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2026-05-08 - 18:48

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 Fri May 08, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158942770sleep0121550irq/30-eth0_g0_10:25:590
260882560sleep0121450irq/29-eth0_g0_12:06:450
249072520sleep1121550irq/30-eth0_g0_11:54:491
121450460irq/29-eth0_g0_121ksoftirqd/111:27:441
121460ksoftirqd/1121450irq/29-eth0_g0_11:37:080
121550450irq/30-eth0_g0_1221-21kworker/1:212:37:251
92152430sleep1121550irq/30-eth0_g0_09:19:481
166662430chrt121450irq/29-eth0_g0_10:34:070
121550430irq/30-eth0_g0_1221-21kworker/1:210:26:121
121550430irq/30-eth0_g0_1221-21kworker/1:209:46:231
121550420irq/30-eth0_g0_1221-21kworker/1:211:10:301
121550420irq/30-eth0_g0_1221-21kworker/1:210:09:021
121550420irq/30-eth0_g0_1221-21kworker/1:209:42:361
121450420irq/29-eth0_g0_1911-21runrttasks07:04:130
121450420irq/29-eth0_g0_13-21kworker/0:109:13:400
28337994129cyclictest0-21swapper/110:32:381
121550410irq/30-eth0_g0_1221-21kworker/1:212:13:591
121550410irq/30-eth0_g0_121ksoftirqd/107:14:101
121450410irq/29-eth0_g0_1911-21runrttasks08:12:320
121450410irq/29-eth0_g0_13-21kworker/0:112:10:450
121450410irq/29-eth0_g0_13-21kworker/0:110:21:430
121450410irq/29-eth0_g0_121ksoftirqd/107:44:091
28337994028cyclictest0-21swapper/110:09:491
28337994028cyclictest0-21swapper/109:54:511
28337994028cyclictest0-21swapper/109:32:121
28337994028cyclictest0-21swapper/109:32:121
200372400sleep1121550irq/30-eth0_g0_11:07:061
121550400irq/30-eth0_g0_0-21swapper/111:19:151
121450400irq/29-eth0_g0_31ksoftirqd/009:18:060
121450400irq/29-eth0_g0_13-21kworker/0:110:05:070
121400ksoftirqd/1121450irq/29-eth0_g0_09:06:051
121400ksoftirqd/1121450irq/29-eth0_g0_08:34:121
28337993927cyclictest0-21swapper/112:32:431
28337993927cyclictest0-21swapper/112:26:141
28337993927cyclictest0-21swapper/109:28:551
28337993927cyclictest0-21swapper/108:08:541
181552390sleep1121550irq/30-eth0_g0_10:48:461
121550390irq/30-eth0_g0_1221-21kworker/1:210:03:101
121550390irq/30-eth0_g0_121ksoftirqd/111:43:121
121550390irq/30-eth0_g0_121ksoftirqd/111:43:121
121550390irq/30-eth0_g0_121ksoftirqd/111:17:061
121550390irq/30-eth0_g0_121ksoftirqd/110:41:361
121550390irq/30-eth0_g0_121ksoftirqd/110:18:381
121550390irq/30-eth0_g0_121ksoftirqd/109:15:031
121450390irq/29-eth0_g0_31ksoftirqd/012:28:370
121450390irq/29-eth0_g0_23786-21taskset11:44:080
121450390irq/29-eth0_g0_23786-21taskset11:44:080
121450390irq/29-eth0_g0_18831-21seq10:54:480
121450390irq/29-eth0_g0_13-21kworker/0:112:22:380
121450390irq/29-eth0_g0_13-21kworker/0:112:22:380
121450390irq/29-eth0_g0_13-21kworker/0:111:29:150
121450390irq/29-eth0_g0_13-21kworker/0:111:21:500
121450390irq/29-eth0_g0_13-21kworker/0:110:35:140
121450390irq/29-eth0_g0_13-21kworker/0:109:41:460
121450390irq/29-eth0_g0_12002-21runrttasks09:47:470
121450390irq/29-eth0_g0_121ksoftirqd/108:49:091
121390ksoftirqd/1121550irq/30-eth0_g0_11:34:091
121390ksoftirqd/1121450irq/29-eth0_g0_11:54:140
121390ksoftirqd/1121450irq/29-eth0_g0_08:41:201
28337993827cyclictest272392sleep112:18:221
121550380irq/30-eth0_g0_13-21kworker/0:112:36:120
121550380irq/30-eth0_g0_1221-21kworker/1:212:01:091
121550380irq/30-eth0_g0_1221-21kworker/1:211:46:191
121550380irq/30-eth0_g0_1221-21kworker/1:211:03:051
121550380irq/30-eth0_g0_1221-21kworker/1:211:03:051
121550380irq/30-eth0_g0_1221-21kworker/1:209:13:361
121550380irq/30-eth0_g0_121ksoftirqd/111:50:511
121450380irq/29-eth0_g0_8123-21latency_hist09:09:090
121450380irq/29-eth0_g0_1911-21runrttasks08:53:520
121450380irq/29-eth0_g0_1911-21runrttasks07:46:520
121450380irq/29-eth0_g0_13-21kworker/0:112:29:400
121450380irq/29-eth0_g0_13-21kworker/0:111:14:330
121450380irq/29-eth0_g0_13-21kworker/0:111:11:000
