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2025-11-23 - 07:38

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Sun Nov 23, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1775521610sleep1121650irq/29-eth0_g0_22:47:351
1775521610sleep1121650irq/29-eth0_g0_22:47:351
22022920chrt121750irq/30-eth0_g0_23:55:080
155422780sleep1121750irq/30-eth0_g0_22:39:451
139072770sleep0121650irq/29-eth0_g0_22:30:370
121770ksoftirqd/1121650irq/29-eth0_g0_23:00:060
67922740sleep1121750irq/30-eth0_g0_19:50:041
111632670sleep1121650irq/29-eth0_g0_00:33:111
73442600sleep0121750irq/30-eth0_g0_00:16:340
121550ksoftirqd/1121750irq/30-eth0_g0_23:40:291
35902530sleep1121750irq/30-eth0_g0_00:00:431
103032500sleep1121650irq/29-eth0_g0_22:16:321
131282490sleep1121750irq/30-eth0_g0_22:29:551
121490ksoftirqd/1121650irq/29-eth0_g0_22:16:050
121470ksoftirqd/1121750irq/30-eth0_g0_21:50:071
121470ksoftirqd/1121750irq/30-eth0_g0_00:15:151
121650460irq/29-eth0_g0_1894-21runrttasks21:51:270
121750450irq/30-eth0_g0_1219-21kworker/1:221:15:171
121750440irq/30-eth0_g0_121ksoftirqd/122:54:441
121440ksoftirqd/1121650irq/29-eth0_g0_00:36:431
87042430sleep1121750irq/30-eth0_g0_00:23:071
28292430sleep1121750irq/30-eth0_g0_21:45:131
121650430irq/29-eth0_g0_28769-21munin-run19:09:440
121430ksoftirqd/1121750irq/30-eth0_g0_23:21:210
121430ksoftirqd/1121750irq/30-eth0_g0_23:15:020
121430ksoftirqd/1121750irq/30-eth0_g0_23:05:030
121430ksoftirqd/1121650irq/29-eth0_g0_23:55:301
121750420irq/30-eth0_g0_1219-21kworker/1:222:42:441
121650420irq/29-eth0_g0_121ksoftirqd/123:39:441
121420ksoftirqd/1121650irq/29-eth0_g0_21:56:101
121750410irq/30-eth0_g0_1219-21kworker/1:222:02:001
121750410irq/30-eth0_g0_0-21swapper/123:33:011
121650410irq/29-eth0_g0_1894-21runrttasks22:24:420
121750400irq/30-eth0_g0_1219-21kworker/1:221:41:071
121750400irq/30-eth0_g0_1219-21kworker/1:200:28:471
121750400irq/30-eth0_g0_121ksoftirqd/123:29:001
121750400irq/30-eth0_g0_121ksoftirqd/121:39:081
121750400irq/30-eth0_g0_121ksoftirqd/121:39:081
121650400irq/29-eth0_g0_27609-21processes21:15:050
121650400irq/29-eth0_g0_1894-21runrttasks21:37:570
121650400irq/29-eth0_g0_1894-21runrttasks21:37:570
121650400irq/29-eth0_g0_13-21kworker/0:122:46:120
121650400irq/29-eth0_g0_13-21kworker/0:122:46:120
121650400irq/29-eth0_g0_13-21kworker/0:121:12:420
121650400irq/29-eth0_g0_0-21swapper/023:51:450
121400ksoftirqd/1121750irq/30-eth0_g0_19:22:340
121750390irq/30-eth0_g0_1219-21kworker/1:222:56:351
121750390irq/30-eth0_g0_1219-21kworker/1:222:06:051
121750390irq/30-eth0_g0_1219-21kworker/1:221:20:351
121750390irq/30-eth0_g0_121ksoftirqd/123:21:411
121750390irq/30-eth0_g0_121ksoftirqd/123:16:141
121750390irq/30-eth0_g0_121ksoftirqd/121:32:461
121650390irq/29-eth0_g0_1894-21runrttasks21:41:370
121650390irq/29-eth0_g0_13-21kworker/0:123:46:050
121650390irq/29-eth0_g0_13-21kworker/0:121:26:430
121650390irq/29-eth0_g0_13-21kworker/0:100:27:070
121390ksoftirqd/1121750irq/30-eth0_g0_00:35:530
121750380irq/30-eth0_g0_28269-21tail19:05:081
121750380irq/30-eth0_g0_1219-21kworker/1:223:50:571
121750380irq/30-eth0_g0_1219-21kworker/1:223:13:011
121750380irq/30-eth0_g0_1219-21kworker/1:222:59:561
121750380irq/30-eth0_g0_1219-21kworker/1:222:11:571
121750380irq/30-eth0_g0_1219-21kworker/1:221:25:471
121750380irq/30-eth0_g0_1219-21kworker/1:200:05:301
121750380irq/30-eth0_g0_121ksoftirqd/123:08:551
121750380irq/30-eth0_g0_121ksoftirqd/121:10:341
121650380irq/29-eth0_g0_27311-21unixbench_singl23:25:090
121650380irq/29-eth0_g0_23407-21chrt23:10:040
121650380irq/29-eth0_g0_16510-21seq22:42:230
121650380irq/29-eth0_g0_13-21kworker/0:122:52:020
