Atom optimization

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Chih-Wei Huang

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Sep 14, 2010, 1:28:13 AM9/14/10
to Android-x86
Hi,
I have back-ported Intel's Dalvik Atom bytecode optimization
to froyo-x86 from the master branch. To build it, specify
TARGET_ARCH_VARIANT=x86-atom, like

$ make -jX iso_img TARGET_ARCH_VARIANT=x86-atom

It enables:
* SSE2, SSSE3 optimization (for memcpy, strcmp, ...) in bionic.
* Atom fast byte-code interpreter engine in dalvik.

The improvement is not very significant as expected,
but is better than nothing... :p
(check my blog for benchmark results)

Note the optimized image can only run on
an atom CPU machine (core i series is ok).
It cannot be used on older EeePC models
with Celeron M CPU (like 701, 900).

--
Chih-Wei
Android-x86 project
http://www.android-x86.org
http://cwhuang.info

l2gb...@gmail.com

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Sep 14, 2010, 1:31:13 AM9/14/10
to andro...@googlegroups.com
Hello are you located in China and also do you work for a company or do you do this free lance personal hobby?
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AvengerMoJo

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Sep 26, 2010, 3:54:12 AM9/26/10
to Android-x86
Which branch should I check out your update to get this variant
working? Thanks

AvengerMoJo

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Sep 26, 2010, 12:29:09 PM9/26/10
to Android-x86
http://git.android-x86.org/?p=platform/build.git;a=patch;h=8b9685abc616f539527bff4bc31afbd876c4ce3d

I see the atom flag patch in the above link however the variant check
does not include such a choice. May be I'm missing something?

AvengerMoJo

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Sep 26, 2010, 12:44:30 PM9/26/10
to Android-x86
Sorry guys, miss read the TARGET_ARCH_VARIANT as TARGET_BUILD_VARIANT

On 9月27日, 上午12时29分, AvengerMoJo <avengerm...@gmail.com> wrote:
> http://git.android-x86.org/?p=platform/build.git;a=patch;h=8b9685abc6...
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