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2026-04-30 - 00:02

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 Wed Apr 29, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1301921600sleep1121450irq/29-eth0_g0_09:54:141
1211070ksoftirqd/1121550irq/30-eth0_g0_12:34:391
266762780sleep1121450irq/29-eth0_g0_12:08:401
90162590sleep0121450irq/29-eth0_g0_09:14:300
121540ksoftirqd/1121550irq/30-eth0_g0_10:09:041
132312510chrt121450irq/29-eth0_g0_09:55:471
121510ksoftirqd/1121550irq/30-eth0_g0_11:47:401
121510ksoftirqd/1121450irq/29-eth0_g0_09:14:501
121500ksoftirqd/1121550irq/30-eth0_g0_11:06:201
121480ksoftirqd/1121550irq/30-eth0_g0_09:46:161
261152470sleep0121450irq/29-eth0_g0_12:03:040
121470ksoftirqd/1121450irq/29-eth0_g0_10:16:501
121470ksoftirqd/1121450irq/29-eth0_g0_10:16:501
121470ksoftirqd/1121450irq/29-eth0_g0_08:37:441
121470ksoftirqd/1121450irq/29-eth0_g0_07:31:021
121460ksoftirqd/1121450irq/29-eth0_g0_12:12:071
121550450irq/30-eth0_g0_121ksoftirqd/112:03:121
121450ksoftirqd/1121550irq/30-eth0_g0_11:36:181
121550420irq/30-eth0_g0_121ksoftirqd/109:13:141
121450420irq/29-eth0_g0_1911-21runrttasks07:08:490
121550410irq/30-eth0_g0_209522sleep111:12:001
121550410irq/30-eth0_g0_1221-21kworker/1:211:56:241
121550410irq/30-eth0_g0_121ksoftirqd/110:33:151
121450410irq/29-eth0_g0_31ksoftirqd/010:02:360
121450410irq/29-eth0_g0_1911-21runrttasks09:07:170
121450410irq/29-eth0_g0_13-21kworker/0:111:58:490
121450410irq/29-eth0_g0_13-21kworker/0:111:45:540
121450410irq/29-eth0_g0_13-21kworker/0:111:17:350
121450410irq/29-eth0_g0_13-21kworker/0:110:09:590
121410ksoftirqd/1121550irq/30-eth0_g0_11:07:060
121410ksoftirqd/1121550irq/30-eth0_g0_11:01:560
121410ksoftirqd/1121550irq/30-eth0_g0_10:06:430
121410ksoftirqd/1121450irq/29-eth0_g0_11:51:451
121410ksoftirqd/1121450irq/29-eth0_g0_10:59:021
121410ksoftirqd/1121450irq/29-eth0_g0_10:00:021
292622400sleep0121450irq/29-eth0_g0_07:14:300
2870599401cyclictest18130-21cat10:44:291
121550400irq/30-eth0_g0_121ksoftirqd/110:13:101
121550400irq/30-eth0_g0_0-21swapper/111:18:441
121550400irq/30-eth0_g0_0-21swapper/110:54:041
121450400irq/29-eth0_g0_13-21kworker/0:112:37:240
121450400irq/29-eth0_g0_13-21kworker/0:110:48:070
121450400irq/29-eth0_g0_13-21kworker/0:110:30:280
121450400irq/29-eth0_g0_13-21kworker/0:109:45:110
121450400irq/29-eth0_g0_13-21kworker/0:109:42:330
121450400irq/29-eth0_g0_13-21kworker/0:109:17:590
121450400irq/29-eth0_g0_10093-21chrt09:24:390
121400ksoftirqd/1121550irq/30-eth0_g0_12:09:550
121400ksoftirqd/1121550irq/30-eth0_g0_11:39:260
121400ksoftirqd/1121550irq/30-eth0_g0_10:47:101
121400ksoftirqd/1121550irq/30-eth0_g0_09:30:080
121400ksoftirqd/1121550irq/30-eth0_g0_08:37:010
121550390irq/30-eth0_g0_1221-21kworker/1:211:21:371
121550390irq/30-eth0_g0_1221-21kworker/1:209:21:201
121550390irq/30-eth0_g0_1221-21kworker/1:209:21:201
121550390irq/30-eth0_g0_121ksoftirqd/111:32:131
121550390irq/30-eth0_g0_121ksoftirqd/111:32:131
121550390irq/30-eth0_g0_121ksoftirqd/111:28:561
121550390irq/30-eth0_g0_0-21swapper/110:59:451
121450390irq/29-eth0_g0_7977-21latency_hist09:04:290
121450390irq/29-eth0_g0_1911-21runrttasks08:56:520
121450390irq/29-eth0_g0_13-21kworker/0:111:50:440
121450390irq/29-eth0_g0_13-21kworker/0:111:43:440
121450390irq/29-eth0_g0_13-21kworker/0:111:29:410
121450390irq/29-eth0_g0_13-21kworker/0:111:29:410
121450390irq/29-eth0_g0_13-21kworker/0:109:20:380
121450390irq/29-eth0_g0_13-21kworker/0:109:20:380
121450390irq/29-eth0_g0_121ksoftirqd/112:17:360
121390ksoftirqd/1121550irq/30-eth0_g0_12:27:440
121390ksoftirqd/1121550irq/30-eth0_g0_11:19:510
121390ksoftirqd/1121550irq/30-eth0_g0_10:25:370
