On Tue, 14 May 2013 12:25:33 -0500, 12 said: > s better performance in most cases, at the cost of flexibility in the mappings, > because little space is left to map potentially enormous amounts of physical memory. If most of the memory is used to map lots and lots of 1-2G userspace processes, this isn't actually a problem. Anyhow, it's *long* been known that if you have much more than 4G of RAM, you should just run an x86_64 kernel that doesn't have the 896M problem instead of trying to use PAE to do it. The number of boxes out there that have over 4G of RAM and don't do 64-bit is small, and dropping.
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