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2026-05-07 - 08:00

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Thu May 07, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211270ksoftirqd/1121550irq/30-eth0_g0_22:52:271
2396321180sleep0121550irq/30-eth0_g0_00:09:060
1597821160chrt121450irq/29-eth0_g0_22:49:180
215282740sleep0121550irq/30-eth0_g0_23:44:190
215282740sleep0121550irq/30-eth0_g0_23:44:190
168742720sleep0121550irq/30-eth0_g0_22:58:530
121710ksoftirqd/1121550irq/30-eth0_g0_19:32:211
121660ksoftirqd/1121550irq/30-eth0_g0_21:26:170
155362630sleep1121550irq/30-eth0_g0_22:45:031
257522610sleep0121550irq/30-eth0_g0_00:26:230
215682560sleep1121450irq/29-eth0_g0_23:44:481
215682560sleep1121450irq/29-eth0_g0_23:44:481
121520ksoftirqd/1121550irq/30-eth0_g0_23:03:141
121520ksoftirqd/1121550irq/30-eth0_g0_21:22:061
121480ksoftirqd/1121550irq/30-eth0_g0_23:06:491
121480ksoftirqd/1121550irq/30-eth0_g0_21:16:441
121480ksoftirqd/1121450irq/29-eth0_g0_22:27:281
121480ksoftirqd/1121450irq/29-eth0_g0_22:27:281
121470ksoftirqd/1121550irq/30-eth0_g0_22:42:341
121460ksoftirqd/1121550irq/30-eth0_g0_23:52:061
121460ksoftirqd/1121550irq/30-eth0_g0_23:24:531
121460ksoftirqd/1121550irq/30-eth0_g0_21:31:381
121450450irq/29-eth0_g0_1911-21runrttasks22:40:230
121450ksoftirqd/1121550irq/30-eth0_g0_00:12:181
121450ksoftirqd/1121450irq/29-eth0_g0_23:55:580
121450ksoftirqd/1121450irq/29-eth0_g0_23:13:050
121440ksoftirqd/1121550irq/30-eth0_g0_22:09:110
121440ksoftirqd/1121550irq/30-eth0_g0_22:09:110
200882430sleep1121450irq/29-eth0_g0_23:30:071
121430ksoftirqd/1121450irq/29-eth0_g0_23:43:281
121430ksoftirqd/1121450irq/29-eth0_g0_22:06:501
121430ksoftirqd/1121450irq/29-eth0_g0_22:06:501
121430ksoftirqd/1121450irq/29-eth0_g0_00:15:060
121550420irq/30-eth0_g0_1221-21kworker/1:222:09:291
121550420irq/30-eth0_g0_1221-21kworker/1:200:36:111
121550420irq/30-eth0_g0_1221-21kworker/1:200:26:221
121550420irq/30-eth0_g0_1221-21kworker/1:200:05:421
121450410irq/29-eth0_g0_1911-21runrttasks19:06:260
121450410irq/29-eth0_g0_14150-21taskset22:31:360
121410ksoftirqd/1121450irq/29-eth0_g0_23:21:211
121550400irq/30-eth0_g0_1221-21kworker/1:221:13:091
121450400irq/29-eth0_g0_1911-21runrttasks21:10:290
121450400irq/29-eth0_g0_1911-21runrttasks19:43:320
121450400irq/29-eth0_g0_1911-21runrttasks19:43:320
121400ksoftirqd/1121450irq/29-eth0_g0_20:22:391
121550390irq/30-eth0_g0_1221-21kworker/1:221:59:541
121550390irq/30-eth0_g0_1221-21kworker/1:221:51:071
121550390irq/30-eth0_g0_1221-21kworker/1:221:27:181
121550390irq/30-eth0_g0_121ksoftirqd/122:57:361
121450390irq/29-eth0_g0_31ksoftirqd/021:23:390
121450390irq/29-eth0_g0_19895-21runrttasks23:28:470
121450390irq/29-eth0_g0_1911-21runrttasks20:46:360
121390ksoftirqd/1121550irq/30-eth0_g0_21:40:000
121390ksoftirqd/1121450irq/29-eth0_g0_23:32:200
121550380irq/30-eth0_g0_13362-21munin-run22:24:121
121550380irq/30-eth0_g0_1221-21kworker/1:223:13:481
121550380irq/30-eth0_g0_1221-21kworker/1:222:17:471
121550380irq/30-eth0_g0_1221-21kworker/1:200:29:401
121450380irq/29-eth0_g0_31ksoftirqd/023:39:120
121450380irq/29-eth0_g0_31ksoftirqd/021:36:450
121380ksoftirqd/1121450irq/29-eth0_g0_21:53:440
121380ksoftirqd/1121450irq/29-eth0_g0_21:48:371
2603599371cyclictest5844-21cat21:09:121
2603599371cyclictest23374-21runrttasks00:03:101
121550370irq/30-eth0_g0_1221-21kworker/1:221:34:221
121550370irq/30-eth0_g0_1221-21kworker/1:200:21:291
121550370irq/30-eth0_g0_121ksoftirqd/121:55:011
121550370irq/30-eth0_g0_0-21swapper/123:54:421
121450370irq/29-eth0_g0_6828-21latency_hist21:19:120
121450370irq/29-eth0_g0_31ksoftirqd/023:06:500
121450370irq/29-eth0_g0_31ksoftirqd/021:56:560
121450370irq/29-eth0_g0_1911-21runrttasks19:59:030
121450370irq/29-eth0_g0_13-21kworker/0:122:34:140
121450370irq/29-eth0_g0_13-21kworker/0:122:34:140
121450370irq/29-eth0_g0_121ksoftirqd/122:46:450
121370ksoftirqd/1121550irq/30-eth0_g0_22:01:270
121370ksoftirqd/1121450irq/29-eth0_g0_19:25:071
2603599361cyclictest5785-21diskmemload23:36:021
2603599361cyclictest3209-21taskset20:43:471
2603599361cyclictest316042sleep120:04:121
2603599361cyclictest0-21swapper/120:47:231
121550360irq/30-eth0_g0_1221-21kworker/1:222:33:261
121550360irq/30-eth0_g0_1221-21kworker/1:221:43:041
121550360irq/30-eth0_g0_0-21swapper/119:50:001
121450360irq/29-eth0_g0_5785-21diskmemload23:41:510
121450360irq/29-eth0_g0_1911-21runrttasks21:06:220
121450360irq/29-eth0_g0_1911-21runrttasks20:21:380
121450360irq/29-eth0_g0_1911-21runrttasks19:14:540
121450360irq/29-eth0_g0_1911-21runrttasks00:35:370
121450360irq/29-eth0_g0_13-21kworker/0:121:29:240
121450360irq/29-eth0_g0_121ksoftirqd/119:09:121
121360ksoftirqd/14163-21taskset20:53:051
121360ksoftirqd/14163-21taskset20:53:051
121360ksoftirqd/1121550irq/30-eth0_g0_22:12:490
2603599351cyclictest27531-21sshd19:23:591
2603599351cyclictest0-21swapper/120:04:491
121550350irq/30-eth0_g0_1911-21runrttasks20:01:120
121550350irq/30-eth0_g0_1221-21kworker/1:223:15:221
121450350irq/29-eth0_g0_1911-21runrttasks23:50:260
121450350irq/29-eth0_g0_1911-21runrttasks21:04:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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