Memory usage for AMD64

Ruslan Ermilov ru at
Fri May 27 01:03:12 PDT 2005

On Thu, May 26, 2005 at 11:44:48PM -0400, Francisco Reyes wrote:
> Is the memory usage on AMD64 comparable to i386?
> A current i386 machine that I plan to replace is using less than 128MB of 
> RAM out of the 256MB installed. The swap is less than 500K. The only 
> processes are SSH, postfix and samba.
> Will an AMD64 setup be in the same memory usage range? Under 128MB.
> I am planning on getting 256MB anyways, but want to make sure that AMD64 
> doesn't have a bigger memory footprint for the OS and that apps don't use 
> significantly more memory when compiled under AMD64.
I'd estimate it's 1.5-2 times more on AMD64 than on i386.  At least
simple tesing of binary sizes and memory sizes of simple progs shows
the difference in this range.

Ruslan Ermilov
ru at
FreeBSD committer
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url :

More information about the freebsd-amd64 mailing list