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2026-05-19 - 13:50

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 Tue May 19, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
759621720sleep1121450irq/29-eth0_g0_11:23:171
1252921440sleep1121450irq/29-eth0_g0_12:12:021
1252921440sleep1121450irq/29-eth0_g0_12:12:021
121630ksoftirqd/195152chrt11:42:110
121630ksoftirqd/195152chrt11:42:110
84682580sleep1121550irq/30-eth0_g0_11:31:421
259212580sleep1121550irq/30-eth0_g0_09:03:441
121580ksoftirqd/1121450irq/29-eth0_g0_09:19:030
121570ksoftirqd/1121450irq/29-eth0_g0_09:50:100
64742550sleep1121550irq/30-eth0_g0_11:11:561
64742550sleep1121550irq/30-eth0_g0_11:11:561
88502510sleep0121450irq/29-eth0_g0_11:35:160
121490ksoftirqd/1121550irq/30-eth0_g0_09:24:331
121470ksoftirqd/1121550irq/30-eth0_g0_10:58:321
121470ksoftirqd/1121450irq/29-eth0_g0_12:38:051
121470ksoftirqd/1121450irq/29-eth0_g0_09:50:431
121460ksoftirqd/1121550irq/30-eth0_g0_10:27:410
121460ksoftirqd/1121450irq/29-eth0_g0_10:05:290
121450450irq/29-eth0_g0_31ksoftirqd/009:31:050
121450ksoftirqd/1121550irq/30-eth0_g0_12:03:521
121450ksoftirqd/1121450irq/29-eth0_g0_12:29:231
121450ksoftirqd/1121450irq/29-eth0_g0_11:57:081
14317994431cyclictest1911-21runrttasks11:07:441
121550440irq/30-eth0_g0_121ksoftirqd/110:48:441
121440ksoftirqd/1121550irq/30-eth0_g0_09:45:271
121440ksoftirqd/1121550irq/30-eth0_g0_09:45:271
121430ksoftirqd/1121450irq/29-eth0_g0_12:23:070
121430ksoftirqd/1121450irq/29-eth0_g0_12:21:281
121430ksoftirqd/1121450irq/29-eth0_g0_12:01:460
1431799428cyclictest22215-21seq08:26:471
121550420irq/30-eth0_g0_1221-21kworker/1:212:14:311
121550420irq/30-eth0_g0_1221-21kworker/1:211:39:001
121550420irq/30-eth0_g0_1221-21kworker/1:211:39:001
121450420irq/29-eth0_g0_121ksoftirqd/110:39:250
121450420irq/29-eth0_g0_121ksoftirqd/110:09:340
121550410irq/30-eth0_g0_121ksoftirqd/110:49:391
121450410irq/29-eth0_g0_31ksoftirqd/011:02:080
121450410irq/29-eth0_g0_13-21kworker/0:111:56:040
121450410irq/29-eth0_g0_121ksoftirqd/111:19:380
121550400irq/30-eth0_g0_121ksoftirqd/111:38:361
121550400irq/30-eth0_g0_121ksoftirqd/109:37:561
121550400irq/30-eth0_g0_121ksoftirqd/109:23:061
121550400irq/30-eth0_g0_0-21swapper/109:53:521
121450400irq/29-eth0_g0_31ksoftirqd/009:17:120
121450400irq/29-eth0_g0_15226-21latency_hist12:38:430
121450400irq/29-eth0_g0_13-21kworker/0:112:30:440
121450400irq/29-eth0_g0_13-21kworker/0:112:05:230
121450400irq/29-eth0_g0_13-21kworker/0:110:18:520
121450400irq/29-eth0_g0_13-21kworker/0:110:18:520
121450400irq/29-eth0_g0_13-21kworker/0:109:37:390
121400ksoftirqd/1121550irq/30-eth0_g0_11:25:270
121400ksoftirqd/1121450irq/29-eth0_g0_10:00:481
14317993911cyclictest0-21swapper/110:24:171
121550390irq/30-eth0_g0_1221-21kworker/1:211:53:321
121550390irq/30-eth0_g0_1221-21kworker/1:211:45:471
121550390irq/30-eth0_g0_1221-21kworker/1:210:42:141
121550390irq/30-eth0_g0_1221-21kworker/1:210:38:431
121550390irq/30-eth0_g0_121ksoftirqd/110:17:281
121450390irq/29-eth0_g0_31ksoftirqd/011:50:140
121450390irq/29-eth0_g0_13-21kworker/0:112:11:000
121450390irq/29-eth0_g0_13-21kworker/0:112:11:000
121450390irq/29-eth0_g0_13-21kworker/0:111:31:330
121450390irq/29-eth0_g0_13-21kworker/0:109:39:170
121390ksoftirqd/1121550irq/30-eth0_g0_08:06:580
121390ksoftirqd/1121550irq/30-eth0_g0_08:06:580
121390ksoftirqd/1121550irq/30-eth0_g0_07:15:330
121390ksoftirqd/1121450irq/29-eth0_g0_07:40:421
1431799382cyclictest22882sleep110:30:131
121550380irq/30-eth0_g0_31ksoftirqd/010:16:400
121550380irq/30-eth0_g0_1221-21kworker/1:209:13:051
121550380irq/30-eth0_g0_1221-21kworker/1:209:13:051
121550380irq/30-eth0_g0_121ksoftirqd/111:14:541
121550380irq/30-eth0_g0_121ksoftirqd/111:01:041
121550380irq/30-eth0_g0_0-21swapper/110:22:001
