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2026-07-19 - 05:47

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 Jul 19, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2793921150sleep1121650irq/29-eth0_g0_22:09:491
121980ksoftirqd/1121750irq/30-eth0_g0_22:45:381
113912870sleep1121750irq/30-eth0_g0_23:14:261
164862820sleep1121650irq/29-eth0_g0_23:36:401
121570ksoftirqd/1121750irq/30-eth0_g0_23:23:100
121550ksoftirqd/1121750irq/30-eth0_g0_19:48:120
121530ksoftirqd/1121750irq/30-eth0_g0_21:13:491
121530ksoftirqd/1121650irq/29-eth0_g0_20:18:060
121510ksoftirqd/1121750irq/30-eth0_g0_22:20:381
121650480irq/29-eth0_g0_31ksoftirqd/022:58:060
121470ksoftirqd/1121750irq/30-eth0_g0_00:10:461
121650460irq/29-eth0_g0_15302-21munin-plugin-st19:07:430
121650460irq/29-eth0_g0_15302-21munin-plugin-st19:07:430
121460ksoftirqd/1121650irq/29-eth0_g0_00:00:491
189562450sleep1121750irq/30-eth0_g0_21:33:031
121450ksoftirqd/1121750irq/30-eth0_g0_22:24:141
121450ksoftirqd/1121650irq/29-eth0_g0_00:37:151
121450ksoftirqd/1121650irq/29-eth0_g0_00:37:151
187342440sleep1121750irq/30-eth0_g0_23:44:241
187342440sleep1121750irq/30-eth0_g0_23:44:241
121440ksoftirqd/1121750irq/30-eth0_g0_22:40:331
121440ksoftirqd/1121750irq/30-eth0_g0_22:30:311
121440ksoftirqd/1121650irq/29-eth0_g0_21:53:581
121440ksoftirqd/1121650irq/29-eth0_g0_19:11:231
121440ksoftirqd/1121650irq/29-eth0_g0_19:03:041
121440ksoftirqd/1121650irq/29-eth0_g0_19:03:041
121750430irq/30-eth0_g0_1219-21kworker/1:221:10:361
121650430irq/29-eth0_g0_31ksoftirqd/023:21:130
121650430irq/29-eth0_g0_121ksoftirqd/122:51:020
121430ksoftirqd/1121750irq/30-eth0_g0_00:33:080
121430ksoftirqd/1121750irq/30-eth0_g0_00:33:080
121430ksoftirqd/1121650irq/29-eth0_g0_23:37:240
121750420irq/30-eth0_g0_1219-21kworker/1:223:18:171
121650420irq/29-eth0_g0_3811-21sort22:43:050
121650420irq/29-eth0_g0_31ksoftirqd/000:22:570
121650420irq/29-eth0_g0_2518-21sendmail_mailqu22:38:040
121650420irq/29-eth0_g0_14917-21unixbench_singl23:28:070
121650420irq/29-eth0_g0_13-21kworker/0:123:59:100
121650420irq/29-eth0_g0_121ksoftirqd/100:06:260
121420ksoftirqd/1121650irq/29-eth0_g0_22:01:360
121750410irq/30-eth0_g0_1219-21kworker/1:223:41:371
121750410irq/30-eth0_g0_1219-21kworker/1:222:37:371
121750410irq/30-eth0_g0_121ksoftirqd/100:15:451
121410ksoftirqd/1121750irq/30-eth0_g0_23:47:580
121410ksoftirqd/1121750irq/30-eth0_g0_23:47:430
121410ksoftirqd/1121750irq/30-eth0_g0_23:47:430
121410ksoftirqd/1121650irq/29-eth0_g0_23:54:161
121410ksoftirqd/1121650irq/29-eth0_g0_21:47:411
1530599401cyclictest19840-21df_abs21:37:531
121750400irq/30-eth0_g0_1219-21kworker/1:223:24:541
121750400irq/30-eth0_g0_1219-21kworker/1:221:27:001
121750400irq/30-eth0_g0_121ksoftirqd/123:04:131
121650400irq/29-eth0_g0_31ksoftirqd/023:11:070
121650400irq/29-eth0_g0_1964-21runrttasks21:10:340
121650400irq/29-eth0_g0_1964-21runrttasks20:13:220
121650400irq/29-eth0_g0_13-21kworker/0:123:55:230
121650400irq/29-eth0_g0_13-21kworker/0:123:16:520
121650400irq/29-eth0_g0_13-21kworker/0:122:19:300
121650400irq/29-eth0_g0_13-21kworker/0:122:05:000
121650400irq/29-eth0_g0_13-21kworker/0:122:05:000
121650400irq/29-eth0_g0_13-21kworker/0:121:26:100
121650400irq/29-eth0_g0_13-21kworker/0:100:18:020
121650400irq/29-eth0_g0_0-21swapper/023:41:350
1530599396cyclictest4471-21grep20:33:061
1530599396cyclictest4471-21grep20:33:061
1530599392cyclictest28759-21/usr/sbin/munin20:02:431
1530599391cyclictest21572-21sed19:32:541
121750390irq/30-eth0_g0_1219-21kworker/1:222:53:241
121750390irq/30-eth0_g0_121ksoftirqd/121:32:091
121750390irq/30-eth0_g0_0-21swapper/121:21:151
121650390irq/29-eth0_g0_5397-21awk20:38:020
121650390irq/29-eth0_g0_1964-21runrttasks19:54:270
