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2026-09-20 - 03:37

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 Sun Sep 20, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211090ksoftirqd/1121750irq/30-eth0_g0_21:22:321
1211000ksoftirqd/1121750irq/30-eth0_g0_20:00:351
271262930sleep0121750irq/30-eth0_g0_22:53:560
121860ksoftirqd/1121750irq/30-eth0_g0_21:58:451
121770ksoftirqd/1121750irq/30-eth0_g0_23:17:011
121770ksoftirqd/1121750irq/30-eth0_g0_23:17:011
27252750sleep1121650irq/29-eth0_g0_21:14:521
317652700sleep0121650irq/29-eth0_g0_23:10:570
121690ksoftirqd/1121750irq/30-eth0_g0_00:07:451
121690ksoftirqd/1121750irq/30-eth0_g0_00:07:451
142292590sleep0121650irq/29-eth0_g0_00:13:100
121530ksoftirqd/1121750irq/30-eth0_g0_22:58:090
121500ksoftirqd/1121750irq/30-eth0_g0_23:42:111
121500ksoftirqd/1121750irq/30-eth0_g0_22:49:551
121500ksoftirqd/1121750irq/30-eth0_g0_00:11:121
121650480irq/29-eth0_g0_20443-21proc_pri22:25:320
121470ksoftirqd/1121750irq/30-eth0_g0_22:31:131
121470ksoftirqd/1121650irq/29-eth0_g0_21:38:440
44172450sleep0121650irq/29-eth0_g0_23:32:500
121750450irq/30-eth0_g0_186542sleep122:20:081
121450ksoftirqd/1121750irq/30-eth0_g0_21:16:101
121650440irq/29-eth0_g0_10201-21timerandwakeup23:55:370
121440ksoftirqd/1121750irq/30-eth0_g0_22:21:331
121750430irq/30-eth0_g0_29947-21chrt23:05:281
121750430irq/30-eth0_g0_1219-21kworker/1:222:50:521
121750430irq/30-eth0_g0_121ksoftirqd/123:01:041
121650430irq/29-eth0_g0_1964-21runrttasks00:26:370
121650430irq/29-eth0_g0_13-21kworker/0:123:52:140
121650430irq/29-eth0_g0_13-21kworker/0:122:32:110
121430ksoftirqd/1121750irq/30-eth0_g0_20:03:570
121430ksoftirqd/1121650irq/29-eth0_g0_23:34:061
121750420irq/30-eth0_g0_121ksoftirqd/100:23:101
121650420irq/29-eth0_g0_31ksoftirqd/023:40:170
121650420irq/29-eth0_g0_121ksoftirqd/121:50:271
121420ksoftirqd/1121650irq/29-eth0_g0_20:20:341
86242410sleep1121750irq/30-eth0_g0_21:37:171
133762410sleep0121650irq/29-eth0_g0_21:55:380
121750410irq/30-eth0_g0_121ksoftirqd/100:25:321
121650410irq/29-eth0_g0_62572sleep121:28:141
121650410irq/29-eth0_g0_31ksoftirqd/022:36:160
121650410irq/29-eth0_g0_31ksoftirqd/000:33:120
121650410irq/29-eth0_g0_13-21kworker/0:123:17:480
121650410irq/29-eth0_g0_13-21kworker/0:123:17:480
121650410irq/29-eth0_g0_13-21kworker/0:123:02:370
121410ksoftirqd/1121750irq/30-eth0_g0_00:23:380
121410ksoftirqd/1121650irq/29-eth0_g0_23:10:040
121410ksoftirqd/1121650irq/29-eth0_g0_21:30:351
336299401cyclictest18797-21chrt20:05:351
121750400irq/30-eth0_g0_31458-21proc_pri23:10:331
121750400irq/30-eth0_g0_2951-21awk19:00:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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