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2025-12-29 - 08:41

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Mon Dec 29, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
484621290sleep1121650irq/29-eth0_g0_22:01:561
223332780sleep0121750irq/30-eth0_g0_21:00:240
121770ksoftirqd/1121750irq/30-eth0_g0_21:21:471
269552720sleep1121750irq/30-eth0_g0_23:32:101
166852580sleep1121650irq/29-eth0_g0_22:50:171
83302520sleep1121750irq/30-eth0_g0_22:15:231
244852520sleep1121650irq/29-eth0_g0_23:21:591
262322500sleep1121750irq/30-eth0_g0_19:05:171
121650490irq/29-eth0_g0_26506-21unixbench_singl19:05:210
121490ksoftirqd/1121650irq/29-eth0_g0_22:20:151
121490ksoftirqd/1121650irq/29-eth0_g0_22:20:151
121650480irq/29-eth0_g0_31ksoftirqd/000:30:130
121650470irq/29-eth0_g0_31ksoftirqd/022:28:560
121650470irq/29-eth0_g0_13-21kworker/0:122:41:010
121750450irq/30-eth0_g0_1219-21kworker/1:200:18:251
121650450irq/29-eth0_g0_31ksoftirqd/000:09:550
121750440irq/30-eth0_g0_1219-21kworker/1:223:44:041
121650440irq/29-eth0_g0_8685-21rt-features20:05:200
121650440irq/29-eth0_g0_31ksoftirqd/023:14:090
121650430irq/29-eth0_g0_31ksoftirqd/023:09:280
121650430irq/29-eth0_g0_31ksoftirqd/021:35:230
121750420irq/30-eth0_g0_1219-21kworker/1:223:56:111
121750420irq/30-eth0_g0_1219-21kworker/1:200:31:221
121650420irq/29-eth0_g0_31ksoftirqd/022:32:100
121650420irq/29-eth0_g0_31ksoftirqd/022:19:540
121650420irq/29-eth0_g0_1904-21runrttasks21:19:030
121420ksoftirqd/1121750irq/30-eth0_g0_00:24:090
49552410sleep0121750irq/30-eth0_g0_22:03:120
322202410sleep0121750irq/30-eth0_g0_21:40:220
121750410irq/30-eth0_g0_22260-21taskset23:14:391
121750410irq/30-eth0_g0_1219-21kworker/1:221:32:561
121650410irq/29-eth0_g0_31ksoftirqd/022:21:050
121650410irq/29-eth0_g0_31ksoftirqd/022:21:050
121650410irq/29-eth0_g0_31ksoftirqd/022:08:210
121650410irq/29-eth0_g0_13-21kworker/0:122:49:340
121650410irq/29-eth0_g0_13-21kworker/0:100:03:560
121650410irq/29-eth0_g0_121ksoftirqd/123:45:590
121410ksoftirqd/1121650irq/29-eth0_g0_21:40:191
121750400irq/30-eth0_g0_26274-21taskset21:17:371
121750400irq/30-eth0_g0_1219-21kworker/1:223:37:141
121750400irq/30-eth0_g0_1219-21kworker/1:222:47:471
121750400irq/30-eth0_g0_1219-21kworker/1:221:11:321
121750400irq/30-eth0_g0_1219-21kworker/1:221:11:321
121750400irq/30-eth0_g0_1219-21kworker/1:200:07:121
121650400irq/29-eth0_g0_23443-21sendmail_mailtr21:05:240
121650400irq/29-eth0_g0_226452chrt23:15:150
121650400irq/29-eth0_g0_13-21kworker/0:123:29:290
121650400irq/29-eth0_g0_13-21kworker/0:123:29:290
121650400irq/29-eth0_g0_13-21kworker/0:123:23:300
121650400irq/29-eth0_g0_13-21kworker/0:122:10:160
121650400irq/29-eth0_g0_13-21kworker/0:121:57:580
121650400irq/29-eth0_g0_13-21kworker/0:121:21:350
121650400irq/29-eth0_g0_121ksoftirqd/123:41:590
121650400irq/29-eth0_g0_121ksoftirqd/122:35:180
121400ksoftirqd/1121650irq/29-eth0_g0_20:03:271
121750390irq/30-eth0_g0_1219-21kworker/1:223:50:121
121750390irq/30-eth0_g0_1219-21kworker/1:223:02:411
121750390irq/30-eth0_g0_1219-21kworker/1:222:42:121
121750390irq/30-eth0_g0_1219-21kworker/1:222:26:541
121750390irq/30-eth0_g0_1219-21kworker/1:221:35:591
121750390irq/30-eth0_g0_1219-21kworker/1:200:38:581
121750390irq/30-eth0_g0_1219-21kworker/1:200:22:441
121750390irq/30-eth0_g0_1219-21kworker/1:200:13:061
121750390irq/30-eth0_g0_1219-21kworker/1:200:02:491
121650390irq/29-eth0_g0_27527-21iostat23:35:140
121650390irq/29-eth0_g0_2488-21ps19:40:210
121650390irq/29-eth0_g0_13-21kworker/0:121:32:300
121650390irq/29-eth0_g0_13-21kworker/0:121:26:260
121650390irq/29-eth0_g0_13-21kworker/0:100:26:060
121650390irq/29-eth0_g0_13-21kworker/0:100:14:490
