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Subject: Re: Build CouchDB process and Erlang HiPE(High Performance Erlang)
From: Adam Kocoloski <kocolosk@apache.org>
In-Reply-To: <CA001051.276D2%damien@apache.org>
Date: Mon, 23 May 2011 16:34:15 -0400
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Message-Id: <702E9678-E4A3-4871-AAD4-FE0D5B1A1714@apache.org>
References: <CA001051.276D2%damien@apache.org>
To: dev@couchdb.apache.org

Cloudant used to run with +native across the board.  It made more =
efficient use of the CPU, but definitely introduced segfaults.  These =
were fixed in R14 [1], but we never tried it again.  Best,

Adam

[1]: https://github.com/erlang/otp/commit/8bbcec

On May 23, 2011, at 4:26 PM, Damien Katz wrote:

> I tried recently compiling everything in src/couchdb with +native. I
> didn't hit stability problems, but everything was significantly =
slower.
> This was a recent Erlang built 64bit erlang on OS X. I think the 32bit
> native might give better results, but it wasn't encouraging.
>=20
>=20
> -Damien
>=20
>=20
>=20
> On 5/23/11 12:21 PM, "Marcos Ortiz" <mlortiz@uci.cu> wrote:
>=20
>> regards,
>> I was reading a great post from Jack Moffit=B4s blog about "Speed Up
>> Ejabberd" and one thing that he told there is the use of the native =
code
>> compiler (HiPE) for CPU hungry modules on this way:
>> cd src/
>> erlc  +native module_code.erl
>>=20
>> Have you tested the CouchDB=B4s source code with HiPE?
>> It would be nice to have these results on any case
>>=20
>> Thanks
>>=20
>> --=20
>> Marcos Lu=EDs Ort=EDz Valmaseda
>> Software Engineer (Large-Scaled Distributed Systems)
>> University of Information Sciences,
>> La Habana, Cuba
>> Linux User # 418229
>> http://about.me/marcosortiz
>>=20
>=20
>=20