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2026-04-27 - 00:03

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 Sun Apr 26, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34921610sleep1121450irq/29-eth0_g0_09:48:011
121650ksoftirqd/1121450irq/29-eth0_g0_10:54:371
307052590sleep1121550irq/30-eth0_g0_09:27:001
3332520sleep0121450irq/29-eth0_g0_09:47:490
121510ksoftirqd/1121550irq/30-eth0_g0_12:00:421
121500ksoftirqd/1121550irq/30-eth0_g0_09:39:021
121500ksoftirqd/1121450irq/29-eth0_g0_11:11:001
121500ksoftirqd/1121450irq/29-eth0_g0_11:05:351
121490ksoftirqd/1121550irq/30-eth0_g0_11:45:081
121480ksoftirqd/1121550irq/30-eth0_g0_10:05:211
121550460irq/30-eth0_g0_1221-21kworker/1:212:22:331
121460ksoftirqd/1121550irq/30-eth0_g0_11:21:041
119052460sleep1121550irq/30-eth0_g0_11:41:171
102662460sleep1121550irq/30-eth0_g0_11:24:541
172312450sleep0121450irq/29-eth0_g0_12:34:160
124922450sleep0121450irq/29-eth0_g0_11:47:130
121450450irq/29-eth0_g0_31ksoftirqd/010:07:030
121450ksoftirqd/1121550irq/30-eth0_g0_10:40:371
121450ksoftirqd/1121550irq/30-eth0_g0_10:32:441
121450ksoftirqd/1121550irq/30-eth0_g0_09:11:401
121450ksoftirqd/1121450irq/29-eth0_g0_12:35:080
121450ksoftirqd/1121450irq/29-eth0_g0_11:34:170
121450ksoftirqd/1121450irq/29-eth0_g0_09:16:501
121440ksoftirqd/1121450irq/29-eth0_g0_10:15:171
121450430irq/29-eth0_g0_1911-21runrttasks11:42:530
121430ksoftirqd/1121450irq/29-eth0_g0_12:35:341
121430ksoftirqd/1121450irq/29-eth0_g0_10:53:331
121550420irq/30-eth0_g0_1221-21kworker/1:211:37:311
121450420irq/29-eth0_g0_1911-21runrttasks09:14:540
121450420irq/29-eth0_g0_13-21kworker/0:111:02:140
121550410irq/30-eth0_g0_1221-21kworker/1:210:22:561
121450410irq/29-eth0_g0_31ksoftirqd/011:08:300
121450410irq/29-eth0_g0_31ksoftirqd/010:59:340
121450410irq/29-eth0_g0_1911-21runrttasks09:25:070
121450410irq/29-eth0_g0_1911-21runrttasks09:11:470
121450410irq/29-eth0_g0_121ksoftirqd/110:44:550
121450410irq/29-eth0_g0_121ksoftirqd/110:44:550
121550400irq/30-eth0_g0_121ksoftirqd/109:50:381
121450400irq/29-eth0_g0_31ksoftirqd/012:14:080
121450400irq/29-eth0_g0_31ksoftirqd/009:51:080
121450400irq/29-eth0_g0_1679099cyclictest12:04:020
121450400irq/29-eth0_g0_13-21kworker/0:111:17:210
121450400irq/29-eth0_g0_13-21kworker/0:110:53:390
121450400irq/29-eth0_g0_13-21kworker/0:110:44:360
121450400irq/29-eth0_g0_13-21kworker/0:110:15:420
121450400irq/29-eth0_g0_121ksoftirqd/109:40:080
121550390irq/30-eth0_g0_121ksoftirqd/112:12:321
121550390irq/30-eth0_g0_121ksoftirqd/110:01:251
121550390irq/30-eth0_g0_121ksoftirqd/109:20:441
121550390irq/30-eth0_g0_0-21swapper/110:38:441
121550390irq/30-eth0_g0_0-21swapper/109:32:291
121450390irq/29-eth0_g0_1911-21runrttasks11:12:280
121450390irq/29-eth0_g0_1911-21runrttasks09:36:470
121450390irq/29-eth0_g0_1911-21runrttasks07:49:350
121450390irq/29-eth0_g0_13-21kworker/0:112:09:350
121450390irq/29-eth0_g0_13-21kworker/0:111:37:410
121450390irq/29-eth0_g0_13-21kworker/0:110:29:370
121450390irq/29-eth0_g0_121ksoftirqd/109:29:450
121390ksoftirqd/1121550irq/30-eth0_g0_12:29:050
121390ksoftirqd/1121550irq/30-eth0_g0_12:22:130
121390ksoftirqd/1121550irq/30-eth0_g0_11:21:300
121390ksoftirqd/1121550irq/30-eth0_g0_10:09:440
121390ksoftirqd/1121550irq/30-eth0_g0_10:01:270
121390ksoftirqd/1121550irq/30-eth0_g0_09:54:570
121390ksoftirqd/1121550irq/30-eth0_g0_09:21:550
121390ksoftirqd/1121550irq/30-eth0_g0_08:44:000
121390ksoftirqd/1121550irq/30-eth0_g0_08:35:360
