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

Posted by Alexandru Trandafir Catalin on Server Fault See other posts from Server Fault or by Alexandru Trandafir Catalin
Published on 2012-10-02T10:57:29Z Indexed on 2012/10/02 15:40 UTC
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Filed under:

centos

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ram

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production-environment

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32bit-64bit

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 tried to check the MySQL configuration with mysqltuner.pl and gave me the following messages:

[!!] Switch to 64-bit OS - MySQL cannot currently use all of your RAM
  *** MySQL's maximum memory usage is dangerously high ***
  *** Add RAM before increasing MySQL buffer variables ***

So my question is: can I survive with the 32 bit? Or I will have to install the 64 bit OS?

Thanks.

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