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2025-11-22 - 18:40

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 all highest latencies:
System rack3slot5s.osadl.org (updated Sat Nov 22, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2048621220sleep0121650irq/29-eth0_g0_10:03:240
1211060ksoftirqd/1121750irq/30-eth0_g0_09:18:221
191062880sleep1121750irq/30-eth0_g0_09:56:351
121870ksoftirqd/1121750irq/30-eth0_g0_11:30:081
149942740sleep1121750irq/30-eth0_g0_07:29:261
168652670sleep1121750irq/30-eth0_g0_09:49:031
121560ksoftirqd/1121750irq/30-eth0_g0_08:42:261
121510ksoftirqd/1121750irq/30-eth0_g0_11:01:221
258202500sleep0121750irq/30-eth0_g0_12:35:410
62682490sleep0121650irq/29-eth0_g0_11:16:180
121490ksoftirqd/1121750irq/30-eth0_g0_09:33:451
182112480sleep1121750irq/30-eth0_g0_12:05:061
150162480sleep0121650irq/29-eth0_g0_07:29:400
121480ksoftirqd/1121750irq/30-eth0_g0_09:28:311
121470ksoftirqd/1121650irq/29-eth0_g0_12:34:591
99142460sleep0121650irq/29-eth0_g0_11:30:530
121750460irq/30-eth0_g0_1219-21kworker/1:211:26:511
121450ksoftirqd/1121750irq/30-eth0_g0_11:10:301
121450ksoftirqd/1121750irq/30-eth0_g0_11:10:301
121450ksoftirqd/1121750irq/30-eth0_g0_10:35:471
121450ksoftirqd/1121650irq/29-eth0_g0_09:35:121
121450ksoftirqd/1121650irq/29-eth0_g0_08:56:071
121450ksoftirqd/1121650irq/29-eth0_g0_08:49:551
121450ksoftirqd/1121650irq/29-eth0_g0_08:10:011
121450ksoftirqd/1121650irq/29-eth0_g0_08:07:031
121750440irq/30-eth0_g0_121ksoftirqd/111:50:061
121440ksoftirqd/1126752chrt07:20:000
121440ksoftirqd/1121650irq/29-eth0_g0_12:32:081
121440ksoftirqd/1121650irq/29-eth0_g0_07:05:081
121650430irq/29-eth0_g0_121ksoftirqd/109:27:230
121430ksoftirqd/1121750irq/30-eth0_g0_11:59:491
121430ksoftirqd/1121750irq/30-eth0_g0_11:59:491
121430ksoftirqd/1121750irq/30-eth0_g0_11:47:100
121430ksoftirqd/1121750irq/30-eth0_g0_10:17:080
121750420irq/30-eth0_g0_1219-21kworker/1:210:00:481
121750420irq/30-eth0_g0_121ksoftirqd/111:55:031
121750420irq/30-eth0_g0_121ksoftirqd/111:55:031
121650420irq/29-eth0_g0_31ksoftirqd/012:11:020
121420ksoftirqd/1121750irq/30-eth0_g0_11:42:021
121420ksoftirqd/1121750irq/30-eth0_g0_11:34:510
121750410irq/30-eth0_g0_1219-21kworker/1:212:20:371
121650410irq/29-eth0_g0_31ksoftirqd/012:04:590
121650410irq/29-eth0_g0_20827-21unixbench_singl12:15:080
121650410irq/29-eth0_g0_1894-21runrttasks07:07:360
121650410irq/29-eth0_g0_1714-21unixbench_multi08:45:070
121650410irq/29-eth0_g0_16858-21ntp_offset12:00:040
121650410irq/29-eth0_g0_16858-21ntp_offset12:00:040
121650410irq/29-eth0_g0_13-21kworker/0:110:12:010
121410ksoftirqd/1121750irq/30-eth0_g0_09:10:200
121410ksoftirqd/1121650irq/29-eth0_g0_10:56:271
1013299411cyclictest1319-21wc08:45:001
121750400irq/30-eth0_g0_121ksoftirqd/110:28:061
121750400irq/30-eth0_g0_121ksoftirqd/110:18:311
121650400irq/29-eth0_g0_31ksoftirqd/012:24:450
121650400irq/29-eth0_g0_31ksoftirqd/011:09:120
121650400irq/29-eth0_g0_31ksoftirqd/010:39:280
121650400irq/29-eth0_g0_192682sleep009:58:290
121650400irq/29-eth0_g0_1894-21runrttasks09:52:480
121650400irq/29-eth0_g0_1894-21runrttasks08:59:220
121650400irq/29-eth0_g0_13-21kworker/0:110:55:480
121650400irq/29-eth0_g0_0-21swapper/010:06:110
90922390sleep0121650irq/29-eth0_g0_11:29:460
121750390irq/30-eth0_g0_20203-21df12:14:581
121650390irq/29-eth0_g0_31ksoftirqd/012:30:190
121650390irq/29-eth0_g0_1894-21runrttasks09:44:100
121650390irq/29-eth0_g0_13-21kworker/0:111:12:280
121650390irq/29-eth0_g0_13-21kworker/0:111:12:280
121650390irq/29-eth0_g0_13-21kworker/0:110:48:030
121650390irq/29-eth0_g0_13-21kworker/0:110:28:040
121650390irq/29-eth0_g0_13-21kworker/0:109:35:230