121390ksoftirqd/1121550irq/30-eth0_g0_10:15:280
121390ksoftirqd/1121550irq/30-eth0_g0_10:15:280
121390ksoftirqd/1121550irq/30-eth0_g0_08:15:180
121390ksoftirqd/1121550irq/30-eth0_g0_07:24:530
121390ksoftirqd/1121550irq/30-eth0_g0_07:24:530
121390ksoftirqd/1121450irq/29-eth0_g0_10:26:251
121390ksoftirqd/1121450irq/29-eth0_g0_08:51:211
121390ksoftirqd/1121450irq/29-eth0_g0_08:21:521
121390ksoftirqd/1121450irq/29-eth0_g0_08:04:101
121390ksoftirqd/1121450irq/29-eth0_g0_07:39:351
121550380irq/30-eth0_g0_13-21kworker/0:110:55:110
121550380irq/30-eth0_g0_1221-21kworker/1:212:31:481
121550380irq/30-eth0_g0_1221-21kworker/1:212:21:591
121550380irq/30-eth0_g0_1221-21kworker/1:209:38:321
121550380irq/30-eth0_g0_121ksoftirqd/109:27:031
121550380irq/30-eth0_g0_0-21swapper/110:35:441
121450380irq/29-eth0_g0_8479-21diskmemload10:19:550
121450380irq/29-eth0_g0_1911-21runrttasks08:50:100
121450380irq/29-eth0_g0_1911-21runrttasks07:46:450
121450380irq/29-eth0_g0_13-21kworker/0:112:31:310
121450380irq/29-eth0_g0_13-21kworker/0:112:20:400
121450380irq/29-eth0_g0_13-21kworker/0:112:07:590
121450380irq/29-eth0_g0_13-21kworker/0:111:14:030
121450380irq/29-eth0_g0_13-21kworker/0:110:44:160
121380ksoftirqd/1121550irq/30-eth0_g0_09:55:590
121380ksoftirqd/1121450irq/29-eth0_g0_12:27:031
121380ksoftirqd/1121450irq/29-eth0_g0_11:41:011
121380ksoftirqd/1121450irq/29-eth0_g0_08:44:501
121380ksoftirqd/1121450irq/29-eth0_g0_08:44:501
121380ksoftirqd/1121450irq/29-eth0_g0_08:40:301
121380ksoftirqd/1121450irq/29-eth0_g0_08:24:581
121550370irq/30-eth0_g0_1221-21kworker/1:209:29:591
121450370irq/29-eth0_g0_31ksoftirqd/009:51:030
121450370irq/29-eth0_g0_13-21kworker/0:111:25:570
121450370irq/29-eth0_g0_13-21kworker/0:110:50:400
121450370irq/29-eth0_g0_121ksoftirqd/110:20:191
121550360irq/30-eth0_g0_28700-21munin-run07:09:291
121550360irq/30-eth0_g0_1221-21kworker/1:212:15:251
121550360irq/30-eth0_g0_1221-21kworker/1:209:43:551
121450360irq/29-eth0_g0_1911-21runrttasks08:41:330
121450360irq/29-eth0_g0_1911-21runrttasks07:40:510
121450360irq/29-eth0_g0_13-21kworker/0:110:36:080
121450360irq/29-eth0_g0_13-21kworker/0:109:34:420
2870599351cyclictest0-21swapper/108:07:551
2870599351cyclictest0-21swapper/107:50:341
2870599351cyclictest0-21swapper/107:20:331
2870599351cyclictest0-21swapper/107:14:261
121450350irq/29-eth0_g0_1911-21runrttasks07:29:490
121450350irq/29-eth0_g0_1911-21runrttasks07:17:580
2870599341cyclictest0-21swapper/108:13:461
121450340irq/29-eth0_g0_4930-21latency_hist08:34:300
121450340irq/29-eth0_g0_3920-21ls08:24:290
121450340irq/29-eth0_g0_31672-21chrt07:38:340
121450340irq/29-eth0_g0_1911-21runrttasks07:20:140
121340ksoftirqd/17387-21taskset08:58:361
2870599331cyclictest82232sleep109:06:341
2870599331cyclictest0-21swapper/107:25:591
2870599331cyclictest0-21swapper/107:25:591
121450330irq/29-eth0_g0_6186-21chrt08:46:280
121450330irq/29-eth0_g0_6186-21chrt08:46:280
121450330irq/29-eth0_g0_2833-21runrttasks08:13:460
121450330irq/29-eth0_g0_1911-21runrttasks08:15:001
121450330irq/29-eth0_g0_1911-21runrttasks08:06:230
121450330irq/29-eth0_g0_0-21swapper/007:59:290
121330ksoftirqd/132458-21taskset07:45:531
2870599321cyclictest0-21swapper/107:34:471
121450320irq/29-eth0_g0_4097-21runrttasks08:25:450
121450320irq/29-eth0_g0_1911-21runrttasks08:00:250
121450320irq/29-eth0_g0_1911-21runrttasks07:51:560
121320ksoftirqd/1121450irq/29-eth0_g0_07:56:581
2870599311cyclictest0-21swapper/109:00:331
2870599311cyclictest0-21swapper/108:33:401
2870599301cyclictest0-21swapper/107:18:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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