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2026-07-27 - 13:59

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 Mon Jul 27, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1949221500sleep0121650irq/29-eth0_g0_11:49:050
121860ksoftirqd/1121750irq/30-eth0_g0_07:36:101
177282780sleep1121750irq/30-eth0_g0_11:42:391
287562720sleep1121650irq/29-eth0_g0_10:15:231
73632690sleep1121750irq/30-eth0_g0_08:47:411
73632690sleep1121750irq/30-eth0_g0_08:47:411
35002660sleep0121650irq/29-eth0_g0_10:43:110
232632640sleep1121650irq/29-eth0_g0_12:05:111
121610ksoftirqd/1121750irq/30-eth0_g0_11:08:281
121510ksoftirqd/1121650irq/29-eth0_g0_10:16:370
121500ksoftirqd/1121750irq/30-eth0_g0_10:56:181
121500ksoftirqd/1121750irq/30-eth0_g0_09:48:400
121500ksoftirqd/1121750irq/30-eth0_g0_09:19:230
158202490sleep0121650irq/29-eth0_g0_11:34:020
121490ksoftirqd/1121750irq/30-eth0_g0_09:26:051
121480ksoftirqd/1121650irq/29-eth0_g0_11:05:050
121372470sleep0121750irq/30-eth0_g0_11:18:550
121470ksoftirqd/1121750irq/30-eth0_g0_12:32:321
121470ksoftirqd/1121750irq/30-eth0_g0_11:21:301
121470ksoftirqd/1121750irq/30-eth0_g0_07:47:361
121470ksoftirqd/1121650irq/29-eth0_g0_11:38:271
121650460irq/29-eth0_g0_121ksoftirqd/111:57:450
121450ksoftirqd/1121650irq/29-eth0_g0_07:27:281
121750440irq/30-eth0_g0_11783-21diskmemload11:02:161
121440ksoftirqd/1121750irq/30-eth0_g0_09:29:061
121440ksoftirqd/1121650irq/29-eth0_g0_09:15:010
121750430irq/30-eth0_g0_31ksoftirqd/010:19:190
121750430irq/30-eth0_g0_1219-21kworker/1:212:16:351
121750430irq/30-eth0_g0_1219-21kworker/1:210:06:351
121750430irq/30-eth0_g0_1219-21kworker/1:210:06:351
121750430irq/30-eth0_g0_1219-21kworker/1:209:14:061
121430ksoftirqd/1121750irq/30-eth0_g0_11:09:440
121430ksoftirqd/1121650irq/29-eth0_g0_12:27:381
121430ksoftirqd/1121650irq/29-eth0_g0_10:38:020
121430ksoftirqd/1121650irq/29-eth0_g0_09:51:411
121430ksoftirqd/1121650irq/29-eth0_g0_09:20:501
121750420irq/30-eth0_g0_1219-21kworker/1:210:42:431
121650420irq/29-eth0_g0_31ksoftirqd/012:31:080
121650420irq/29-eth0_g0_24855-21vmstat09:57:470
121650420irq/29-eth0_g0_14805-21munin-run07:07:240
121650420irq/29-eth0_g0_13-21kworker/0:111:12:490
121650420irq/29-eth0_g0_13-21kworker/0:111:12:490
121420ksoftirqd/1121750irq/30-eth0_g0_07:31:450
121650410irq/29-eth0_g0_31ksoftirqd/012:04:110
121650410irq/29-eth0_g0_264272open_inodes12:17:420
121650410irq/29-eth0_g0_189262sleep009:34:580
121410ksoftirqd/1121650irq/29-eth0_g0_10:04:420
121410ksoftirqd/1121650irq/29-eth0_g0_10:04:420
1480899401cyclictest31519-21grep08:12:441
1480899401cyclictest12989-21proc_pri11:22:441
1480899401cyclictest0-21swapper/110:09:161
121750400irq/30-eth0_g0_1219-21kworker/1:212:02:101
121750400irq/30-eth0_g0_0-21swapper/110:29:191
121650400irq/29-eth0_g0_31ksoftirqd/009:52:390
121650400irq/29-eth0_g0_1964-21runrttasks07:17:010
121650400irq/29-eth0_g0_13-21kworker/0:109:39:250
121650400irq/29-eth0_g0_121ksoftirqd/112:10:550
121650400irq/29-eth0_g0_121ksoftirqd/111:30:570
121400ksoftirqd/1121750irq/30-eth0_g0_10:53:010
121400ksoftirqd/1121750irq/30-eth0_g0_10:33:580
121400ksoftirqd/1121650irq/29-eth0_g0_08:46:271
121750390irq/30-eth0_g0_1219-21kworker/1:209:55:101
121750390irq/30-eth0_g0_121ksoftirqd/112:09:291
121650390irq/29-eth0_g0_27429-21/usr/sbin/munin12:22:370
121650390irq/29-eth0_g0_1964-21runrttasks07:49:400
121650390irq/29-eth0_g0_1480799cyclictest11:52:380
121650390irq/29-eth0_g0_13-21kworker/0:112:12:390
121650390irq/29-eth0_g0_13-21kworker/0:111:22:410
121650390irq/29-eth0_g0_13-21kworker/0:110:23:180
121650390irq/29-eth0_g0_13-21kworker/0:109:30:490
