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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