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2026-04-30 - 20:07

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 highest latencies:
System rack3slot5s.osadl.org (updated Thu Apr 30, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1150621500sleep1121450irq/29-eth0_g0_12:13:371
927221340sleep1121450irq/29-eth0_g0_11:51:071
124622690chrt121550irq/30-eth0_g0_12:22:580
124622690chrt121550irq/30-eth0_g0_12:22:580
135002650sleep0121450irq/29-eth0_g0_12:33:140
285402610sleep0121550irq/30-eth0_g0_09:40:590
67962580sleep0121450irq/29-eth0_g0_11:26:360
121540ksoftirqd/1121550irq/30-eth0_g0_11:30:321
305682530sleep1121450irq/29-eth0_g0_10:01:071
132712500sleep1121450irq/29-eth0_g0_12:30:331
121480ksoftirqd/1121550irq/30-eth0_g0_12:17:491
121480ksoftirqd/1121550irq/30-eth0_g0_11:06:391
121480ksoftirqd/1121550irq/30-eth0_g0_10:52:021
121470ksoftirqd/1121550irq/30-eth0_g0_09:28:571
121470ksoftirqd/1121450irq/29-eth0_g0_12:25:180
302032460sleep0121550irq/30-eth0_g0_09:57:460
121550460irq/30-eth0_g0_121ksoftirqd/112:39:271
121460ksoftirqd/1121550irq/30-eth0_g0_11:21:451
121460ksoftirqd/1121450irq/29-eth0_g0_10:06:390
121450ksoftirqd/1121550irq/30-eth0_g0_10:32:121
57242440sleep0121450irq/29-eth0_g0_11:15:550
121550440irq/30-eth0_g0_1221-21kworker/1:211:24:351
121450440irq/29-eth0_g0_121ksoftirqd/109:12:521
121550430irq/30-eth0_g0_1221-21kworker/1:209:42:561
121450430irq/29-eth0_g0_1911-21runrttasks10:51:430
121430ksoftirqd/1121550irq/30-eth0_g0_09:19:321
121550420irq/30-eth0_g0_1221-21kworker/1:212:20:451
121550420irq/30-eth0_g0_1221-21kworker/1:212:20:451
121550420irq/30-eth0_g0_1221-21kworker/1:211:56:411
121550420irq/30-eth0_g0_1221-21kworker/1:211:48:121
121450420irq/29-eth0_g0_31ksoftirqd/009:15:140
121450420irq/29-eth0_g0_1911-21runrttasks09:12:490
121420ksoftirqd/1121450irq/29-eth0_g0_12:25:571
121550410irq/30-eth0_g0_1221-21kworker/1:210:48:091
121550410irq/30-eth0_g0_1221-21kworker/1:209:57:071
121450410irq/29-eth0_g0_9114-21latency_hist11:49:280
121450410irq/29-eth0_g0_31ksoftirqd/011:20:310
121450410irq/29-eth0_g0_13-21kworker/0:110:17:020
121410ksoftirqd/1121450irq/29-eth0_g0_12:04:041
121410ksoftirqd/1121450irq/29-eth0_g0_10:43:470
121550400irq/30-eth0_g0_1221-21kworker/1:210:43:041
121550400irq/30-eth0_g0_1221-21kworker/1:210:39:271
121550400irq/30-eth0_g0_1221-21kworker/1:210:07:041
121450400irq/29-eth0_g0_31ksoftirqd/009:27:120
121450400irq/29-eth0_g0_13-21kworker/0:111:31:480
121450400irq/29-eth0_g0_13-21kworker/0:109:59:550
121450400irq/29-eth0_g0_13-21kworker/0:109:54:020
121450400irq/29-eth0_g0_121ksoftirqd/110:59:520
121450400irq/29-eth0_g0_0-21swapper/010:23:120
121550390irq/30-eth0_g0_1221-21kworker/1:209:30:541
121550390irq/30-eth0_g0_1221-21kworker/1:209:30:541
121550390irq/30-eth0_g0_121ksoftirqd/112:08:321
121550390irq/30-eth0_g0_121ksoftirqd/111:18:491
121450390irq/29-eth0_g0_31ksoftirqd/011:42:200
121450390irq/29-eth0_g0_31ksoftirqd/010:36:300
121450390irq/29-eth0_g0_31ksoftirqd/009:19:500
121450390irq/29-eth0_g0_13-21kworker/0:111:08:540
121450390irq/29-eth0_g0_13-21kworker/0:109:48:360
121450390irq/29-eth0_g0_13-21kworker/0:109:29:470
121450390irq/29-eth0_g0_13-21kworker/0:109:29:470
121450390irq/29-eth0_g0_121ksoftirqd/111:53:100
121450390irq/29-eth0_g0_121ksoftirqd/110:58:120
121390ksoftirqd/1121450irq/29-eth0_g0_08:59:541
13214993825cyclictest1911-21runrttasks07:46:201
1321499382cyclictest1911-21runrttasks08:02:461
1321499381cyclictest21313-21cat08:29:271
121550380irq/30-eth0_g0_1221-21kworker/1:211:00:271
121550380irq/30-eth0_g0_1221-21kworker/1:210:26:201
121550380irq/30-eth0_g0_1221-21kworker/1:210:26:201
121550380irq/30-eth0_g0_1221-21kworker/1:209:49:551
121550380irq/30-eth0_g0_121ksoftirqd/111:40:161
121550380irq/30-eth0_g0_0-21swapper/110:16:311
