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2025-11-11 - 11:53

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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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 Nov 11, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1372521640chrt451850irq/30-eth0_g0_22:33:281
1372521640chrt451850irq/30-eth0_g0_22:33:281
121830ksoftirqd/1451750irq/29-eth0_g0_00:04:461
146872660sleep0451850irq/30-eth0_g0_22:35:240
121650ksoftirqd/1451850irq/30-eth0_g0_20:32:441
285042550sleep0451850irq/30-eth0_g0_23:34:160
24052540chrt451850irq/30-eth0_g0_21:44:580
62782520chrt451750irq/29-eth0_g0_19:49:511
121490ksoftirqd/1451850irq/30-eth0_g0_21:14:290
451850480irq/30-eth0_g0_13-21kworker/0:123:24:490
121480ksoftirqd/1451750irq/29-eth0_g0_23:11:521
121470ksoftirqd/1451750irq/29-eth0_g0_22:22:581
121470ksoftirqd/1451750irq/29-eth0_g0_21:25:341
121470ksoftirqd/1451750irq/29-eth0_g0_00:38:371
121460ksoftirqd/1451850irq/30-eth0_g0_22:21:210
121460ksoftirqd/1451850irq/30-eth0_g0_22:14:290
121460ksoftirqd/1451750irq/29-eth0_g0_21:49:471
451750450irq/29-eth0_g0_470-21kworker/1:123:29:441
451750450irq/29-eth0_g0_327142chrt21:38:581
121450ksoftirqd/1451850irq/30-eth0_g0_22:37:271
121450ksoftirqd/1451750irq/29-eth0_g0_22:59:431
121450ksoftirqd/1451750irq/29-eth0_g0_22:39:361
121450ksoftirqd/1451750irq/29-eth0_g0_22:14:370
121450ksoftirqd/1451750irq/29-eth0_g0_21:54:511
451850440irq/30-eth0_g0_15692-21/usr/sbin/munin20:29:420
451850440irq/30-eth0_g0_13-21kworker/0:122:54:550
451750440irq/29-eth0_g0_470-21kworker/1:100:14:371
451750440irq/29-eth0_g0_0-21swapper/121:09:441
121440ksoftirqd/1451850irq/30-eth0_g0_21:53:560
121440ksoftirqd/1451750irq/29-eth0_g0_20:59:521
121440ksoftirqd/1451750irq/29-eth0_g0_20:44:421
121440ksoftirqd/1451750irq/29-eth0_g0_20:04:521
121440ksoftirqd/1451750irq/29-eth0_g0_19:14:541
121440ksoftirqd/1451750irq/29-eth0_g0_00:02:301
451850430irq/30-eth0_g0_31ksoftirqd/000:15:150
121430ksoftirqd/1451850irq/30-eth0_g0_22:31:080
121430ksoftirqd/1451850irq/30-eth0_g0_22:31:080
121430ksoftirqd/1451850irq/30-eth0_g0_22:19:251
121430ksoftirqd/1451750irq/29-eth0_g0_22:09:491
121430ksoftirqd/1451750irq/29-eth0_g0_19:44:441
451850420irq/30-eth0_g0_3689-21taskset19:39:450
451850420irq/30-eth0_g0_13-21kworker/0:121:14:440
451750420irq/29-eth0_g0_121ksoftirqd/122:49:461
121420ksoftirqd/1451850irq/30-eth0_g0_21:19:011
121420ksoftirqd/1451850irq/30-eth0_g0_00:12:341
451850410irq/30-eth0_g0_4803-21unixbench_singl21:54:520
451850410irq/30-eth0_g0_31081-21unixbench_singl21:29:520
451850410irq/30-eth0_g0_31ksoftirqd/000:25:510
451850410irq/30-eth0_g0_31ksoftirqd/000:25:510
451850410irq/30-eth0_g0_31ksoftirqd/000:05:420
451850410irq/30-eth0_g0_28335-21ntp_kernel_pll_21:19:480
451850410irq/30-eth0_g0_13-21kworker/0:121:35:510
451850410irq/30-eth0_g0_121ksoftirqd/123:55:000
451750410irq/29-eth0_g0_470-21kworker/1:123:07:361
451750410irq/29-eth0_g0_1955-21runrttasks19:07:290
121410ksoftirqd/1451750irq/29-eth0_g0_23:35:311
451850400irq/30-eth0_g0_31ksoftirqd/023:21:090
451850400irq/30-eth0_g0_31ksoftirqd/023:03:070
451850400irq/30-eth0_g0_31ksoftirqd/022:53:390
451850400irq/30-eth0_g0_31ksoftirqd/022:29:120
451850400irq/30-eth0_g0_31ksoftirqd/000:20:440
451850400irq/30-eth0_g0_22169-21taskset23:06:590
451850400irq/30-eth0_g0_13-21kworker/0:123:54:260
451850400irq/30-eth0_g0_13-21kworker/0:123:11:010
451850400irq/30-eth0_g0_13-21kworker/0:121:39:460
451850400irq/30-eth0_g0_13-21kworker/0:121:39:460
451850400irq/30-eth0_g0_13-21kworker/0:100:13:240
451750400irq/29-eth0_g0_470-21kworker/1:123:56:221