121450380irq/29-eth0_g0_13-21kworker/0:110:46:350
121450380irq/29-eth0_g0_13-21kworker/0:110:40:370
121450380irq/29-eth0_g0_13-21kworker/0:109:51:400
121450380irq/29-eth0_g0_13-21kworker/0:109:35:510
121450380irq/29-eth0_g0_13-21kworker/0:109:35:510
121450380irq/29-eth0_g0_13-21kworker/0:109:30:070
121450380irq/29-eth0_g0_13-21kworker/0:109:30:070
121450380irq/29-eth0_g0_13-21kworker/0:109:26:100
121380ksoftirqd/127902-21taskset07:04:151
121380ksoftirqd/1121450irq/29-eth0_g0_09:01:541
121380ksoftirqd/1121450irq/29-eth0_g0_09:01:541
121380ksoftirqd/1121450irq/29-eth0_g0_08:00:371
121380ksoftirqd/1121450irq/29-eth0_g0_07:39:031
2833799378cyclictest121550irq/30-eth0_g0_12:23:011
2833799378cyclictest121550irq/30-eth0_g0_12:23:011
28337993726cyclictest0-21swapper/111:37:081
28337993726cyclictest0-21swapper/108:29:331
121550370irq/30-eth0_g0_1221-21kworker/1:210:56:121
121550370irq/30-eth0_g0_1221-21kworker/1:209:35:441
121550370irq/30-eth0_g0_1221-21kworker/1:209:35:441
121550370irq/30-eth0_g0_0-21swapper/110:38:261
121450370irq/29-eth0_g0_1911-21runrttasks12:16:480
121450370irq/29-eth0_g0_1911-21runrttasks09:21:260
121450370irq/29-eth0_g0_1911-21runrttasks07:30:400
121450370irq/29-eth0_g0_13-21kworker/0:111:52:530
121450370irq/29-eth0_g0_13-21kworker/0:111:48:280
121450370irq/29-eth0_g0_13-21kworker/0:111:28:020
121450370irq/29-eth0_g0_13-21kworker/0:111:07:200
121450370irq/29-eth0_g0_13-21kworker/0:111:02:320
121450370irq/29-eth0_g0_13-21kworker/0:111:02:320
121450370irq/29-eth0_g0_13-21kworker/0:110:11:520
121450370irq/29-eth0_g0_13-21kworker/0:109:54:580
121450370irq/29-eth0_g0_0-21swapper/010:49:140
121370ksoftirqd/1121450irq/29-eth0_g0_08:23:211
121370ksoftirqd/1121450irq/29-eth0_g0_07:49:061
121550360irq/30-eth0_g0_30856-21taskset07:34:091
121550360irq/30-eth0_g0_1221-21kworker/1:210:19:171
121450360irq/29-eth0_g0_1911-21runrttasks08:29:490
121450360irq/29-eth0_g0_1911-21runrttasks08:17:360
121450360irq/29-eth0_g0_1911-21runrttasks07:21:560
121450360irq/29-eth0_g0_13-21kworker/0:112:02:420
121450360irq/29-eth0_g0_13-21kworker/0:110:02:160
121450360irq/29-eth0_g0_121ksoftirqd/109:52:241
121360ksoftirqd/1121450irq/29-eth0_g0_07:53:281
28337993529cyclictest29365-21taskset07:19:091
121550350irq/30-eth0_g0_758-21seq07:57:081
121550350irq/30-eth0_g0_1221-21kworker/1:212:04:121
121450350irq/29-eth0_g0_7613-21cat09:04:090
121450350irq/29-eth0_g0_7613-21cat09:04:090
121450350irq/29-eth0_g0_1911-21runrttasks08:41:090
121450350irq/29-eth0_g0_1911-21runrttasks08:35:380
121450350irq/29-eth0_g0_1911-21runrttasks08:27:470
121450350irq/29-eth0_g0_1911-21runrttasks07:57:240
121450350irq/29-eth0_g0_13-21kworker/0:110:18:240
121450350irq/29-eth0_g0_1221-21kworker/1:210:52:021
121450340irq/29-eth0_g0_31357-21latency_hist07:39:090
121450340irq/29-eth0_g0_1911-21runrttasks08:05:460
121450340irq/29-eth0_g0_1911-21runrttasks07:16:360
121450340irq/29-eth0_g0_0-21swapper/008:24:090
121450340irq/29-eth0_g0_0-21swapper/007:11:470
121340ksoftirqd/1121450irq/29-eth0_g0_07:19:561
121550330irq/30-eth0_g0_4065-21grep08:29:091
121450330irq/29-eth0_g0_7057-21cat08:59:090
121450330irq/29-eth0_g0_1911-21runrttasks07:51:010
121450330irq/29-eth0_g0_1911-21runrttasks07:43:450
28337993221cyclictest0-21swapper/108:56:201
121550320irq/30-eth0_g0_6466-21taskset08:53:161
121450320irq/29-eth0_g0_1911-21runrttasks08:03:290
121450320irq/29-eth0_g0_1911-21runrttasks07:25:190
121320ksoftirqd/1121450irq/29-eth0_g0_08:13:321
121550310irq/30-eth0_g0_30220-21taskset07:27:381
121450300irq/29-eth0_g0_6036-21munin-run08:49:090
121450300irq/29-eth0_g0_2936-21runrttasks08:18:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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