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2026-05-11 - 21:20

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Mon May 11, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2347921530sleep1121450irq/29-eth0_g0_09:30:321
687321370sleep1121450irq/29-eth0_g0_12:06:321
121900ksoftirqd/1121550irq/30-eth0_g0_11:47:271
299542640sleep1121550irq/30-eth0_g0_10:34:121
82452600chrt121450irq/29-eth0_g0_12:19:460
121540ksoftirqd/1121550irq/30-eth0_g0_09:13:511
121510ksoftirqd/1121550irq/30-eth0_g0_11:26:560
307302480chrt121550irq/30-eth0_g0_10:42:200
121480ksoftirqd/1121550irq/30-eth0_g0_12:20:421
121480ksoftirqd/1121450irq/29-eth0_g0_09:19:281
121480ksoftirqd/1121450irq/29-eth0_g0_07:23:361
121470ksoftirqd/1905199cyclictest10:29:181
121550460irq/30-eth0_g0_1500-21wc11:14:021
121460ksoftirqd/1121550irq/30-eth0_g0_11:31:501
121460ksoftirqd/1121450irq/29-eth0_g0_08:59:361
121460ksoftirqd/1121450irq/29-eth0_g0_07:45:151
315262450sleep0121450irq/29-eth0_g0_10:49:450
292902450sleep1121450irq/29-eth0_g0_10:28:151
121550450irq/30-eth0_g0_1221-21kworker/1:209:46:121
121450ksoftirqd/1121550irq/30-eth0_g0_10:20:191
121450ksoftirqd/1121550irq/30-eth0_g0_10:20:191
38672440sleep0121550irq/30-eth0_g0_11:36:590
121550440irq/30-eth0_g0_1221-21kworker/1:212:35:051
121450440irq/29-eth0_g0_31ksoftirqd/009:11:350
121440ksoftirqd/1121450irq/29-eth0_g0_11:57:031
121550430irq/30-eth0_g0_1221-21kworker/1:210:12:511
121430ksoftirqd/1121550irq/30-eth0_g0_09:53:221
121430ksoftirqd/1121450irq/29-eth0_g0_11:23:351
121550420irq/30-eth0_g0_1221-21kworker/1:211:18:491
121450420irq/29-eth0_g0_1911-21runrttasks09:48:390
121450420irq/29-eth0_g0_13-21kworker/0:111:33:100
121420ksoftirqd/1121450irq/29-eth0_g0_09:32:210
121420ksoftirqd/1121450irq/29-eth0_g0_07:57:181
266522410sleep1121450irq/29-eth0_g0_10:02:021
121450410irq/29-eth0_g0_31ksoftirqd/011:40:200
121450410irq/29-eth0_g0_31ksoftirqd/011:40:200
121450410irq/29-eth0_g0_31ksoftirqd/008:24:020
121450410irq/29-eth0_g0_1911-21runrttasks07:08:080
121450410irq/29-eth0_g0_13-21kworker/0:110:25:070
121550400irq/30-eth0_g0_121ksoftirqd/112:24:411
121450400irq/29-eth0_g0_13-21kworker/0:112:30:230
121450400irq/29-eth0_g0_13-21kworker/0:112:15:380
121450400irq/29-eth0_g0_13-21kworker/0:111:53:450
121450400irq/29-eth0_g0_13-21kworker/0:111:15:110
121450400irq/29-eth0_g0_13-21kworker/0:110:57:060
121450400irq/29-eth0_g0_13-21kworker/0:110:04:580
121450400irq/29-eth0_g0_13-21kworker/0:109:54:230
121450400irq/29-eth0_g0_13-21kworker/0:109:26:260
121450400irq/29-eth0_g0_13-21kworker/0:109:26:260
121400ksoftirqd/1121550irq/30-eth0_g0_11:07:180
121400ksoftirqd/1121550irq/30-eth0_g0_09:59:510
121400ksoftirqd/1121550irq/30-eth0_g0_09:35:130
121400ksoftirqd/1121550irq/30-eth0_g0_09:17:080
121400ksoftirqd/1121550irq/30-eth0_g0_09:05:400
121400ksoftirqd/1121550irq/30-eth0_g0_08:16:200
121400ksoftirqd/1121550irq/30-eth0_g0_08:16:200
121400ksoftirqd/1121550irq/30-eth0_g0_07:47:240
121400ksoftirqd/1121450irq/29-eth0_g0_09:34:271
121400ksoftirqd/1121450irq/29-eth0_g0_09:25:311
121400ksoftirqd/1121450irq/29-eth0_g0_09:25:311
121400ksoftirqd/1121450irq/29-eth0_g0_08:12:301
121400ksoftirqd/1121450irq/29-eth0_g0_08:12:301
121550390irq/30-eth0_g0_31ksoftirqd/011:02:220
121550390irq/30-eth0_g0_1221-21kworker/1:212:29:251
121550390irq/30-eth0_g0_0-21swapper/112:00:351
121550390irq/30-eth0_g0_0-21swapper/112:00:351
121550390irq/30-eth0_g0_0-21swapper/109:58:331
121550390irq/30-eth0_g0_0-21swapper/109:42:291
121550390irq/30-eth0_g0_0-21swapper/109:42:291
121450390irq/29-eth0_g0_13-21kworker/0:111:56:260
121450390irq/29-eth0_g0_13-21kworker/0:109:21:000
121450390irq/29-eth0_g0_121ksoftirqd/110:10:430
121390ksoftirqd/1121550irq/30-eth0_g0_12:36:000
