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2024-10-13 - 21:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot4s.osadl.org (updated Sun Oct 13, 2024 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2711099178174,3cyclictest0-21swapper/207:10:122
2710899162155,6cyclictest15994-21kthreadcore07:25:211
2710399136122,13cyclictest0-21swapper/007:10:120
875021310,0sleep30-21swapper/311:15:153
2888321240,1sleep3421rcuc/310:35:153
266362117104,10sleep20-21swapper/207:06:222
2475621160,0sleep20-21swapper/211:30:142
26761210794,9sleep30-21swapper/307:07:593
26630210694,9sleep10-21swapper/107:06:171
22168210594,7sleep00-21swapper/007:05:200
27108997166,4cyclictest27234-21apt-get07:10:121
27110996563,1cyclictest0-21swapper/207:25:212
27108995044,4cyclictest28007-21kworker/u16:3+events_unbound11:40:021
27110994843,3cyclictest13647-21kworker/u16:0+events_unbound07:55:502
27110994743,3cyclictest21407-21kworker/u16:1+events_unbound08:50:012
27103994640,4cyclictest28007-21kworker/u16:3+events_unbound10:45:010
27103994540,3cyclictest21407-21kworker/u16:1+events_unbound08:30:130
27110994442,1cyclictest13647-21kworker/u16:0+events_unbound09:35:242
27110994440,3cyclictest13647-21kworker/u16:0+events_unbound11:15:172
27110994440,3cyclictest13647-21kworker/u16:0+events_unbound10:00:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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