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2026-06-03 - 22:18

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 Wed Jun 03, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1016721690sleep1121650irq/29-eth0_g0_09:14:211
319021550sleep1121650irq/29-eth0_g0_10:56:061
2789421180sleep0121750irq/30-eth0_g0_12:38:320
121900ksoftirqd/1121750irq/30-eth0_g0_07:48:501
121850ksoftirqd/1121750irq/30-eth0_g0_07:34:511
121850ksoftirqd/1121750irq/30-eth0_g0_07:34:511
121840ksoftirqd/1121750irq/30-eth0_g0_07:49:551
214022730chrt121750irq/30-eth0_g0_12:09:561
127052700sleep1121750irq/30-eth0_g0_11:34:521
212072680sleep1121750irq/30-eth0_g0_09:59:331
85722560chrt121750irq/30-eth0_g0_09:05:021
121520ksoftirqd/1121750irq/30-eth0_g0_10:25:411
121520ksoftirqd/1121650irq/29-eth0_g0_11:54:541
121510ksoftirqd/1121750irq/30-eth0_g0_10:32:521
121510ksoftirqd/1121650irq/29-eth0_g0_11:24:050
234222490sleep0121750irq/30-eth0_g0_10:06:530
121490ksoftirqd/1121750irq/30-eth0_g0_10:20:121
121470ksoftirqd/1121750irq/30-eth0_g0_11:46:211
121470ksoftirqd/1121650irq/29-eth0_g0_09:31:500
121460ksoftirqd/1121750irq/30-eth0_g0_10:52:231
121460ksoftirqd/1121750irq/30-eth0_g0_09:50:581
241372450sleep1121750irq/30-eth0_g0_12:22:361
121450ksoftirqd/1121750irq/30-eth0_g0_11:11:451
121450ksoftirqd/1121750irq/30-eth0_g0_10:44:511
121450ksoftirqd/1121750irq/30-eth0_g0_09:43:111
118912450sleep0121750irq/30-eth0_g0_11:32:330
121750440irq/30-eth0_g0_1219-21kworker/1:212:33:551
121650440irq/29-eth0_g0_31ksoftirqd/011:52:060
121650440irq/29-eth0_g0_22318-21open_files07:49:520
121650440irq/29-eth0_g0_13-21kworker/0:110:56:060
121650440irq/29-eth0_g0_121ksoftirqd/110:01:190
121650440irq/29-eth0_g0_121ksoftirqd/109:29:491
121440ksoftirqd/1121650irq/29-eth0_g0_12:17:271
273762430sleep1121750irq/30-eth0_g0_12:34:521
121750430irq/30-eth0_g0_1219-21kworker/1:211:19:041
121750430irq/30-eth0_g0_1219-21kworker/1:210:13:521
121650430irq/29-eth0_g0_13-21kworker/0:111:48:530
121650430irq/29-eth0_g0_11088-21if_eth007:04:460
121430ksoftirqd/1121750irq/30-eth0_g0_11:25:210
121430ksoftirqd/1121750irq/30-eth0_g0_07:22:090
121750420irq/30-eth0_g0_1219-21kworker/1:210:06:141
121750420irq/30-eth0_g0_1219-21kworker/1:209:25:501
121750420irq/30-eth0_g0_1219-21kworker/1:209:22:071
121650420irq/29-eth0_g0_13-21kworker/0:109:47:400
121650420irq/29-eth0_g0_121ksoftirqd/108:14:540
121420ksoftirqd/1121650irq/29-eth0_g0_10:35:351
121420ksoftirqd/1121650irq/29-eth0_g0_08:29:571
121750410irq/30-eth0_g0_19689-21if_err_eth012:04:441
12035994127cyclictest1964-21runrttasks09:02:101
121410ksoftirqd/1121650irq/29-eth0_g0_12:02:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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