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2026-06-08 - 02:13

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 Mon Jun 08, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2026921270sleep1121750irq/30-eth0_g0_21:17:191
747321250sleep1121650irq/29-eth0_g0_22:37:301
1211010ksoftirqd/1121750irq/30-eth0_g0_21:19:371
121840ksoftirqd/1121750irq/30-eth0_g0_22:21:181
311612790sleep1121750irq/30-eth0_g0_22:00:441
227682750sleep1121650irq/29-eth0_g0_21:27:521
18472710sleep0121750irq/30-eth0_g0_00:25:480
160342680chrt121750irq/30-eth0_g0_20:59:401
252372660sleep1121650irq/29-eth0_g0_21:38:051
121650ksoftirqd/19712sleep022:09:450
121510ksoftirqd/1121650irq/29-eth0_g0_23:35:320
121500ksoftirqd/1121750irq/30-eth0_g0_00:19:491
121490ksoftirqd/1121750irq/30-eth0_g0_22:49:491
121490ksoftirqd/1121750irq/30-eth0_g0_00:06:501
121490ksoftirqd/1121650irq/29-eth0_g0_00:21:200
121480ksoftirqd/1121750irq/30-eth0_g0_23:26:321
121480ksoftirqd/1121750irq/30-eth0_g0_23:23:231
121650470irq/29-eth0_g0_29915-21df_abs00:09:350
67322460sleep0121750irq/30-eth0_g0_22:34:370
63722460sleep1121650irq/29-eth0_g0_22:33:591
121650460irq/29-eth0_g0_31ksoftirqd/022:44:220
121650460irq/29-eth0_g0_31ksoftirqd/022:44:220
121650460irq/29-eth0_g0_21022-21cyclictest19:09:220
121460ksoftirqd/1121650irq/29-eth0_g0_22:47:460
121750450irq/30-eth0_g0_1219-21kworker/1:200:11:411
121450ksoftirqd/1121750irq/30-eth0_g0_23:54:410
121650440irq/29-eth0_g0_1964-21runrttasks23:06:160
121440ksoftirqd/1121650irq/29-eth0_g0_20:50:541
121440ksoftirqd/1121650irq/29-eth0_g0_20:39:391
121440ksoftirqd/1121650irq/29-eth0_g0_20:39:391
121440ksoftirqd/1121650irq/29-eth0_g0_19:12:421
93862430chrt121750irq/30-eth0_g0_20:34:001
121750430irq/30-eth0_g0_1219-21kworker/1:223:42:481
121750430irq/30-eth0_g0_1219-21kworker/1:221:41:121
121650430irq/29-eth0_g0_121ksoftirqd/122:24:500
121430ksoftirqd/1121750irq/30-eth0_g0_22:59:081
121430ksoftirqd/1121750irq/30-eth0_g0_21:31:530
121430ksoftirqd/1121650irq/29-eth0_g0_19:49:361
121750420irq/30-eth0_g0_1219-21kworker/1:223:46:341
121750420irq/30-eth0_g0_1219-21kworker/1:222:14:471
121750420irq/30-eth0_g0_0-21swapper/122:27:151
121420ksoftirqd/1121750irq/30-eth0_g0_23:03:001
121420ksoftirqd/1121650irq/29-eth0_g0_21:53:481
121420ksoftirqd/1121650irq/29-eth0_g0_21:53:481
121420ksoftirqd/1121650irq/29-eth0_g0_20:04:441
121650410irq/29-eth0_g0_31ksoftirqd/023:17:060
121650410irq/29-eth0_g0_13-21kworker/0:121:14:380
121410ksoftirqd/1121750irq/30-eth0_g0_22:19:270
121750400irq/30-eth0_g0_31ksoftirqd/022:29:430
121750400irq/30-eth0_g0_1219-21kworker/1:200:04:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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