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2026-06-09 - 01:50

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Tue Jun 09, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2534321450sleep0121650irq/29-eth0_g0_21:15:240
121850ksoftirqd/1121650irq/29-eth0_g0_23:03:121
290142750sleep0121650irq/29-eth0_g0_21:30:110
104082720sleep0121750irq/30-eth0_g0_20:14:410
104082720sleep0121750irq/30-eth0_g0_20:14:410
238502710chrt121750irq/30-eth0_g0_21:09:431
121700ksoftirqd/1121750irq/30-eth0_g0_19:54:321
121620ksoftirqd/1121750irq/30-eth0_g0_22:16:041
121590ksoftirqd/1121650irq/29-eth0_g0_22:25:221
121590ksoftirqd/1121650irq/29-eth0_g0_22:25:221
281052560sleep1121750irq/30-eth0_g0_23:39:371
121540ksoftirqd/1121650irq/29-eth0_g0_22:50:451
121530ksoftirqd/1121750irq/30-eth0_g0_22:07:241
262542500sleep0121750irq/30-eth0_g0_23:32:450
121490ksoftirqd/1121750irq/30-eth0_g0_21:59:350
121490ksoftirqd/1121750irq/30-eth0_g0_21:26:291
121750480irq/30-eth0_g0_121ksoftirqd/121:19:411
121750470irq/30-eth0_g0_1964-21runrttasks00:09:360
121650470irq/29-eth0_g0_31988-21sort23:54:410
121750460irq/30-eth0_g0_1219-21kworker/1:222:14:191
121650460irq/29-eth0_g0_31ksoftirqd/000:16:050
121460ksoftirqd/1121650irq/29-eth0_g0_22:59:330
121650450irq/29-eth0_g0_26206-21munin-run19:09:210
121450ksoftirqd/1121750irq/30-eth0_g0_00:32:361
121450ksoftirqd/1121650irq/29-eth0_g0_21:03:321
121450ksoftirqd/1121650irq/29-eth0_g0_21:03:321
121450ksoftirqd/1121650irq/29-eth0_g0_20:30:351
297502440sleep1121750irq/30-eth0_g0_23:45:391
121440ksoftirqd/1121750irq/30-eth0_g0_21:39:380
121440ksoftirqd/1121750irq/30-eth0_g0_21:34:330
121440ksoftirqd/1121650irq/29-eth0_g0_23:26:061
121440ksoftirqd/1121650irq/29-eth0_g0_21:34:541
121750430irq/30-eth0_g0_25713-21grep19:04:421
121650430irq/29-eth0_g0_31ksoftirqd/023:08:580
121650430irq/29-eth0_g0_31ksoftirqd/021:44:380
121650430irq/29-eth0_g0_0-21swapper/019:29:330
121430ksoftirqd/1121650irq/29-eth0_g0_21:49:421
121430ksoftirqd/1121650irq/29-eth0_g0_00:09:341
17552420sleep0121650irq/29-eth0_g0_21:53:220
121750420irq/30-eth0_g0_31ksoftirqd/022:27:250
121750420irq/30-eth0_g0_31ksoftirqd/022:27:250
121750420irq/30-eth0_g0_1219-21kworker/1:221:44:411
121750420irq/30-eth0_g0_1219-21kworker/1:200:23:041
121750420irq/30-eth0_g0_1219-21kworker/1:200:23:041
121650420irq/29-eth0_g0_31ksoftirqd/021:28:250
121650420irq/29-eth0_g0_1964-21runrttasks22:16:040
121750410irq/30-eth0_g0_13-21kworker/0:123:36:000
121750410irq/30-eth0_g0_1219-21kworker/1:222:44:381
121650410irq/29-eth0_g0_31ksoftirqd/000:31:200
121650410irq/29-eth0_g0_13-21kworker/0:122:11:280
121650410irq/29-eth0_g0_13-21kworker/0:121:21:310
121410ksoftirqd/1121650irq/29-eth0_g0_23:50:161
2621099401cyclictest23236-21proc_pri23:19:391
121750400irq/30-eth0_g0_6152-21egrep19:59:301
121750400irq/30-eth0_g0_25427-21chrt21:16:231
121650400irq/29-eth0_g0_5294-21netstat19:54:360
121650400irq/29-eth0_g0_23620-21runrttasks21:09:350
121650400irq/29-eth0_g0_13-21kworker/0:123:49:360
121650400irq/29-eth0_g0_13-21kworker/0:123:45:300
121650400irq/29-eth0_g0_13-21kworker/0:123:28:120
121650400irq/29-eth0_g0_13-21kworker/0:123:21:580
121650400irq/29-eth0_g0_13-21kworker/0:122:38:290
121650400irq/29-eth0_g0_13-21kworker/0:122:31:360
121650400irq/29-eth0_g0_13-21kworker/0:122:07:300
121650400irq/29-eth0_g0_13-21kworker/0:100:26:030
121650400irq/29-eth0_g0_13-21kworker/0:100:21:060
121650400irq/29-eth0_g0_13-21kworker/0:100:21:060
121650400irq/29-eth0_g0_13-21kworker/0:100:04:420
121400ksoftirqd/1121650irq/29-eth0_g0_21:41:511
121400ksoftirqd/1121650irq/29-eth0_g0_20:49:351
121750390irq/30-eth0_g0_1219-21kworker/1:200:02:441
121650390irq/29-eth0_g0_26300-21/usr/sbin/munin19:09:380
