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2025-12-19 - 19:46

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 Fri Dec 19, 2025 01:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
529621430sleep1121450irq/29-eth0_g0_23:53:071
8772940sleep1121450irq/29-eth0_g0_21:22:381
172472730chrt121550irq/30-eth0_g0_20:17:361
121670ksoftirqd/1121550irq/30-eth0_g0_23:42:251
319082580sleep0121450irq/29-eth0_g0_23:30:580
121560ksoftirqd/1121550irq/30-eth0_g0_21:38:131
299322550sleep1121550irq/30-eth0_g0_21:09:591
245692540sleep0121450irq/29-eth0_g0_23:01:100
121540ksoftirqd/1121550irq/30-eth0_g0_23:44:570
121530ksoftirqd/1121550irq/30-eth0_g0_21:51:491
121520ksoftirqd/1121550irq/30-eth0_g0_22:11:501
121520ksoftirqd/1121550irq/30-eth0_g0_00:11:091
121520ksoftirqd/1121550irq/30-eth0_g0_00:11:091
121510ksoftirqd/1121450irq/29-eth0_g0_00:30:530
26972500sleep1121550irq/30-eth0_g0_19:17:391
254452490sleep0121450irq/29-eth0_g0_20:52:270
121480ksoftirqd/1121450irq/29-eth0_g0_22:20:410
66272470sleep0121450irq/29-eth0_g0_23:59:180
121470ksoftirqd/1121550irq/30-eth0_g0_22:20:111
121450460irq/29-eth0_g0_31ksoftirqd/020:02:380
121460ksoftirqd/1121550irq/30-eth0_g0_23:17:280
121460ksoftirqd/1121450irq/29-eth0_g0_23:48:211
121550450irq/30-eth0_g0_121ksoftirqd/123:16:271
121550450irq/30-eth0_g0_121ksoftirqd/120:27:261
230262440sleep1121450irq/29-eth0_g0_22:53:231
121550440irq/30-eth0_g0_1221-21kworker/1:223:06:531
121450440irq/29-eth0_g0_31740-21runrttasks19:05:240
121440ksoftirqd/1121550irq/30-eth0_g0_00:28:051
113712440sleep0121450irq/29-eth0_g0_22:07:280
121450430irq/29-eth0_g0_121ksoftirqd/122:48:110
121430ksoftirqd/1121550irq/30-eth0_g0_23:31:331
121430ksoftirqd/1121450irq/29-eth0_g0_23:29:101
121430ksoftirqd/1121450irq/29-eth0_g0_23:29:101
121430ksoftirqd/1121450irq/29-eth0_g0_21:57:341
38499421cyclictest5044-21grep19:27:361
38499421cyclictest5044-21grep19:27:361
121550420irq/30-eth0_g0_7543-21unixbench_singl19:37:370
121550420irq/30-eth0_g0_233322sleep122:56:031
121450420irq/29-eth0_g0_13-21kworker/0:122:39:070
121420ksoftirqd/1121450irq/29-eth0_g0_22:00:001
38499411cyclictest8755-21head19:42:351
121550410irq/30-eth0_g0_1221-21kworker/1:222:26:131
121450410irq/29-eth0_g0_31ksoftirqd/000:10:460
121450410irq/29-eth0_g0_31ksoftirqd/000:10:460
121450410irq/29-eth0_g0_13-21kworker/0:122:01:120
121450410irq/29-eth0_g0_13-21kworker/0:121:44:560
121450410irq/29-eth0_g0_13-21kworker/0:121:27:380
121410ksoftirqd/1121550irq/30-eth0_g0_23:28:410
121410ksoftirqd/1121550irq/30-eth0_g0_23:28:410
121410ksoftirqd/1121550irq/30-eth0_g0_22:17:381
121410ksoftirqd/1121550irq/30-eth0_g0_21:42:420
121410ksoftirqd/1121450irq/29-eth0_g0_22:38:361
121410ksoftirqd/1121450irq/29-eth0_g0_21:31:041
38499407cyclictest2060-21grep21:27:381
38499401cyclictest6440-21df_abs21:47:261
38499401cyclictest248372chrt23:02:301
121550400irq/30-eth0_g0_121ksoftirqd/122:41:081
121550400irq/30-eth0_g0_121ksoftirqd/100:17:351
121450400irq/29-eth0_g0_31272-21seq21:16:210
121450400irq/29-eth0_g0_29445-21sendmail_mailqu21:07:350
121450400irq/29-eth0_g0_1941-21runrttasks23:41:190
121450400irq/29-eth0_g0_13-21kworker/0:123:36:510
121450400irq/29-eth0_g0_13-21kworker/0:123:13:110
121450400irq/29-eth0_g0_13-21kworker/0:123:06:380
121450400irq/29-eth0_g0_13-21kworker/0:122:56:520
121450400irq/29-eth0_g0_13-21kworker/0:122:28:230
121450400irq/29-eth0_g0_13-21kworker/0:122:16:180
121450400irq/29-eth0_g0_13-21kworker/0:121:59:330
121450400irq/29-eth0_g0_13-21kworker/0:121:51:410
