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2025-01-25 - 06:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack7slot3s.osadl.org (updated Sat Jan 25, 2025 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6575999428,11cyclictest8150irq/56-dwc_otg_23:04:551
61092890,5sleep0657499cyclictest00:04:190
6574998121,26cyclictest0-21swapper/021:59:510
89922790,5sleep2657699cyclictest20:54:442
113522750,5sleep1657599cyclictest21:54:171
113522750,5sleep1657599cyclictest21:54:171
280452740,5sleep3657799cyclictest21:30:283
657699728,28cyclictest0-21swapper/223:09:502
657499715,42cyclictest9-21ksoftirqd/000:40:130
657499715,42cyclictest9-21ksoftirqd/000:40:130
6574997019,34cyclictest9550irq/48-DMA14:55:080
657599692,9cyclictest5437-21ssh21:44:551
6574996911,38cyclictest0-21swapper/023:54:590
657599683,12cyclictest7950irq/56-dwc_otg20:44:551
657499687,25cyclictest0-21swapper/021:44:580
6575996714,35cyclictest15908-21sh22:45:061
657599668,39cyclictest0-21swapper/123:58:171
137612660,2sleep30-21swapper/322:42:303
6577996527,19cyclictest26230-21/usr/sbin/munin00:34:543
6574996545,4cyclictest25875-21apt-get22:14:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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