Am Sat, 10 Nov 2012 18:28:14 +0000 schrieb Steve McIntyre <steve@einval.com>: > Adam Borowski wrote: > >On Fri, Nov 09, 2012 at 11:27:20PM +0100, Marco d'Itri wrote: > >> On Nov 09, Daniel Schepler <dschepler@gmail.com> wrote: > >> > >> > I've asked a couple people in private mail about this, and > >> > haven't gotten any answer, so I thought I'd ask here for ideas. > >> > Where would be a good place to upload what I have so far from > >> > bootstrapping an x32 port of Debian? > >> Nowhere, until we decide if and how we want to use x32. > >> IIRC there was some agreement that if we decide to support x32 it > >> should be as a partial architecture. > > > >That'd make it mostly worthless. If you need to co-install amd64 > >packages on the same system (but not physical machine!), memory > >gains are gone. > > > >On the other hand, x32 can be pretty nice in, for example, vserver > >situations: you have tens of fast CPU- and memory-efficient vservers > >while you have an option of adding an amd64 one. > > > >So, x32 would need to have all of the userspace. Using an amd64 > >kernel is no different from an i386 system: currently done via a > >duplicate package, could be done via a minimal use of multiarch. If > >this is what you mean by "partial architecture", then we're not in > >disagreement. > > > >Speed gains are far better than armel->armhf, at least for i386. > >Gains compared to amd64 are limited to pointer-heavy code, said to > >be up to 30%. If Daniel could upload his work somewhere, we'd be > >able to test this ourselves instead of relying on some random > >benchmarks. > > *If* we want to include x32, it's worth describing it and > understanding the potential benefits properly and getting some > benchmarks. There's been some work in Ubuntu on the benchmarking front > (as I saw mentioned in a session at UDS last week[1]), which should be > worth looking at. Hmmm, can't find any direct links to them, > though. :-( Maybe somebody else can fill in here? Not from the UDS but gives also some further information what x32 is and where the difference to i386 and x86-64 are: http://www.linuxplumbersconf.net/2011/ocw//system/presentations/531/original/x32-LPC-2011-0906.pptx > > [...] > -- Andreas Rütten AndreasRuetten@gmx.de 4096R: 0x6C9DFFB2 / 8394 99DA 59BD BCE2 3FC8 3A9E 6633 0089 6C9D FFB2
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