should I go for 64bit version of Fedora 11 ?

[Jatin K]

On 11/04/2009 09:16 AM, Chris Adams wrote:
> Once upon a time, Cameron Simpson<cs at zip.com.au>  said:
>    
>> On 03Nov2009 23:45, Alan Cox<alan at lxorguk.ukuu.org.uk>  wrote:
>> | Such as the kernel ... which is much happier in 64bit mode with over 1GB
>> | of RAM.
>>
>> Is there some URL I could visit that qualifies this?
>>
>> I'm not doubting you, but I would like to have a mental model of roughly
>> why and how 64-bit mode benefits a system.
>>      
> If you have 1G (or really a little less) of physical RAM on 32-bit x86,
> the kernel can map all of it into the kernel's virtual address space.
> Otherwise, it has to use different addressing to access physical
> addresses, IIRC mapping them on demand (which adds overhead).
>
> On a 64-bit system, all of physical memory can be mapped into the kernel
> address space at all times.
>
> Also, x86_64 has a larger CPU register set, which can speed up some
> operations.
>
>    
So according to you .... one must go for 64bit if the hardware is 
capable for it .... is it ????

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   ^ ^  Jatin Khatri

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