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2026-08-02 - 06:56

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 Sun Aug 02, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1463721690sleep1121650irq/29-eth0_g0_22:09:591
553621680sleep1121650irq/29-eth0_g0_23:45:171
609121270sleep0121750irq/30-eth0_g0_21:35:230
609121270sleep0121750irq/30-eth0_g0_21:35:230
2817921240sleep0121650irq/29-eth0_g0_23:05:420
123012740sleep1121750irq/30-eth0_g0_00:12:281
207562720sleep1121750irq/30-eth0_g0_20:22:271
121680ksoftirqd/1121750irq/30-eth0_g0_19:37:290
72002660sleep0121750irq/30-eth0_g0_21:39:030
121630ksoftirqd/1121750irq/30-eth0_g0_22:51:120
133232600sleep1121750irq/30-eth0_g0_22:03:591
163682580sleep1121750irq/30-eth0_g0_00:28:071
35352550sleep1121750irq/30-eth0_g0_21:24:091
306672530sleep0121650irq/29-eth0_g0_23:16:100
215902530sleep1121750irq/30-eth0_g0_22:37:301
18862530chrt121750irq/30-eth0_g0_21:17:300
121510ksoftirqd/1121750irq/30-eth0_g0_00:10:471
121490ksoftirqd/1121750irq/30-eth0_g0_23:16:181
121490ksoftirqd/1121750irq/30-eth0_g0_20:13:161
121490ksoftirqd/1121650irq/29-eth0_g0_22:01:421
121490ksoftirqd/1121650irq/29-eth0_g0_21:44:241
121650480irq/29-eth0_g0_31ksoftirqd/023:00:060
121650470irq/29-eth0_g0_1173-21proc_pri19:02:290
121470ksoftirqd/1121650irq/29-eth0_g0_23:22:510
121470ksoftirqd/1121650irq/29-eth0_g0_21:06:371
121470ksoftirqd/1121650irq/29-eth0_g0_19:38:041
121460ksoftirqd/1121750irq/30-eth0_g0_23:29:361
121460ksoftirqd/1121650irq/29-eth0_g0_22:52:290
121460ksoftirqd/1121650irq/29-eth0_g0_22:52:290
58952450sleep1121650irq/29-eth0_g0_21:33:071
58952450sleep1121650irq/29-eth0_g0_21:33:071
121650450irq/29-eth0_g0_0-21swapper/020:02:220
121650440irq/29-eth0_g0_14766-21sendmail_mailqu19:57:300
121440ksoftirqd/1121750irq/30-eth0_g0_22:12:211
121440ksoftirqd/1121750irq/30-eth0_g0_22:12:211
121440ksoftirqd/1121650irq/29-eth0_g0_22:44:231
121440ksoftirqd/1121650irq/29-eth0_g0_21:11:501
121440ksoftirqd/1121650irq/29-eth0_g0_20:31:401
71552430sleep0121750irq/30-eth0_g0_23:52:230
121750430irq/30-eth0_g0_177592sleep100:35:031
121650430irq/29-eth0_g0_31ksoftirqd/023:32:270
121650430irq/29-eth0_g0_31ksoftirqd/022:29:010
121650430irq/29-eth0_g0_21386-21netstat22:37:260
121430ksoftirqd/1121750irq/30-eth0_g0_21:07:160
121430ksoftirqd/1121650irq/29-eth0_g0_23:33:321
121430ksoftirqd/1121650irq/29-eth0_g0_20:43:141
121650420irq/29-eth0_g0_22999-21vmstat22:42:330
121650420irq/29-eth0_g0_13-21kworker/0:123:17:330
121650420irq/29-eth0_g0_13-21kworker/0:122:23:270
121650420irq/29-eth0_g0_0-21swapper/020:42:320
121420ksoftirqd/1121650irq/29-eth0_g0_23:10:301
121750410irq/30-eth0_g0_1219-21kworker/1:200:19:221
121750410irq/30-eth0_g0_121ksoftirqd/122:24:161
121650410irq/29-eth0_g0_13-21kworker/0:121:52:270
121650410irq/29-eth0_g0_121ksoftirqd/121:30:050
121410ksoftirqd/1121650irq/29-eth0_g0_20:47:261
121410ksoftirqd/1121650irq/29-eth0_g0_00:22:301
1865994035cyclictest15920-21proc_pri20:02:321
121650400irq/29-eth0_g0_2959-21/usr/sbin/munin21:22:250
121650400irq/29-eth0_g0_1964-21runrttasks20:57:470
121650400irq/29-eth0_g0_13-21kworker/0:123:59:190
121650400irq/29-eth0_g0_13-21kworker/0:123:44:520
121650400irq/29-eth0_g0_13-21kworker/0:121:14:180
121650400irq/29-eth0_g0_13-21kworker/0:100:32:520
121650400irq/29-eth0_g0_13-21kworker/0:100:03:190
121650400irq/29-eth0_g0_13-21kworker/0:100:03:190
121650400irq/29-eth0_g0_0-21swapper/022:02:300
121400ksoftirqd/1121750irq/30-eth0_g0_23:54:481
121400ksoftirqd/1121750irq/30-eth0_g0_23:09:190
121400ksoftirqd/1121650irq/29-eth0_g0_23:58:161
