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2024-07-25 - 05:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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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Click here to display the system's profile data or here to proceed to next system.
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.
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 rack9slot4s (updated Thu Jul 25, 2024 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244259911021072,24cyclictest28859-21sed19:35:011
239402517470,32sleep00-21swapper/019:20:300
239432468370,31sleep10-21swapper/119:20:301
2442499184161,20cyclictest0-21swapper/019:35:010
78552770,3sleep0111rcuc/022:55:220
2442599762,36cyclictest5919-21df21:25:111
2442599722,38cyclictest3843-21fschecks_time22:45:141
2442599721,40cyclictest12631-21chrt21:41:121
2442599712,35cyclictest26379-21chrt20:53:291
2442599711,38cyclictest7601-21cat00:40:241
2442599711,35cyclictest10483-21chrt23:02:311
2442599702,36cyclictest21442-21netstat22:05:241
2442599702,33cyclictest9161-21users20:05:301
2442599701,37cyclictest7576-21fschecks_time22:55:171
2442599701,36cyclictest29654-21chrt22:27:221
2442599701,35cyclictest4329-21chrt00:21:031
2442599701,35cyclictest29752-21chrt19:35:261
2442599701,34cyclictest31119-21chrt23:57:161
2442599701,34cyclictest12246-21chrt23:06:211
2442599693,34cyclictest27012-21memory22:20:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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