121400ksoftirqd/1121550irq/30-eth0_g0_20:46:540
38499392cyclictest30025-21proc_pri23:22:321
38499391cyclictest27754-21sed21:02:261
121550390irq/30-eth0_g0_121ksoftirqd/123:58:011
121450390irq/29-eth0_g0_8735-21sendmail_mailqu00:07:340
121450390irq/29-eth0_g0_31ksoftirqd/000:02:150
121450390irq/29-eth0_g0_1941-21runrttasks22:51:420
121450390irq/29-eth0_g0_13-21kworker/0:122:13:480
121450390irq/29-eth0_g0_13-21kworker/0:121:37:050
121450390irq/29-eth0_g0_13-21kworker/0:121:24:360
121450390irq/29-eth0_g0_13-21kworker/0:100:20:580
121450390irq/29-eth0_g0_1221-21kworker/1:222:30:391
121390ksoftirqd/1121550irq/30-eth0_g0_23:49:560
121390ksoftirqd/1121550irq/30-eth0_g0_23:22:330
121390ksoftirqd/1121550irq/30-eth0_g0_22:41:240
121390ksoftirqd/1121550irq/30-eth0_g0_21:31:120
121390ksoftirqd/1121550irq/30-eth0_g0_00:38:190
121390ksoftirqd/1121550irq/30-eth0_g0_00:24:490
121390ksoftirqd/1121450irq/29-eth0_g0_20:05:531
121390ksoftirqd/1121450irq/29-eth0_g0_00:30:061
384993833cyclictest21982-21cat22:49:481
38499381cyclictest29839-21diskmemload00:38:071
38499381cyclictest29210-21cat21:07:301
121550380irq/30-eth0_g0_1221-21kworker/1:221:43:071
121550380irq/30-eth0_g0_1221-21kworker/1:221:18:131
121550380irq/30-eth0_g0_1221-21kworker/1:200:03:401
121450380irq/29-eth0_g0_21937-21ntpdc20:37:320
121380ksoftirqd/1121550irq/30-eth0_g0_00:16:380
121380ksoftirqd/1121450irq/29-eth0_g0_20:47:081
38499376cyclictest0-21swapper/119:32:351
38499371cyclictest23133-21netstat20:42:301
38499371cyclictest13219-21chrt20:02:291
121550370irq/30-eth0_g0_1221-21kworker/1:223:12:101
121550370irq/30-eth0_g0_1221-21kworker/1:200:24:111
121550370irq/30-eth0_g0_121ksoftirqd/122:05:461
121550370irq/30-eth0_g0_10762-21/usr/sbin/munin19:52:281
121450370irq/29-eth0_g0_31ksoftirqd/021:10:520
121450370irq/29-eth0_g0_1941-21runrttasks19:16:060
121450370irq/29-eth0_g0_12449-21grep19:57:360
121370ksoftirqd/1121450irq/29-eth0_g0_19:22:021
121370ksoftirqd/1121450irq/29-eth0_g0_19:09:521
38499362cyclictest27386-21munin-run20:59:481
38499360cyclictest0-21swapper/120:37:281
121550360irq/30-eth0_g0_121ksoftirqd/100:05:521
121450360irq/29-eth0_g0_700-21/usr/sbin/munin19:12:320
121450360irq/29-eth0_g0_1941-21runrttasks20:16:530
121450360irq/29-eth0_g0_1941-21runrttasks19:53:560
121450360irq/29-eth0_g0_18013-21sed20:22:270
121450360irq/29-eth0_g0_0-21swapper/022:30:400
38499351cyclictest9517-21ethtool19:47:291
38499351cyclictest7419-21/usr/sbin/munin19:37:351
38499351cyclictest256142sleep120:52:301
38499351cyclictest12004-21cat19:57:291
121550350irq/30-eth0_g0_1941-21runrttasks20:59:470
121450350irq/29-eth0_g0_23465-21head20:42:370
121450350irq/29-eth0_g0_1941-21runrttasks20:25:330
121450350irq/29-eth0_g0_1941-21runrttasks20:14:260
121450350irq/29-eth0_g0_1941-21runrttasks19:41:460
121450350irq/29-eth0_g0_1941-21runrttasks19:26:160
121450350irq/29-eth0_g0_1941-21runrttasks19:26:160
121450350irq/29-eth0_g0_15028-21seq20:08:370
38499341cyclictest0-21swapper/120:24:071
121550340irq/30-eth0_g0_1941-21runrttasks19:05:261
121550340irq/30-eth0_g0_0-21swapper/123:35:541
121450340irq/29-eth0_g0_5886-21ls19:32:300
121450340irq/29-eth0_g0_1941-21runrttasks19:45:120
121340ksoftirqd/1121550irq/30-eth0_g0_21:02:200
38499331cyclictest20739-21open_files20:32:331
121450330irq/29-eth0_g0_0-21swapper/020:32:300
121450320irq/29-eth0_g0_0-21swapper/019:22:280
38499311cyclictest0-21swapper/120:13:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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