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2026-09-01 - 04:21

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 Sep 01, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211060ksoftirqd/1121750irq/30-eth0_g0_23:13:441
276562740sleep0121650irq/29-eth0_g0_23:06:200
121660ksoftirqd/1121750irq/30-eth0_g0_00:21:250
254112650sleep0121650irq/29-eth0_g0_22:57:470
121590ksoftirqd/1121750irq/30-eth0_g0_22:09:031
121570ksoftirqd/1121750irq/30-eth0_g0_22:47:331
121570ksoftirqd/1120512sleep000:19:580
42862500sleep1121750irq/30-eth0_g0_23:45:591
121490ksoftirqd/1121750irq/30-eth0_g0_23:29:471
121480ksoftirqd/1121750irq/30-eth0_g0_23:47:411
121650470irq/29-eth0_g0_31ksoftirqd/019:01:140
121460ksoftirqd/1121650irq/29-eth0_g0_22:59:401
121750450irq/30-eth0_g0_1219-21kworker/1:221:34:321
121650450irq/29-eth0_g0_19085-21grep22:31:210
121450ksoftirqd/1121750irq/30-eth0_g0_21:14:591
121450ksoftirqd/1121650irq/29-eth0_g0_23:21:101
121750440irq/30-eth0_g0_1219-21kworker/1:221:51:221
121650440irq/29-eth0_g0_0-21swapper/020:35:590
121440ksoftirqd/1121650irq/29-eth0_g0_23:19:271
121650430irq/29-eth0_g0_31ksoftirqd/021:30:070
121650430irq/29-eth0_g0_13-21kworker/0:123:45:590
121650430irq/29-eth0_g0_121ksoftirqd/119:55:581
121650430irq/29-eth0_g0_121ksoftirqd/119:55:581
121430ksoftirqd/1121750irq/30-eth0_g0_21:09:440
121430ksoftirqd/1121650irq/29-eth0_g0_23:01:171
121430ksoftirqd/1121650irq/29-eth0_g0_22:23:401
34372420sleep1121750irq/30-eth0_g0_19:16:131
34372420sleep1121750irq/30-eth0_g0_19:16:131
121750420irq/30-eth0_g0_1219-21kworker/1:221:22:461
121750420irq/30-eth0_g0_1219-21kworker/1:200:35:401
121750420irq/30-eth0_g0_1219-21kworker/1:200:16:521
121650420irq/29-eth0_g0_31ksoftirqd/022:11:130
121650420irq/29-eth0_g0_13-21kworker/0:122:06:040
121650420irq/29-eth0_g0_13-21kworker/0:121:42:170
121650420irq/29-eth0_g0_121ksoftirqd/120:46:091
121420ksoftirqd/1121650irq/29-eth0_g0_20:55:461
56999411cyclictest29948-21diskmemload22:28:241
121650410irq/29-eth0_g0_31ksoftirqd/023:36:030
121650410irq/29-eth0_g0_31ksoftirqd/022:26:250
121650410irq/29-eth0_g0_31ksoftirqd/021:54:140
121650410irq/29-eth0_g0_19959-21memory22:36:130
121650410irq/29-eth0_g0_1964-21runrttasks00:09:580
121650410irq/29-eth0_g0_13-21kworker/0:123:30:150
121650410irq/29-eth0_g0_13-21kworker/0:122:49:180
121650410irq/29-eth0_g0_13-21kworker/0:122:24:460
121650410irq/29-eth0_g0_13-21kworker/0:100:01:110
121410ksoftirqd/1121750irq/30-eth0_g0_22:04:000
121410ksoftirqd/1121750irq/30-eth0_g0_21:46:200
121410ksoftirqd/1121750irq/30-eth0_g0_21:46:200
121410ksoftirqd/1121650irq/29-eth0_g0_00:23:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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