121650390irq/29-eth0_g0_1964-21runrttasks22:44:380
121650390irq/29-eth0_g0_13-21kworker/0:123:14:410
121650390irq/29-eth0_g0_13-21kworker/0:122:51:070
121650390irq/29-eth0_g0_13-21kworker/0:100:04:160
121650390irq/29-eth0_g0_121ksoftirqd/123:11:120
121390ksoftirqd/13173-21taskset21:59:301
121390ksoftirqd/1121650irq/29-eth0_g0_23:37:321
121390ksoftirqd/1121650irq/29-eth0_g0_23:31:541
121390ksoftirqd/1121650irq/29-eth0_g0_22:42:241
121390ksoftirqd/1121650irq/29-eth0_g0_22:23:301
121390ksoftirqd/1121650irq/29-eth0_g0_21:58:001
121390ksoftirqd/1121650irq/29-eth0_g0_21:31:551
121390ksoftirqd/1121650irq/29-eth0_g0_20:25:491
121390ksoftirqd/1121650irq/29-eth0_g0_20:19:171
121390ksoftirqd/1121650irq/29-eth0_g0_20:19:171
121390ksoftirqd/1121650irq/29-eth0_g0_19:50:211
121390ksoftirqd/1121650irq/29-eth0_g0_00:17:071
121750380irq/30-eth0_g0_16946-21load22:54:351
121750380irq/30-eth0_g0_1219-21kworker/1:223:56:521
121750380irq/30-eth0_g0_1219-21kworker/1:222:34:341
121750380irq/30-eth0_g0_1219-21kworker/1:200:28:121
121750380irq/30-eth0_g0_1219-21kworker/1:200:07:391
121750380irq/30-eth0_g0_121ksoftirqd/123:07:321
121650380irq/29-eth0_g0_31ksoftirqd/023:39:320
121650380irq/29-eth0_g0_31ksoftirqd/022:55:450
121650380irq/29-eth0_g0_1964-21runrttasks21:58:250
121650380irq/29-eth0_g0_16427-21proc_pri20:39:400
121650380irq/29-eth0_g0_13-21kworker/0:122:19:470
121650380irq/29-eth0_g0_13-21kworker/0:100:37:200
121650380irq/29-eth0_g0_121ksoftirqd/122:41:540
121380ksoftirqd/1121650irq/29-eth0_g0_23:18:431
121380ksoftirqd/1121650irq/29-eth0_g0_20:55:341
121380ksoftirqd/1121650irq/29-eth0_g0_20:55:341
121380ksoftirqd/1121650irq/29-eth0_g0_20:34:561
121380ksoftirqd/1121650irq/29-eth0_g0_20:22:401
121380ksoftirqd/1121650irq/29-eth0_g0_19:41:461
121380ksoftirqd/1121650irq/29-eth0_g0_19:32:421
121750370irq/30-eth0_g0_1219-21kworker/1:222:31:251
121650370irq/29-eth0_g0_6764-21timerandwakeup19:59:400
121650370irq/29-eth0_g0_608-21tail19:34:420
121650370irq/29-eth0_g0_28996-21cat19:19:340
121650370irq/29-eth0_g0_28245-21uptime19:14:420
121650370irq/29-eth0_g0_1964-21runrttasks20:54:320
121650370irq/29-eth0_g0_1964-21runrttasks20:54:320
2621099366cyclictest11232sleep119:39:201
121750360irq/30-eth0_g0_16805-21taskset20:40:561
121750360irq/30-eth0_g0_0-21swapper/100:38:171
121650360irq/29-eth0_g0_22772-21unixbench_singl21:04:421
121650360irq/29-eth0_g0_19019-21timerandwakeup20:49:400
2621099351cyclictest23231-21diskmemload23:09:321
121750350irq/30-eth0_g0_8044-21grep20:04:441
121750350irq/30-eth0_g0_29981-21/usr/sbin/munin19:24:371
121750350irq/30-eth0_g0_29434-21unixbench_singl19:19:401
121650350irq/29-eth0_g0_1964-21runrttasks21:09:000
121650350irq/29-eth0_g0_1964-21runrttasks20:12:060
121650350irq/29-eth0_g0_1964-21runrttasks20:12:060
121650350irq/29-eth0_g0_12553-21latency20:24:340
121350ksoftirqd/1121650irq/29-eth0_g0_20:10:381
121350ksoftirqd/1121650irq/29-eth0_g0_20:10:381
121650340irq/29-eth0_g0_7708-21sort20:04:390
121650340irq/29-eth0_g0_3696-21/usr/sbin/munin19:49:350
121650340irq/29-eth0_g0_1964-21runrttasks20:45:530
121650340irq/29-eth0_g0_1964-21runrttasks19:48:570
121650340irq/29-eth0_g0_0-21swapper/020:29:390
121340ksoftirqd/1121650irq/29-eth0_g0_19:15:561
121330ksoftirqd/126594-21chrt19:09:361
2621099321cyclictest0-21swapper/119:44:321
121650320irq/29-eth0_g0_1964-21runrttasks21:02:130
121650320irq/29-eth0_g0_1964-21runrttasks21:02:130
121650320irq/29-eth0_g0_15287-21awk20:34:410
121650320irq/29-eth0_g0_0-21swapper/019:24:420
121320ksoftirqd/118321-21taskset20:49:191
121650310irq/29-eth0_g0_0-21swapper/020:19:360
121650310irq/29-eth0_g0_0-21swapper/019:39:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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