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2026-08-12 - 14:49

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Wed Aug 12, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133621400sleep1121750irq/30-eth0_g0_11:32:541
1211070ksoftirqd/1121750irq/30-eth0_g0_12:17:211
121980ksoftirqd/1121650irq/29-eth0_g0_11:46:041
121980ksoftirqd/1121650irq/29-eth0_g0_11:46:041
121870ksoftirqd/1121750irq/30-eth0_g0_09:07:040
121810ksoftirqd/1121750irq/30-eth0_g0_12:27:041
121700ksoftirqd/1121750irq/30-eth0_g0_10:52:400
121530ksoftirqd/1121750irq/30-eth0_g0_09:26:261
130742520sleep1121650irq/29-eth0_g0_10:09:031
121500ksoftirqd/1121650irq/29-eth0_g0_10:29:330
309042480sleep1121750irq/30-eth0_g0_11:22:031
121480ksoftirqd/1121750irq/30-eth0_g0_11:44:150
121480ksoftirqd/1121750irq/30-eth0_g0_11:44:150
121480ksoftirqd/1121750irq/30-eth0_g0_10:49:351
121480ksoftirqd/1121750irq/30-eth0_g0_09:36:590
121480ksoftirqd/1121750irq/30-eth0_g0_09:15:081
121650470irq/29-eth0_g0_31ksoftirqd/009:06:450
121650470irq/29-eth0_g0_31ksoftirqd/009:06:450
121470ksoftirqd/1121750irq/30-eth0_g0_10:12:451
121470ksoftirqd/1121750irq/30-eth0_g0_09:36:441
121650450irq/29-eth0_g0_32357-21unixbench_multi07:02:050
121650450irq/29-eth0_g0_0-21swapper/007:07:020
121450ksoftirqd/1121750irq/30-eth0_g0_12:00:141
121450ksoftirqd/1121750irq/30-eth0_g0_09:51:541
121450ksoftirqd/1121650irq/29-eth0_g0_12:02:100
121450ksoftirqd/1121650irq/29-eth0_g0_09:38:191
121650440irq/29-eth0_g0_121ksoftirqd/111:16:590
121650440irq/29-eth0_g0_121ksoftirqd/111:16:590
121440ksoftirqd/1121750irq/30-eth0_g0_09:11:031
121440ksoftirqd/1121650irq/29-eth0_g0_12:25:080
121440ksoftirqd/1121650irq/29-eth0_g0_11:01:421
121440ksoftirqd/1121650irq/29-eth0_g0_09:31:131
121440ksoftirqd/1121650irq/29-eth0_g0_08:52:461
87852430sleep1121650irq/29-eth0_g0_12:04:361
326132430sleep1121650irq/29-eth0_g0_11:28:451
121650430irq/29-eth0_g0_77092sleep012:01:220
121430ksoftirqd/1121650irq/29-eth0_g0_12:30:080
121430ksoftirqd/1121650irq/29-eth0_g0_10:05:530
121430ksoftirqd/1121650irq/29-eth0_g0_07:15:241
121750420irq/30-eth0_g0_1219-21kworker/1:211:02:431
121650420irq/29-eth0_g0_7905-21unixbench_multi09:47:070
121650420irq/29-eth0_g0_31ksoftirqd/011:22:050
121650420irq/29-eth0_g0_31ksoftirqd/009:21:290
121650420irq/29-eth0_g0_2322-21sendmail_mailst11:37:060
121650420irq/29-eth0_g0_0-21swapper/007:42:060
121420ksoftirqd/1121750irq/30-eth0_g0_11:36:150
121420ksoftirqd/1121750irq/30-eth0_g0_09:57:501
325322410chrt121650irq/29-eth0_g0_11:27:480
121750410irq/30-eth0_g0_1219-21kworker/1:211:54:021
121650410irq/29-eth0_g0_26148-21latency_hist08:51:450
121650410irq/29-eth0_g0_13-21kworker/0:111:55:300
121650410irq/29-eth0_g0_13-21kworker/0:110:34:220
121410ksoftirqd/1121650irq/29-eth0_g0_11:11:500
40399401cyclictest24311-21grep08:42:051
40399401cyclictest15049-21open_files10:17:061
121750400irq/30-eth0_g0_1219-21kworker/1:211:18:111
121750400irq/30-eth0_g0_1219-21kworker/1:211:18:111
121650400irq/29-eth0_g0_13-21kworker/0:111:10:030
121650400irq/29-eth0_g0_13-21kworker/0:110:15:560
121650400irq/29-eth0_g0_13-21kworker/0:110:00:500
121650400irq/29-eth0_g0_12390-21if_eth010:06:580
121400ksoftirqd/1121750irq/30-eth0_g0_12:35:440
121400ksoftirqd/1121650irq/29-eth0_g0_12:08:231
121400ksoftirqd/1121650irq/29-eth0_g0_11:47:141
40399395cyclictest21722-21awk08:32:021
121750390irq/30-eth0_g0_401-21cyclictest10:22:081
121650390irq/29-eth0_g0_31ksoftirqd/009:15:310
121650390irq/29-eth0_g0_31ksoftirqd/007:17:040
121650390irq/29-eth0_g0_13-21kworker/0:109:33:170
121390ksoftirqd/1121750irq/30-eth0_g0_12:17:330
121390ksoftirqd/1121750irq/30-eth0_g0_12:14:270
121390ksoftirqd/1121750irq/30-eth0_g0_12:08:270
121390ksoftirqd/1121750irq/30-eth0_g0_11:04:130
121390ksoftirqd/1121750irq/30-eth0_g0_10:57:350
121390ksoftirqd/1121750irq/30-eth0_g0_10:49:230
121390ksoftirqd/1121750irq/30-eth0_g0_10:26:050
121390ksoftirqd/1121750irq/30-eth0_g0_10:17:280
121390ksoftirqd/1121750irq/30-eth0_g0_09:51:530
121390ksoftirqd/1121750irq/30-eth0_g0_09:45:050
121390ksoftirqd/1121750irq/30-eth0_g0_09:31:250
121390ksoftirqd/1121750irq/30-eth0_g0_08:59:200
121390ksoftirqd/1121750irq/30-eth0_g0_08:44:580
121390ksoftirqd/1121750irq/30-eth0_g0_08:41:440
121390ksoftirqd/1121750irq/30-eth0_g0_08:41:440
121390ksoftirqd/1121750irq/30-eth0_g0_07:25:350
121390ksoftirqd/1121650irq/29-eth0_g0_07:36:561
40399381cyclictest6222-21taskset09:41:581
121750380irq/30-eth0_g0_1219-21kworker/1:212:13:541
121750380irq/30-eth0_g0_1219-21kworker/1:210:40:241
121750380irq/30-eth0_g0_1219-21kworker/1:210:27:411
121750380irq/30-eth0_g0_1219-21kworker/1:209:47:161
121750380irq/30-eth0_g0_10212-21taskset07:46:211
121750380irq/30-eth0_g0_0-21swapper/111:15:281
121650380irq/29-eth0_g0_13-21kworker/0:110:37:520
121650380irq/29-eth0_g0_0-21swapper/007:32:060
121380ksoftirqd/1121750irq/30-eth0_g0_10:55:561
121380ksoftirqd/1121750irq/30-eth0_g0_10:45:351
121380ksoftirqd/1121750irq/30-eth0_g0_09:26:000
121380ksoftirqd/1121750irq/30-eth0_g0_07:11:560
40399372cyclictest25717-21uptime08:47:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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