121390ksoftirqd/1121550irq/30-eth0_g0_08:21:270
1679199381cyclictest18297-21chrt07:24:361
1679199381cyclictest107832sleep111:30:001
121550380irq/30-eth0_g0_1221-21kworker/1:212:15:551
121550380irq/30-eth0_g0_1221-21kworker/1:211:54:341
121550380irq/30-eth0_g0_121ksoftirqd/112:05:201
121550380irq/30-eth0_g0_121ksoftirqd/111:04:021
121550380irq/30-eth0_g0_121ksoftirqd/110:28:361
121550380irq/30-eth0_g0_121ksoftirqd/109:39:481
121550380irq/30-eth0_g0_0-21swapper/110:11:361
121550380irq/30-eth0_g0_0-21swapper/109:57:481
121450380irq/29-eth0_g0_1911-21runrttasks10:25:300
121450380irq/29-eth0_g0_1911-21runrttasks10:19:470
121450380irq/29-eth0_g0_121ksoftirqd/112:27:271
121450380irq/29-eth0_g0_0-21swapper/007:08:190
121380ksoftirqd/1121550irq/30-eth0_g0_11:59:150
121380ksoftirqd/1121550irq/30-eth0_g0_11:53:420
121380ksoftirqd/1121550irq/30-eth0_g0_10:37:510
1679199372cyclictest1972-21lldpd08:39:191
121550370irq/30-eth0_g0_121ksoftirqd/110:49:261
121550370irq/30-eth0_g0_121ksoftirqd/110:49:261
121550370irq/30-eth0_g0_0-21swapper/112:32:511
121550370irq/30-eth0_g0_0-21swapper/111:16:041
121450370irq/29-eth0_g0_31ksoftirqd/012:14:440
121450370irq/29-eth0_g0_13-21kworker/0:111:26:260
121370ksoftirqd/1121450irq/29-eth0_g0_07:54:371
1679199362cyclictest24368-21cat08:24:371
1679199361cyclictest20346-21cat07:44:361
121450360irq/29-eth0_g0_1911-21runrttasks07:49:540
121360ksoftirqd/1121550irq/30-eth0_g0_09:05:480
121360ksoftirqd/1121550irq/30-eth0_g0_08:28:410
121360ksoftirqd/1121550irq/30-eth0_g0_08:15:100
1679199351cyclictest27899-21chrt08:59:361
1679199351cyclictest20854-21sed07:49:371
121550350irq/30-eth0_g0_21746-21taskset07:58:431
121450350irq/29-eth0_g0_1911-21runrttasks09:01:430
121450350irq/29-eth0_g0_1911-21runrttasks08:31:370
121450350irq/29-eth0_g0_1911-21runrttasks08:31:370
121450350irq/29-eth0_g0_1221-21kworker/1:211:57:181
121350ksoftirqd/1121550irq/30-eth0_g0_07:57:300
1679199341cyclictest26949-21sort08:49:371
1679199341cyclictest0-21swapper/108:40:521
1679199341cyclictest0-21swapper/107:11:271
1679199340cyclictest0-21swapper/108:05:391
121450340irq/29-eth0_g0_19985-21runrttasks07:40:460
121450340irq/29-eth0_g0_1911-21runrttasks08:47:410
121450340irq/29-eth0_g0_1911-21runrttasks07:07:011
121450340irq/29-eth0_g0_0-21swapper/008:13:080
1679199331cyclictest223312sleep108:04:361
1679199331cyclictest0-21swapper/107:34:301
1679199331cyclictest0-21swapper/107:27:491
1679199331cyclictest0-21swapper/107:16:361
121450330irq/29-eth0_g0_1911-21runrttasks08:58:330
121450330irq/29-eth0_g0_1911-21runrttasks08:52:370
1679199321cyclictest0-21swapper/108:50:291
1679199321cyclictest0-21swapper/108:32:271
1679199321cyclictest0-21swapper/108:32:271
1679199321cyclictest0-21swapper/108:18:351
1679199321cyclictest0-21swapper/107:36:351
121450320irq/29-eth0_g0_28491-21runrttasks09:04:471
121450320irq/29-eth0_g0_19445-21runrttasks07:35:180
121450320irq/29-eth0_g0_19312-21munin-run07:34:370
121450320irq/29-eth0_g0_17164-21seq07:13:080
1679199311cyclictest1972-21lldpd08:11:161
121450310irq/29-eth0_g0_0-21swapper/007:24:240
121450310irq/29-eth0_g0_0-21swapper/007:18:590
121310ksoftirqd/124840-21taskset08:29:191
121450300irq/29-eth0_g0_27982-21runrttasks08:59:421
121450300irq/29-eth0_g0_22292-21sshd08:04:080
121450300irq/29-eth0_g0_18419-21runrttasks07:25:080
121450290irq/29-eth0_g0_0-21swapper/008:09:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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