-5
votes
1answer
78 views

Why is a 32bit OS limited to 4 GigaBytes of RAM? [closed]

What I don't understand is where the 4 GigaBytes comes from. Most of the articles I read say that 2^32bits = 4 GigaBytes, but this doesn't seem correct given that 8 bits = 1 byte. For a 32 bit OS: ...
6
votes
3answers
1k views

Should I reinstall my production server from 32 bit to 64 bit if it has 16GB of RAM?

I have a production server with 16GB of RAM that came with a 32bit CentOs installation. The website hosted on this server is increasing its traffic every day and I am having some MySQL trouble so I ...
1
vote
3answers
130 views

More memory consumption from 32-bit to 64-bit?

When moving from a 32-bit to a 64-bit server, will apps take more memory on 64-bit machines because of the increased dataspace?
1
vote
4answers
834 views

Why does a 32-bit server support 32GB RAM?

I just got an old IBM x445 with 4xXeon and 32GB RAM home. I happily put in Win2008R2 DVD but got a bit surprised when it said the system only has 32-bit CPU. A quick Google confirms that. What does a ...
3
votes
1answer
423 views

Linux: 64 bit VS 32 bit on server for web-app

I want to choose distribution version of server on VDS\Cloud. I choosing between 32-bit and 64-bit. From one side, server with 64-bit OS faster than same server with 32-bit OS (is it true?). From ...
6
votes
2answers
21k views

x64 Windows reports 32GB RAM usable out of 64GB RAM installed - why?

I've got a server with 64GB RAM installed (reported in both the bios and in Windows), but the system information from control panel displays the fact that only 32GB of this is usable. I've only ever ...
1
vote
3answers
4k views

What is the maximum memory a process (MySQL) can consume on a 32-bit OS?

I have MySQL running on a 32-bit RHEL box. The server itself has 4GB total memory with 2GB allocated to MySQL. I would like to know the max amount of memory I can put in the box and how much of that ...
2
votes
4answers
1k views

More than 4Gb memory on MS SQL

We have a Database running on MS SQL 2005. We have a bit of a memory problem on that server. We want to up the memory to 8GB but it is running on a Server 2003 R2 standard edition OS. Will it be ...