32bit vs 64bit Linux

Fri May 31 11:39:46 MST 2013

Lisa, what I was referring to specifically is 'Red Hat Enterprise Linux 
Server release 6.4 (Santiago)' (from /etc/issue) 

Those boxes '64-bit' boxes were unable to run 32-bit applications until I 
installed the 32-bit libraries.
They technically were 'pure 64' until I 'fixed' them by installing such 
libraries...   :-)
ET 

Lisa Kachold writes: 

> This is patently incorrect: 
> 
> On Fri, May 31, 2013 at 10:44 AM, kitepilot at kitepilot.com <
> kitepilot at kitepilot.com> wrote: 
> 
>> Yes, you can get 'pure 64' systems (think Red Hat).
>> And you can 'fix them' by installing the hybrid 32-bit libraries, but I'd
>> rather stay away from it.
>> ET 
>>
> 
> CentOs 6 using regular repo used both 32bit and 64 bit libraries -
> seamlessly. 
> 
> There is no reason to "fix" anything in modern linux distributions. 
> 
> There once was, however this is no longer a factor. 
> 
>>
>> Nathan England writes: 
>>
>>> 
>>>
>>> I'll expand *your* question!
>>> Are there any *pure* 64-bit OS options out there? Beyond a linux from
>>> scratch build, which I have currently that is still pure 64-bit, what is
>>> there?
>>> every distro I know of has 32-bit libraries band-aided on to make some
>>> 32-bit that refuses to die run.
>>> Nathan 
>>>
>>>
>>> On Friday, May 31, 2013 13:32:55 kitepilot at kitepilot.com wrote: 
>>>
>>>> Well, I'll expand the question...
>>>> Performance and memory access considerations aside, the reason why I have
>>>> always 'gone 32' is because applications availability.  Back when, flash
>>>> was
>>>> the limiting factor because it was a PAIN to run it in 64 bits (if at all
>>>> possible).
>>>> And some other things...
>>>> For years, I've been lazily sticking to 32 bits to avoid potentially
>>>> problematic issues.  Now, if that landscape has changed, and
>>>> application-wise 32 and 64 bits are irrelevant, I'd certainly like to
>>>> convert to 64.
>>>> Question is (again, performance and memory access considerations aside):
>>>> What are the potential problems of running on a pure 64 environment for
>>>> as
>>>> long as you stick to apt-get (or yum)?
>>>> ET
>>>> keith smith writes:
>>>> > Hi,
>>>> > > Even though I have 64bit hardware I always install the 32bit version
>>>> of
>>>> > Linux.  I do so because of the past discussions on this list that made
>>>> me
>>>> > believe the 32bit OS was better because 64bit caching is actually
>>>> slower
>>>> > due to the requirement that the cache be filled to a certain point
>>>> before
>>>> > it is moved.   I think I recall something about the amount of RAM
>>>> having
>>>> > some effect here also.
>>>> > > Using a 32bit version over a 64bit version seems counter intuitive,
>>>> > however that is what I have taken away from these conversations about
>>>> > 32bit vs 64bit Linux.
>>>> > > I'm using CentOS 6.x on a LAMP server that gets a low amount of
>>>> traffic.  > However I may make the jump to Linux on my desktop this summer.
>>>> (this
>>>> > will be my 3rd attempt to become M$ free except one VM so I can use IE
>>>> > for testing) I think all of my hardware is 64bit.  > > So that begs
>>>> the question, is 32bit better than 64bit or do I not
>>>> > understand the issue?
>>>> > > Thank you for your feedback.
>>>> > > Keith
>>>> > > ------------------------
>>>> > > Keith Smith
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>>> -- 
>>>
>>> Regards,
>>> Nathan England
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~**~~~~~~~~~~~
>>> NME Computer Services http://www.nmecs.com
>>> Nathan England (nathan at nmecs.com)
>>> Systems Administration / Web Application Development
>>> Information Security Consulting
>>> (480) 559.9681 
>>>
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