32 vs 64 bit

dormando dormando at rydia.net
Sun Sep 16 18:03:52 UTC 2007

(Correct me if this has changed, but I don't believe it has).

I prefer making my mogstored nodes 64-bit. Under a default 32-bit system 
the pagecache is limited to under 800 megabytes, which limits how many 
file objects you can have in cache. With a 64-bit storage node you can 
bulk in the memory and get a lot more performance out of it.

It should be fine to mix 32-bit and 64-bit nodes. Nothing I've found so 
far could cause issues with this.


Lance Reed wrote:
> Apologizes if this topic has already be covered....
> Is there a general consensus about building a MogileFS setup and if the 
> main storage nodes should be 64 bit or not.
> I am specifically planning to build a large setup that will initially 
> have 32 bit clients connecting to the storage setup, however these nodes 
> will eventually be transitioned to 64 bit nodes.  Note sure if this is 
> an issue using MogileFS.  In some distributed FS setups, this is a major 
> concern.
> Thanks in advance for any details.
> Cheers,
> Lance

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