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2025-12-24 - 02:50

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 Dec 21, 2025 01:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136921440sleep1121450irq/29-eth0_g0_00:31:111
649621170sleep0121450irq/29-eth0_g0_22:37:460
121830ksoftirqd/1121550irq/30-eth0_g0_19:57:091
196012610sleep0121450irq/29-eth0_g0_21:20:010
196012610sleep0121450irq/29-eth0_g0_21:20:010
269572570sleep0121450irq/29-eth0_g0_21:50:090
121540ksoftirqd/1121550irq/30-eth0_g0_22:12:081
105162520sleep0121550irq/30-eth0_g0_22:55:550
121490ksoftirqd/1121450irq/29-eth0_g0_23:40:201
121480ksoftirqd/1121450irq/29-eth0_g0_00:24:581
307042470sleep1121550irq/30-eth0_g0_22:06:011
284762470sleep1121550irq/30-eth0_g0_19:42:321
121450470irq/29-eth0_g0_121ksoftirqd/121:17:301
121550460irq/30-eth0_g0_121ksoftirqd/122:42:341
121460ksoftirqd/1121550irq/30-eth0_g0_23:21:051
121550450irq/30-eth0_g0_1221-21kworker/1:223:32:221
121450450irq/29-eth0_g0_19849-21unixbench_multi19:07:330
121450450irq/29-eth0_g0_1941-21runrttasks22:27:070
121550440irq/30-eth0_g0_121ksoftirqd/122:53:231
121440ksoftirqd/1121450irq/29-eth0_g0_20:22:241
121550430irq/30-eth0_g0_1221-21kworker/1:223:16:261
121550430irq/30-eth0_g0_1221-21kworker/1:221:41:521
121550430irq/30-eth0_g0_1221-21kworker/1:221:24:121
121550430irq/30-eth0_g0_1221-21kworker/1:221:24:121
121550430irq/30-eth0_g0_0-21swapper/100:24:341
121450430irq/29-eth0_g0_3339-21sed00:37:331
121430ksoftirqd/1121550irq/30-eth0_g0_21:11:481
121430ksoftirqd/1121450irq/29-eth0_g0_23:56:001
121430ksoftirqd/1121450irq/29-eth0_g0_22:19:071
140082420chrt14016-21latency_hist23:09:431
121550420irq/30-eth0_g0_1221-21kworker/1:222:22:301
121550420irq/30-eth0_g0_1221-21kworker/1:221:38:221
121550420irq/30-eth0_g0_121ksoftirqd/100:18:481
121450420irq/29-eth0_g0_31ksoftirqd/023:02:320
121450420irq/29-eth0_g0_1941-21runrttasks20:07:500
121450420irq/29-eth0_g0_13-21kworker/0:122:12:250
121420ksoftirqd/1121550irq/30-eth0_g0_00:39:430
121420ksoftirqd/1121450irq/29-eth0_g0_20:37:251
121550410irq/30-eth0_g0_121ksoftirqd/100:12:281
121450410irq/29-eth0_g0_31ksoftirqd/022:22:270
121450410irq/29-eth0_g0_31ksoftirqd/000:29:290
121450410irq/29-eth0_g0_1941-21runrttasks23:59:050
121450410irq/29-eth0_g0_13-21kworker/0:123:45:530
121450410irq/29-eth0_g0_13-21kworker/0:123:33:390
121450410irq/29-eth0_g0_13-21kworker/0:123:15:170
121450410irq/29-eth0_g0_13-21kworker/0:123:10:570
121450410irq/29-eth0_g0_13-21kworker/0:121:56:280
121450410irq/29-eth0_g0_121ksoftirqd/122:18:540
121410ksoftirqd/1121450irq/29-eth0_g0_19:09:431
121550400irq/30-eth0_g0_30176-21timerandwakeup22:02:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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