Re: >4GB ram. Is there a simple solution? - Bitmuncher - com.mysql.lists.cluster

7 messages in com.mysql.lists.clusterRe: >4GB ram. Is there a simple solut...

From	Sent On	Attachments
Apostolos Pantsiopoulos	21 Aug 2006 14:40
Stewart Smith	21 Aug 2006 20:26
Paul Maunders	22 Aug 2006 01:21
Brendan Bouffler	22 Aug 2006 16:25
Bitmuncher	22 Aug 2006 17:23
Simon Garner	22 Aug 2006 21:08
Bitmuncher	23 Aug 2006 06:16

Subject:	Re: >4GB ram. Is there a simple solution?
From:	Bitmuncher (bitm...@bitmuncher.de)
Date:	08/23/2006 06:16:15 AM
List:	com.mysql.lists.cluster

Ok, there are some broken BIOS, but I don't know any server hardware with this problem. Mostly this is a problem with PC hardware and in my opinion PC hardware is not useful for a cluster of a size wich depends on >4GB RAM.

Frank.

On 23/08/2006 12:24 p.m., Bitmuncher wrote:

It depends on your operating system. If you have a system, that support

4GB RAM, MySQL can use >4GB RAM without problems.

Regards, Frank.

Pretty much any newish Linux distro will support 4GB+ RAM. However not all BIOS/chipsets support 4GB RAM.

I have a bunch of Intel P4 servers here which only support 3GB RAM as they have no solution for the PCI memory hole, despite being advertised as supporting "4GB" RAM. I put 4GB RAM in them and the system only saw 3GB at POST (before the OS even loaded).

Most Opteron and Xeon chipsets will support 4GB+ RAM, but with older P4 or Athlon systems you need to be careful.

Google "pci memory hole" for more info.

-Simon