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2026-04-17 - 19:54

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 Fri Apr 17, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
585821580sleep1121550irq/30-eth0_g0_09:46:221
54142770sleep0121450irq/29-eth0_g0_09:42:090
121760ksoftirqd/1121550irq/30-eth0_g0_10:39:371
159192670sleep1121550irq/30-eth0_g0_11:25:031
49542630sleep1121450irq/29-eth0_g0_09:37:431
121570ksoftirqd/1121550irq/30-eth0_g0_11:11:011
212402520sleep1121450irq/29-eth0_g0_12:17:451
121520ksoftirqd/1121550irq/30-eth0_g0_10:27:051
2227899491cyclictest1911-21runrttasks07:43:461
121550480irq/30-eth0_g0_2227899cyclictest10:49:371
32822470sleep1121550irq/30-eth0_g0_09:21:001
121550470irq/30-eth0_g0_121ksoftirqd/112:13:331
121550470irq/30-eth0_g0_121ksoftirqd/112:13:331
121550470irq/30-eth0_g0_121ksoftirqd/110:10:551
121550470irq/30-eth0_g0_121ksoftirqd/110:10:551
121550470irq/30-eth0_g0_121ksoftirqd/107:45:321
121450470irq/29-eth0_g0_2227899cyclictest11:38:391
105482470sleep0121450irq/29-eth0_g0_10:32:400
121550460irq/30-eth0_g0_2227899cyclictest12:06:361
121550460irq/30-eth0_g0_121ksoftirqd/112:26:521
121550460irq/30-eth0_g0_121ksoftirqd/110:34:491
231762450sleep1121450irq/29-eth0_g0_12:36:311
121550450irq/30-eth0_g0_2227899cyclictest11:23:181
121550450irq/30-eth0_g0_2227899cyclictest11:23:181
121550450irq/30-eth0_g0_121ksoftirqd/111:40:411
121550450irq/30-eth0_g0_121ksoftirqd/111:00:311
121550450irq/30-eth0_g0_121ksoftirqd/110:59:051
121550450irq/30-eth0_g0_121ksoftirqd/109:25:551
121550450irq/30-eth0_g0_121ksoftirqd/109:14:481
121450450irq/29-eth0_g0_2227899cyclictest09:33:351
2227899441cyclictest0-21swapper/108:42:031
2227899441cyclictest0-21swapper/108:15:491
2227899441cyclictest0-21swapper/107:22:271
121550440irq/30-eth0_g0_1221-21kworker/1:211:18:581
121550440irq/30-eth0_g0_121ksoftirqd/109:50:581
121450440irq/29-eth0_g0_2227899cyclictest11:06:171
121450440irq/29-eth0_g0_0-21swapper/007:09:560
121440ksoftirqd/1121550irq/30-eth0_g0_12:20:181
121440ksoftirqd/1121550irq/30-eth0_g0_09:35:090
121440ksoftirqd/1121450irq/29-eth0_g0_10:15:581
2227899431cyclictest0-21swapper/112:01:161
2227899431cyclictest0-21swapper/110:03:181
2227899431cyclictest0-21swapper/109:06:181
2227899431cyclictest0-21swapper/108:48:281
2227899431cyclictest0-21swapper/108:22:071
2227899431cyclictest0-21swapper/108:07:131
2227899431cyclictest0-21swapper/107:52:081
2227899431cyclictest0-21swapper/107:17:481
121550430irq/30-eth0_g0_121ksoftirqd/111:50:111
121550430irq/30-eth0_g0_121ksoftirqd/111:45:111
121550430irq/30-eth0_g0_121ksoftirqd/111:31:541
121550430irq/30-eth0_g0_121ksoftirqd/110:23:411
121550430irq/30-eth0_g0_121ksoftirqd/109:41:441
121450430irq/29-eth0_g0_2227899cyclictest09:57:541
121450430irq/29-eth0_g0_1911-21runrttasks11:38:060
121450430irq/29-eth0_g0_13-21kworker/0:112:06:370
2227899421cyclictest0-21swapper/108:58:131
2227899421cyclictest0-21swapper/108:52:181
2227899421cyclictest0-21swapper/108:39:311
2227899421cyclictest0-21swapper/107:27:221
2227899421cyclictest0-21swapper/107:13:391
2227899420cyclictest0-21swapper/109:00:281
121550420irq/30-eth0_g0_121ksoftirqd/112:30:151
121550420irq/30-eth0_g0_121ksoftirqd/110:42:531
121550420irq/30-eth0_g0_121ksoftirqd/108:29:571
121550420irq/30-eth0_g0_0-21swapper/111:57:451
121450420irq/29-eth0_g0_13-21kworker/0:109:14:280
2227899411cyclictest0-21swapper/107:38:411
121550410irq/30-eth0_g0_121ksoftirqd/110:52:191
121550410irq/30-eth0_g0_121ksoftirqd/109:17:531
