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2026-03-10 - 22:32

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 Mar 10, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3168021230sleep1121650irq/29-eth0_g0_10:43:341
121910ksoftirqd/1121750irq/30-eth0_g0_10:45:130
121910ksoftirqd/1121750irq/30-eth0_g0_10:45:130
121890ksoftirqd/1121750irq/30-eth0_g0_10:04:231
121770ksoftirqd/1121750irq/30-eth0_g0_07:22:361
150202750chrt121750irq/30-eth0_g0_09:35:141
313412690sleep1121750irq/30-eth0_g0_08:30:101
313412690sleep1121750irq/30-eth0_g0_08:30:101
92032670sleep1121750irq/30-eth0_g0_11:24:581
317212590sleep0121750irq/30-eth0_g0_10:44:030
223642540sleep1121650irq/29-eth0_g0_12:16:041
121530ksoftirqd/1121650irq/29-eth0_g0_12:23:151
113682530sleep1121750irq/30-eth0_g0_11:31:361
273172520sleep0121650irq/29-eth0_g0_12:36:350
170002520sleep1121650irq/29-eth0_g0_09:44:021
121750480irq/30-eth0_g0_470-21kworker/1:110:13:321
54012460sleep1121750irq/30-eth0_g0_11:08:351
121750460irq/30-eth0_g0_470-21kworker/1:112:02:031
121650460irq/29-eth0_g0_21929-21/usr/sbin/munin07:50:180
121460ksoftirqd/1121750irq/30-eth0_g0_08:55:191
121460ksoftirqd/1121650irq/29-eth0_g0_10:05:160
121650450irq/29-eth0_g0_2029-21runrttasks07:09:030
121650450irq/29-eth0_g0_121ksoftirqd/108:40:171
121450ksoftirqd/1121750irq/30-eth0_g0_11:04:340
116182450sleep0121650irq/29-eth0_g0_09:20:190
323672440sleep1121750irq/30-eth0_g0_10:45:191
323672440sleep1121750irq/30-eth0_g0_10:45:191
186612440sleep0121650irq/29-eth0_g0_12:00:470
121750440irq/30-eth0_g0_470-21kworker/1:109:30:191
121650440irq/29-eth0_g0_14142-21unixbench_multi09:30:200
121440ksoftirqd/1121750irq/30-eth0_g0_12:38:471
121440ksoftirqd/1121750irq/30-eth0_g0_09:19:591
121440ksoftirqd/1121750irq/30-eth0_g0_08:15:190
121440ksoftirqd/1121650irq/29-eth0_g0_07:18:101
121750430irq/30-eth0_g0_470-21kworker/1:111:28:191
121750430irq/30-eth0_g0_470-21kworker/1:110:21:201
121750430irq/30-eth0_g0_470-21kworker/1:110:07:301
121430ksoftirqd/1121750irq/30-eth0_g0_09:50:141
121430ksoftirqd/1121750irq/30-eth0_g0_09:50:141
121430ksoftirqd/1121750irq/30-eth0_g0_09:42:330
121750420irq/30-eth0_g0_470-21kworker/1:112:25:241
121750420irq/30-eth0_g0_470-21kworker/1:111:16:251
121750420irq/30-eth0_g0_470-21kworker/1:110:52:301
121750420irq/30-eth0_g0_121ksoftirqd/111:48:251
121750420irq/30-eth0_g0_121ksoftirqd/111:48:251
121650420irq/29-eth0_g0_121ksoftirqd/112:34:090
121420ksoftirqd/1121750irq/30-eth0_g0_11:07:190
121420ksoftirqd/1121750irq/30-eth0_g0_10:36:160
121750410irq/30-eth0_g0_470-21kworker/1:109:22:591
121650410irq/29-eth0_g0_13-21kworker/0:111:34:340
121410ksoftirqd/1121750irq/30-eth0_g0_12:28:170
121410ksoftirqd/1121750irq/30-eth0_g0_11:03:321
121410ksoftirqd/1121650irq/29-eth0_g0_10:22:480
121750400irq/30-eth0_g0_470-21kworker/1:111:40:181
121750400irq/30-eth0_g0_470-21kworker/1:110:57:451
121650400irq/29-eth0_g0_2029-21runrttasks11:57:520
121650400irq/29-eth0_g0_13-21kworker/0:111:41:010
121650400irq/29-eth0_g0_13-21kworker/0:111:16:160
121650400irq/29-eth0_g0_13-21kworker/0:110:02:300
121650400irq/29-eth0_g0_0-21swapper/108:15:171
121650400irq/29-eth0_g0_0-21swapper/008:04:500
121400ksoftirqd/1121750irq/30-eth0_g0_11:47:020
121400ksoftirqd/1121750irq/30-eth0_g0_11:47:020
121400ksoftirqd/1121750irq/30-eth0_g0_10:17:530
121400ksoftirqd/1121650irq/29-eth0_g0_11:27:180
121750390irq/30-eth0_g0_470-21kworker/1:112:07:471
121750390irq/30-eth0_g0_470-21kworker/1:111:35:131
121750390irq/30-eth0_g0_470-21kworker/1:110:38:311
121750390irq/30-eth0_g0_470-21kworker/1:110:30:331
121750390irq/30-eth0_g0_470-21kworker/1:110:15:121
121750390irq/30-eth0_g0_121ksoftirqd/111:59:561
