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2026-04-08 - 03:27

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 Wed Apr 08, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123792910sleep13129650irq/29-eth0_g0_22:31:341
121870ksoftirqd/13129650irq/29-eth0_g0_23:56:180
121860ksoftirqd/13129650irq/29-eth0_g0_22:04:480
189912720chrt3129750irq/30-eth0_g0_22:59:401
189912720chrt3129750irq/30-eth0_g0_22:59:401
222762550chrt3129750irq/30-eth0_g0_23:12:570
3129650520irq/29-eth0_g0_13-21kworker/0:122:54:490
121490ksoftirqd/13129750irq/30-eth0_g0_22:03:571
82802460sleep13129650irq/29-eth0_g0_00:28:431
3129750450irq/30-eth0_g0_31295-21kworker/1:123:59:491
3129750450irq/30-eth0_g0_31ksoftirqd/022:25:390
121450ksoftirqd/13129750irq/30-eth0_g0_22:19:141
121450ksoftirqd/13129750irq/30-eth0_g0_21:14:291
121450ksoftirqd/13129650irq/29-eth0_g0_21:46:480
3129750440irq/30-eth0_g0_31295-21kworker/1:123:40:371
3129650440irq/29-eth0_g0_0-21swapper/019:24:420
300732440sleep13129750irq/30-eth0_g0_21:31:051
77402430sleep03129650irq/29-eth0_g0_00:24:480
3129650430irq/29-eth0_g0_5424-21unixbench_multi00:14:480
3129650430irq/29-eth0_g0_26462-21cat19:04:420
3129650430irq/29-eth0_g0_1875-21runrttasks21:24:420
3129650430irq/29-eth0_g0_121ksoftirqd/100:19:410
121430ksoftirqd/13129750irq/30-eth0_g0_00:32:171
121430ksoftirqd/13129650irq/29-eth0_g0_23:18:480
3129750420irq/30-eth0_g0_31295-21kworker/1:122:39:541
3129750420irq/30-eth0_g0_31295-21kworker/1:121:27:301
3129650420irq/29-eth0_g0_31ksoftirqd/022:43:380
3129650420irq/29-eth0_g0_24235-21diskmemload22:14:410
3129650420irq/29-eth0_g0_121ksoftirqd/122:23:270
3129650420irq/29-eth0_g0_121ksoftirqd/121:29:480
3129650420irq/29-eth0_g0_121ksoftirqd/100:19:401
3129750410irq/30-eth0_g0_31295-21kworker/1:123:51:401
3129750410irq/30-eth0_g0_31295-21kworker/1:122:47:551
3129750410irq/30-eth0_g0_31295-21kworker/1:121:37:571
3129650410irq/29-eth0_g0_13-21kworker/0:123:27:380
3129650410irq/29-eth0_g0_13-21kworker/0:122:01:290
3129750400irq/30-eth0_g0_31295-21kworker/1:122:59:211
3129750400irq/30-eth0_g0_10959-21grep22:24:511
3129650400irq/29-eth0_g0_13-21kworker/0:123:00:550
3129650400irq/29-eth0_g0_13-21kworker/0:123:00:550
3129650400irq/29-eth0_g0_13-21kworker/0:122:51:230
3129650400irq/29-eth0_g0_13-21kworker/0:122:31:050
3129650400irq/29-eth0_g0_12802-21df_abs22:34:390
3129650400irq/29-eth0_g0_12802-21df_abs22:34:390
3129650400irq/29-eth0_g0_121ksoftirqd/122:46:080
3129650400irq/29-eth0_g0_121ksoftirqd/122:35:561
3129650400irq/29-eth0_g0_121ksoftirqd/122:35:561
2734499401cyclictest2760-21proc_pri00:04:471
121400ksoftirqd/13129750irq/30-eth0_g0_23:33:040
121400ksoftirqd/13129750irq/30-eth0_g0_21:04:491
121400ksoftirqd/13129650irq/29-eth0_g0_23:09:451
121400ksoftirqd/13129650irq/29-eth0_g0_22:49:591
3129750390irq/30-eth0_g0_31295-21kworker/1:123:38:471
3129750390irq/30-eth0_g0_31295-21kworker/1:122:06:331
3129750390irq/30-eth0_g0_31295-21kworker/1:121:57:311
3129650390irq/29-eth0_g0_30179-21runrttasks23:44:430
3129650390irq/29-eth0_g0_27824-21ntp_offset19:09:460
3129650390irq/29-eth0_g0_13-21kworker/0:123:40:350
3129650390irq/29-eth0_g0_13-21kworker/0:121:51:410
3129650390irq/29-eth0_g0_13-21kworker/0:121:35:430
3129650390irq/29-eth0_g0_121ksoftirqd/123:52:440
3129650390irq/29-eth0_g0_1141-21cpu19:34:380
2734499396cyclictest3856-21wc19:44:431
2734499391cyclictest11294-21grep20:14:451
121390ksoftirqd/13129750irq/30-eth0_g0_23:34:590
121390ksoftirqd/13129750irq/30-eth0_g0_21:40:160
121390ksoftirqd/13129750irq/30-eth0_g0_20:42:560
121390ksoftirqd/13129750irq/30-eth0_g0_19:51:240
121390ksoftirqd/13129750irq/30-eth0_g0_19:40:270
121390ksoftirqd/13129650irq/29-eth0_g0_23:54:401
121390ksoftirqd/13129650irq/29-eth0_g0_20:59:081
