John Plocher wrote:
> [Roland and I are bouncing a proposal back and forth...]
>
> Garrett D'Amore wrote:
>> 4) analysis of big-picture performance issues, if any (does 64-bit
>> run faster, or slower? maybe run a some test of boot time analysis.)
>
> IIRC, the SPARC impact was "doesn't run faster" combined with
> "takes more disk space", rather than "runs significantly slower".
>
>> 5) a rough estimate in the increase of the size of the media/miniroot
>> for the SPARC port
>
> While interesting, this is IMO not an architectural issue, not part
> of this case (which isn't proposing to make a complete 64-bit
> miniroot), and with the way we are going with IPS and the size of
> disks (CD, DVD and rust) this is probably not a practical concern
> even if it ends up doubling the size (which I doubt it will).
Point taken. And yes, both of the issues raised above are not strictly
architectural. But if it does have a significant (and "significant" can
vary from one ARC member to the next) increase in size or impact to
performance, then I think we'd like to know about it. Part of my
concern here is that ARC review is really the only way that issues like
this (which may have impact well beyond architecture, and touch a lot of
different projects/consumers) can get published/recorded. CTeam review
is basically "private" to Sun, and AFAIK not published in a way that
others can find it. Doubling the size of the install media
requirements, while not an ARC concern directly, isn't something that
I'd like to see 'hidden' from view. (Honestly, I suspect the increase
in size to be on the order of 20%, and as you noted, probably not a real
cause for concern. You might even be able to stop shipping some 32-bit
private libraries, more analysis would be required.)
That said, certainly addressing the "possible cause for concern" (such
as this) in advance in the case materials, with text like what you
provided above, can't hurt the review, and may shut down objections
before they are raised. Which is also part of the reason why I added it
to the list of things I'd like to see.
FWIW, it sounds like Roland's goals here are worthwhile, and I'd like to
see him succeed on this with a minimum of bruises.
-- Garrett
