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2026-07-28 - 17:06

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 Jul 28, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2985521390sleep0121750irq/30-eth0_g0_10:25:430
245272760sleep1121750irq/30-eth0_g0_12:16:351
49762560chrt121750irq/30-eth0_g0_08:42:441
121650550irq/29-eth0_g0_1329499cyclictest10:12:150
225632540sleep0121650irq/29-eth0_g0_09:56:390
121650530irq/29-eth0_g0_1329499cyclictest11:42:380
121650530irq/29-eth0_g0_1329499cyclictest09:41:130
121650520irq/29-eth0_g0_1329499cyclictest11:13:080
121650520irq/29-eth0_g0_1329499cyclictest07:12:060
121650510irq/29-eth0_g0_1329499cyclictest09:57:410
121650510irq/29-eth0_g0_1329499cyclictest09:57:410
121650510irq/29-eth0_g0_1329499cyclictest09:48:260
121650510irq/29-eth0_g0_1329499cyclictest09:19:120
121750500irq/30-eth0_g0_1329499cyclictest09:10:410
121650490irq/29-eth0_g0_1329499cyclictest10:06:080
121650480irq/29-eth0_g0_1329499cyclictest09:13:550
121750470irq/30-eth0_g0_1329499cyclictest11:27:540
121650470irq/29-eth0_g0_1329499cyclictest12:04:370
121650470irq/29-eth0_g0_1329499cyclictest11:48:100
121650470irq/29-eth0_g0_1329499cyclictest11:35:330
121650470irq/29-eth0_g0_1329499cyclictest11:07:300
121650470irq/29-eth0_g0_1329499cyclictest10:28:430
121650470irq/29-eth0_g0_1329499cyclictest09:27:380
121650470irq/29-eth0_g0_1329499cyclictest07:52:430
121650460irq/29-eth0_g0_1329499cyclictest12:27:420
121650460irq/29-eth0_g0_1329499cyclictest11:55:170
121650460irq/29-eth0_g0_1329499cyclictest09:23:320
121750450irq/30-eth0_g0_1329499cyclictest10:56:480
121650450irq/29-eth0_g0_1329499cyclictest11:27:010
121650450irq/29-eth0_g0_1329499cyclictest10:40:550
121650450irq/29-eth0_g0_1329499cyclictest10:32:400
121450ksoftirqd/1121750irq/30-eth0_g0_11:13:281
121450ksoftirqd/1121750irq/30-eth0_g0_10:29:541
36172440sleep0121650irq/29-eth0_g0_10:51:100
121650440irq/29-eth0_g0_1329499cyclictest09:43:190
121650440irq/29-eth0_g0_1329499cyclictest09:32:580
121750430irq/30-eth0_g0_1964-21runrttasks12:10:311
121750430irq/30-eth0_g0_1219-21kworker/1:212:36:411
121750430irq/30-eth0_g0_1219-21kworker/1:212:01:301
121750430irq/30-eth0_g0_1219-21kworker/1:211:35:211
121750430irq/30-eth0_g0_1219-21kworker/1:210:53:011
121750430irq/30-eth0_g0_1219-21kworker/1:210:10:361
121650430irq/29-eth0_g0_1329499cyclictest12:35:470
121430ksoftirqd/1121650irq/29-eth0_g0_09:14:041
149772420sleep1121650irq/29-eth0_g0_09:24:021
121750420irq/30-eth0_g0_1329499cyclictest12:25:230
121750420irq/30-eth0_g0_1219-21kworker/1:212:06:461
121750420irq/30-eth0_g0_1219-21kworker/1:211:49:261
121750420irq/30-eth0_g0_1219-21kworker/1:211:10:011
121750420irq/30-eth0_g0_1219-21kworker/1:210:00:521
121750420irq/30-eth0_g0_1219-21kworker/1:210:00:521
121650420irq/29-eth0_g0_1329499cyclictest12:13:430
121650420irq/29-eth0_g0_1329499cyclictest10:47:050
121750410irq/30-eth0_g0_1219-21kworker/1:212:31:171
121750410irq/30-eth0_g0_1219-21kworker/1:210:15:071
121750410irq/30-eth0_g0_1219-21kworker/1:209:52:301
121750410irq/30-eth0_g0_1219-21kworker/1:209:44:131
121650410irq/29-eth0_g0_1964-21runrttasks07:05:380
121410ksoftirqd/1121650irq/29-eth0_g0_09:21:131
121410ksoftirqd/1121650irq/29-eth0_g0_09:03:101
121410ksoftirqd/1121650irq/29-eth0_g0_08:36:461
121410ksoftirqd/1121650irq/29-eth0_g0_07:47:181
121750400irq/30-eth0_g0_32549-21/usr/sbin/munin10:37:381
121750400irq/30-eth0_g0_1219-21kworker/1:212:18:501
121750400irq/30-eth0_g0_1219-21kworker/1:212:18:501
121750400irq/30-eth0_g0_1219-21kworker/1:211:19:181
121650400irq/29-eth0_g0_1329499cyclictest12:21:540
121650400irq/29-eth0_g0_1329499cyclictest12:21:540
121400ksoftirqd/1121650irq/29-eth0_g0_08:54:281
