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Re: Hardware donation



On Wed, Jun 11, 2003 at 07:54:00PM -0400, Christian T. Steigies wrote:
> On Thu, Jun 12, 2003 at 01:28:33AM +0200, Michael Banck wrote:

> athlon:
> Build needed 01:28:10, 3526956k disk space

> amd64: 10 minutes? 5?

Nah, I don't think the speed difference between similarly clocked
Athlon (32) and Opteron is that big a step.

>> BTW: The partition limit on GNU/Hurd is 2GB - and there is a buildd
>> running usually, too. Well, at least it pretends to :)

> I have a 40GB partition on the athlon, I wouldn't expect a limit on
> amd64 then?

No, the limit comes from the way the Hurd ext2fs translator (think
"the Hurd ext2 filesystem implementation") works: It is a normal,
non-privileged process, and it maps the whole partition (the
/dev/hdXsY file) into its virtual memory space. Which fails if there
isn't enough virtual memory space, like on 32 bit machines with
current HD's. It is currently being re-implemented to use a caching
strategy instead, I believe.

As long as you are using Linux, you won't have such limitations
cropping up from new architectures (but others may, wrt to page size,
I think the Linux ext2 code cannot handle block sizes bigger than page
size or something like that. But I wouldn't expect new architectures
to have smaller page sizes than old one.).

-- 
Lionel

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