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2025-07-01 - 05:26

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 Tue Jul 01, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1178221350sleep02288650irq/29-eth0_g0_22:25:530
156402800sleep12288650irq/29-eth0_g0_22:42:561
226242700sleep02288650irq/29-eth0_g0_23:08:350
121620ksoftirqd/12288650irq/29-eth0_g0_22:18:341
33572610sleep12288750irq/30-eth0_g0_00:07:541
121600ksoftirqd/12288650irq/29-eth0_g0_21:08:301
289932590sleep12288650irq/29-eth0_g0_19:13:081
121530ksoftirqd/12288650irq/29-eth0_g0_21:58:221
121500ksoftirqd/12288750irq/30-eth0_g0_21:27:400
121500ksoftirqd/12288750irq/30-eth0_g0_19:48:281
121500ksoftirqd/12288650irq/29-eth0_g0_21:18:121
121490ksoftirqd/12288650irq/29-eth0_g0_23:01:351
121490ksoftirqd/12288650irq/29-eth0_g0_23:01:351
121480ksoftirqd/12288750irq/30-eth0_g0_21:38:291
121480ksoftirqd/12288750irq/30-eth0_g0_21:37:221
91852470sleep12288750irq/30-eth0_g0_22:14:111
121470ksoftirqd/12288750irq/30-eth0_g0_21:48:300
121470ksoftirqd/12288650irq/29-eth0_g0_23:48:311
121460ksoftirqd/12288750irq/30-eth0_g0_22:43:141
121460ksoftirqd/12288750irq/30-eth0_g0_21:45:210
121460ksoftirqd/12288750irq/30-eth0_g0_00:27:201
2288650450irq/29-eth0_g0_470-21kworker/1:123:20:121
2288650450irq/29-eth0_g0_470-21kworker/1:121:28:431
121450ksoftirqd/12288650irq/29-eth0_g0_22:56:271
121450ksoftirqd/12288650irq/29-eth0_g0_21:46:011
2288650440irq/29-eth0_g0_470-21kworker/1:122:06:261
217762440chrt2288650irq/29-eth0_g0_23:07:580
217762440chrt2288650irq/29-eth0_g0_23:07:580
121440ksoftirqd/12288750irq/30-eth0_g0_22:52:380
121440ksoftirqd/12288750irq/30-eth0_g0_22:52:380
121440ksoftirqd/12288650irq/29-eth0_g0_21:13:231
121440ksoftirqd/12288650irq/29-eth0_g0_19:38:271
2288750430irq/30-eth0_g0_31ksoftirqd/021:23:020
2288650430irq/29-eth0_g0_121ksoftirqd/123:23:251
2288650430irq/29-eth0_g0_121ksoftirqd/100:15:221
2288650430irq/29-eth0_g0_104732sleep100:35:051
121430ksoftirqd/12288750irq/30-eth0_g0_00:16:420
121430ksoftirqd/12288650irq/29-eth0_g0_20:38:291
121430ksoftirqd/12288650irq/29-eth0_g0_19:23:211
2288750420irq/30-eth0_g0_22885-21kworker/0:222:54:230
2288750410irq/30-eth0_g0_31ksoftirqd/023:55:580
2288750410irq/30-eth0_g0_22885-21kworker/0:222:10:320
2288750410irq/30-eth0_g0_22885-21kworker/0:222:04:300
2288750410irq/30-eth0_g0_121ksoftirqd/122:14:010
2288650410irq/29-eth0_g0_470-21kworker/1:123:53:281
121410ksoftirqd/12288750irq/30-eth0_g0_23:08:561
121410ksoftirqd/12288650irq/29-eth0_g0_22:36:311
121410ksoftirqd/12288650irq/29-eth0_g0_19:31:221
276872400sleep12288650irq/29-eth0_g0_23:30:211
2288750400irq/30-eth0_g0_31647-21df_abs19:23:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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