Andrei Dorofeev wrote:
Hi Roland,
I didn't try this on a laptop, but here are some numbers from a 2-way
AMD system running in 64-bit mode showing how much memory gets used by
the
kernel in each case.
NCPU max_ncpus kernel
64 2 227MB
21 21 231MB - stock Nevada bits
64 32 233MB
64 64 242MB
So if max_ncpus is set to 64, we'd be throwing away 10Mb (or ~5% of
all memory on a 256Mb laptop). The difference between 21 and 32 is
much
smaller.
Are 256Mb laptops a serious concern these days? If so, can you
differentiate between 32 and 64 bit kernels? I'm sure no one will have
as little as 256Mb in a 64bit laptop.
Ian
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