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March 2007

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Subject:
Re: Using 64 bit instead 32 bits SL
From:
Brett Viren <[log in to unmask]>
Reply To:
Brett Viren <[log in to unmask]>
Date:
Fri, 23 Mar 2007 09:50:34 -0400
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Johan Mares <[log in to unmask]> writes:

> If you have dual core 64 bits processors in your server. Is it
> recommended to install x86-64 version of a linux distro like SL ?
> What are the benefits ? Are there any disadvantages ? It would be for
> a LAMP, so would Apache or MySQL perform better or wouldn't they make
> no use of it ?
> Does anyone have any experience with this ?

32 bits: more software available, typically proprietary in nature.
Can access only <4GB RAM.

64 bits: ~20% faster floating point (AMD only I believe), can access
more RAM than you can afford.  Potential compilation problems of
legacy code.

-B.

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