Rule of thumb for servers: use a 64-bit host (PVE for example), and virtualize everything to run under it. Use 32-bit for KVMs unless they need >3G of RAM. OpenVZ contains will of course run 64-bit, as they share the kernel.On 05/31/2013 09:28 AM, keith smith wrote:
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
There are no doubt exceptions to this, but it's a good start.
For a LEMP server, you may want to consider separating EMP into 3 separate hosts. Doing it this way, you could have both a PHP51 host and a PHP53 host (LEMPP?), and let your (E)nginx host determine which one to use based on the url (reverse proxy configuration).
Having things on a virtual platform opens up a lot of possibilities you don't have otherwise. The list is extensive. :)
--
-Eric 'shubes'
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