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2025-07-19 - 06:23

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 Sat Jul 19, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163121250sleep12288650irq/29-eth0_g0_21:20:521
188342960sleep02288650irq/29-eth0_g0_22:31:250
121900ksoftirqd/12288750irq/30-eth0_g0_23:18:030
121800ksoftirqd/12288750irq/30-eth0_g0_00:15:521
247802790sleep12288750irq/30-eth0_g0_22:54:161
124712580sleep02288650irq/29-eth0_g0_22:03:370
70882550sleep02288650irq/29-eth0_g0_23:54:380
4062530sleep12288750irq/30-eth0_g0_23:27:421
121530ksoftirqd/12288650irq/29-eth0_g0_22:34:371
316912500sleep12288650irq/29-eth0_g0_21:11:451
121500ksoftirqd/12288650irq/29-eth0_g0_22:41:531
121490ksoftirqd/12288650irq/29-eth0_g0_22:01:351
2288650480irq/29-eth0_g0_470-21kworker/1:123:37:051
121480ksoftirqd/12288750irq/30-eth0_g0_23:25:060
121480ksoftirqd/12288650irq/29-eth0_g0_23:06:131
121480ksoftirqd/12288650irq/29-eth0_g0_22:15:201
121480ksoftirqd/12288650irq/29-eth0_g0_22:02:321
121470ksoftirqd/12288650irq/29-eth0_g0_21:28:481
121450ksoftirqd/12288750irq/30-eth0_g0_23:52:241
121450ksoftirqd/12288650irq/29-eth0_g0_23:37:411
121450ksoftirqd/12288650irq/29-eth0_g0_22:11:211
121450ksoftirqd/1145722sleep000:26:170
1079994513cyclictest5557-21cpu21:37:341
2288750440irq/30-eth0_g0_31ksoftirqd/020:32:410
2288650440irq/29-eth0_g0_470-21kworker/1:122:26:501
121440ksoftirqd/12288650irq/29-eth0_g0_23:57:461
121440ksoftirqd/12288650irq/29-eth0_g0_22:27:481
121440ksoftirqd/12288650irq/29-eth0_g0_19:37:381
2288750430irq/30-eth0_g0_22885-21kworker/0:221:28:140
2288650430irq/29-eth0_g0_7352-21timerandwakeup21:42:471
121430ksoftirqd/12288650irq/29-eth0_g0_23:14:211
121430ksoftirqd/12288650irq/29-eth0_g0_19:07:411
2288650420irq/29-eth0_g0_571-21unixbench_multi19:02:451
2288650420irq/29-eth0_g0_571-21unixbench_multi19:02:451
2288750410irq/30-eth0_g0_22885-21kworker/0:221:17:150
121410ksoftirqd/12288750irq/30-eth0_g0_21:47:460
121410ksoftirqd/12288650irq/29-eth0_g0_22:50:371
121410ksoftirqd/12288650irq/29-eth0_g0_20:49:341
121410ksoftirqd/12288650irq/29-eth0_g0_20:29:241
2288750400irq/30-eth0_g0_6658-21mailstats19:27:440
2288750400irq/30-eth0_g0_31ksoftirqd/023:12:160
2288750400irq/30-eth0_g0_22885-21kworker/0:200:01:590
2288750400irq/30-eth0_g0_17129-21latency_hist00:37:240
2288750400irq/30-eth0_g0_121ksoftirqd/122:16:580
2288750400irq/30-eth0_g0_11657-21tail19:47:450
2288750400irq/30-eth0_g0_107899cyclictest22:56:480
2288650400irq/29-eth0_g0_121ksoftirqd/123:57:141
2288650400irq/29-eth0_g0_121ksoftirqd/121:35:020
121400ksoftirqd/12288750irq/30-eth0_g0_23:13:580
121400ksoftirqd/12288750irq/30-eth0_g0_21:43:520
