:350
121450380irq/29-eth0_g0_13-21kworker/0:123:07:350
121450380irq/29-eth0_g0_13-21kworker/0:122:49:270
121450380irq/29-eth0_g0_13-21kworker/0:122:46:380
121450380irq/29-eth0_g0_13-21kworker/0:122:24:460
121450380irq/29-eth0_g0_13-21kworker/0:122:19:440
121450380irq/29-eth0_g0_13-21kworker/0:121:36:030
121450380irq/29-eth0_g0_121ksoftirqd/122:44:171
121450380irq/29-eth0_g0_121ksoftirqd/122:22:521
121380ksoftirqd/1121550irq/30-eth0_g0_20:28:510
121380ksoftirqd/1121550irq/30-eth0_g0_19:54:180
121380ksoftirqd/1121450irq/29-eth0_g0_20:39:081
2569399371cyclictest25906-21sshd19:11:021
2569399371cyclictest1911-21runrttasks21:08:321
121550370irq/30-eth0_g0_1221-21kworker/1:222:09:371
121550370irq/30-eth0_g0_1221-21kworker/1:222:04:421
121550370irq/30-eth0_g0_1221-21kworker/1:200:00:241
121550370irq/30-eth0_g0_0-21swapper/122:50:331
121450370irq/29-eth0_g0_31ksoftirqd/023:40:200
121450370irq/29-eth0_g0_1911-21runrttasks00:18:020
121450370irq/29-eth0_g0_1911-21runrttasks00:18:020
121450370irq/29-eth0_g0_13-21kworker/0:123:09:410
121450370irq/29-eth0_g0_13-21kworker/0:121:56:150
121450370irq/29-eth0_g0_13-21kworker/0:121:15:110
2569399361cyclictest191642sleep123:24:521
2569399360cyclictest0-21swapper/121:52:511
121550360irq/30-eth0_g0_1221-21kworker/1:223:31:011
121550360irq/30-eth0_g0_1221-21kworker/1:221:25:591
121550360irq/30-eth0_g0_1221-21kworker/1:200:34:331
121450360irq/29-eth0_g0_2946-21sort20:44:240
121450360irq/29-eth0_g0_1911-21runrttasks21:00:140
121450360irq/29-eth0_g0_1911-21runrttasks20:38:010
121450360irq/29-eth0_g0_1911-21runrttasks20:13:570
121450360irq/29-eth0_g0_1911-21runrttasks19:45:410
121450360irq/29-eth0_g0_1911-21runrttasks19:41:090
121450360irq/29-eth0_g0_1911-21runrttasks19:32:050
121450360irq/29-eth0_g0_1911-21runrttasks19:13:510
121450360irq/29-eth0_g0_1911-21runrttasks00:34:300
121450360irq/29-eth0_g0_1904-21sort20:34:240
121450360irq/29-eth0_g0_121ksoftirqd/123:39:561
121450360irq/29-eth0_g0_121ksoftirqd/121:43:511
2569399351cyclictest0-21swapper/121:03:541
2569399351cyclictest0-21swapper/120:46:521
2569399351cyclictest0-21swapper/120:06:361
121550350irq/30-eth0_g0_1221-21kworker/1:221:14:461
121550350irq/30-eth0_g0_1221-21kworker/1:200:18:341
121550350irq/30-eth0_g0_1221-21kworker/1:200:18:341
121450350irq/29-eth0_g0_2569299cyclictest21:45:420
121450350irq/29-eth0_g0_1911-21runrttasks20:58:200
121450350irq/29-eth0_g0_1911-21runrttasks20:48:270
121450350irq/29-eth0_g0_1911-21runrttasks20:08:330
2569399341cyclictest272482sleep119:24:241
2569399341cyclictest0-21swapper/120:41:151
2569399341cyclictest0-21swapper/120:26:381
2569399341cyclictest0-21swapper/119:39:031
121550340irq/30-eth0_g0_1900-21latency_hist20:34:241
121550340irq/30-eth0_g0_0-21swapper/119:47:461
121450340irq/29-eth0_g0_1911-21runrttasks20:18:400
121450340irq/29-eth0_g0_1911-21runrttasks19:57:320
121450340irq/29-eth0_g0_1911-21runrttasks19:23:090
121450340irq/29-eth0_g0_0-21swapper/021:09:240
2569399330cyclictest0-21swapper/119:51:131
121450330irq/29-eth0_g0_1911-21runrttasks20:21:520
2569399321cyclictest0-21swapper/120:50:481
2569399321cyclictest0-21swapper/120:50:481
2569399321cyclictest0-21swapper/120:22:141
2569399321cyclictest0-21swapper/120:17:051
2569399321cyclictest0-21swapper/119:39:341
2569399321cyclictest0-21swapper/119:32:261
2569399321cyclictest0-21swapper/119:15:591
121450320irq/29-eth0_g0_28556-21chrt19:37:240
121450320irq/29-eth0_g0_1911-21runrttasks19:25:220
121320ksoftirqd/131955-21taskset20:10:481
2569399311cyclictest0-21swapper/120:03:281
2569399311cyclictest0-21swapper/120:03:281
2569399311cyclictest0-21swapper/119:27:221
121550310irq/30-eth0_g0_0-21swapper/119:55:321
121450310irq/29-eth0_g0_3895-21chrt20:54:230
121450310irq/29-eth0_g0_3895-21chrt20:54:230
2569399301cyclictest0-21swapper/120:56:231
121450300irq/29-eth0_g0_1911-21runrttasks19:15:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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