121650390irq/29-eth0_g0_190292df_abs07:40:090
121650390irq/29-eth0_g0_13-21kworker/0:111:36:020
121650390irq/29-eth0_g0_13-21kworker/0:111:23:250
121650390irq/29-eth0_g0_13-21kworker/0:111:13:230
121650390irq/29-eth0_g0_13-21kworker/0:110:29:160
121390ksoftirqd/1121750irq/30-eth0_g0_09:27:411
121390ksoftirqd/1121750irq/30-eth0_g0_09:26:250
121390ksoftirqd/1121750irq/30-eth0_g0_07:40:181
121750380irq/30-eth0_g0_470-21kworker/1:112:33:251
121750380irq/30-eth0_g0_470-21kworker/1:112:11:331
121750380irq/30-eth0_g0_470-21kworker/1:111:52:451
121750380irq/30-eth0_g0_470-21kworker/1:109:56:071
121750380irq/30-eth0_g0_470-21kworker/1:109:49:061
121750380irq/30-eth0_g0_470-21kworker/1:109:49:061
121750380irq/30-eth0_g0_470-21kworker/1:109:12:081
121650380irq/29-eth0_g0_4126-21proc_pri08:50:170
121650380irq/29-eth0_g0_31ksoftirqd/010:34:210
121650380irq/29-eth0_g0_13-21kworker/0:112:15:470
121650380irq/29-eth0_g0_13-21kworker/0:110:10:330
121650380irq/29-eth0_g0_13-21kworker/0:109:53:520
121650380irq/29-eth0_g0_13-21kworker/0:109:53:520
121650380irq/29-eth0_g0_13-21kworker/0:109:13:450
121650380irq/29-eth0_g0_0-21swapper/007:30:100
121380ksoftirqd/1121750irq/30-eth0_g0_12:22:360
121380ksoftirqd/1121650irq/29-eth0_g0_10:28:411
121750370irq/30-eth0_g0_470-21kworker/1:111:12:191
121750370irq/30-eth0_g0_10430-21df_abs07:05:111
121650370irq/29-eth0_g0_16119-21grep11:50:190
121650370irq/29-eth0_g0_13-21kworker/0:110:56:100
121650370irq/29-eth0_g0_13-21kworker/0:109:55:090
121650370irq/29-eth0_g0_13-21kworker/0:109:15:220
121370ksoftirqd/14316-21unixbench_multi08:50:191
143812360sleep014384-21ntp_offset07:20:140
121650360irq/29-eth0_g0_727-21df10:50:080
121650360irq/29-eth0_g0_2029-21runrttasks09:05:130
121650360irq/29-eth0_g0_2029-21runrttasks09:02:220
121650360irq/29-eth0_g0_2029-21runrttasks08:49:020
121650360irq/29-eth0_g0_2029-21runrttasks08:33:030
121650360irq/29-eth0_g0_2029-21runrttasks08:33:030
121650360irq/29-eth0_g0_2029-21runrttasks08:21:230
121650360irq/29-eth0_g0_2029-21runrttasks07:49:360
121650360irq/29-eth0_g0_2029-21runrttasks07:37:520
121650360irq/29-eth0_g0_15371-21df_abs07:25:110
121650360irq/29-eth0_g0_13-21kworker/0:112:09:050
121650360irq/29-eth0_g0_13-21kworker/0:109:48:120
121650360irq/29-eth0_g0_13-21kworker/0:109:48:120
121650360irq/29-eth0_g0_13-21kworker/0:109:36:560
121650360irq/29-eth0_g0_12732-21latency_hist07:14:590
121360ksoftirqd/1121750irq/30-eth0_g0_12:10:190
121750350irq/30-eth0_g0_22104-21sshd07:50:271
121350ksoftirqd/1121650irq/29-eth0_g0_08:10:160
121350ksoftirqd/1121650irq/29-eth0_g0_08:04:591
121750340irq/30-eth0_g0_32701-21runrttasks08:35:141
121650340irq/29-eth0_g0_579-21unixbench_multi08:35:200
121650340irq/29-eth0_g0_25715-21unixbench_singl08:05:210
121650340irq/29-eth0_g0_2029-21runrttasks08:42:140
121650340irq/29-eth0_g0_0-21swapper/007:55:180
124132330sleep12023-21crond07:11:581
121650330irq/29-eth0_g0_30337-21ntpdc08:25:160
121650330irq/29-eth0_g0_12924-21df_inode07:15:120
121330ksoftirqd/116379-21sed07:29:581
121330ksoftirqd/1121650irq/29-eth0_g0_07:32:031
121750320irq/30-eth0_g0_22714-21chrt07:55:101
121750320irq/30-eth0_g0_20598-21proc_pri07:45:171
121750320irq/30-eth0_g0_0-21swapper/109:08:571
121750320irq/30-eth0_g0_0-21swapper/107:39:591
121650320irq/29-eth0_g0_27385-21runrttasks08:14:461
121650320irq/29-eth0_g0_0-21swapper/008:55:140
121320ksoftirqd/129807-21seq08:24:241
121750290irq/30-eth0_g0_0-21swapper/109:00:451
121750290irq/30-eth0_g0_0-21swapper/108:08:531
121650280irq/29-eth0_g0_3256-21runrttasks08:46:141
121750270irq/30-eth0_g0_30323-21netstat08:25:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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