harmony-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Alexei Fedotov <alexei.fedo...@gmail.com>
Subject Re: Is it important to improve optimizations of Harmony's JIT compiler?
Date Wed, 20 May 2009 05:46:33 GMT
Hello Egor,
Since we get Intel software partnership, we can request an access to
the performance lab at Intel in Nizhny. They provide a computer,
software and a specialist for a week.

We may ask Vadim Sukhomlinov if any possibilities exist to optimize
code from Moscow.
Thanks.


And btw, yes. I have an account on Alexey's home server. ;-)




On Tue, May 19, 2009 at 9:31 PM, Egor Pasko <egor.pasko@gmail.com> wrote:
> On the 0x5AF day of Apache Harmony niejiutao@gmail.com wrote:
>> Hi all,
>>
>> I'm interested in compiler optimizations and have some thoughts on
>> improving the IR and optimizations of Jitrino.OPT.  However, it seems
>> that the development on Jitrino.OPT is not very active (only 617 lines
>> of changes of source code in the past five months), so I wonder whether
>> improving the optimizations of JIT compiler is important for Harmony
>> community.  If it's not, why? (Note that Harmony is not very competitive
>> to other JVMs on performance, http://www.stefankrause.net/wp/?p=9)  If
>> it is, are there any existing plans or any people working on this?
>
> The biggest problem with JIT performance improvements that I do not
> know how to deal with now is the need of a good performance lab.
>
> This means a diverse pool of high-end machines and specific profiling
> software. Add to this at least one of those performance experts (aka
> men in black) who make a fair time commitment for spotting
> bottlenecks, catching regressions, maintaining the lab.
>
> Measuring performance on a random laptop just does not work.
>
> I recall Alexey Shipilev had thoughts of setting up a lab like this
> (at home?:), but I did not hear the status from him for quite a while.
>
> --
> Egor Pasko
>
>



-- 
With best regards / с наилучшими пожеланиями,
Alexei Fedotov / Алексей Федотов,
http://www.telecom-express.ru/
http://harmony.apache.org/
http://code.google.com/p/openmeetings/

Mime
View raw message