121650390irq/29-eth0_g0_1964-21runrttasks19:54:270
121650390irq/29-eth0_g0_13-21kworker/0:122:25:270
121650390irq/29-eth0_g0_13-21kworker/0:122:08:010
121650390irq/29-eth0_g0_13-21kworker/0:121:45:540
121650390irq/29-eth0_g0_13-21kworker/0:121:28:430
121650390irq/29-eth0_g0_13-21kworker/0:100:07:470
121390ksoftirqd/1121750irq/30-eth0_g0_23:03:410
121390ksoftirqd/1121750irq/30-eth0_g0_22:32:450
121390ksoftirqd/1121750irq/30-eth0_g0_22:28:400
121390ksoftirqd/1121750irq/30-eth0_g0_21:48:190
121390ksoftirqd/1121750irq/30-eth0_g0_21:35:300
121390ksoftirqd/1121750irq/30-eth0_g0_21:19:410
121390ksoftirqd/1121750irq/30-eth0_g0_20:36:000
121390ksoftirqd/1121750irq/30-eth0_g0_20:36:000
121390ksoftirqd/1121750irq/30-eth0_g0_20:25:260
121390ksoftirqd/1121750irq/30-eth0_g0_20:05:460
121390ksoftirqd/1121750irq/30-eth0_g0_19:44:090
121390ksoftirqd/1121750irq/30-eth0_g0_19:37:380
121390ksoftirqd/1121750irq/30-eth0_g0_00:17:210
121390ksoftirqd/1121650irq/29-eth0_g0_20:24:271
121390ksoftirqd/1121650irq/29-eth0_g0_19:12:451
121750380irq/30-eth0_g0_27072-21grep19:53:051
121750380irq/30-eth0_g0_27072-21grep19:53:051
121750380irq/30-eth0_g0_1219-21kworker/1:223:08:081
121750380irq/30-eth0_g0_1219-21kworker/1:223:02:431
121750380irq/30-eth0_g0_121ksoftirqd/123:30:091
121750380irq/30-eth0_g0_121ksoftirqd/121:49:011
121750380irq/30-eth0_g0_121ksoftirqd/100:20:261
121750380irq/30-eth0_g0_0-21swapper/100:25:111
121650380irq/29-eth0_g0_28812-21fgrep22:13:010
121650380irq/29-eth0_g0_20924-21unixbench_multi19:28:060
121650380irq/29-eth0_g0_1964-21runrttasks19:41:520
121650380irq/29-eth0_g0_13-21kworker/0:121:53:430
121650380irq/29-eth0_g0_13-21kworker/0:121:16:120
121650380irq/29-eth0_g0_13-21kworker/0:100:31:020
121380ksoftirqd/1121750irq/30-eth0_g0_20:47:380
121380ksoftirqd/1121750irq/30-eth0_g0_20:01:100
121380ksoftirqd/1121650irq/29-eth0_g0_21:57:521
1530599372cyclictest9368-21unixbench_singl20:53:051
1530599372cyclictest19755-21grep19:23:081
1530599371cyclictest18107-21chrt19:17:591
1530599371cyclictest0-21swapper/121:03:021
121750370irq/30-eth0_g0_1219-21kworker/1:223:48:111
121750370irq/30-eth0_g0_1219-21kworker/1:200:05:541
121650370irq/29-eth0_g0_1964-21runrttasks20:30:550
121650370irq/29-eth0_g0_1964-21runrttasks19:12:020
121650370irq/29-eth0_g0_13-21kworker/0:122:57:000
121650370irq/29-eth0_g0_13-21kworker/0:121:41:000
121370ksoftirqd/1121750irq/30-eth0_g0_22:48:031
121370ksoftirqd/1121650irq/29-eth0_g0_19:38:011
7782360sleep10-21swapper/120:18:061
1530599361cyclictest5648-21grep20:38:061
1530599361cyclictest3208-21sed20:28:041
1530599361cyclictest25639-21ps19:48:031
1530599361cyclictest0-21swapper/120:42:541
121750360irq/30-eth0_g0_1219-21kworker/1:222:04:581
121750360irq/30-eth0_g0_1219-21kworker/1:222:04:581
121750360irq/30-eth0_g0_1219-21kworker/1:200:29:521
121650360irq/29-eth0_g0_7853-21ntp_offset20:48:010
121650360irq/29-eth0_g0_1964-21runrttasks20:09:500
121650360irq/29-eth0_g0_1964-21runrttasks19:17:000
121650360irq/29-eth0_g0_12299-21chrt21:07:440
1530599351cyclictest8630-21sort20:52:441
1530599351cyclictest32464-21latency_hist20:17:441
1530599351cyclictest30739-21sed20:08:071
1530599351cyclictest289142sleep122:13:021
1530599351cyclictest24585-21unixbench_multi19:43:061
121650350irq/29-eth0_g0_18043-21if_eth019:17:570
121650350irq/29-eth0_g0_10446-21sendmail_mailqu20:58:030
121650350irq/29-eth0_g0_0-21swapper/019:23:020
1530599341cyclictest289142sleep120:02:551
121750340irq/30-eth0_g0_20441-21df_inode19:27:561
121650340irq/29-eth0_g0_0-21swapper/020:53:050
1530599331cyclictest0-21swapper/120:58:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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