121650390irq/29-eth0_g0_121ksoftirqd/109:44:181
121650390irq/29-eth0_g0_0-21swapper/011:03:260
121390ksoftirqd/1121750irq/30-eth0_g0_11:41:340
121390ksoftirqd/1121750irq/30-eth0_g0_11:20:230
121390ksoftirqd/1121750irq/30-eth0_g0_09:16:030
121390ksoftirqd/1121750irq/30-eth0_g0_07:40:560
121390ksoftirqd/1121650irq/29-eth0_g0_11:08:521
121390ksoftirqd/1121650irq/29-eth0_g0_09:21:441
121390ksoftirqd/1121650irq/29-eth0_g0_07:54:311
121390ksoftirqd/1121650irq/29-eth0_g0_07:43:581
1013299392cyclictest13061-21ntpdc07:20:071
10132993919cyclictest16502-21df_inode07:34:591
1013299391cyclictest31990-21wc10:50:011
1013299391cyclictest30154-21sort08:30:021
1013299391cyclictest19230-21missed_timers12:10:021
121750380irq/30-eth0_g0_21595-21runrttasks10:07:021
121750380irq/30-eth0_g0_0-21swapper/111:46:581
121750380irq/30-eth0_g0_0-21swapper/110:44:151
121650380irq/29-eth0_g0_27234-21ntp_states10:30:130
121650380irq/29-eth0_g0_1894-21runrttasks09:02:180
121650380irq/29-eth0_g0_1894-21runrttasks07:58:330
121650380irq/29-eth0_g0_1894-21runrttasks07:58:330
121650380irq/29-eth0_g0_15931-21unixbench_singl11:55:090
121650380irq/29-eth0_g0_15931-21unixbench_singl11:55:090
121650380irq/29-eth0_g0_13-21kworker/0:112:25:540
121650380irq/29-eth0_g0_12275-21entropy09:29:580
121380ksoftirqd/1121650irq/29-eth0_g0_09:49:471
1013299381cyclictest6659-21/usr/sbin/munin11:19:561
1013299381cyclictest64612sleep109:05:131
1013299381cyclictest26827-21chrt08:15:081
1013299381cyclictest21903-21grep07:55:081
1013299381cyclictest21903-21grep07:55:081
1013299381cyclictest10748-21rt-features07:10:061
121750370irq/30-eth0_g0_1219-21kworker/1:211:39:141
121650370irq/29-eth0_g0_28086-21unixbench_singl08:20:090
121650370irq/29-eth0_g0_1894-21runrttasks08:04:030
121650370irq/29-eth0_g0_16813-21proc_pri07:35:070
121650370irq/29-eth0_g0_13-21kworker/0:111:51:510
121650370irq/29-eth0_g0_13-21kworker/0:110:50:010
121650370irq/29-eth0_g0_13-21kworker/0:110:40:020
121650370irq/29-eth0_g0_13-21kworker/0:109:45:410
121650370irq/29-eth0_g0_13-21kworker/0:109:22:100
121370ksoftirqd/1121650irq/29-eth0_g0_09:01:011
1013299371cyclictest6570-21latency_hist11:19:451
1013299371cyclictest29307-21unixbench_singl08:25:091
121650360irq/29-eth0_g0_3460-21latency_hist08:54:450
121650360irq/29-eth0_g0_30518-21unixbench_singl08:30:080
121650360irq/29-eth0_g0_24235-21sendmail_mailqu08:05:070
121650360irq/29-eth0_g0_19511-21unixbench_singl07:45:120
121650360irq/29-eth0_g0_1894-21runrttasks08:24:560
121650360irq/29-eth0_g0_1894-21runrttasks07:53:470
121650360irq/29-eth0_g0_1894-21runrttasks07:30:290
121650360irq/29-eth0_g0_1894-21runrttasks07:17:590
121650360irq/29-eth0_g0_13-21kworker/0:110:22:080
121650360irq/29-eth0_g0_121ksoftirqd/110:21:121
121650360irq/29-eth0_g0_0-21swapper/110:12:031
1013299361cyclictest7801-21sort09:10:061
1013299361cyclictest31153-21unixbench_multi10:45:091
1013299361cyclictest12634-21cat07:19:461
121750350irq/30-eth0_g0_0-21swapper/112:25:461
121650350irq/29-eth0_g0_489-21unixbench_multi08:40:080
121650350irq/29-eth0_g0_26458-21ls08:15:020
121650350irq/29-eth0_g0_25298-21nfs_client08:10:030
1013299351cyclictest27480-21unixbench_multi10:30:171
1013299351cyclictest22719-21cat08:00:011
121650340irq/29-eth0_g0_6461-21taskset09:05:130
121650340irq/29-eth0_g0_10683-21proc_pri07:10:060
121340ksoftirqd/119781-21taskset07:48:021
121650330irq/29-eth0_g0_31224-21forks08:35:000
121330ksoftirqd/1121650irq/29-eth0_g0_08:38:201
121750320irq/30-eth0_g0_0-21swapper/108:19:581
121650320irq/29-eth0_g0_15578-21proc_pri07:30:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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