Re: Swapping for diskless nodes

[Alan Cox]

> the memory of a fast server could have much less latency that writing 
> that page out to a local old, slow IDE disk. Clusters could even have
> special high-bandwidth, low latency networks that could be used for
> remote paging.
> 
> In a perfect world, all nodes in a cluster would be able to dynamically 
> share a pool of "cluster swap" space, so any locally available swap that
> is not used could be utilized by other nodes in the cluster.

That I think is a 2.5 problem. One thing that has been talked about several
times now is removing all the swap special case crap from the mm and making
swap a file system. That removes special cases and means anyone can write
or use custom, or multiple swap filesystems, in theory including things like
swap over a shared GFS pool

But its not for 2.4, no way

Alan