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2026-05-14 - 22:19

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 May 14, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1925921700sleep1121450irq/29-eth0_g0_10:42:421
3025221040sleep1121450irq/29-eth0_g0_12:31:261
121870ksoftirqd/1121550irq/30-eth0_g0_07:52:251
121760ksoftirqd/1121550irq/30-eth0_g0_10:47:121
121740ksoftirqd/1121550irq/30-eth0_g0_07:22:461
121720ksoftirqd/1121450irq/29-eth0_g0_07:29:281
121700ksoftirqd/1121550irq/30-eth0_g0_11:34:531
121670ksoftirqd/1121550irq/30-eth0_g0_09:42:011
182942560sleep1121450irq/29-eth0_g0_10:33:131
174832560sleep1121550irq/30-eth0_g0_10:24:391
121500ksoftirqd/1121550irq/30-eth0_g0_10:07:531
121500ksoftirqd/1121550irq/30-eth0_g0_09:56:391
121480ksoftirqd/1121550irq/30-eth0_g0_10:52:531
140622460sleep1121550irq/30-eth0_g0_09:51:001
121460ksoftirqd/1121550irq/30-eth0_g0_11:19:281
121460ksoftirqd/1121550irq/30-eth0_g0_10:23:501
121550430irq/30-eth0_g0_1221-21kworker/1:212:24:241
121550430irq/30-eth0_g0_1221-21kworker/1:211:01:211
121430ksoftirqd/1121550irq/30-eth0_g0_11:31:391
121430ksoftirqd/1121550irq/30-eth0_g0_09:46:170
121430ksoftirqd/1121550irq/30-eth0_g0_09:30:491
308422420sleep0121550irq/30-eth0_g0_12:37:260
121550420irq/30-eth0_g0_1221-21kworker/1:211:16:061
121550420irq/30-eth0_g0_121ksoftirqd/111:25:270
121550420irq/30-eth0_g0_121ksoftirqd/110:57:201
121550420irq/30-eth0_g0_121ksoftirqd/110:57:201
121450420irq/29-eth0_g0_121ksoftirqd/109:28:370
121450410irq/29-eth0_g0_31ksoftirqd/011:46:560
121450410irq/29-eth0_g0_31ksoftirqd/011:33:250
121450410irq/29-eth0_g0_31ksoftirqd/010:54:010
121450410irq/29-eth0_g0_31ksoftirqd/010:54:010
121450410irq/29-eth0_g0_31ksoftirqd/010:45:160
121450410irq/29-eth0_g0_13-21kworker/0:110:33:580
121450410irq/29-eth0_g0_121ksoftirqd/110:49:290
121450400irq/29-eth0_g0_31ksoftirqd/010:39:530
121450400irq/29-eth0_g0_31ksoftirqd/010:12:050
121450400irq/29-eth0_g0_1911-21runrttasks07:05:430
121450400irq/29-eth0_g0_13-21kworker/0:112:16:160
121450400irq/29-eth0_g0_13-21kworker/0:111:55:260
121450400irq/29-eth0_g0_0-21swapper/010:03:540
121400ksoftirqd/1121550irq/30-eth0_g0_09:33:270
121400ksoftirqd/1121450irq/29-eth0_g0_12:30:520
121400ksoftirqd/1121450irq/29-eth0_g0_08:14:371
121550390irq/30-eth0_g0_1221-21kworker/1:211:48:101
121550390irq/30-eth0_g0_1221-21kworker/1:211:25:041
121550390irq/30-eth0_g0_1221-21kworker/1:211:06:091
121550390irq/30-eth0_g0_1221-21kworker/1:210:11:211
121550390irq/30-eth0_g0_0-21swapper/109:22:181
121550390irq/30-eth0_g0_0-21swapper/109:13:531
121550390irq/30-eth0_g0_0-21swapper/109:13:531
121450390irq/29-eth0_g0_13-21kworker/0:112:23:470
121450390irq/29-eth0_g0_13-21kworker/0:112:08:360
121450390irq/29-eth0_g0_13-21kworker/0:111:12:160
121450390irq/29-eth0_g0_13-21kworker/0:110:30:460
121450390irq/29-eth0_g0_13-21kworker/0:110:26:470
121450390irq/29-eth0_g0_13-21kworker/0:109:13:400
121450390irq/29-eth0_g0_13-21kworker/0:109:13:400
121390ksoftirqd/1121550irq/30-eth0_g0_09:49:000
121390ksoftirqd/1121450irq/29-eth0_g0_08:57:111
121390ksoftirqd/1121450irq/29-eth0_g0_07:59:381
121550380irq/30-eth0_g0_1221-21kworker/1:211:59:231
121550380irq/30-eth0_g0_1221-21kworker/1:211:54:181
121550380irq/30-eth0_g0_1221-21kworker/1:211:09:301
121550380irq/30-eth0_g0_1221-21kworker/1:210:36:111
121550380irq/30-eth0_g0_1221-21kworker/1:210:02:231
121550380irq/30-eth0_g0_0-21swapper/112:05:511
121550380irq/30-eth0_g0_0-21swapper/111:39:091
121550380irq/30-eth0_g0_0-21swapper/111:39:091
121450380irq/29-eth0_g0_31ksoftirqd/011:59:330
121450380irq/29-eth0_g0_13-21kworker/0:112:26:060
121450380irq/29-eth0_g0_13-21kworker/0:112:12:480