121390ksoftirqd/1121650irq/29-eth0_g0_23:49:351
121390ksoftirqd/1121650irq/29-eth0_g0_19:56:131
121390ksoftirqd/1121650irq/29-eth0_g0_00:26:231
121750380irq/30-eth0_g0_1219-21kworker/1:223:08:381
121750380irq/30-eth0_g0_1219-21kworker/1:222:35:161
121750380irq/30-eth0_g0_1219-21kworker/1:222:05:191
121750380irq/30-eth0_g0_1219-21kworker/1:221:55:451
121750380irq/30-eth0_g0_1219-21kworker/1:221:26:161
121750380irq/30-eth0_g0_0-21swapper/122:57:151
121750380irq/30-eth0_g0_0-21swapper/121:54:481
121650380irq/29-eth0_g0_16398-21df_inode22:50:100
121650380irq/29-eth0_g0_13-21kworker/0:123:31:120
121650380irq/29-eth0_g0_13-21kworker/0:121:52:060
121380ksoftirqd/1121650irq/29-eth0_g0_22:10:181
121380ksoftirqd/1121650irq/29-eth0_g0_20:43:251
297632370sleep0121650irq/29-eth0_g0_19:20:140
121650370irq/29-eth0_g0_31115-21grep23:50:150
121650370irq/29-eth0_g0_31ksoftirqd/021:45:020
121650370irq/29-eth0_g0_28698-21ntpq19:15:190
121650370irq/29-eth0_g0_24191-21df21:10:140
121650370irq/29-eth0_g0_24191-21df21:10:140
121650370irq/29-eth0_g0_20854-21awk20:55:190
121650370irq/29-eth0_g0_19273-21df_abs20:50:100
121650370irq/29-eth0_g0_13-21kworker/0:123:00:050
121650370irq/29-eth0_g0_13-21kworker/0:122:56:530
121650370irq/29-eth0_g0_13-21kworker/0:100:19:410
121370ksoftirqd/18548-21ntpq20:05:171
121370ksoftirqd/1121650irq/29-eth0_g0_20:15:221
121750360irq/30-eth0_g0_1219-21kworker/1:223:15:211
121650360irq/29-eth0_g0_5912-21if_eth019:55:150
121650360irq/29-eth0_g0_3903-21unixbench_multi19:45:220
121650360irq/29-eth0_g0_1904-21runrttasks19:37:090
121650360irq/29-eth0_g0_13-21kworker/0:123:58:140
121650360irq/29-eth0_g0_13-21kworker/0:100:35:180
121360ksoftirqd/1121650irq/29-eth0_g0_21:05:181
121360ksoftirqd/1121650irq/29-eth0_g0_19:25:171
121750350irq/30-eth0_g0_28433-21sed19:15:131
121750350irq/30-eth0_g0_1219-21kworker/1:223:25:161
121750350irq/30-eth0_g0_1219-21kworker/1:223:25:161
121750350irq/30-eth0_g0_1219-21kworker/1:222:32:011
121650350irq/29-eth0_g0_7571-21tail20:00:220
121650350irq/29-eth0_g0_17391-21unixbench_multi20:40:210
121650350irq/29-eth0_g0_0-21swapper/020:23:520
121650350irq/29-eth0_g0_0-21swapper/020:23:520
121650350irq/29-eth0_g0_0-21swapper/020:19:440
121750340irq/30-eth0_g0_9945-21sendmail_mailtr20:10:221
121750340irq/30-eth0_g0_4744-21latency19:50:151
121750340irq/30-eth0_g0_19887-21unixbench_singl20:50:201
121750340irq/30-eth0_g0_1219-21kworker/1:221:47:311
121750340irq/30-eth0_g0_0-21swapper/120:34:591
121650340irq/29-eth0_g0_9759-21netstat20:10:170
121650340irq/29-eth0_g0_27461-21ntp_offset19:10:170
121650340irq/29-eth0_g0_1904-21runrttasks20:30:100
121650340irq/29-eth0_g0_1874-21sshd20:28:310
121340ksoftirqd/1121650irq/29-eth0_g0_20:55:221
121340ksoftirqd/1121650irq/29-eth0_g0_19:50:001
121750330irq/30-eth0_g0_16232-21head20:35:231
121650330irq/29-eth0_g0_0-21swapper/019:25:160
121330ksoftirqd/112251-21taskset20:20:211
121330ksoftirqd/112251-21taskset20:20:211
121330ksoftirqd/1121650irq/29-eth0_g0_20:45:131
121750320irq/30-eth0_g0_32411-21seq19:30:181
121750320irq/30-eth0_g0_29987-21proc_pri19:20:181
121750320irq/30-eth0_g0_27340-21latency19:10:151
121750320irq/30-eth0_g0_13614-21sendmail_mailst20:25:201
121750320irq/30-eth0_g0_0-21swapper/119:41:391
121650320irq/29-eth0_g0_32687-21grep19:30:210
121650320irq/29-eth0_g0_22220-21awk21:00:221
121650320irq/29-eth0_g0_1904-21runrttasks19:51:080
121650320irq/29-eth0_g0_18383-21taskset20:45:190
121650320irq/29-eth0_g0_0-21swapper/020:35:210
121320ksoftirqd/11531-21taskset19:35:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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