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2025-10-24 - 06:55

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 Thu Oct 23, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211270ksoftirqd/1121550irq/30-eth0_g0_00:11:521
121820ksoftirqd/1121550irq/30-eth0_g0_00:15:461
121820ksoftirqd/1121550irq/30-eth0_g0_00:15:461
121790ksoftirqd/1121550irq/30-eth0_g0_19:54:260
121790ksoftirqd/1121550irq/30-eth0_g0_19:54:260
187712670sleep1121450irq/29-eth0_g0_22:20:391
121630ksoftirqd/1121550irq/30-eth0_g0_22:59:420
183752560sleep1121450irq/29-eth0_g0_00:32:081
172052560sleep0121550irq/30-eth0_g0_00:27:480
121520ksoftirqd/1121550irq/30-eth0_g0_23:40:541
121450510irq/29-eth0_g0_31ksoftirqd/000:35:110
105072500chrt121550irq/30-eth0_g0_19:35:121
121490ksoftirqd/1121550irq/30-eth0_g0_23:02:361
121490ksoftirqd/1121550irq/30-eth0_g0_22:25:101
66312480chrt121550irq/30-eth0_g0_21:32:041
121450470irq/29-eth0_g0_13-21kworker/0:122:11:030
121470ksoftirqd/1121450irq/29-eth0_g0_19:18:281
224202460chrt121450irq/29-eth0_g0_22:35:191
121450460irq/29-eth0_g0_13-21kworker/0:123:09:490
121460ksoftirqd/1121450irq/29-eth0_g0_22:14:161
121460ksoftirqd/1121450irq/29-eth0_g0_19:45:051
121450450irq/29-eth0_g0_31ksoftirqd/022:53:250
121450ksoftirqd/1121450irq/29-eth0_g0_21:17:371
66952440sleep0121450irq/29-eth0_g0_21:32:490
121450440irq/29-eth0_g0_121ksoftirqd/120:02:400
121440ksoftirqd/1121450irq/29-eth0_g0_22:50:111
121550430irq/30-eth0_g0_1221-21kworker/1:222:17:221
121550430irq/30-eth0_g0_1221-21kworker/1:222:17:221
121550430irq/30-eth0_g0_1221-21kworker/1:221:54:431
121450430irq/29-eth0_g0_31ksoftirqd/022:19:060
121450430irq/29-eth0_g0_31ksoftirqd/022:19:060
121450430irq/29-eth0_g0_31ksoftirqd/022:01:350
121450430irq/29-eth0_g0_13-21kworker/0:122:07:220
121450430irq/29-eth0_g0_121ksoftirqd/123:48:390
121450430irq/29-eth0_g0_121ksoftirqd/121:22:340
121450430irq/29-eth0_g0_121ksoftirqd/100:16:190
121450430irq/29-eth0_g0_121ksoftirqd/100:16:190
121430ksoftirqd/1121450irq/29-eth0_g0_19:12:191
121550420irq/30-eth0_g0_1221-21kworker/1:223:16:391
121450420irq/29-eth0_g0_31ksoftirqd/020:50:060
121420ksoftirqd/1121550irq/30-eth0_g0_23:20:171
121420ksoftirqd/1121550irq/30-eth0_g0_23:20:171
121420ksoftirqd/1121450irq/29-eth0_g0_22:30:141
121450410irq/29-eth0_g0_31ksoftirqd/021:12:030
121450410irq/29-eth0_g0_31ksoftirqd/000:33:070
121450410irq/29-eth0_g0_13-21kworker/0:123:29:490
121450410irq/29-eth0_g0_13-21kworker/0:121:59:230
121450410irq/29-eth0_g0_13-21kworker/0:121:15:090
121450410irq/29-eth0_g0_121ksoftirqd/122:30:530
121450410irq/29-eth0_g0_121ksoftirqd/119:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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