[Lustre-discuss] mds and ost question on older hardware

[Brian J. Murrell]

On Mon, 2009-08-31 at 10:50 -0400, Mag Gam wrote:
> Would running an MDS and OST on a 32bit hardware hamper any
> performance or scalability?

Possibly.  Depending on load.

>  These boxes all have 4GB of memory.

A 32-bit kernel can only access the first GB of memory or so.  The other
3GB would be unused by a Lustre OSS or MDS.  So if load demanded more
than 1GB of memory you really need to go to 64-bit to escape the 1GB
memory limitation.

b.

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