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2024-06-17 - 16:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack9slot5s.osadl.org (updated Mon Jun 17, 2024 00:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2187199170,4rtkit-daemon21201-21xpra19:06:370
5759991312,1cyclictest68350irq/133-lan21:25:361
5759991212,0cyclictest68350irq/133-lan20:56:451
5759991211,1cyclictest68350irq/133-lan23:55:181
5759991211,1cyclictest68350irq/133-lan23:41:481
5759991211,1cyclictest68350irq/133-lan23:02:201
5759991211,1cyclictest68350irq/133-lan22:36:311
5759991211,1cyclictest68350irq/133-lan22:07:131
5759991211,1cyclictest68350irq/133-lan21:35:141
5759991211,1cyclictest68350irq/133-lan20:34:081
5759991211,1cyclictest68350irq/133-lan00:25:221
5759991211,1cyclictest68350irq/133-lan00:14:091
2187199120,1rtkit-daemon21870-21rtkit-daemon22:53:301
2187199120,1rtkit-daemon21870-21rtkit-daemon22:49:301
2187199120,1rtkit-daemon21870-21rtkit-daemon22:41:561
2187199120,1rtkit-daemon21870-21rtkit-daemon20:54:460
2187199120,1rtkit-daemon21870-21rtkit-daemon20:17:030
2187199120,1rtkit-daemon21870-21rtkit-daemon20:10:570
5759991111,0cyclictest68350irq/133-lan23:35:241
5759991111,0cyclictest68350irq/133-lan23:27:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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