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Re: [platform-releng-dev] Ignore all performance results for JDT/Core
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Well, in our case, it rather looks like we take 10% less CPU, and though we
think we do not perform anymore I/O, overall it takes 25% more time to
perform the task.
Mike Wilson
<Mike_Wilson@ca.i
bm.com> To
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Subject
04/25/2005 02:59 Re: [platform-releng-dev] Ignore
PM all performance results for
JDT/Core
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list."
> CPU time says +10%, and the elapsed time says -25%
== The test code did 10% more work, but it finished %25 sooner.
Usually, this means the code spent less time waiting on other code to
finish (or similar synchronization issues).
It's still a good thing, because users care about elapsed time, not how
much CPU it took to compute the answer.
McQ.
Philippe P Mulet <philippe_mulet@xxxxxxxxxx>
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04/25/05 05:43 AM
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Subject
[platform-releng-dev] Ignore all performance results for JDT/Core
Performance results posted on *any* recent build page are completely
inconsistent, and are either exposing missing reference data, or erratic
machine behavior.
The linux results seem a bit more accurate, though the build related tests
were anormally bad in 3.0 reference, and are throwing off the conclusions.
Interestingly, we are seeing some tests where the CPU time says +10%, and
the elapsed time says -25% ! How can ?
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