121400ksoftirqd/1121650irq/29-eth0_g0_08:50:161
121400ksoftirqd/1121650irq/29-eth0_g0_08:16:081
1329599391cyclictest26810-21latency_hist08:02:221
121750390irq/30-eth0_g0_1219-21kworker/1:211:31:301
121750390irq/30-eth0_g0_1219-21kworker/1:211:04:101
121750390irq/30-eth0_g0_1219-21kworker/1:210:52:041
121390ksoftirqd/1121650irq/29-eth0_g0_07:11:581
1329599382cyclictest31477-21df_inode10:32:341
1329599382cyclictest27050-21df_inode08:02:331
1329599382cyclictest16123-21load07:17:361
121750380irq/30-eth0_g0_20901-21tail09:47:431
121750380irq/30-eth0_g0_1219-21kworker/1:210:57:241
121750380irq/30-eth0_g0_1219-21kworker/1:210:03:411
121750380irq/30-eth0_g0_1219-21kworker/1:209:32:461
121750380irq/30-eth0_g0_1219-21kworker/1:209:08:081
121650380irq/29-eth0_g0_1964-21runrttasks10:25:521
121380ksoftirqd/1121650irq/29-eth0_g0_12:26:101
121380ksoftirqd/1121650irq/29-eth0_g0_07:30:371
121750370irq/30-eth0_g0_1219-21kworker/1:211:44:581
121750370irq/30-eth0_g0_1219-21kworker/1:209:37:311
121750370irq/30-eth0_g0_1219-21kworker/1:209:31:531
121650370irq/29-eth0_g0_12830-21grep07:02:441
121370ksoftirqd/1121650irq/29-eth0_g0_10:43:571
121370ksoftirqd/1121650irq/29-eth0_g0_10:18:101
121370ksoftirqd/1121650irq/29-eth0_g0_07:48:461
121750360irq/30-eth0_g0_19910-21awk07:32:391
121750360irq/30-eth0_g0_19910-21awk07:32:391
121750360irq/30-eth0_g0_1219-21kworker/1:211:39:221
121750360irq/30-eth0_g0_1219-21kworker/1:211:22:341
1329599352cyclictest30637-21df08:17:311
1329599351cyclictest29292-21latency_hist08:12:221
121750350irq/30-eth0_g0_1219-21kworker/1:211:52:291
121750340irq/30-eth0_g0_25118-21grep07:52:441
121340ksoftirqd/1121650irq/29-eth0_g0_10:15:440
1329599331cyclictest85142sleep108:57:431
121750330irq/30-eth0_g0_21288-21sendmail_mailqu07:37:401
121750330irq/30-eth0_g0_21288-21sendmail_mailqu07:37:401
121650330irq/29-eth0_g0_0-21swapper/010:22:040
1329499327cyclictest1964-21runrttasks08:21:000
1329499326cyclictest1964-21runrttasks08:06:370
121750320irq/30-eth0_g0_1964-21runrttasks07:12:391
121750320irq/30-eth0_g0_1296-21grep08:27:431
121650320irq/29-eth0_g0_1329499cyclictest12:07:250
121750310irq/30-eth0_g0_17471-21/usr/sbin/munin07:22:391
1329499305cyclictest121650irq/29-eth0_g0_07:52:220
13294993020cyclictest15534-21runrttasks11:37:430
121750300irq/30-eth0_g0_32176-21netstat08:22:371
13294992910cyclictest1761-21chrt08:32:210
121750290irq/30-eth0_g0_3598-21taskset08:37:421
121650290irq/29-eth0_g0_1329499cyclictest11:59:220
73232280sleep0121650irq/29-eth0_g0_11:06:270
1329499282cyclictest0-21swapper/007:43:520
121650280irq/29-eth0_g0_1329499cyclictest11:00:340
121650280irq/29-eth0_g0_1329499cyclictest07:17:330
13294992724cyclictest0-21swapper/007:32:060
1329499272cyclictest26803-21munin-plugin-st08:02:210
13294992718cyclictest1958-21crond08:33:220
121750270irq/30-eth0_g0_1329499cyclictest11:17:540
121270ksoftirqd/11329499cyclictest07:40:360
121270ksoftirqd/11329499cyclictest07:40:360
1329499266cyclictest121650irq/29-eth0_g0_08:07:430
13294992612cyclictest13292-21cyclictest09:02:580
121750260irq/30-eth0_g0_1329499cyclictest07:17:210
71372250sleep0121750irq/30-eth0_g0_08:52:380
1329499253cyclictest121650irq/29-eth0_g0_07:32:380
1329499253cyclictest121650irq/29-eth0_g0_07:32:380
1329499252cyclictest29815-21proc_pri08:12:420
121650250irq/29-eth0_g0_0-21swapper/007:22:450
1329499246cyclictest0-21swapper/008:22:520
121650240irq/29-eth0_g0_0-21swapper/008:47:290
121240ksoftirqd/11329499cyclictest09:01:190
121240ksoftirqd/11329499cyclictest08:42:430
121240ksoftirqd/11329499cyclictest08:37:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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