121450380irq/29-eth0_g0_13-21kworker/0:111:50:440
121450380irq/29-eth0_g0_13-21kworker/0:111:42:060
121450380irq/29-eth0_g0_13-21kworker/0:111:42:060
121450380irq/29-eth0_g0_13-21kworker/0:110:19:240
121450380irq/29-eth0_g0_13-21kworker/0:110:14:510
121450380irq/29-eth0_g0_13-21kworker/0:109:20:050
121450380irq/29-eth0_g0_121ksoftirqd/109:14:050
121450380irq/29-eth0_g0_0-21swapper/009:38:100
121380ksoftirqd/1121450irq/29-eth0_g0_09:38:551
121550370irq/30-eth0_g0_1911-21runrttasks07:04:321
121550370irq/30-eth0_g0_1221-21kworker/1:210:15:231
121550370irq/30-eth0_g0_1221-21kworker/1:209:24:041
121550370irq/30-eth0_g0_121ksoftirqd/112:36:231
121550370irq/30-eth0_g0_0-21swapper/112:12:271
121550370irq/30-eth0_g0_0-21swapper/111:50:351
121450370irq/29-eth0_g0_31ksoftirqd/009:40:540
121450370irq/29-eth0_g0_1911-21runrttasks11:04:220
121450370irq/29-eth0_g0_13-21kworker/0:111:35:510
121450370irq/29-eth0_g0_13-21kworker/0:111:17:510
121450370irq/29-eth0_g0_13-21kworker/0:111:00:500
121450370irq/29-eth0_g0_13-21kworker/0:109:57:290
121450370irq/29-eth0_g0_0-21swapper/011:23:400
121370ksoftirqd/1121450irq/29-eth0_g0_12:19:451
121550360irq/30-eth0_g0_1221-21kworker/1:209:17:201
121450360irq/29-eth0_g0_1911-21runrttasks08:59:190
121450360irq/29-eth0_g0_1911-21runrttasks08:51:230
121450360irq/29-eth0_g0_1911-21runrttasks08:27:240
121450360irq/29-eth0_g0_1911-21runrttasks08:27:240
121450360irq/29-eth0_g0_1911-21runrttasks07:19:210
121450360irq/29-eth0_g0_1911-21runrttasks07:15:220
121450360irq/29-eth0_g0_13-21kworker/0:110:05:080
3005999351cyclictest5763-21latency_hist08:28:551
3005999351cyclictest5763-21latency_hist08:28:551
121550350irq/30-eth0_g0_1221-21kworker/1:212:15:041
121550350irq/30-eth0_g0_1221-21kworker/1:209:45:181
121450350irq/29-eth0_g0_1911-21runrttasks08:43:530
121450350irq/29-eth0_g0_1911-21runrttasks08:34:210
121450350irq/29-eth0_g0_1911-21runrttasks08:30:490
121450350irq/29-eth0_g0_1911-21runrttasks08:18:000
121450350irq/29-eth0_g0_1911-21runrttasks08:12:320
121450350irq/29-eth0_g0_1911-21runrttasks07:51:430
121450350irq/29-eth0_g0_1911-21runrttasks07:42:120
121450350irq/29-eth0_g0_1911-21runrttasks07:36:000
121450350irq/29-eth0_g0_1911-21runrttasks07:25:230
121450350irq/29-eth0_g0_1911-21runrttasks07:13:260
121450350irq/29-eth0_g0_0-21swapper/008:22:380
121450350irq/29-eth0_g0_0-21swapper/008:22:380
3005999341cyclictest52232sleep108:23:541
3005999341cyclictest52232sleep108:23:541
3005999341cyclictest0-21swapper/108:39:041
3005999341cyclictest0-21swapper/108:38:331
121450340irq/29-eth0_g0_1911-21runrttasks08:55:140
121450340irq/29-eth0_g0_1911-21runrttasks08:46:170
121450340irq/29-eth0_g0_1911-21runrttasks07:47:340
121450340irq/29-eth0_g0_1911-21runrttasks07:31:300
121340ksoftirqd/1121450irq/29-eth0_g0_07:15:441
3005999331cyclictest0-21swapper/108:10:141
3005999330cyclictest0-21swapper/107:38:561
121550330irq/30-eth0_g0_0-21swapper/108:29:181
121450330irq/29-eth0_g0_1911-21runrttasks09:05:190
121450330irq/29-eth0_g0_1911-21runrttasks07:58:110
3005999321cyclictest0-21swapper/109:03:551
121550320irq/30-eth0_g0_3718-21sort08:08:551
121550320irq/30-eth0_g0_0-21swapper/107:39:551
121450320irq/29-eth0_g0_1972-21lldpd08:01:460
3005999311cyclictest2696-21taskset07:58:551
3005999311cyclictest0-21swapper/107:28:501
3005999310cyclictest0-21swapper/107:09:051
121450310irq/29-eth0_g0_3740-21latency_hist08:08:560
3005999301cyclictest0-21swapper/108:49:031
121450300irq/29-eth0_g0_9596-21runrttasks09:07:011
121550270irq/30-eth0_g0_0-21swapper/107:48:231
121450270irq/29-eth0_g0_7781-21cat08:48:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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