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2026-04-23 - 12:13

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 50 highest latencies:
System rack3slot5s.osadl.org (updated Thu Apr 23, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211270ksoftirqd/1121550irq/30-eth0_g0_00:10:371
932421160sleep1121450irq/29-eth0_g0_00:24:161
932421160sleep1121450irq/29-eth0_g0_00:24:161
121860ksoftirqd/1121550irq/30-eth0_g0_23:53:350
121740ksoftirqd/1121550irq/30-eth0_g0_23:00:260
121570ksoftirqd/1121550irq/30-eth0_g0_21:59:441
121560ksoftirqd/1121550irq/30-eth0_g0_23:05:041
121560ksoftirqd/1121550irq/30-eth0_g0_22:10:471
121530ksoftirqd/1121550irq/30-eth0_g0_00:03:291
121520ksoftirqd/1121550irq/30-eth0_g0_23:13:051
121520ksoftirqd/1121550irq/30-eth0_g0_21:24:581
121510ksoftirqd/1121550irq/30-eth0_g0_23:23:321
121510ksoftirqd/1121550irq/30-eth0_g0_22:47:321
121510ksoftirqd/1121550irq/30-eth0_g0_22:47:321
121510ksoftirqd/1121450irq/29-eth0_g0_00:39:081
323352500sleep0121450irq/29-eth0_g0_22:49:210
323352500sleep0121450irq/29-eth0_g0_22:49:210
121500ksoftirqd/1121550irq/30-eth0_g0_22:21:391
121500ksoftirqd/1121450irq/29-eth0_g0_20:47:071
121500ksoftirqd/1121450irq/29-eth0_g0_19:44:441
121490ksoftirqd/1121550irq/30-eth0_g0_22:25:481
121490ksoftirqd/1121550irq/30-eth0_g0_22:00:341
121480ksoftirqd/1121550irq/30-eth0_g0_22:44:011
121480ksoftirqd/1121550irq/30-eth0_g0_21:40:081
121480ksoftirqd/1121450irq/29-eth0_g0_22:06:551
121480ksoftirqd/1121450irq/29-eth0_g0_00:30:491
121480ksoftirqd/1121450irq/29-eth0_g0_00:29:081
22892470sleep0121550irq/30-eth0_g0_23:12:550
121470ksoftirqd/1121550irq/30-eth0_g0_23:27:371
121470ksoftirqd/1121550irq/30-eth0_g0_19:26:061
121450460irq/29-eth0_g0_1911-21runrttasks19:08:030
121460ksoftirqd/1121550irq/30-eth0_g0_00:11:180
121460ksoftirqd/1121450irq/29-eth0_g0_23:41:451
121460ksoftirqd/1121450irq/29-eth0_g0_00:15:181
121450ksoftirqd/1121550irq/30-eth0_g0_23:46:191
121450ksoftirqd/1121550irq/30-eth0_g0_22:38:171
121450ksoftirqd/1121550irq/30-eth0_g0_22:38:171
121450ksoftirqd/1121550irq/30-eth0_g0_22:31:451
121450ksoftirqd/1121550irq/30-eth0_g0_21:38:561
121450ksoftirqd/1121450irq/29-eth0_g0_23:30:321
121450ksoftirqd/1121450irq/29-eth0_g0_23:15:021
121450ksoftirqd/1121450irq/29-eth0_g0_00:05:230
290812440sleep1121550irq/30-eth0_g0_22:16:391
121440ksoftirqd/1121550irq/30-eth0_g0_22:56:531
121440ksoftirqd/1121550irq/30-eth0_g0_22:51:361
121440ksoftirqd/1121450irq/29-eth0_g0_23:57:271
121450430irq/29-eth0_g0_1016899cyclictest22:35:220
121450430irq/29-eth0_g0_1016899cyclictest22:35:220
121430ksoftirqd/1121550irq/30-eth0_g0_21:28:550
121430ksoftirqd/1121550irq/30-eth0_g0_00:31:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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