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2025-09-13 - 17:12

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Sat Sep 13, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121530ksoftirqd/1399050irq/30-eth0_g0_09:19:190
121530ksoftirqd/1399050irq/30-eth0_g0_09:19:190
121500ksoftirqd/1399050irq/30-eth0_g0_10:16:251
121490ksoftirqd/1399050irq/30-eth0_g0_09:45:191
398950480irq/29-eth0_g0_22096-21/usr/sbin/munin10:30:260
399050460irq/30-eth0_g0_470-21kworker/1:110:31:541
399050450irq/30-eth0_g0_121ksoftirqd/108:25:351
398950450irq/29-eth0_g0_21122-21unixbench_singl07:00:360
121450ksoftirqd/1399050irq/30-eth0_g0_11:24:011
121450ksoftirqd/1399050irq/30-eth0_g0_11:24:011
121440ksoftirqd/1399050irq/30-eth0_g0_09:20:361
399050430irq/30-eth0_g0_470-21kworker/1:109:12:511
398950430irq/29-eth0_g0_121ksoftirqd/112:00:150
121430ksoftirqd/1398950irq/29-eth0_g0_11:48:341
121430ksoftirqd/1398950irq/29-eth0_g0_11:31:561
399050420irq/30-eth0_g0_470-21kworker/1:109:44:131
398950420irq/29-eth0_g0_22885-21kworker/0:212:10:540
398950420irq/29-eth0_g0_22885-21kworker/0:212:10:540
398950420irq/29-eth0_g0_22885-21kworker/0:210:08:250
398950420irq/29-eth0_g0_121ksoftirqd/109:06:250
121420ksoftirqd/1398950irq/29-eth0_g0_11:02:470
399050410irq/30-eth0_g0_121ksoftirqd/111:57:320
398950410irq/29-eth0_g0_31ksoftirqd/010:53:080
398950410irq/29-eth0_g0_22885-21kworker/0:209:35:380
121410ksoftirqd/1399050irq/30-eth0_g0_11:24:230
121410ksoftirqd/1399050irq/30-eth0_g0_11:24:230
121410ksoftirqd/1399050irq/30-eth0_g0_09:42:410
121410ksoftirqd/1398950irq/29-eth0_g0_08:50:371
399050400irq/30-eth0_g0_121ksoftirqd/109:36:501
398950400irq/29-eth0_g0_31ksoftirqd/012:23:120
398950400irq/29-eth0_g0_31ksoftirqd/012:05:290
398950400irq/29-eth0_g0_22885-21kworker/0:211:13:560
398950400irq/29-eth0_g0_22885-21kworker/0:211:07:530
398950400irq/29-eth0_g0_22885-21kworker/0:210:22:390
398950400irq/29-eth0_g0_22885-21kworker/0:210:15:270
398950400irq/29-eth0_g0_22885-21kworker/0:209:56:350
398950400irq/29-eth0_g0_22885-21kworker/0:209:34:230
398950400irq/29-eth0_g0_121ksoftirqd/110:38:321
2120199401cyclictest29816-21proc_pri07:55:391
121400ksoftirqd/1398950irq/29-eth0_g0_11:26:160
121400ksoftirqd/1398950irq/29-eth0_g0_10:10:361
121400ksoftirqd/1398950irq/29-eth0_g0_09:25:551
121400ksoftirqd/1398950irq/29-eth0_g0_09:05:321
399050390irq/30-eth0_g0_470-21kworker/1:112:00:101
399050390irq/30-eth0_g0_31ksoftirqd/012:16:330
399050390irq/30-eth0_g0_121ksoftirqd/112:31:531
399050390irq/30-eth0_g0_121ksoftirqd/112:04:391
399050390irq/30-eth0_g0_121ksoftirqd/110:44:331
399050390irq/30-eth0_g0_121ksoftirqd/110:44:331
398950390irq/29-eth0_g0_31ksoftirqd/012:32:380
398950390irq/29-eth0_g0_22885-21kworker/0:212:29:340
398950390irq/29-eth0_g0_22885-21kworker/0:211:16:200
398950390irq/29-eth0_g0_22885-21kworker/0:209:53:450
398950390irq/29-eth0_g0_22885-21kworker/0:209:47:090
398950390irq/29-eth0_g0_22885-21kworker/0:209:11:290
398950390irq/29-eth0_g0_17698-21sendmail_mailqu10:00:340
398950390irq/29-eth0_g0_0-21swapper/009:25:250
121390ksoftirqd/1398950irq/29-eth0_g0_11:43:271
399050380irq/30-eth0_g0_7840-21awk09:00:301
399050380irq/30-eth0_g0_470-21kworker/1:112:20:311
399050380irq/30-eth0_g0_470-21kworker/1:111:38:311
399050380irq/30-eth0_g0_470-21kworker/1:110:26:221
399050380irq/30-eth0_g0_121ksoftirqd/111:51:511
399050380irq/30-eth0_g0_121ksoftirqd/110:57:231
399050380irq/30-eth0_g0_121ksoftirqd/110:48:141
399050380irq/30-eth0_g0_121ksoftirqd/110:22:021
399050380irq/30-eth0_g0_121ksoftirqd/109:31:141
399050380irq/30-eth0_g0_0-21swapper/110:02:101
399050380irq/30-eth0_g0_0-21swapper/109:16:231
399050380irq/30-eth0_g0_0-21swapper/109:16:231
398950380irq/29-eth0_g0_31ksoftirqd/011:48:090
398950380irq/29-eth0_g0_31ksoftirqd/011:39:160
398950380irq/29-eth0_g0_23519-21unixbench_singl10:35:350
398950380irq/29-eth0_g0_22885-21kworker/0:211:51:170
398950380irq/29-eth0_g0_22885-21kworker/0:210:44:350
398950380irq/29-eth0_g0_22885-21kworker/0:210:44:350
398950380irq/29-eth0_g0_22885-21kworker/0:210:10:320
398950380irq/29-eth0_g0_121ksoftirqd/110:55:370
398950380irq/29-eth0_g0_121ksoftirqd/110:07:011
2120199389cyclictest0-21swapper/111:11:321
2120199382cyclictest27631-21cat11:05:121
2120199382cyclictest24329-21tail07:20:341
121380ksoftirqd/1398950irq/29-eth0_g0_11:27:231
399050370irq/30-eth0_g0_121ksoftirqd/109:50:241
399050370irq/30-eth0_g0_0-21swapper/112:17:321
398950370irq/29-eth0_g0_31ksoftirqd/011:34:080
398950370irq/29-eth0_g0_22885-21kworker/0:211:40:370
398950370irq/29-eth0_g0_22885-21kworker/0:210:45:570
398950370irq/29-eth0_g0_22885-21kworker/0:210:28:350
398950370irq/29-eth0_g0_22885-21kworker/0:209:21:460
2120199371cyclictest32420-21tail08:10:351
2120199371cyclictest21728-21ps07:05:321
399050360irq/30-eth0_g0_5299-21latency08:45:291
399050360irq/30-eth0_g0_470-21kworker/1:112:14:311
399050360irq/30-eth0_g0_470-21kworker/1:112:14:311
399050360irq/30-eth0_g0_470-21kworker/1:111:05:341
399050360irq/30-eth0_g0_0-21swapper/112:07:491
398950360irq/29-eth0_g0_4527-21missed_timers08:40:280
398950360irq/29-eth0_g0_23348-21proc_pri07:15:330
2120199362cyclictest2168-21lldpd09:55:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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