121650380irq/29-eth0_g0_13-21kworker/0:122:35:480
121650380irq/29-eth0_g0_13-21kworker/0:122:10:500
121650380irq/29-eth0_g0_13-21kworker/0:122:08:290
121650380irq/29-eth0_g0_13-21kworker/0:121:57:060
121650380irq/29-eth0_g0_13-21kworker/0:121:21:060
121650380irq/29-eth0_g0_13-21kworker/0:100:10:130
121650380irq/29-eth0_g0_13-21kworker/0:100:07:000
121650380irq/29-eth0_g0_121ksoftirqd/122:28:111
121650380irq/29-eth0_g0_0-21swapper/022:01:490
121380ksoftirqd/1121650irq/29-eth0_g0_20:53:360
121750370irq/30-eth0_g0_1894-21runrttasks19:43:261
121750370irq/30-eth0_g0_1219-21kworker/1:223:46:441
121750370irq/30-eth0_g0_1219-21kworker/1:222:19:511
121750370irq/30-eth0_g0_121ksoftirqd/100:12:191
121650370irq/29-eth0_g0_617-21awk19:25:050
121650370irq/29-eth0_g0_29486-21ntp_states23:35:010
121650370irq/29-eth0_g0_13-21kworker/0:123:40:170
121650370irq/29-eth0_g0_13-21kworker/0:123:30:480
121650370irq/29-eth0_g0_13-21kworker/0:122:26:520
121650370irq/29-eth0_g0_13-21kworker/0:121:47:500
121650370irq/29-eth0_g0_13-21kworker/0:121:32:050
121650370irq/29-eth0_g0_13-21kworker/0:100:23:550
121650370irq/29-eth0_g0_13-21kworker/0:100:02:400
121650370irq/29-eth0_g0_10417-21proc_pri20:05:050
28772993623cyclictest1894-21runrttasks20:40:261
121650360irq/29-eth0_g0_23823-21runrttasks21:00:010
121650360irq/29-eth0_g0_22547-21missed_timers20:55:000
121650360irq/29-eth0_g0_1894-21runrttasks19:13:180
121650360irq/29-eth0_g0_1873-21processes19:30:050
121650360irq/29-eth0_g0_15537-21unixbench_singl20:25:090
121650360irq/29-eth0_g0_13-21kworker/0:122:55:130
121650360irq/29-eth0_g0_13-21kworker/0:100:30:310
121650350irq/29-eth0_g0_8726-21/usr/sbin/munin19:59:580
121650350irq/29-eth0_g0_8139-21unixbench_multi19:55:080
121650350irq/29-eth0_g0_6269-21/usr/sbin/munin19:50:060
121650350irq/29-eth0_g0_3582-21runrttasks19:38:090
121650350irq/29-eth0_g0_19078-21wc20:40:050
121650350irq/29-eth0_g0_17976-21unixbench_multi20:35:070
121650350irq/29-eth0_g0_16157-21df_abs20:29:560
121650350irq/29-eth0_g0_14421-21runrttasks20:20:450
121650340irq/29-eth0_g0_5735-21unixbench_singl19:45:060
121650340irq/29-eth0_g0_4212-21ntpq19:40:040
121650340irq/29-eth0_g0_25212-21find21:05:050
121650340irq/29-eth0_g0_20935-21seq20:49:450
121650340irq/29-eth0_g0_20935-21seq20:49:450
121650340irq/29-eth0_g0_11345-21taskset20:09:580
121650340irq/29-eth0_g0_0-21swapper/020:14:590
121340ksoftirqd/124669-21runrttasks21:04:491
61782330sleep16177-21munin-run19:49:451
28772993320cyclictest31227-21munin-run19:19:441
121750330irq/30-eth0_g0_22824-21grep20:55:061
121750330irq/30-eth0_g0_1894-21runrttasks19:27:241
121750330irq/30-eth0_g0_10667-21uptime20:05:081
121650330irq/29-eth0_g0_30719-21unixbench_multi19:15:050
121750320irq/30-eth0_g0_19904-21df_abs20:44:571
121750320irq/30-eth0_g0_19904-21df_abs20:44:571
121650320irq/29-eth0_g0_1894-21runrttasks20:10:191
28772993119cyclictest291272sleep119:10:011
121750310irq/30-eth0_g0_1894-21runrttasks20:20:041
121750300irq/30-eth0_g0_0-21swapper/119:30:261
121300ksoftirqd/141350irq/23-fsldma-c20:29:551
121300ksoftirqd/13132-21expr19:35:091
41250290irq/22-fsldma-c14866-21/usr/sbin/munin20:25:011
28772992917cyclictest22158-21date20:54:441
121750290irq/30-eth0_g0_0-21swapper/120:15:011
121650290irq/29-eth0_g0_2877299cyclictest20:35:021
121650290irq/29-eth0_g0_23515-21/usr/sbin/munin20:59:561
121650290irq/29-eth0_g0_1894-21runrttasks19:59:401
121650290irq/29-eth0_g0_0-21swapper/120:00:031
121750280irq/30-eth0_g0_0-21swapper/119:24:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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