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2025-12-17 - 20:10

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 all highest latencies:
System rack3slot5s.osadl.org (updated Wed Dec 17, 2025 01:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
816221330sleep0121450irq/29-eth0_g0_21:15:400
121950ksoftirqd/1121550irq/30-eth0_g0_23:23:091
121850ksoftirqd/1121550irq/30-eth0_g0_00:17:351
121760ksoftirqd/1121550irq/30-eth0_g0_21:57:001
283312740sleep1121550irq/30-eth0_g0_22:37:351
319192590sleep0121550irq/30-eth0_g0_22:52:330
121590ksoftirqd/1121550irq/30-eth0_g0_19:49:531
121580ksoftirqd/1121550irq/30-eth0_g0_21:52:461
121570ksoftirqd/1121550irq/30-eth0_g0_19:54:031
121450540irq/29-eth0_g0_1941-21runrttasks22:29:220
121540ksoftirqd/1191732sleep022:00:160
121540ksoftirqd/1121450irq/29-eth0_g0_00:36:341
121450530irq/29-eth0_g0_975599cyclictest22:43:111
121520ksoftirqd/1121550irq/30-eth0_g0_23:42:481
121520ksoftirqd/1121450irq/29-eth0_g0_22:07:321
121450500irq/29-eth0_g0_1941-21runrttasks00:04:200
975599491cyclictest1941-21runrttasks19:57:361
121450490irq/29-eth0_g0_23176-21df_abs22:17:290
121450490irq/29-eth0_g0_23176-21df_abs22:17:290
121490ksoftirqd/1121450irq/29-eth0_g0_23:54:141
233102480sleep0121450irq/29-eth0_g0_00:28:170
121480ksoftirqd/1121550irq/30-eth0_g0_22:54:521
9755994733cyclictest17043-21grep00:02:411
9755994732cyclictest2126-21proc_pri23:02:371
975599471cyclictest6036-21seq21:07:311
121550470irq/30-eth0_g0_975599cyclictest23:56:211
121550470irq/30-eth0_g0_121ksoftirqd/119:27:401
121450470irq/29-eth0_g0_975599cyclictest19:42:381
121450470irq/29-eth0_g0_29389-21latency_hist20:29:520
121450470irq/29-eth0_g0_0-21swapper/020:37:380
121470ksoftirqd/1975599cyclictest00:07:571
121470ksoftirqd/1975599cyclictest00:07:571
121470ksoftirqd/1121550irq/30-eth0_g0_22:57:580
121470ksoftirqd/1121550irq/30-eth0_g0_22:01:341
9755994634cyclictest8352-21runrttasks23:27:391
9755994614cyclictest15744-21df21:47:301
975599461cyclictest1941-21runrttasks20:10:441
975599461cyclictest0-21swapper/119:32:171
121550460irq/30-eth0_g0_975599cyclictest23:17:301
121550460irq/30-eth0_g0_975599cyclictest23:17:301
121450460irq/29-eth0_g0_975599cyclictest23:33:591
121460ksoftirqd/1121550irq/30-eth0_g0_21:42:401
9755994526cyclictest1941-21runrttasks19:37:011
9755994523cyclictest5259-21unixbench_multi21:02:411
9755994520cyclictest11689-21taskset19:17:371
975599452cyclictest10059-21/usr/sbin/munin19:12:361
975599451cyclictest238452sleep120:07:341
975599451cyclictest13389-21unixbench_singl23:47:431
975599451cyclictest10264-21/usr/sbin/munin23:37:351
121550450irq/30-eth0_g0_1221-21kworker/1:222:57:191
121550450irq/30-eth0_g0_121ksoftirqd/121:38:541
121550450irq/30-eth0_g0_121ksoftirqd/100:31:001
121550450irq/30-eth0_g0_11179-21ntp_states21:27:361
121450ksoftirqd/1121550irq/30-eth0_g0_00:10:551
110912450sleep0121550irq/30-eth0_g0_23:38:450
975599444cyclictest5032-21runrttasks23:14:431
975599442cyclictest2429-21latency20:52:331
975599441cyclictest31591-21grep20:37:411
975599441cyclictest30235-21/usr/sbin/munin20:32:391
975599441cyclictest27615-21awk20:22:351
121550440irq/30-eth0_g0_975599cyclictest22:31:011
121550440irq/30-eth0_g0_975599cyclictest22:18:401
121550440irq/30-eth0_g0_975599cyclictest22:18:401
121550440irq/30-eth0_g0_975599cyclictest21:10:131
121550440irq/30-eth0_g0_23200-21unixbench_singl00:27:361
121550440irq/30-eth0_g0_121ksoftirqd/121:22:331
121450440irq/29-eth0_g0_975599cyclictest23:09:441
121450440irq/29-eth0_g0_975599cyclictest22:19:591
121450440irq/29-eth0_g0_1941-21runrttasks23:31:130
121450440irq/29-eth0_g0_0-21swapper/021:50:420
