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2025-04-18 - 16:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

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.

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 10 highest latencies:
System rackeslot4s.osadl.org (updated Fri Apr 18, 2025 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2458630994840,6cyclictest2479531-21cp07:30:011
2458630994644,1cyclictest2727204-21fwupd11:59:441
2458625994440,3cyclictest2727215-21kworker/u8:0+events_unbound12:30:000
2458630994339,3cyclictest2570728-21kworker/u8:2+flush-259:008:55:151
2458634994238,3cyclictest2705842-21kworker/u8:2+flush-259:011:50:012
2458630994036,3cyclictest2682956-21kworker/u8:3+events_unbound11:10:101
2458634993935,3cyclictest2474154-21kworker/u8:0+flush-259:008:00:002
2458638993835,2cyclictest2586143-21kworker/u8:1+flush-259:009:10:203
2458638993833,4cyclictest2618587-21latency_hist09:50:023
2458630993734,2cyclictest2419752-21kworker/u8:1+events_unbound08:10:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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