121400ksoftirqd/1121650irq/29-eth0_g0_23:49:471
121400ksoftirqd/1121650irq/29-eth0_g0_22:32:341
186599391cyclictest19797-21unixbench_multi20:17:311
121750390irq/30-eth0_g0_1219-21kworker/1:221:52:031
121650390irq/29-eth0_g0_15988-21seq22:16:260
121650390irq/29-eth0_g0_15988-21seq22:16:260
121650390irq/29-eth0_g0_13-21kworker/0:123:39:230
121650390irq/29-eth0_g0_13-21kworker/0:123:29:140
121650390irq/29-eth0_g0_13-21kworker/0:100:29:040
121650390irq/29-eth0_g0_13-21kworker/0:100:16:250
121650390irq/29-eth0_g0_121ksoftirqd/120:41:190
121390ksoftirqd/1121750irq/30-eth0_g0_22:32:360
121390ksoftirqd/1121750irq/30-eth0_g0_22:20:010
186599382cyclictest24731-21unixbench_singl20:37:351
186599381cyclictest31309-21diskmemload22:27:261
186599381cyclictest11205-21unixbench_multi19:42:311
121750380irq/30-eth0_g0_1219-21kworker/1:223:18:321
121750380irq/30-eth0_g0_1219-21kworker/1:223:05:121
121750380irq/30-eth0_g0_121ksoftirqd/123:40:451
121750380irq/30-eth0_g0_0-21swapper/119:27:321
121750380irq/30-eth0_g0_0-21swapper/100:06:251
121750380irq/30-eth0_g0_0-21swapper/100:06:251
121650380irq/29-eth0_g0_13-21kworker/0:121:58:040
121650380irq/29-eth0_g0_13-21kworker/0:121:48:180
121650380irq/29-eth0_g0_13-21kworker/0:100:07:300
121380ksoftirqd/1121750irq/30-eth0_g0_00:24:210
121380ksoftirqd/1121650irq/29-eth0_g0_22:47:441
186599372cyclictest4562-21sed19:17:241
186599371cyclictest29410-21taskset20:57:291
121750370irq/30-eth0_g0_1219-21kworker/1:223:26:541
121750370irq/30-eth0_g0_121ksoftirqd/121:53:141
121750370irq/30-eth0_g0_121ksoftirqd/121:20:031
121750370irq/30-eth0_g0_1072-21awk19:02:261
121750370irq/30-eth0_g0_0-21swapper/122:21:401
121650370irq/29-eth0_g0_23446-21unixbench_multi20:32:300
121650370irq/29-eth0_g0_19735-21cat20:17:310
121650370irq/29-eth0_g0_1964-21runrttasks20:49:470
121650370irq/29-eth0_g0_13809-21unixbench_singl00:17:320
121650370irq/29-eth0_g0_13-21kworker/0:122:07:450
121650370irq/29-eth0_g0_13-21kworker/0:121:42:430
121370ksoftirqd/1121750irq/30-eth0_g0_23:47:580
186599362cyclictest14505-21sort19:57:251
186599361cyclictest8499-21chrt19:32:281
121750360irq/30-eth0_g0_1219-21kworker/1:221:29:521
121750360irq/30-eth0_g0_121ksoftirqd/121:37:151
121650360irq/29-eth0_g0_8077-21ls19:32:110
121650360irq/29-eth0_g0_22061-21processes20:27:310
121650360irq/29-eth0_g0_1964-21runrttasks21:02:260
121650360irq/29-eth0_g0_1964-21runrttasks19:52:110
121650360irq/29-eth0_g0_1964-21runrttasks19:25:350
121650360irq/29-eth0_g0_1964-21runrttasks19:14:130
121650360irq/29-eth0_g0_10942-21ntpdc19:42:270
186599351cyclictest28061-21cat20:52:261
186599351cyclictest26344-21grep22:57:271
186599351cyclictest0-21swapper/119:56:451
121750350irq/30-eth0_g0_1219-21kworker/1:221:12:521
121750350irq/30-eth0_g0_0-21swapper/122:53:051
121750350irq/30-eth0_g0_0-21swapper/122:53:051
121650350irq/29-eth0_g0_5065-21sed19:17:340
121650350irq/29-eth0_g0_27880-21df_inode20:52:220
121650350irq/29-eth0_g0_2363-21ntpdc19:07:290
121650350irq/29-eth0_g0_18571-21unixbench_multi20:12:340
121350ksoftirqd/1121750irq/30-eth0_g0_20:07:320
186599341cyclictest4334-21pluginstate19:17:101
186599341cyclictest2225-21latency19:07:261
186599341cyclictest17394-21unixbench_singl20:07:351
186599341cyclictest0-21swapper/119:51:101
186599341cyclictest0-21swapper/119:26:071
121650340irq/29-eth0_g0_8502-21grep19:32:280
121340ksoftirqd/1121750irq/30-eth0_g0_19:55:180
121650330irq/29-eth0_g0_1964-21runrttasks20:24:110
186599322cyclictest0-21swapper/120:33:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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