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2024-11-23 - 16:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack4slot1s.osadl.org (updated Sat Nov 23, 2024 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
485821200,3chrt0-21swapper/112:06:291
485821200,3chrt0-21swapper/112:06:291
348221160,2chrt0-21swapper/012:01:340
348221160,2chrt0-21swapper/012:01:340
25912930,3sleep20-21swapper/212:01:242
25912930,3sleep20-21swapper/212:01:242
83422770,3sleep20-21swapper/207:56:232
83422770,3sleep20-21swapper/207:56:232
314362760,2sleep10-21swapper/107:31:251
273132710,2chrt0-21swapper/211:41:222
138002690,3chrt0-21swapper/212:31:222
138002690,3chrt0-21swapper/212:31:222
209402640,2sleep021111-21grep11:21:230
209402640,2sleep021111-21grep11:21:230
134652640,2chrt0-21swapper/108:11:171
134652640,2chrt0-21swapper/108:11:171
208032590,2sleep10-21swapper/109:56:091
208032590,2sleep10-21swapper/109:56:091
5732540,3sleep20-21swapper/209:01:232
114282540,2chrt11411-21awk12:26:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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