121550380irq/30-eth0_g0_0-21swapper/110:22:001
121550380irq/30-eth0_g0_0-21swapper/108:03:381
121550380irq/30-eth0_g0_0-21swapper/108:03:381
121450380irq/29-eth0_g0_1911-21runrttasks07:04:250
121450380irq/29-eth0_g0_13-21kworker/0:112:25:150
121450380irq/29-eth0_g0_13-21kworker/0:111:46:510
121450380irq/29-eth0_g0_13-21kworker/0:110:35:590
121450380irq/29-eth0_g0_13-21kworker/0:110:02:070
121380ksoftirqd/1121550irq/30-eth0_g0_09:24:120
121380ksoftirqd/1121450irq/29-eth0_g0_11:26:271
121380ksoftirqd/1121450irq/29-eth0_g0_09:56:080
1431799371cyclictest20402-21grep08:08:431
1431799371cyclictest20402-21grep08:08:431
121550370irq/30-eth0_g0_13-21kworker/0:109:10:090
121550370irq/30-eth0_g0_13-21kworker/0:109:10:090
121550370irq/30-eth0_g0_1221-21kworker/1:211:59:151
121550370irq/30-eth0_g0_1221-21kworker/1:210:11:131
121550370irq/30-eth0_g0_1221-21kworker/1:209:18:021
121450370irq/29-eth0_g0_1431699cyclictest11:15:000
121450370irq/29-eth0_g0_13-21kworker/0:111:08:580
121450370irq/29-eth0_g0_13-21kworker/0:111:08:580
121450370irq/29-eth0_g0_13-21kworker/0:110:54:480
121450370irq/29-eth0_g0_13-21kworker/0:110:45:400
121450370irq/29-eth0_g0_13-21kworker/0:109:44:400
121450370irq/29-eth0_g0_13-21kworker/0:109:44:400
121450370irq/29-eth0_g0_121ksoftirqd/112:25:231
121370ksoftirqd/1121450irq/29-eth0_g0_07:58:221
1431799361cyclictest24423-21sort08:48:441
121450360irq/29-eth0_g0_31ksoftirqd/012:13:470
121450360irq/29-eth0_g0_1911-21runrttasks07:31:250
121450360irq/29-eth0_g0_13-21kworker/0:111:07:190
121450360irq/29-eth0_g0_13-21kworker/0:110:29:100
121360ksoftirqd/114314-21munin-run07:08:441
1431799351cyclictest0-21swapper/109:39:201
1431799351cyclictest0-21swapper/107:31:571
1431799351cyclictest0-21swapper/107:27:181
121550350irq/30-eth0_g0_21915-21latency_hist08:23:441
121550350irq/30-eth0_g0_1221-21kworker/1:209:31:011
121550350irq/30-eth0_g0_0-21swapper/110:05:141
121450350irq/29-eth0_g0_21892-21latency_hist08:23:440
121450350irq/29-eth0_g0_1911-21runrttasks09:05:250
121450350irq/29-eth0_g0_1911-21runrttasks08:54:500
121450350irq/29-eth0_g0_1911-21runrttasks08:37:280
121450350irq/29-eth0_g0_1911-21runrttasks08:17:500
121450350irq/29-eth0_g0_1911-21runrttasks07:59:050
121450350irq/29-eth0_g0_1911-21runrttasks07:59:050
121450350irq/29-eth0_g0_1911-21runrttasks07:49:570
121450350irq/29-eth0_g0_14818-21munin-run07:13:430
121450350irq/29-eth0_g0_13-21kworker/0:110:51:120
1431799341cyclictest21376-21chrt08:18:431
121450340irq/29-eth0_g0_1911-21runrttasks09:00:480
121450340irq/29-eth0_g0_1911-21runrttasks07:45:410
121450340irq/29-eth0_g0_1911-21runrttasks07:38:550
121450340irq/29-eth0_g0_0-21swapper/008:26:060
1431799331cyclictest0-21swapper/107:14:591
121450330irq/29-eth0_g0_1911-21runrttasks08:13:400
121450330irq/29-eth0_g0_0-21swapper/007:37:230
121450330irq/29-eth0_g0_0-21swapper/007:22:560
121330ksoftirqd/1121450irq/29-eth0_g0_08:58:441
1431799321cyclictest17926-21sshd07:43:461
1431799321cyclictest0-21swapper/109:06:541
1431799321cyclictest0-21swapper/108:40:011
1431799321cyclictest0-21swapper/107:34:201
1431799321cyclictest0-21swapper/107:23:101
121450320irq/29-eth0_g0_24387-21munin-run08:48:440
121450320irq/29-eth0_g0_23423-21ls08:38:441
121450320irq/29-eth0_g0_22940-21latency_hist08:33:450
121450320irq/29-eth0_g0_20860-21runrttasks08:13:351
121450320irq/29-eth0_g0_1911-21runrttasks08:50:360
121450320irq/29-eth0_g0_16333-21munin-run07:28:430
1431799311cyclictest0-21swapper/108:48:451
1431799311cyclictest0-21swapper/107:12:081
121450310irq/29-eth0_g0_1911-21runrttasks08:42:340
121450310irq/29-eth0_g0_0-21swapper/007:54:570
121310ksoftirqd/118668-21taskset07:51:351
121550280irq/30-eth0_g0_22939-21cat08:33:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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