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2026-05-17 - 06:38

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Sun May 17, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121920ksoftirqd/1121550irq/30-eth0_g0_22:57:401
254972870sleep0121450irq/29-eth0_g0_21:23:080
121860ksoftirqd/1121450irq/29-eth0_g0_21:53:260
121820ksoftirqd/1121550irq/30-eth0_g0_22:15:011
121810ksoftirqd/1121450irq/29-eth0_g0_00:09:490
90452720sleep1121550irq/30-eth0_g0_00:00:381
86122650sleep0121450irq/29-eth0_g0_23:56:300
121600ksoftirqd/182212sleep023:52:480
305372590sleep1121550irq/30-eth0_g0_22:12:591
305372590sleep1121550irq/30-eth0_g0_22:12:591
121540ksoftirqd/1121450irq/29-eth0_g0_22:53:360
121540ksoftirqd/1121450irq/29-eth0_g0_22:53:360
121530ksoftirqd/1121550irq/30-eth0_g0_23:15:021
121450ksoftirqd/1121550irq/30-eth0_g0_21:57:131
121450ksoftirqd/1121550irq/30-eth0_g0_21:22:021
121440ksoftirqd/1121550irq/30-eth0_g0_22:49:261
121440ksoftirqd/1121550irq/30-eth0_g0_22:49:261
121440ksoftirqd/1121450irq/29-eth0_g0_22:37:330
121440ksoftirqd/1121450irq/29-eth0_g0_21:26:590
121550430irq/30-eth0_g0_1221-21kworker/1:221:35:301
121430ksoftirqd/1121450irq/29-eth0_g0_22:45:371
121550420irq/30-eth0_g0_1221-21kworker/1:223:44:491
121550420irq/30-eth0_g0_1221-21kworker/1:200:18:411
121450420irq/29-eth0_g0_31ksoftirqd/022:58:500
121550410irq/30-eth0_g0_1221-21kworker/1:223:30:161
121550410irq/30-eth0_g0_1221-21kworker/1:200:20:361
121550410irq/30-eth0_g0_121ksoftirqd/122:34:031
121450410irq/29-eth0_g0_1911-21runrttasks19:07:470
121410ksoftirqd/1121550irq/30-eth0_g0_22:08:470
121410ksoftirqd/1121550irq/30-eth0_g0_22:08:470
121410ksoftirqd/1121450irq/29-eth0_g0_23:10:501
121410ksoftirqd/1121450irq/29-eth0_g0_23:10:501
121410ksoftirqd/1121450irq/29-eth0_g0_22:26:270
121550400irq/30-eth0_g0_31ksoftirqd/000:34:230
121550400irq/30-eth0_g0_0-21swapper/122:26:491
121450400irq/29-eth0_g0_13-21kworker/0:123:10:090
121450400irq/29-eth0_g0_13-21kworker/0:123:10:090
121450400irq/29-eth0_g0_13-21kworker/0:122:15:540
121450400irq/29-eth0_g0_13-21kworker/0:121:43:350
121450400irq/29-eth0_g0_13-21kworker/0:121:09:130
121400ksoftirqd/1121450irq/29-eth0_g0_22:00:131
121400ksoftirqd/111678-21runrttasks19:06:091
299232390sleep1121550irq/30-eth0_g0_22:06:431
299232390sleep1121550irq/30-eth0_g0_22:06:431
121550390irq/30-eth0_g0_1221-21kworker/1:223:35:431
121550390irq/30-eth0_g0_1221-21kworker/1:223:27:511
121550390irq/30-eth0_g0_1221-21kworker/1:223:20:181
121550390irq/30-eth0_g0_1221-21kworker/1:222:29:071
121550390irq/30-eth0_g0_0-21swapper/123:48:551
121450390irq/29-eth0_g0_19741-21sshd20:25:460
121450390irq/29-eth0_g0_13-21kworker/0:123:30:020
121450390irq/29-eth0_g0_13-21kworker/0:123:04:570
121450390irq/29-eth0_g0_13-21kworker/0:121:59:380
121450390irq/29-eth0_g0_13-21kworker/0:121:34:380
121450390irq/29-eth0_g0_13-21kworker/0:100:22:120
121450390irq/29-eth0_g0_13-21kworker/0:100:17:260
121450390irq/29-eth0_g0_13-21kworker/0:100:04:330
121390ksoftirqd/1121550irq/30-eth0_g0_23:48:110
121390ksoftirqd/1121550irq/30-eth0_g0_22:48:190
121390ksoftirqd/1121550irq/30-eth0_g0_19:35:340
121390ksoftirqd/1121550irq/30-eth0_g0_00:02:390
121390ksoftirqd/1121450irq/29-eth0_g0_21:51:101
121390ksoftirqd/1121450irq/29-eth0_g0_19:28:021
121550380irq/30-eth0_g0_1221-21kworker/1:223:55:521
121550380irq/30-eth0_g0_1221-21kworker/1:221:30:281
121550380irq/30-eth0_g0_1221-21kworker/1:221:12:101
121550380irq/30-eth0_g0_1221-21kworker/1:200:13:331
121450380irq/29-eth0_g0_31ksoftirqd/022:39:560
121450380irq/29-eth0_g0_31ksoftirqd/000:32:500