121550410irq/30-eth0_g0_121ksoftirqd/108:12:101
121450410irq/29-eth0_g0_15536-21seq11:21:300
121450410irq/29-eth0_g0_15536-21seq11:21:300
121450410irq/29-eth0_g0_13-21kworker/0:111:59:390
121450410irq/29-eth0_g0_13-21kworker/0:111:03:380
121450410irq/29-eth0_g0_13-21kworker/0:109:54:370
22278994013cyclictest30581-21runrttasks08:30:481
121550400irq/30-eth0_g0_121ksoftirqd/110:07:151
121450400irq/29-eth0_g0_13-21kworker/0:112:04:540
121450400irq/29-eth0_g0_13-21kworker/0:111:14:450
121450400irq/29-eth0_g0_13-21kworker/0:110:18:200
121450400irq/29-eth0_g0_0-21swapper/011:31:160
121400ksoftirqd/12227899cyclictest07:58:521
2227899390cyclictest0-21swapper/108:02:141
121450390irq/29-eth0_g0_13-21kworker/0:112:38:380
121450390irq/29-eth0_g0_13-21kworker/0:111:09:000
121450390irq/29-eth0_g0_13-21kworker/0:110:03:330
121450390irq/29-eth0_g0_0-21swapper/011:18:190
121450390irq/29-eth0_g0_0-21swapper/010:29:150
121550380irq/30-eth0_g0_1911-21runrttasks11:40:450
121550380irq/30-eth0_g0_1911-21runrttasks10:55:150
121450380irq/29-eth0_g0_9726-21latency_hist10:24:560
121450380irq/29-eth0_g0_13-21kworker/0:112:34:260
121450380irq/29-eth0_g0_0-21swapper/010:40:260
121450380irq/29-eth0_g0_0-21swapper/009:25:480
121450370irq/29-eth0_g0_13-21kworker/0:110:35:150
121450370irq/29-eth0_g0_0-21swapper/012:23:470
121450370irq/29-eth0_g0_0-21swapper/012:15:250
121450370irq/29-eth0_g0_0-21swapper/011:53:500
121450370irq/29-eth0_g0_0-21swapper/010:05:080
121450370irq/29-eth0_g0_0-21swapper/009:34:560
121450360irq/29-eth0_g0_13-21kworker/0:110:52:470
121450360irq/29-eth0_g0_13-21kworker/0:110:46:080
121450360irq/29-eth0_g0_13-21kworker/0:109:45:260
121450360irq/29-eth0_g0_0-21swapper/012:11:530
121450360irq/29-eth0_g0_0-21swapper/012:11:530
121360ksoftirqd/1121550irq/30-eth0_g0_10:11:260
121360ksoftirqd/1121550irq/30-eth0_g0_10:11:260
121450350irq/29-eth0_g0_0-21swapper/012:27:210
121450350irq/29-eth0_g0_0-21swapper/011:45:430
121450350irq/29-eth0_g0_0-21swapper/011:27:100
67612340sleep0121450irq/29-eth0_g0_09:55:030
121550340irq/30-eth0_g0_0-21swapper/007:59:560
121450340irq/29-eth0_g0_28236-21runrttasks08:08:100
121450330irq/29-eth0_g0_667-21runrttasks08:55:400
121450330irq/29-eth0_g0_32302-21runrttasks08:48:020
121450330irq/29-eth0_g0_29596-21runrttasks08:21:110
121450330irq/29-eth0_g0_2716-21runrttasks09:15:190
121450330irq/29-eth0_g0_22385-21runrttasks07:10:180
121450330irq/29-eth0_g0_1567-21munin-run09:04:570
121450330irq/29-eth0_g0_13-21kworker/0:109:24:540
2227899321cyclictest0-21swapper/107:31:111
121450320irq/29-eth0_g0_24768-21runrttasks07:34:170
121450320irq/29-eth0_g0_1652-21runrttasks09:05:030
121450320irq/29-eth0_g0_0-21swapper/008:53:310
121550310irq/30-eth0_g0_1911-21runrttasks08:35:440
121550310irq/30-eth0_g0_1911-21runrttasks07:07:281
121550310irq/30-eth0_g0_0-21swapper/008:41:000
121450310irq/29-eth0_g0_0-21swapper/007:43:460
121450310irq/29-eth0_g0_0-21swapper/007:36:320
121450300irq/29-eth0_g0_23471-21seq07:21:060
121450300irq/29-eth0_g0_0-21swapper/008:03:080
121450300irq/29-eth0_g0_0-21swapper/007:54:560
121450300irq/29-eth0_g0_0-21swapper/007:49:280
121450300irq/29-eth0_g0_0-21swapper/007:27:070
121450300irq/29-eth0_g0_0-21swapper/007:16:070
121450290irq/29-eth0_g0_0-21swapper/008:25:420
121450290irq/29-eth0_g0_0-21swapper/008:17:100
121450290irq/29-eth0_g0_0-21swapper/008:09:570
121550280irq/30-eth0_g0_0-21swapper/008:31:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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