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2026-04-28 - 23:40

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 Tue Apr 28, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174582900sleep0121450irq/29-eth0_g0_12:11:340
325042480sleep1121450irq/29-eth0_g0_09:20:361
121550470irq/30-eth0_g0_27814-21latency_hist08:34:331
121550460irq/30-eth0_g0_1221-21kworker/1:212:34:281
121460ksoftirqd/1121450irq/29-eth0_g0_11:44:051
121460ksoftirqd/1121450irq/29-eth0_g0_10:38:261
121550450irq/30-eth0_g0_1221-21kworker/1:209:18:481
121450ksoftirqd/1121550irq/30-eth0_g0_10:29:380
31262440sleep0121450irq/29-eth0_g0_09:50:270
121550440irq/30-eth0_g0_1221-21kworker/1:212:19:581
121550440irq/30-eth0_g0_1221-21kworker/1:212:19:581
121450440irq/29-eth0_g0_13-21kworker/0:111:20:030
121550430irq/30-eth0_g0_1221-21kworker/1:211:03:081
121450430irq/29-eth0_g0_47412sleep110:06:311
121450430irq/29-eth0_g0_31ksoftirqd/009:47:210
121450430irq/29-eth0_g0_27786-21latency_hist08:34:320
121450430irq/29-eth0_g0_13-21kworker/0:111:04:420
95232420sleep0121450irq/29-eth0_g0_10:53:570
19109994237cyclictest25223-21latency_hist08:09:321
121450420irq/29-eth0_g0_5002-21munin-run10:09:310
121550410irq/30-eth0_g0_1221-21kworker/1:212:29:161
121550400irq/30-eth0_g0_1221-21kworker/1:211:47:381
121550400irq/30-eth0_g0_1221-21kworker/1:211:14:401
121550400irq/30-eth0_g0_1221-21kworker/1:210:19:351
121550400irq/30-eth0_g0_1221-21kworker/1:210:18:301
121550400irq/30-eth0_g0_1221-21kworker/1:209:52:401
121550400irq/30-eth0_g0_121ksoftirqd/111:38:131
121450400irq/29-eth0_g0_31ksoftirqd/012:05:260
121450400irq/29-eth0_g0_2487-21latency_hist09:44:320
121450400irq/29-eth0_g0_13-21kworker/0:110:45:330
121450400irq/29-eth0_g0_13-21kworker/0:109:58:140
121450400irq/29-eth0_g0_13-21kworker/0:109:28:420
121450400irq/29-eth0_g0_13-21kworker/0:109:17:020
121550390irq/30-eth0_g0_96852sleep110:54:551
121550390irq/30-eth0_g0_8318-21chrt10:41:441
121550390irq/30-eth0_g0_1221-21kworker/1:212:08:081
121550390irq/30-eth0_g0_1221-21kworker/1:211:14:011
121550390irq/30-eth0_g0_1221-21kworker/1:210:29:101
121550390irq/30-eth0_g0_1221-21kworker/1:210:04:061
121550390irq/30-eth0_g0_0-21swapper/111:58:141
121450390irq/29-eth0_g0_31ksoftirqd/012:24:540
121450390irq/29-eth0_g0_31ksoftirqd/010:55:570
121450390irq/29-eth0_g0_13-21kworker/0:112:35:170
121450390irq/29-eth0_g0_13-21kworker/0:111:41:320
121450390irq/29-eth0_g0_13-21kworker/0:111:33:210
121450390irq/29-eth0_g0_13-21kworker/0:111:00:170
121450390irq/29-eth0_g0_13-21kworker/0:110:09:550
121450390irq/29-eth0_g0_13-21kworker/0:109:35:460
121450390irq/29-eth0_g0_13-21kworker/0:109:10:580
121390ksoftirqd/1121450irq/29-eth0_g0_08:43:431
121390ksoftirqd/1121450irq/29-eth0_g0_08:43:431
121390ksoftirqd/1121450irq/29-eth0_g0_08:16:541
121550380irq/30-eth0_g0_31ksoftirqd/011:16:130
121550380irq/30-eth0_g0_1221-21kworker/1:211:26:001
121550380irq/30-eth0_g0_1221-21kworker/1:211:22:271
121550380irq/30-eth0_g0_1221-21kworker/1:209:39:391
121550380irq/30-eth0_g0_1221-21kworker/1:209:12:161
121550380irq/30-eth0_g0_121ksoftirqd/112:12:061
121550380irq/30-eth0_g0_0-21swapper/110:52:241
121450380irq/29-eth0_g0_28262-21munin-run08:39:310
121450380irq/29-eth0_g0_28262-21munin-run08:39:310
121450380irq/29-eth0_g0_1911-21runrttasks07:31:300
121450380irq/29-eth0_g0_13-21kworker/0:112:31:100
121450380irq/29-eth0_g0_13-21kworker/0:112:18:210
121450380irq/29-eth0_g0_13-21kworker/0:112:01:390
121450380irq/29-eth0_g0_13-21kworker/0:111:37:000
121450380irq/29-eth0_g0_13-21kworker/0:110:27:240
121450380irq/29-eth0_g0_13-21kworker/0:110:21:080
121450380irq/29-eth0_g0_13-21kworker/0:110:15:580
121450380irq/29-eth0_g0_13-21kworker/0:110:00:570
