64-bit Kernel Question

[Jonathan Kamens]

Adam Williamson wrote:
> Running x86-64 basically uses twice as much RAM for any given workload
> as running x86-32 would.
My company supports over 200 Linux appliances at our customer sites, 
running a mixture of 32-bit and 64-bit.  We're using CentOS 5 rather 
than Fedora, but I doubt that significantly impacts the memory 
footprint.  In our experience, there's about a 50% increase when 
switching to 64-bit.  Certainly, we haven't seen a 100% increase.

  jik