121390ksoftirqd/13129650irq/29-eth0_g0_19:53:551
121390ksoftirqd/13129650irq/29-eth0_g0_19:43:211
3129750380irq/30-eth0_g0_31295-21kworker/1:100:39:271
3129750380irq/30-eth0_g0_121ksoftirqd/123:47:351
3129750380irq/30-eth0_g0_121ksoftirqd/121:43:201
3129750380irq/30-eth0_g0_121ksoftirqd/100:18:471
3129650380irq/29-eth0_g0_31ksoftirqd/021:16:440
3129650380irq/29-eth0_g0_27469-21unixbench_singl21:19:490
3129650380irq/29-eth0_g0_13-21kworker/0:123:05:480
3129650380irq/29-eth0_g0_13-21kworker/0:121:54:360
3129650380irq/29-eth0_g0_13-21kworker/0:121:12:220
3129650380irq/29-eth0_g0_13-21kworker/0:100:29:470
121380ksoftirqd/13129750irq/30-eth0_g0_20:49:570
121380ksoftirqd/13129750irq/30-eth0_g0_20:21:180
121380ksoftirqd/13129650irq/29-eth0_g0_23:24:181
121380ksoftirqd/13129650irq/29-eth0_g0_22:19:491
3129750370irq/30-eth0_g0_31295-21kworker/1:123:26:131
3129750370irq/30-eth0_g0_31295-21kworker/1:121:12:001
3129750370irq/30-eth0_g0_26256-21df19:04:391
3129750370irq/30-eth0_g0_121ksoftirqd/121:47:481
3129750370irq/30-eth0_g0_0-21swapper/121:23:111
3129650370irq/29-eth0_g0_8418-21cat20:04:290
3129650370irq/29-eth0_g0_6601-21/usr/sbin/munin22:09:410
3129650370irq/29-eth0_g0_4105-21mailstats19:44:480
3129650370irq/29-eth0_g0_3943-21ntp_states00:09:440
3129650370irq/29-eth0_g0_3943-21ntp_states00:09:440
3129650370irq/29-eth0_g0_29027-21ntp_kernel_err19:14:440
3129650370irq/29-eth0_g0_23692-21seq21:04:490
3129650370irq/29-eth0_g0_18542-21ls20:44:430
3129650370irq/29-eth0_g0_14556-21/usr/sbin/munin20:29:400
3129650370irq/29-eth0_g0_13-21kworker/0:100:35:220
3129650370irq/29-eth0_g0_13-21kworker/0:100:08:220
3129650370irq/29-eth0_g0_13-21kworker/0:100:01:490
3129650370irq/29-eth0_g0_121ksoftirqd/100:12:391
3129650370irq/29-eth0_g0_121ksoftirqd/100:12:391
3129650370irq/29-eth0_g0_0-21swapper/019:29:490
2734499371cyclictest291792sleep119:14:471
2734499371cyclictest283022sleep119:11:291
2734499371cyclictest18257-21cpu20:44:391
2734499371cyclictest0-21swapper/123:05:361
121370ksoftirqd/13129750irq/30-eth0_g0_23:19:560
121370ksoftirqd/13129650irq/29-eth0_g0_22:11:321
3129750360irq/30-eth0_g0_1875-21runrttasks20:42:221
3129650360irq/29-eth0_g0_8691-21latency20:04:420
3129650360irq/29-eth0_g0_8691-21latency20:04:420
3129650360irq/29-eth0_g0_6668-21unixbench_multi19:54:500
3129650360irq/29-eth0_g0_30241-21netstat19:19:440
3129650360irq/29-eth0_g0_30241-21netstat19:19:440
3129650360irq/29-eth0_g0_121ksoftirqd/121:50:111
3129650360irq/29-eth0_g0_10379-21unixbench_singl20:09:490
3129650360irq/29-eth0_g0_0-21swapper/020:24:510
2734499367cyclictest3129750irq/30-eth0_g0_23:14:471
2734499361cyclictest7891-21grep19:59:501
2734499361cyclictest1875-21runrttasks20:37:061
3129750350irq/30-eth0_g0_31338-21irqstats19:24:431
3129650350irq/29-eth0_g0_22265-21ntpdc20:59:440
3129650350irq/29-eth0_g0_16042-21cat20:34:420
2734499351cyclictest6687-21head19:54:501
2734499351cyclictest10298-21grep20:09:491
2734499351cyclictest0-21swapper/120:52:591
2734499351cyclictest0-21swapper/119:19:431
2734499351cyclictest0-21swapper/119:19:431
121350ksoftirqd/13129750irq/30-eth0_g0_23:29:481
121350ksoftirqd/13129650irq/29-eth0_g0_20:29:441
121350ksoftirqd/13129650irq/29-eth0_g0_19:36:401
3129750340irq/30-eth0_g0_32446-21df_abs19:29:401
3129650340irq/29-eth0_g0_21285-21unixbench_multi20:54:500
27344993419cyclictest21940-21/usr/sbin/munin20:59:381
2734499341cyclictest12229-21df_abs20:19:401
2734499332cyclictest1875-21runrttasks20:27:141
2734499331cyclictest9123-21head20:04:491
2734499331cyclictest9123-21head20:04:491
3129650320irq/29-eth0_g0_11288-21ntp_offset20:14:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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