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2026-05-05 - 04:11

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 Tue May 05, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
539721410sleep0121450irq/29-eth0_g0_22:37:570
296422720chrt121450irq/29-eth0_g0_21:17:360
121450560irq/29-eth0_g0_1653699cyclictest21:09:170
121450520irq/29-eth0_g0_1653699cyclictest21:22:130
121550510irq/30-eth0_g0_1653699cyclictest00:11:110
121450510irq/29-eth0_g0_1653699cyclictest00:09:090
121550500irq/30-eth0_g0_1653699cyclictest21:39:530
121550500irq/30-eth0_g0_1653699cyclictest21:31:280
121450480irq/29-eth0_g0_1653699cyclictest23:47:110
121450480irq/29-eth0_g0_1653699cyclictest22:39:540
121450480irq/29-eth0_g0_1653699cyclictest21:46:220
121450470irq/29-eth0_g0_1653699cyclictest23:35:130
121450470irq/29-eth0_g0_1653699cyclictest22:33:570
121450470irq/29-eth0_g0_1653699cyclictest22:04:350
121450470irq/29-eth0_g0_1653699cyclictest00:17:260
121450460irq/29-eth0_g0_1653699cyclictest00:21:270
121450460irq/29-eth0_g0_1653699cyclictest00:21:270
121460ksoftirqd/1121550irq/30-eth0_g0_21:39:341
121550450irq/30-eth0_g0_1221-21kworker/1:222:13:161
121550450irq/30-eth0_g0_1221-21kworker/1:221:23:441
121450450irq/29-eth0_g0_1653699cyclictest22:54:160
121450450irq/29-eth0_g0_1653699cyclictest19:28:360
121550440irq/30-eth0_g0_1221-21kworker/1:223:02:211
121550440irq/30-eth0_g0_1221-21kworker/1:222:21:271
121450440irq/29-eth0_g0_1653699cyclictest23:09:390
121450440irq/29-eth0_g0_1653699cyclictest22:18:310
121450440irq/29-eth0_g0_1653699cyclictest00:30:430
121450430irq/29-eth0_g0_1653699cyclictest23:57:150
121550420irq/30-eth0_g0_121ksoftirqd/100:29:161
121420ksoftirqd/1121450irq/29-eth0_g0_23:09:381
121420ksoftirqd/1121450irq/29-eth0_g0_22:55:521
290592400sleep1121450irq/29-eth0_g0_21:11:461
121550400irq/30-eth0_g0_1221-21kworker/1:221:58:301
121450400irq/29-eth0_g0_1653699cyclictest22:49:090
121550390irq/30-eth0_g0_1221-21kworker/1:223:22:231
121550390irq/30-eth0_g0_1221-21kworker/1:223:05:091
121550390irq/30-eth0_g0_1221-21kworker/1:221:28:201
121450390irq/29-eth0_g0_121ksoftirqd/122:34:201
103472390sleep1121550irq/30-eth0_g0_23:26:211
121550380irq/30-eth0_g0_1221-21kworker/1:223:55:061
121550380irq/30-eth0_g0_1221-21kworker/1:223:29:361
121550380irq/30-eth0_g0_1221-21kworker/1:222:50:161
121550380irq/30-eth0_g0_1221-21kworker/1:222:30:091
121550380irq/30-eth0_g0_1221-21kworker/1:221:36:161
121550380irq/30-eth0_g0_1221-21kworker/1:200:37:261
121550380irq/30-eth0_g0_1221-21kworker/1:200:21:191
121550380irq/30-eth0_g0_1221-21kworker/1:200:21:191
121550380irq/30-eth0_g0_1221-21kworker/1:200:05:521
121550380irq/30-eth0_g0_121ksoftirqd/100:03:211
121450380irq/29-eth0_g0_13-21kworker/0:123:21:250
121550370irq/30-eth0_g0_1221-21kworker/1:223:37:531
121550370irq/30-eth0_g0_1221-21kworker/1:223:17:261
121550370irq/30-eth0_g0_1221-21kworker/1:222:45:121
121550370irq/30-eth0_g0_1221-21kworker/1:222:05:531
121550370irq/30-eth0_g0_1221-21kworker/1:221:49:591
121550370irq/30-eth0_g0_1221-21kworker/1:221:17:411
121450370irq/29-eth0_g0_1911-21runrttasks19:06:140
121450370irq/29-eth0_g0_1911-21runrttasks00:14:551
121370ksoftirqd/1121450irq/29-eth0_g0_21:29:541
121550360irq/30-eth0_g0_1982-21lldpd00:29:271
121550360irq/30-eth0_g0_1221-21kworker/1:223:39:581
121550360irq/30-eth0_g0_1221-21kworker/1:222:43:161
121550360irq/30-eth0_g0_1221-21kworker/1:222:17:471
121550360irq/30-eth0_g0_1221-21kworker/1:221:47:201
121550360irq/30-eth0_g0_1221-21kworker/1:200:10:291
