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Re: 4G/4G kernel patch dropped



On Tue, 2005-01-04 at 04:11 -0800, Kenneth Porter wrote:
> I just saw the announcement of a new Fedora kernel with this change note:
> 
> > A large change over previous kernels has been made. The 4G:4G memory
> > split patch has been dropped, and Fedora kernels now revert back to
> > the upstream 3G:1G kernel/userspace split.
> 
> A bit of googling indicates that the 4G:4G patch is needed for systems with 
> a lot of RAM (eg. 32 GB or more)

and for people with less ram but who want to run java with lots of
threads... in that case you care a lot about the extra 1Gb of userspace
address space. Even with a moderate amount of threads this makes the
java garbage collector run less frequently -> nicer performance ;)

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