121550380irq/30-eth0_g0_0-21swapper/109:39:181
121450380irq/29-eth0_g0_21814-21date08:34:270
121450380irq/29-eth0_g0_21814-21date08:34:270
121450380irq/29-eth0_g0_1911-21runrttasks10:45:030
121450380irq/29-eth0_g0_13-21kworker/0:111:13:140
121450380irq/29-eth0_g0_13-21kworker/0:109:35:260
121450380irq/29-eth0_g0_121ksoftirqd/111:36:031
121380ksoftirqd/1121450irq/29-eth0_g0_07:28:041
1321499372cyclictest20297-21taskset08:19:271
12282370sleep0121450irq/29-eth0_g0_10:31:500
121550370irq/30-eth0_g0_1911-21runrttasks07:08:351
121550370irq/30-eth0_g0_121ksoftirqd/110:22:021
121450370irq/29-eth0_g0_13-21kworker/0:112:35:250
121450370irq/29-eth0_g0_13-21kworker/0:112:14:330
121450370irq/29-eth0_g0_13-21kworker/0:112:07:140
121450370irq/29-eth0_g0_13-21kworker/0:110:10:210
121370ksoftirqd/1121550irq/30-eth0_g0_10:58:491
1321499361cyclictest22803-21cat08:44:271
1321499361cyclictest20808-21cat08:24:271
1321499361cyclictest1911-21runrttasks07:37:191
1321499361cyclictest1911-21runrttasks07:12:341
1321499361cyclictest0-21swapper/108:11:471
1321499361cyclictest0-21swapper/107:44:271
121550360irq/30-eth0_g0_13-21kworker/0:111:34:550
121550360irq/30-eth0_g0_1221-21kworker/1:209:16:471
121550360irq/30-eth0_g0_121ksoftirqd/109:48:351
121450360irq/29-eth0_g0_23663-21seq08:53:050
121450360irq/29-eth0_g0_1911-21runrttasks07:19:401
121450360irq/29-eth0_g0_13-21kworker/0:112:01:360
121450360irq/29-eth0_g0_13-21kworker/0:111:55:430
121450360irq/29-eth0_g0_0-21swapper/007:05:440
121360ksoftirqd/1121550irq/30-eth0_g0_12:09:280
121360ksoftirqd/1121550irq/30-eth0_g0_10:13:451
121360ksoftirqd/1121450irq/29-eth0_g0_08:09:271
1321499351cyclictest1911-21runrttasks07:56:221
1321499351cyclictest1911-21runrttasks07:56:221
1321499351cyclictest1911-21runrttasks07:15:281
1321499351cyclictest1911-21runrttasks07:15:281
121550350irq/30-eth0_g0_0-21swapper/111:14:191
121450350irq/29-eth0_g0_31ksoftirqd/007:15:560
121450350irq/29-eth0_g0_31ksoftirqd/007:15:560
121450350irq/29-eth0_g0_24852-21cat09:04:270
121450350irq/29-eth0_g0_1911-21runrttasks09:07:300
121450350irq/29-eth0_g0_16241-21latency_hist07:39:270
121450350irq/29-eth0_g0_13-21kworker/0:110:28:240
121450350irq/29-eth0_g0_13-21kworker/0:110:28:240
121550340irq/30-eth0_g0_1972-21lldpd08:34:321
121550340irq/30-eth0_g0_1972-21lldpd08:34:321
121450340irq/29-eth0_g0_19529-21runrttasks08:11:560
121450340irq/29-eth0_g0_1911-21runrttasks08:55:060
121450340irq/29-eth0_g0_1911-21runrttasks08:24:200
121450340irq/29-eth0_g0_17876-21runrttasks07:55:140
121450340irq/29-eth0_g0_17876-21runrttasks07:55:140
1321499332cyclictest1911-21runrttasks07:29:371
1321499331cyclictest0-21swapper/108:55:531
1321499331cyclictest0-21swapper/108:46:491
1321499331cyclictest0-21swapper/107:53:031
121450330irq/29-eth0_g0_1911-21runrttasks08:36:240
121450330irq/29-eth0_g0_1911-21runrttasks08:36:240
121450330irq/29-eth0_g0_1911-21runrttasks08:29:150
121450330irq/29-eth0_g0_0-21swapper/007:33:090
121330ksoftirqd/1121450irq/29-eth0_g0_08:34:241
121330ksoftirqd/1121450irq/29-eth0_g0_08:34:241
121450320irq/29-eth0_g0_24887-21runrttasks09:04:371
121450320irq/29-eth0_g0_1972-21lldpd07:28:260
121450320irq/29-eth0_g0_1911-21runrttasks08:44:100
121450320irq/29-eth0_g0_18829-21runrttasks08:04:320
121450320irq/29-eth0_g0_14444-21sshd07:21:100
121450320irq/29-eth0_g0_1321499cyclictest08:54:271
121450320irq/29-eth0_g0_0-21swapper/007:49:000
121550310irq/30-eth0_g0_1911-21runrttasks08:46:250
121450310irq/29-eth0_g0_0-21swapper/008:00:550
121450310irq/29-eth0_g0_0-21swapper/007:40:400
121450300irq/29-eth0_g0_17463-21runrttasks07:51:180
121450300irq/29-eth0_g0_0-21swapper/008:14:550
121450300irq/29-eth0_g0_0-21swapper/007:13:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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