121390ksoftirqd/1121550irq/30-eth0_g0_12:04:290
121390ksoftirqd/1121550irq/30-eth0_g0_11:10:560
121390ksoftirqd/1121550irq/30-eth0_g0_09:50:000
121390ksoftirqd/1121550irq/30-eth0_g0_09:40:020
121390ksoftirqd/1121550irq/30-eth0_g0_09:40:020
121390ksoftirqd/1121550irq/30-eth0_g0_09:02:310
121390ksoftirqd/1121550irq/30-eth0_g0_08:46:070
121390ksoftirqd/1121550irq/30-eth0_g0_08:30:110
121390ksoftirqd/1121450irq/29-eth0_g0_11:07:181
121390ksoftirqd/1121450irq/29-eth0_g0_10:49:261
121390ksoftirqd/1121450irq/29-eth0_g0_08:58:051
905199381cyclictest21243-21diskmemload10:17:381
121550380irq/30-eth0_g0_31ksoftirqd/007:19:020
121550380irq/30-eth0_g0_121ksoftirqd/111:50:311
121550380irq/30-eth0_g0_121ksoftirqd/111:39:031
121550380irq/30-eth0_g0_121ksoftirqd/111:39:031
121550380irq/30-eth0_g0_121ksoftirqd/111:36:321
121550380irq/30-eth0_g0_121ksoftirqd/111:25:511
121550380irq/30-eth0_g0_121ksoftirqd/110:57:211
121550380irq/30-eth0_g0_0-21swapper/112:15:321
121550380irq/30-eth0_g0_0-21swapper/110:39:281
121450380irq/29-eth0_g0_31ksoftirqd/012:27:590
121450380irq/29-eth0_g0_31ksoftirqd/011:45:240
121450380irq/29-eth0_g0_31ksoftirqd/008:10:370
121450380irq/29-eth0_g0_31ksoftirqd/008:10:370
121450380irq/29-eth0_g0_13-21kworker/0:112:02:020
121450380irq/29-eth0_g0_13-21kworker/0:112:02:020
121450380irq/29-eth0_g0_13-21kworker/0:110:46:070
121450380irq/29-eth0_g0_13-21kworker/0:110:31:430
121450380irq/29-eth0_g0_13-21kworker/0:110:21:350
121450380irq/29-eth0_g0_13-21kworker/0:110:21:350
121450380irq/29-eth0_g0_13-21kworker/0:110:14:510
121380ksoftirqd/1121550irq/30-eth0_g0_10:36:020
121380ksoftirqd/1121450irq/29-eth0_g0_11:03:191
121380ksoftirqd/1121450irq/29-eth0_g0_09:08:241
121380ksoftirqd/1121450irq/29-eth0_g0_08:51:561
121380ksoftirqd/1121450irq/29-eth0_g0_08:46:331
121380ksoftirqd/1121450irq/29-eth0_g0_08:26:201
121380ksoftirqd/1121450irq/29-eth0_g0_07:53:291
121380ksoftirqd/1121450irq/29-eth0_g0_07:36:021
121550370irq/30-eth0_g0_121ksoftirqd/110:44:271
121450370irq/29-eth0_g0_1911-21runrttasks07:27:370
121450370irq/29-eth0_g0_13-21kworker/0:111:22:080
121370ksoftirqd/1121450irq/29-eth0_g0_07:43:051
121550360irq/30-eth0_g0_121ksoftirqd/112:13:461
121550360irq/30-eth0_g0_121ksoftirqd/109:16:071
121550360irq/30-eth0_g0_0-21swapper/107:11:361
121450360irq/29-eth0_g0_9176-21sshd07:09:370
121450360irq/29-eth0_g0_8626-21runrttasks07:04:151
121450360irq/29-eth0_g0_1911-21runrttasks07:32:290
121450360irq/29-eth0_g0_13-21kworker/0:112:10:120
905199351cyclictest26938-21taskset10:04:271
121450350irq/29-eth0_g0_1911-21runrttasks07:52:070
121350ksoftirqd/1121550irq/30-eth0_g0_08:43:490
121350ksoftirqd/1121550irq/30-eth0_g0_08:05:490
121350ksoftirqd/1121550irq/30-eth0_g0_07:42:170
905199341cyclictest17716-21latency_hist08:34:021
905199341cyclictest0-21swapper/108:08:311
121340ksoftirqd/1121550irq/30-eth0_g0_08:24:140
905199331cyclictest178132sleep108:34:381
121450330irq/29-eth0_g0_1911-21runrttasks08:55:050
121450330irq/29-eth0_g0_1911-21runrttasks08:49:310
121450330irq/29-eth0_g0_1911-21runrttasks08:35:450
121450330irq/29-eth0_g0_1911-21runrttasks07:21:000
121450330irq/29-eth0_g0_14129-21munin-run07:59:020
905199321cyclictest166932sleep108:24:021
905199321cyclictest0-21swapper/108:14:111
905199321cyclictest0-21swapper/108:14:111
905199321cyclictest0-21swapper/108:03:481
905199321cyclictest0-21swapper/107:26:171
121450320irq/29-eth0_g0_0-21swapper/007:37:280
905199311cyclictest0-21swapper/107:30:541
121550310irq/30-eth0_g0_18696-21sh08:44:011
121550310irq/30-eth0_g0_0-21swapper/107:14:381
121450310irq/29-eth0_g0_1911-21runrttasks08:00:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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