121440ksoftirqd/1975599cyclictest21:17:311
121440ksoftirqd/1121550irq/30-eth0_g0_21:21:470
975599437cyclictest3268-21runrttasks20:55:531
9755994318cyclictest30640-21irqstats22:47:311
975599431cyclictest28860-21taskset20:27:361
975599431cyclictest22236-21sshd20:01:271
121550430irq/30-eth0_g0_121ksoftirqd/100:19:551
121450430irq/29-eth0_g0_975599cyclictest22:12:381
121430ksoftirqd/1121550irq/30-eth0_g0_21:37:460
975599422cyclictest25498-21/usr/sbin/munin22:27:351
975599422cyclictest12547-21chrt19:22:291
9755994216cyclictest26010-21/usr/sbin/munin20:17:351
9755994216cyclictest26010-21/usr/sbin/munin20:17:351
975599421cyclictest0-21swapper/121:32:341
121450420irq/29-eth0_g0_13-21kworker/0:123:01:200
121450420irq/29-eth0_g0_13-21kworker/0:100:24:480
121420ksoftirqd/1121550irq/30-eth0_g0_23:10:010
121420ksoftirqd/1121550irq/30-eth0_g0_19:50:250
975599411cyclictest32627-21seq20:42:371
121550410irq/30-eth0_g0_9747-21sh19:09:521
121450410irq/29-eth0_g0_1941-21runrttasks23:55:570
121450410irq/29-eth0_g0_1941-21runrttasks21:55:280
121450410irq/29-eth0_g0_13-21kworker/0:122:35:580
121450410irq/29-eth0_g0_121ksoftirqd/121:42:400
9755994017cyclictest706-21runrttasks20:45:011
121550400irq/30-eth0_g0_1941-21runrttasks21:10:590
121450400irq/29-eth0_g0_24371-21tail00:32:360
121450400irq/29-eth0_g0_1941-21runrttasks21:46:590
121450400irq/29-eth0_g0_1941-21runrttasks19:05:180
121450400irq/29-eth0_g0_13-21kworker/0:122:22:360
121450390irq/29-eth0_g0_1941-21runrttasks23:50:110
121450390irq/29-eth0_g0_1941-21runrttasks22:41:070
121450390irq/29-eth0_g0_1941-21runrttasks22:05:570
121450390irq/29-eth0_g0_1941-21runrttasks20:24:130
121450390irq/29-eth0_g0_1941-21runrttasks00:17:390
121450390irq/29-eth0_g0_13-21kworker/0:123:40:400
121450390irq/29-eth0_g0_13-21kworker/0:123:20:350
121450390irq/29-eth0_g0_13-21kworker/0:123:15:430
121450390irq/29-eth0_g0_13-21kworker/0:123:15:430
121450390irq/29-eth0_g0_13-21kworker/0:100:08:180
121450390irq/29-eth0_g0_13-21kworker/0:100:08:180
121550380irq/30-eth0_g0_1941-21runrttasks22:30:430
121450380irq/29-eth0_g0_975499cyclictest22:14:060
121450380irq/29-eth0_g0_17595-21/usr/sbin/munin19:42:300
121450380irq/29-eth0_g0_13-21kworker/0:123:49:460
121450380irq/29-eth0_g0_12136-21df21:32:310
121450380irq/29-eth0_g0_0-21swapper/020:07:340
121380ksoftirqd/1121550irq/30-eth0_g0_23:06:150
121380ksoftirqd/1121450irq/29-eth0_g0_22:45:540
121450370irq/29-eth0_g0_5262-21unixbench_multi21:02:410
121450370irq/29-eth0_g0_1941-21runrttasks23:27:350
121450370irq/29-eth0_g0_1941-21runrttasks21:25:020
121450370irq/29-eth0_g0_1941-21runrttasks20:58:370
121450370irq/29-eth0_g0_1941-21runrttasks20:52:170
121450370irq/29-eth0_g0_1941-21runrttasks20:45:220
121450370irq/29-eth0_g0_1941-21runrttasks20:41:050
121450370irq/29-eth0_g0_1941-21runrttasks00:13:170
121450370irq/29-eth0_g0_13437-21munin-run19:24:520
121450370irq/29-eth0_g0_0-21swapper/000:35:380
121450360irq/29-eth0_g0_26257-21seq20:17:330
121450360irq/29-eth0_g0_26257-21seq20:17:330
121450360irq/29-eth0_g0_23025-21sed20:02:380
121450360irq/29-eth0_g0_1941-21runrttasks21:07:290
121450360irq/29-eth0_g0_18782-21df_abs19:47:310
121450360irq/29-eth0_g0_16656-21ps19:37:400
121450360irq/29-eth0_g0_14006-21latency19:27:330
121450360irq/29-eth0_g0_11654-21netstat19:17:350
121550350irq/30-eth0_g0_0-21swapper/019:31:060
121450350irq/29-eth0_g0_29998-21sort20:32:350
121450350irq/29-eth0_g0_10364-21sort19:12:350
121450340irq/29-eth0_g0_25471-21unixbench_singl20:12:390
121450340irq/29-eth0_g0_2088-21lldpd19:56:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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