Performance patch for AIX system api support of sun.nio.ch.FileChannelImpl.transferTo0()

[Charles Lee]

On 10/19/2011 06:25 PM, Alan Bateman wrote:
> Charles Lee wrote:
>> :
>>
>>
>> Hi Alan,
>>
>> Are there any examples of the performance test cases?
> The tests in the jdk repository are regression tests (many unit tests 
> too). It's not really suitable for performance tests as performance 
> tests need carefully controlled environments in other to detect 
> performance regressions. If we run performance tests that fail if the 
> performance is lower that expected then those tests will likely fail 
> regularly.  For example if you run the tests via the Makefile and use 
> --jobs then there are tests running concurrently with unpredictable 
> load. So we (in Oracle anyway) haven't been pushing performance tests 
> to the jdk repository. There are exceptions so if you look around you 
> will see some tests. 
> jdk/test/java/nio/channels/Selector/LotsOfCancels.java is one example 
> but if you look closely it doesn't have an @test tag so it's not run 
> automatically.
>
> -Alan
Thanks Alan. Any requirements for performance patches to contribute? 
Test case? Test result?

-- 
Yours Charles

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