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2025-10-27 - 14:36

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 Thu Oct 23, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211270ksoftirqd/1121550irq/30-eth0_g0_00:11:521
121820ksoftirqd/1121550irq/30-eth0_g0_00:15:461
121820ksoftirqd/1121550irq/30-eth0_g0_00:15:461
121790ksoftirqd/1121550irq/30-eth0_g0_19:54:260
121790ksoftirqd/1121550irq/30-eth0_g0_19:54:260
187712670sleep1121450irq/29-eth0_g0_22:20:391
121630ksoftirqd/1121550irq/30-eth0_g0_22:59:420
183752560sleep1121450irq/29-eth0_g0_00:32:081
172052560sleep0121550irq/30-eth0_g0_00:27:480
121520ksoftirqd/1121550irq/30-eth0_g0_23:40:541
121450510irq/29-eth0_g0_31ksoftirqd/000:35:110
105072500chrt121550irq/30-eth0_g0_19:35:121
121490ksoftirqd/1121550irq/30-eth0_g0_23:02:361
121490ksoftirqd/1121550irq/30-eth0_g0_22:25:101
66312480chrt121550irq/30-eth0_g0_21:32:041
121450470irq/29-eth0_g0_13-21kworker/0:122:11:030
121470ksoftirqd/1121450irq/29-eth0_g0_19:18:281
224202460chrt121450irq/29-eth0_g0_22:35:191
121450460irq/29-eth0_g0_13-21kworker/0:123:09:490
121460ksoftirqd/1121450irq/29-eth0_g0_22:14:161
121460ksoftirqd/1121450irq/29-eth0_g0_19:45:051
121450450irq/29-eth0_g0_31ksoftirqd/022:53:250
121450ksoftirqd/1121450irq/29-eth0_g0_21:17:371
66952440sleep0121450irq/29-eth0_g0_21:32:490
121450440irq/29-eth0_g0_121ksoftirqd/120:02:400
121440ksoftirqd/1121450irq/29-eth0_g0_22:50:111
121550430irq/30-eth0_g0_1221-21kworker/1:222:17:221
121550430irq/30-eth0_g0_1221-21kworker/1:222:17:221
121550430irq/30-eth0_g0_1221-21kworker/1:221:54:431
121450430irq/29-eth0_g0_31ksoftirqd/022:19:060
121450430irq/29-eth0_g0_31ksoftirqd/022:19:060
121450430irq/29-eth0_g0_31ksoftirqd/022:01:350
121450430irq/29-eth0_g0_13-21kworker/0:122:07:220
121450430irq/29-eth0_g0_121ksoftirqd/123:48:390
121450430irq/29-eth0_g0_121ksoftirqd/121:22:340
121450430irq/29-eth0_g0_121ksoftirqd/100:16:190
121450430irq/29-eth0_g0_121ksoftirqd/100:16:190
121430ksoftirqd/1121450irq/29-eth0_g0_19:12:191
121550420irq/30-eth0_g0_1221-21kworker/1:223:16:391
121450420irq/29-eth0_g0_31ksoftirqd/020:50:060
121420ksoftirqd/1121550irq/30-eth0_g0_23:20:171
121420ksoftirqd/1121550irq/30-eth0_g0_23:20:171
121420ksoftirqd/1121450irq/29-eth0_g0_22:30:141
121450410irq/29-eth0_g0_31ksoftirqd/021:12:030
121450410irq/29-eth0_g0_31ksoftirqd/000:33:070
121450410irq/29-eth0_g0_13-21kworker/0:123:29:490
121450410irq/29-eth0_g0_13-21kworker/0:121:59:230
121450410irq/29-eth0_g0_13-21kworker/0:121:15:090
121450410irq/29-eth0_g0_121ksoftirqd/122:30:530
121450410irq/29-eth0_g0_121ksoftirqd/119:55:140
121450410irq/29-eth0_g0_0-21swapper/023:00:060
121450410irq/29-eth0_g0_0-21swapper/019:04:540
121410ksoftirqd/1121450irq/29-eth0_g0_23:33:511
121410ksoftirqd/1121450irq/29-eth0_g0_22:08:251
121410ksoftirqd/1121450irq/29-eth0_g0_19:24:591
121450400irq/29-eth0_g0_79992sleep121:38:441
121450400irq/29-eth0_g0_31ksoftirqd/020:20:070
121450400irq/29-eth0_g0_31ksoftirqd/000:06:320
121450400irq/29-eth0_g0_13-21kworker/0:123:22:330
121450400irq/29-eth0_g0_13-21kworker/0:123:22:330
121450400irq/29-eth0_g0_13-21kworker/0:122:44:050
121450400irq/29-eth0_g0_13-21kworker/0:122:35:130
121400ksoftirqd/1121450irq/29-eth0_g0_22:55:101
121400ksoftirqd/1121450irq/29-eth0_g0_20:38:281
121400ksoftirqd/1121450irq/29-eth0_g0_19:59:121
121400ksoftirqd/1121450irq/29-eth0_g0_19:30:251
121400ksoftirqd/1121450irq/29-eth0_g0_00:07:311
121550390irq/30-eth0_g0_31ksoftirqd/000:02:590
121550390irq/30-eth0_g0_1221-21kworker/1:221:12:141
121450390irq/29-eth0_g0_9126-21sh23:55:040
121450390irq/29-eth0_g0_9077-21runrttasks21:41:590
121450390irq/29-eth0_g0_31ksoftirqd/023:49:570
121450390irq/29-eth0_g0_13-21kworker/0:123:40:500
