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2025-05-15 - 00:05

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 20 highest latencies:
System rack3slot5s.osadl.org (updated Wed May 14, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2110321260sleep1121650irq/29-eth0_g0_09:12:121
2110321260sleep1121650irq/29-eth0_g0_09:12:121
1646321200sleep1121750irq/30-eth0_g0_11:10:021
258362980sleep0121750irq/30-eth0_g0_11:45:530
78652960sleep0121750irq/30-eth0_g0_08:19:590
121870ksoftirqd/1121650irq/29-eth0_g0_10:45:130
121810ksoftirqd/1121750irq/30-eth0_g0_10:59:351
121730ksoftirqd/1121750irq/30-eth0_g0_08:20:201
22602640sleep1121650irq/29-eth0_g0_12:23:591
311392630sleep1121750irq/30-eth0_g0_07:40:311
311392630sleep1121750irq/30-eth0_g0_07:40:311
273422540sleep0121750irq/30-eth0_g0_11:54:110
162472530sleep1121750irq/30-eth0_g0_11:08:251
284422490sleep0121650irq/29-eth0_g0_11:57:420
121490ksoftirqd/1121750irq/30-eth0_g0_12:08:491
121490ksoftirqd/1121750irq/30-eth0_g0_10:13:411
121750480irq/30-eth0_g0_121ksoftirqd/112:35:171
121480ksoftirqd/1121750irq/30-eth0_g0_07:25:111
121750460irq/30-eth0_g0_470-21kworker/1:111:32:561
121750460irq/30-eth0_g0_121ksoftirqd/112:15:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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