Re: Where could I upload x32 port bootstrap?
On Sun, 11 Nov 2012, Ben Hutchings wrote:
> On Sat, 2012-11-10 at 20:14 -0200, Henrique de Moraes Holschuh wrote:
> > On Sat, 10 Nov 2012, Bastian Blank wrote:
> > > On Sat, Nov 10, 2012 at 02:15:14PM -0200, Henrique de Moraes Holschuh wrote:
> > > > Yes, I know :) Our amavisd-box at work has 16GiB RAM and 16 cores,
> > > > we need at least that much to be able to run 64 instances with the
> > > > scratch directories on tmpfs...
> > > > x32 would be most likely a _MAJOR_ win for that box.
> > >
> > > Is it _likely_ or is it? 16GiB can be used with the 32bit i386 also.
> > I assume you mean a amd64-kernel with i386 userspace combination.
> > Compared to x32, i*86 userspace on a 64-bit kernel has the added aggravation
> > of the full kernel syscall compat layer, which has been a source of problems
> > in the past, and all the wasted performance of our i486-optimized userland.
> The compat layer for x32 is almost entirely the same as for i386 on
> x86_64; indeed it is almost entirely the same as Linux uses for *every*
> 64-bit architecture that supports a 32-bit userland. I think the only
> interesting difference is that x32 has 64-bit time_t.
It has changed, then... I thought it used the 64-bit syscalls plus ~84 that
were x32-specific, while ia32 had to go through compat for all syscalls...
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