121450390irq/29-eth0_g0_13-21kworker/0:123:15:160
121450390irq/29-eth0_g0_13-21kworker/0:122:21:170
121450390irq/29-eth0_g0_13-21kworker/0:121:47:160
121450390irq/29-eth0_g0_13-21kworker/0:121:47:160
121450390irq/29-eth0_g0_13-21kworker/0:121:35:300
121450390irq/29-eth0_g0_13-21kworker/0:100:09:540
121390ksoftirqd/1121450irq/29-eth0_g0_23:53:551
121390ksoftirqd/1121450irq/29-eth0_g0_23:39:071
121390ksoftirqd/1121450irq/29-eth0_g0_21:29:390
121390ksoftirqd/1121450irq/29-eth0_g0_20:27:311
121390ksoftirqd/1121450irq/29-eth0_g0_20:21:181
121390ksoftirqd/1121450irq/29-eth0_g0_00:00:221
121550380irq/30-eth0_g0_1221-21kworker/1:223:08:311
121550380irq/30-eth0_g0_1221-21kworker/1:221:56:581
121550380irq/30-eth0_g0_1221-21kworker/1:221:40:211
121550380irq/30-eth0_g0_0-21swapper/121:27:321
121550380irq/30-eth0_g0_0-21swapper/100:36:391
121450380irq/29-eth0_g0_32007-21/usr/sbin/munin21:04:590
121450380irq/29-eth0_g0_32007-21/usr/sbin/munin21:04:590
121450380irq/29-eth0_g0_1961-21runrttasks20:42:380
121450380irq/29-eth0_g0_13-21kworker/0:123:32:160
121450380irq/29-eth0_g0_13-21kworker/0:122:45:000
121450380irq/29-eth0_g0_13-21kworker/0:122:25:320
121450380irq/29-eth0_g0_13-21kworker/0:100:24:360
121380ksoftirqd/1121450irq/29-eth0_g0_23:47:311
121380ksoftirqd/1121450irq/29-eth0_g0_23:13:341
121380ksoftirqd/1121450irq/29-eth0_g0_21:04:261
121380ksoftirqd/1121450irq/29-eth0_g0_20:50:101
121380ksoftirqd/1121450irq/29-eth0_g0_19:59:521
121380ksoftirqd/1121450irq/29-eth0_g0_19:24:491
117450380irq/72-mmc00-21swapper/120:33:181
121550370irq/30-eth0_g0_31ksoftirqd/019:25:130
121450370irq/29-eth0_g0_30338-21sed23:10:050
121450370irq/29-eth0_g0_25801-21latency_hist20:39:500
121450370irq/29-eth0_g0_19868-21df20:15:010
121450370irq/29-eth0_g0_1961-21runrttasks19:44:530
121450370irq/29-eth0_g0_13-21kworker/0:123:38:440
121450370irq/29-eth0_g0_13-21kworker/0:121:50:370
121370ksoftirqd/1121450irq/29-eth0_g0_21:22:031
121370ksoftirqd/1121450irq/29-eth0_g0_20:42:041
121550360irq/30-eth0_g0_690-21diskmemload23:59:101
121550360irq/30-eth0_g0_1221-21kworker/1:221:48:181
121550360irq/30-eth0_g0_1221-21kworker/1:221:48:181
121450360irq/29-eth0_g0_1961-21runrttasks19:40:340
121450360irq/29-eth0_g0_1929-21sshd20:34:330
121360ksoftirqd/1121450irq/29-eth0_g0_22:46:511
121360ksoftirqd/1121450irq/29-eth0_g0_22:40:581
121360ksoftirqd/1121450irq/29-eth0_g0_19:50:131
121360ksoftirqd/1121450irq/29-eth0_g0_19:50:131
121550350irq/30-eth0_g0_1221-21kworker/1:223:27:321
121550350irq/30-eth0_g0_1221-21kworker/1:200:23:531
121450350irq/29-eth0_g0_4355-21sendmail_mailtr19:10:100
121450350irq/29-eth0_g0_1961-21runrttasks21:03:510
121450350irq/29-eth0_g0_1961-21runrttasks19:17:450
121450350irq/29-eth0_g0_1961-21runrttasks19:09:131
121450350irq/29-eth0_g0_17820-21find20:05:090
121350ksoftirqd/119985-21cat20:15:041
121550340irq/30-eth0_g0_690-21diskmemload00:29:131
121550340irq/30-eth0_g0_29783-21iostat20:55:031
121550340irq/30-eth0_g0_12290-21latency_hist19:44:501
121450340irq/29-eth0_g0_417-21runrttasks21:06:461
121450340irq/29-eth0_g0_417-21runrttasks21:06:461
121450340irq/29-eth0_g0_30081-21zcat20:55:090
121450340irq/29-eth0_g0_1961-21runrttasks19:31:470
121450340irq/29-eth0_g0_10644-21uptime19:35:130
121340ksoftirqd/1121550irq/30-eth0_g0_22:00:411
121340ksoftirqd/1121450irq/29-eth0_g0_20:05:101
121450330irq/29-eth0_g0_28183-21runrttasks20:49:151
121450330irq/29-eth0_g0_22264-21df_abs20:25:030
121450330irq/29-eth0_g0_1961-21runrttasks20:47:360
121450330irq/29-eth0_g0_0-21swapper/020:10:100
370899321cyclictest0-21swapper/120:09:551
121450320irq/29-eth0_g0_7428-21latency_hist19:24:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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