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2025-05-05 - 00:48

OSADL QA Farm on Real-time of Mainline Linux

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

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.
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 rackfslot7s.osadl.org (updated Sun May 04, 2025 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
287154299358412,3567cyclictest2957094-21kworker/2:0+events00:20:202
287154299305514,3036cyclictest2913530-21kworker/2:2+events21:30:222
287154299292514,2907cyclictest2913530-21kworker/2:2+events21:25:192
287153999285113,2834cyclictest2976327-21kworker/1:1+events00:35:011
287154299271013,2695cyclictest2943757-21kworker/2:0+events23:05:022
287154299269513,2678cyclictest2957094-21kworker/2:0+events00:05:232
287153999269311,2677cyclictest2900594-21kworker/1:1+events20:45:251
287154499266013,2645cyclictest2963783-21kworker/3:1+events00:05:013
287154499263013,2613cyclictest2938982-21kworker/3:0+events22:40:323
287153599262513,2608cyclictest2872761-21kworker/0:2+events19:25:200
287153599260712,2591cyclictest2887564-21kworker/0:2+events19:57:060
287153599256812,2552cyclictest2966735-21kworker/0:2+events00:03:070
287153999255212,2537cyclictest2960323-21kworker/1:2+events23:45:181
287153999254311,2528cyclictest2935506-21kworker/1:1+events22:28:001
287153999252512,2509cyclictest2958458-21kworker/1:1+events23:53:381
287154499252412,2509cyclictest2886112-21kworker/3:0+events19:53:123
287153599252011,2507cyclictest2974579-21kworker/0:0+events00:30:010
287153599251211,2497cyclictest2887564-21kworker/0:2+events20:04:500
287153999250212,2487cyclictest2948907-21kworker/1:1+events23:29:171
287154499249512,2479cyclictest2908664-21kworker/3:1+events21:05:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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