121450360irq/29-eth0_g0_13-21kworker/0:100:34:330
121450360irq/29-eth0_g0_121ksoftirqd/123:47:281
121360ksoftirqd/116534-21munin-run19:09:161
121550350irq/30-eth0_g0_22684-21latency_hist20:09:171
121550350irq/30-eth0_g0_1221-21kworker/1:222:24:261
121550350irq/30-eth0_g0_0-21swapper/123:51:261
121450350irq/29-eth0_g0_31ksoftirqd/023:32:130
121450350irq/29-eth0_g0_1653699cyclictest22:21:410
121450350irq/29-eth0_g0_0-21swapper/023:05:060
121450350irq/29-eth0_g0_0-21swapper/000:00:540
121550340irq/30-eth0_g0_13-21kworker/0:121:52:230
121550340irq/30-eth0_g0_0-21swapper/121:59:531
121450340irq/29-eth0_g0_28766-21diskmemload23:42:390
43132330sleep0121450irq/29-eth0_g0_22:27:100
121450330irq/29-eth0_g0_0-21swapper/022:57:280
121450330irq/29-eth0_g0_0-21swapper/021:39:110
121450330irq/29-eth0_g0_0-21swapper/000:28:280
121550320irq/30-eth0_g0_0-21swapper/120:39:001
121550320irq/30-eth0_g0_0-21swapper/120:21:521
121550320irq/30-eth0_g0_0-21swapper/120:02:441
121550320irq/30-eth0_g0_0-21swapper/119:56:581
121550320irq/30-eth0_g0_0-21swapper/119:19:211
121450320irq/29-eth0_g0_28766-21diskmemload23:53:410
121450320irq/29-eth0_g0_20618-21latency_hist19:49:171
121450320irq/29-eth0_g0_1911-21runrttasks19:32:370
121450320irq/29-eth0_g0_1653699cyclictest21:58:060
121450320irq/29-eth0_g0_0-21swapper/023:19:170
121450320irq/29-eth0_g0_0-21swapper/023:02:320
121550310irq/30-eth0_g0_0-21swapper/120:50:331
121550310irq/30-eth0_g0_0-21swapper/120:33:481
121550310irq/30-eth0_g0_0-21swapper/120:24:511
121550310irq/30-eth0_g0_0-21swapper/119:43:031
121450310irq/29-eth0_g0_1653699cyclictest20:53:430
121450310irq/29-eth0_g0_13-21kworker/0:123:24:520
121450310irq/29-eth0_g0_0-21swapper/022:11:420
121550300irq/30-eth0_g0_26726-21munin-run20:49:171
121550300irq/30-eth0_g0_0-21swapper/120:16:081
121550300irq/30-eth0_g0_0-21swapper/119:29:021
121550300irq/30-eth0_g0_0-21swapper/119:11:131
121450300irq/29-eth0_g0_22422-21taskset20:06:370
121450300irq/29-eth0_g0_1911-21runrttasks20:16:170
121450300irq/29-eth0_g0_13-21kworker/0:121:12:060
121450300irq/29-eth0_g0_0-21swapper/021:26:430
121550290irq/30-eth0_g0_0-21swapper/121:05:361
121550290irq/30-eth0_g0_0-21swapper/121:02:471
121550290irq/30-eth0_g0_0-21swapper/119:50:521
121550290irq/30-eth0_g0_0-21swapper/119:35:591
121550290irq/30-eth0_g0_0-21swapper/119:33:451
121550290irq/30-eth0_g0_0-21swapper/119:17:141
121450290irq/29-eth0_g0_25966-21runrttasks20:41:241
121450290irq/29-eth0_g0_1653699cyclictest20:28:360
121450290irq/29-eth0_g0_0-21swapper/021:59:500
121450290irq/29-eth0_g0_0-21swapper/020:40:300
121450290irq/29-eth0_g0_0-21swapper/020:37:350
121450290irq/29-eth0_g0_0-21swapper/020:19:380
121450290irq/29-eth0_g0_0-21swapper/019:57:460
121450290irq/29-eth0_g0_0-21swapper/019:50:220
121450290irq/29-eth0_g0_0-21swapper/019:48:220
121450290irq/29-eth0_g0_0-21swapper/019:39:380
1099290migration/127747-21taskset20:59:171
121550280irq/30-eth0_g0_1911-21runrttasks19:10:340
121450280irq/29-eth0_g0_1966-21snmpd20:29:360
121450280irq/29-eth0_g0_0-21swapper/020:55:460
121450280irq/29-eth0_g0_0-21swapper/020:47:130
121450280irq/29-eth0_g0_0-21swapper/020:14:150
121450280irq/29-eth0_g0_0-21swapper/020:00:430
121450280irq/29-eth0_g0_0-21swapper/019:34:300
121450280irq/29-eth0_g0_0-21swapper/019:19:270
121450280irq/29-eth0_g0_0-21swapper/019:16:480
121450270irq/29-eth0_g0_0-21swapper/021:03:500
121550260irq/30-eth0_g0_0-21swapper/120:11:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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