121650390irq/29-eth0_g0_121ksoftirqd/111:51:511
121650390irq/29-eth0_g0_121ksoftirqd/111:45:190
121650390irq/29-eth0_g0_121ksoftirqd/110:51:201
121390ksoftirqd/1121750irq/30-eth0_g0_11:38:180
121390ksoftirqd/1121750irq/30-eth0_g0_11:00:150
121390ksoftirqd/1121750irq/30-eth0_g0_10:48:550
121390ksoftirqd/1121750irq/30-eth0_g0_10:29:250
121390ksoftirqd/1121750irq/30-eth0_g0_09:03:130
121390ksoftirqd/1121750irq/30-eth0_g0_08:26:150
121390ksoftirqd/1121750irq/30-eth0_g0_08:26:150
121390ksoftirqd/1121750irq/30-eth0_g0_07:24:310
1480899381cyclictest8094-21proc_pri11:02:431
1480899381cyclictest17893-21awk07:17:431
1480899381cyclictest10308-21taskset11:12:401
1480899381cyclictest10308-21taskset11:12:401
1480899381cyclictest0-21swapper/108:32:451
121750380irq/30-eth0_g0_13962-21cat07:02:391
121750380irq/30-eth0_g0_1219-21kworker/1:210:24:391
121750380irq/30-eth0_g0_1219-21kworker/1:210:19:401
121750380irq/30-eth0_g0_1219-21kworker/1:209:44:581
121750380irq/30-eth0_g0_121ksoftirqd/112:24:591
121750380irq/30-eth0_g0_121ksoftirqd/112:17:381
121750380irq/30-eth0_g0_0-21swapper/110:40:281
121650380irq/29-eth0_g0_31ksoftirqd/009:45:470
121650380irq/29-eth0_g0_13-21kworker/0:112:32:410
121650380irq/29-eth0_g0_0-21swapper/008:27:450
121380ksoftirqd/1121750irq/30-eth0_g0_09:27:200
121380ksoftirqd/1121650irq/29-eth0_g0_07:54:261
1480899378cyclictest121750irq/30-eth0_g0_10:00:471
1480899372cyclictest19193-21grep07:22:451
1480899371cyclictest19784-21taskset09:37:461
1480899371cyclictest15588-21grep07:07:461
121750370irq/30-eth0_g0_31ksoftirqd/007:42:480
121750370irq/30-eth0_g0_1219-21kworker/1:211:29:161
121750370irq/30-eth0_g0_1219-21kworker/1:210:36:001
121750370irq/30-eth0_g0_0-21swapper/109:35:421
121650370irq/29-eth0_g0_22246-21/usr/sbin/munin07:37:350
121650370irq/29-eth0_g0_22246-21/usr/sbin/munin07:37:350
121650370irq/29-eth0_g0_13-21kworker/0:110:09:200
121650370irq/29-eth0_g0_13-21kworker/0:109:10:320
121650370irq/29-eth0_g0_0-21swapper/008:47:410
121650370irq/29-eth0_g0_0-21swapper/008:47:410
1480899362cyclictest12155-21cat09:07:401
1480899361cyclictest29059-21head08:02:461
1480899361cyclictest24033-21sendmail_mailtr07:42:471
1480899361cyclictest2109-21lldpd08:07:391
121650360irq/29-eth0_g0_4797-21ls08:37:400
121650360irq/29-eth0_g0_1964-21runrttasks08:09:170
121650360irq/29-eth0_g0_1964-21runrttasks07:07:250
121650360irq/29-eth0_g0_121ksoftirqd/111:57:201
121650360irq/29-eth0_g0_0-21swapper/007:32:420
121360ksoftirqd/1121750irq/30-eth0_g0_08:01:290
121650350irq/29-eth0_g0_8593-21grep08:52:420
121650350irq/29-eth0_g0_6334-21wc08:42:480
121650350irq/29-eth0_g0_3967-21unixbench_multi08:32:450
121650350irq/29-eth0_g0_1964-21runrttasks08:19:150
121650350irq/29-eth0_g0_1964-21runrttasks08:03:040
121650350irq/29-eth0_g0_18025-21grep07:17:450
121650350irq/29-eth0_g0_121ksoftirqd/111:34:131
1480899342cyclictest45282sleep108:37:361
1480899341cyclictest9593-21taskset08:57:391
1480899341cyclictest32599-21sendmail_mailtr08:17:441
1480899341cyclictest1540-21unixbench_singl08:22:461
1480899341cyclictest1540-21unixbench_singl08:22:461
121750340irq/30-eth0_g0_27070-21latency_hist07:57:240
121650340irq/29-eth0_g0_9818-21ntp_offset08:57:440
121650340irq/29-eth0_g0_9260-21runrttasks08:56:381
275332330sleep10-21swapper/107:57:411
1480899331cyclictest22778-21find07:37:431
1480899331cyclictest22778-21find07:37:431
1480899331cyclictest0-21swapper/108:27:351
1480899321cyclictest0-21swapper/107:13:461
121650320irq/29-eth0_g0_2109-21lldpd08:12:400
121650310irq/29-eth0_g0_11716-21runrttasks09:06:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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