121450380irq/29-eth0_g0_13-21kworker/0:109:29:340
121450380irq/29-eth0_g0_13-21kworker/0:109:24:180
121450380irq/29-eth0_g0_0-21swapper/007:05:590
121380ksoftirqd/1121550irq/30-eth0_g0_11:49:581
121380ksoftirqd/1121450irq/29-eth0_g0_07:58:511
121380ksoftirqd/1121450irq/29-eth0_g0_07:39:411
121550370irq/30-eth0_g0_1221-21kworker/1:210:31:271
121550370irq/30-eth0_g0_1221-21kworker/1:209:29:451
121450370irq/29-eth0_g0_31ksoftirqd/011:09:380
121450370irq/29-eth0_g0_1911-21runrttasks09:02:200
121450370irq/29-eth0_g0_1911-21runrttasks07:59:160
121450370irq/29-eth0_g0_1911-21runrttasks07:35:260
121450370irq/29-eth0_g0_13-21kworker/0:112:20:370
121450370irq/29-eth0_g0_13-21kworker/0:112:20:370
121450370irq/29-eth0_g0_13-21kworker/0:111:24:480
121450370irq/29-eth0_g0_13-21kworker/0:110:42:420
121550360irq/30-eth0_g0_1972-21lldpd07:38:211
121550360irq/30-eth0_g0_1221-21kworker/1:212:37:321
121550360irq/30-eth0_g0_1221-21kworker/1:212:18:181
121550360irq/30-eth0_g0_1221-21kworker/1:211:30:451
121550360irq/30-eth0_g0_1221-21kworker/1:210:46:321
121550360irq/30-eth0_g0_1221-21kworker/1:210:13:491
121550360irq/30-eth0_g0_1221-21kworker/1:209:58:301
121550360irq/30-eth0_g0_121ksoftirqd/109:37:111
121450360irq/29-eth0_g0_31326-21latency_hist09:09:310
121450360irq/29-eth0_g0_28769-21latency_hist08:44:320
121450360irq/29-eth0_g0_1911-21runrttasks08:57:250
121450360irq/29-eth0_g0_1911-21runrttasks08:50:420
121450360irq/29-eth0_g0_1911-21runrttasks08:29:130
121450360irq/29-eth0_g0_1911-21runrttasks08:13:330
121450360irq/29-eth0_g0_1911-21runrttasks07:54:300
121450360irq/29-eth0_g0_1911-21runrttasks07:41:460
121450360irq/29-eth0_g0_1911-21runrttasks07:22:490
121450360irq/29-eth0_g0_1911-21runrttasks07:13:180
121450360irq/29-eth0_g0_13-21kworker/0:111:55:330
121450360irq/29-eth0_g0_13-21kworker/0:111:49:500
121450360irq/29-eth0_g0_13-21kworker/0:110:34:590
121360ksoftirqd/119105-21munin-run07:09:311
121360ksoftirqd/1121450irq/29-eth0_g0_09:00:361
19109993529cyclictest21263-21runrttasks07:30:031
19109993528cyclictest23505-21runrttasks07:52:291
121550350irq/30-eth0_g0_0-21swapper/109:26:091
121450350irq/29-eth0_g0_1911-21runrttasks11:48:430
121450350irq/29-eth0_g0_1911-21runrttasks08:42:310
121450350irq/29-eth0_g0_1911-21runrttasks08:22:180
121450350irq/29-eth0_g0_1911-21runrttasks08:07:100
121450350irq/29-eth0_g0_1911-21runrttasks07:46:300
19109993428cyclictest30958-21runrttasks09:05:231
19109993428cyclictest28238-21runrttasks08:39:171
19109993428cyclictest28238-21runrttasks08:39:171
19109993428cyclictest26962-21runrttasks08:26:161
19109993428cyclictest26368-21runrttasks08:20:161
19109993428cyclictest23094-21runrttasks07:48:371
19109993428cyclictest19187-21runrttasks07:09:331
19109993428cyclictest16319-21runrttasks12:00:091
121550340irq/30-eth0_g0_1221-21kworker/1:209:48:511
121450340irq/29-eth0_g0_1911-21runrttasks08:45:390
121450340irq/29-eth0_g0_1911-21runrttasks08:45:390
121450340irq/29-eth0_g0_1911-21runrttasks07:27:410
121450340irq/29-eth0_g0_1911-21runrttasks07:14:490
19109993327cyclictest10844-21runrttasks11:06:321
121450330irq/29-eth0_g0_0-21swapper/008:19:320
121330ksoftirqd/1121450irq/29-eth0_g0_08:00:151
121550320irq/30-eth0_g0_0-21swapper/108:52:081
121450320irq/29-eth0_g0_20815-21runrttasks07:25:451
121450320irq/29-eth0_g0_1911-21runrttasks08:02:320
121450310irq/29-eth0_g0_19887-21runrttasks07:16:471
19109993026cyclictest0-21swapper/108:48:361
19109993026cyclictest0-21swapper/108:48:361
19109993024cyclictest301442chrt08:57:481
19109993024cyclictest25511-21runrttasks08:12:091
19109993024cyclictest20354-21taskset07:21:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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