451750400irq/29-eth0_g0_470-21kworker/1:123:44:381
451750400irq/29-eth0_g0_470-21kworker/1:123:16:371
451750400irq/29-eth0_g0_0-21swapper/121:40:341
451750400irq/29-eth0_g0_0-21swapper/121:40:341
121400ksoftirqd/1451750irq/29-eth0_g0_00:29:411
121400ksoftirqd/1451750irq/29-eth0_g0_00:19:461
451850390irq/30-eth0_g0_31ksoftirqd/023:42:200
451850390irq/30-eth0_g0_31ksoftirqd/000:36:080
451850390irq/30-eth0_g0_13-21kworker/0:123:47:020
451850390irq/30-eth0_g0_13-21kworker/0:122:39:520
451850390irq/30-eth0_g0_13-21kworker/0:122:03:450
451850390irq/30-eth0_g0_13-21kworker/0:100:30:560
451850390irq/30-eth0_g0_122782sleep122:25:521
451750390irq/29-eth0_g0_470-21kworker/1:123:52:451
451750390irq/29-eth0_g0_470-21kworker/1:123:28:051
451750390irq/29-eth0_g0_470-21kworker/1:122:49:251
451750390irq/29-eth0_g0_470-21kworker/1:122:03:331
451750390irq/29-eth0_g0_470-21kworker/1:121:44:561
451750390irq/29-eth0_g0_32304-21sed19:24:421
451750390irq/29-eth0_g0_121ksoftirqd/121:30:141
451750390irq/29-eth0_g0_121ksoftirqd/121:21:391
121390ksoftirqd/1451750irq/29-eth0_g0_19:37:161
451850380irq/30-eth0_g0_1955-21runrttasks00:02:170
451850380irq/30-eth0_g0_13-21kworker/0:122:47:020
451850380irq/30-eth0_g0_13-21kworker/0:122:04:460
451750380irq/29-eth0_g0_470-21kworker/1:119:59:301
451750380irq/29-eth0_g0_470-21kworker/1:100:26:381
451750380irq/29-eth0_g0_470-21kworker/1:100:26:381
451750380irq/29-eth0_g0_31ksoftirqd/021:25:080
451750380irq/29-eth0_g0_25062-21sed23:19:411
451750380irq/29-eth0_g0_121ksoftirqd/123:40:131
451750380irq/29-eth0_g0_0-21swapper/122:06:211
121380ksoftirqd/1451750irq/29-eth0_g0_19:09:471
451850370irq/30-eth0_g0_9757-21taskset20:04:430
451850370irq/30-eth0_g0_31101-21df19:19:430
451850370irq/30-eth0_g0_1955-21runrttasks20:09:580
451850370irq/30-eth0_g0_121ksoftirqd/122:57:281
451750370irq/29-eth0_g0_27881-21unixbench_multi19:04:501
121370ksoftirqd/1451850irq/30-eth0_g0_23:18:060
121370ksoftirqd/1451750irq/29-eth0_g0_20:10:341
451850360irq/30-eth0_g0_8257-21sort19:59:290
451850360irq/30-eth0_g0_22356-21find20:54:520
451850360irq/30-eth0_g0_17597-21unixbench_singl20:34:510
451850360irq/30-eth0_g0_0-21swapper/023:35:110
451850360irq/30-eth0_g0_0-21swapper/019:14:500
121360ksoftirqd/1451750irq/29-eth0_g0_20:55:081
121360ksoftirqd/1451750irq/29-eth0_g0_20:50:161
121360ksoftirqd/1451750irq/29-eth0_g0_19:30:291
451850350irq/30-eth0_g0_341-21grep19:24:510
451850350irq/30-eth0_g0_1955-21runrttasks20:49:570
451850350irq/30-eth0_g0_1955-21runrttasks19:29:490
451750350irq/29-eth0_g0_0-21swapper/121:04:451
451750350irq/29-eth0_g0_0-21swapper/120:39:301
451750350irq/29-eth0_g0_0-21swapper/120:19:531
2840199352cyclictest121412sleep120:14:421
451850340irq/30-eth0_g0_2831-21unixbench_multi19:34:510
451850340irq/30-eth0_g0_24671-21ntp_states21:04:490
451850340irq/30-eth0_g0_1955-21runrttasks20:02:440
451850340irq/30-eth0_g0_1955-21runrttasks19:49:060
451850340irq/30-eth0_g0_0-21swapper/020:24:460
451750340irq/29-eth0_g0_5900-21egrep19:49:450
451750340irq/29-eth0_g0_0-21swapper/120:04:301
451750340irq/29-eth0_g0_0-21swapper/119:19:301
451850330irq/30-eth0_g0_28802-21missed_timers19:09:470
451850330irq/30-eth0_g0_23295-21latency20:59:450
451850330irq/30-eth0_g0_1955-21runrttasks20:14:390
451850330irq/30-eth0_g0_18741-21timerandwakeup20:39:520
451750330irq/29-eth0_g0_470-21kworker/1:119:42:211
451750330irq/29-eth0_g0_18823-21unixbench_singl20:39:531
451850320irq/30-eth0_g0_1955-21runrttasks20:47:080
451850310irq/30-eth0_g0_0-21swapper/020:24:290
451750310irq/29-eth0_g0_0-21swapper/120:24:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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