121450380irq/29-eth0_g0_1911-21runrttasks22:12:580
121450380irq/29-eth0_g0_1911-21runrttasks22:12:580
121450380irq/29-eth0_g0_1911-21runrttasks20:39:070
121450380irq/29-eth0_g0_13-21kworker/0:123:01:320
121450380irq/29-eth0_g0_13-21kworker/0:122:22:450
121450380irq/29-eth0_g0_13-21kworker/0:121:57:220
121450380irq/29-eth0_g0_13-21kworker/0:121:46:030
121450380irq/29-eth0_g0_121ksoftirqd/122:28:530
121380ksoftirqd/1121450irq/29-eth0_g0_20:30:321
121380ksoftirqd/1121450irq/29-eth0_g0_00:29:061
11920993833cyclictest3551-21sshd23:06:291
275422370sleep1121550irq/30-eth0_g0_21:43:261
121550370irq/30-eth0_g0_1221-21kworker/1:223:00:451
121550370irq/30-eth0_g0_1221-21kworker/1:221:47:101
121550370irq/30-eth0_g0_1221-21kworker/1:200:35:581
121550370irq/30-eth0_g0_11513-21chrt00:24:561
121450370irq/29-eth0_g0_1911-21runrttasks19:54:140
121450370irq/29-eth0_g0_13-21kworker/0:123:35:470
121450370irq/29-eth0_g0_13-21kworker/0:123:25:050
121450370irq/29-eth0_g0_13-21kworker/0:123:22:270
121450370irq/29-eth0_g0_13-21kworker/0:121:31:210
121370ksoftirqd/1121450irq/29-eth0_g0_23:39:341
1192099371cyclictest24037-21diskmemload22:43:491
1192099371cyclictest0-21swapper/121:18:331
121450360irq/29-eth0_g0_13-21kworker/0:123:39:310
121450360irq/29-eth0_g0_13-21kworker/0:123:15:200
121450360irq/29-eth0_g0_13-21kworker/0:121:16:270
121450360irq/29-eth0_g0_13-21kworker/0:100:25:500
121450360irq/29-eth0_g0_1221-21kworker/1:221:26:491
121450360irq/29-eth0_g0_0-21swapper/021:03:490
121450360irq/29-eth0_g0_0-21swapper/019:33:490
121360ksoftirqd/1121450irq/29-eth0_g0_20:04:461
1192099361cyclictest15700-21sshd19:45:461
1192099361cyclictest0-21swapper/120:00:011
121550350irq/30-eth0_g0_1221-21kworker/1:200:04:461
121550350irq/30-eth0_g0_121ksoftirqd/122:22:321
121450350irq/29-eth0_g0_1911-21runrttasks20:57:130
121450350irq/29-eth0_g0_1911-21runrttasks20:31:000
121450350irq/29-eth0_g0_1911-21runrttasks20:09:010
121450350irq/29-eth0_g0_1911-21runrttasks20:01:340
1192099351cyclictest1966-21snmpd19:29:491
1192099351cyclictest0-21swapper/119:38:301
121450340irq/29-eth0_g0_1911-21runrttasks20:48:170
121450340irq/29-eth0_g0_1911-21runrttasks20:36:410
121450340irq/29-eth0_g0_1911-21runrttasks20:22:380
121450340irq/29-eth0_g0_1911-21runrttasks19:52:080
121450340irq/29-eth0_g0_1911-21runrttasks19:44:530
1192099341cyclictest0-21swapper/121:01:201
1192099341cyclictest0-21swapper/120:37:541
1192099341cyclictest0-21swapper/119:21:521
121450330irq/29-eth0_g0_1911-21runrttasks21:08:210
121450330irq/29-eth0_g0_1911-21runrttasks20:52:560
121450330irq/29-eth0_g0_1911-21runrttasks20:08:280
121450330irq/29-eth0_g0_1911-21runrttasks19:38:500
121450330irq/29-eth0_g0_1911-21runrttasks19:16:390
121450330irq/29-eth0_g0_1911-21runrttasks19:12:060
1192099331cyclictest19741-21sshd20:25:461
1192099331cyclictest0-21swapper/120:40:051
121320ksoftirqd/112601-21taskset19:15:011
1192099321cyclictest0-21swapper/120:12:511
1192099321cyclictest0-21swapper/119:11:251
121550310irq/30-eth0_g0_0-21swapper/121:04:321
121450310irq/29-eth0_g0_0-21swapper/020:14:570
121450310irq/29-eth0_g0_0-21swapper/019:19:240
121310ksoftirqd/118601-21taskset20:14:151
1192099311cyclictest0-21swapper/120:51:221
1192099311cyclictest0-21swapper/119:58:031
121550300irq/30-eth0_g0_0-21swapper/119:39:071
121450300irq/29-eth0_g0_19112-21runrttasks20:19:191
121450300irq/29-eth0_g0_0-21swapper/019:25:180
1192099301cyclictest0-21swapper/120:56:161
1192099301cyclictest0-21swapper/120:45:051
121290ksoftirqd/116190-21taskset19:50:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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