121400ksoftirqd/12288650irq/29-eth0_g0_21:25:251
121400ksoftirqd/12288650irq/29-eth0_g0_20:36:111
2288750390irq/30-eth0_g0_9843-21grep19:42:360
2288750390irq/30-eth0_g0_4070-21sort23:42:390
2288750390irq/30-eth0_g0_27596-21grep20:52:470
2288750390irq/30-eth0_g0_2474-21taskset23:37:250
2288750390irq/30-eth0_g0_22885-21kworker/0:222:18:580
2288750390irq/30-eth0_g0_22885-21kworker/0:200:20:570
2288750390irq/30-eth0_g0_2017-21crond19:38:240
2288650390irq/29-eth0_g0_470-21kworker/1:123:23:481
2288650390irq/29-eth0_g0_470-21kworker/1:123:20:341
2288650390irq/29-eth0_g0_470-21kworker/1:100:27:471
2288650390irq/29-eth0_g0_31ksoftirqd/022:23:120
2288650390irq/29-eth0_g0_31ksoftirqd/022:09:240
2288650390irq/29-eth0_g0_31ksoftirqd/021:26:300
2288650390irq/29-eth0_g0_121ksoftirqd/123:00:071
2288650390irq/29-eth0_g0_121ksoftirqd/100:05:571
2288650390irq/29-eth0_g0_1077-21cyclictest19:07:240
2288650390irq/29-eth0_g0_1077-21cyclictest19:07:240
121390ksoftirqd/12288750irq/30-eth0_g0_23:01:590
121390ksoftirqd/12288650irq/29-eth0_g0_22:36:260
121390ksoftirqd/12288650irq/29-eth0_g0_21:35:361
121390ksoftirqd/12288650irq/29-eth0_g0_19:42:491
2288750380irq/30-eth0_g0_30521-21diskmemload23:39:590
2288750380irq/30-eth0_g0_30521-21diskmemload22:51:210
2288750380irq/30-eth0_g0_29636-21ls21:02:390
2288750380irq/30-eth0_g0_26853-21ls20:52:250
2288750380irq/30-eth0_g0_22885-21kworker/0:223:48:180
2288750380irq/30-eth0_g0_22885-21kworker/0:223:03:430
2288750380irq/30-eth0_g0_22885-21kworker/0:222:41:550
2288750380irq/30-eth0_g0_22885-21kworker/0:222:02:020
2288750380irq/30-eth0_g0_22885-21kworker/0:221:55:480
2288750380irq/30-eth0_g0_22885-21kworker/0:221:07:370
2288750380irq/30-eth0_g0_22885-21kworker/0:200:29:100
2288750380irq/30-eth0_g0_22885-21kworker/0:200:12:380
2288750380irq/30-eth0_g0_22885-21kworker/0:200:07:380
2288750380irq/30-eth0_g0_21191-21ntpdc20:27:420
2288750380irq/30-eth0_g0_2021-21runrttasks19:07:280
2288750380irq/30-eth0_g0_121ksoftirqd/120:25:021
2288650380irq/29-eth0_g0_470-21kworker/1:122:21:221
2288650380irq/29-eth0_g0_470-21kworker/1:100:34:001
2288650380irq/29-eth0_g0_27626-21unixbench_singl20:52:471
2288650380irq/29-eth0_g0_121ksoftirqd/123:08:281
2288750370irq/30-eth0_g0_613-21/usr/sbin/munin21:17:380
2288750370irq/30-eth0_g0_470-21kworker/1:100:18:421
2288750370irq/30-eth0_g0_22885-21kworker/0:221:41:190
2288750370irq/30-eth0_g0_107899cyclictest00:04:060
2288650370irq/29-eth0_g0_470-21kworker/1:121:47:321
2288650370irq/29-eth0_g0_4423-21unixbench_singl23:42:451
2288650370irq/29-eth0_g0_11701-21unixbench_singl19:47:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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