On Oct 9, 2006, at 2:51 PM, Daniel Stenning wrote:
I got a 2X speed improvement on my Mac Pro 2.66 Ghz over my old
powerbook
1.5 Gig running a long "batch job" task.
I believe that the real comparisons should be between your PPC
version running on an Intel system under Rosetta and that same app
compiled as UB running on the same system in native Intel mode.
That's where most are seeing improvements. As for claims of 2x or
10x, that's something that will vary from system to system depending
on what OTHER things you have running. Don't forget that OS X is not
like OS 9 in that even if you think that your app is the only thing
running, there can be dozens of others things running that you aren't
directly aware of. As for a 2x improvement, that IS a very big
increase - what used to take 2 hours now takes 1. If I could chop
any of my daily tasks in half, I'd have more time to play guitar :).
If you're comparing PPC to Intel from the perspective of general
machine performance, the new Intel's are recognizably faster at I/O
operations and hardware level performance. Do graphics apps move
faster? I've run some simple core graphics tests that are faster on
the Intel and others that win on the PPC (probably altavec
specific). Does Pages run faster? Yes.
However, what's the big question here?
Is RB 2006r4 generating code that compares with RB 5.5?
Is the Intel Mac better than the PPC Mac?
Are UB apps really worth the effort on Intel systems?
On the first question, most will agree that the code created by 5.x
is more compact and in some cases faster than the same project
compiled with the new tools regardless of UB, Mach-O or PEF.
On the second, this is a moot point as Apple's made the move and
isn't going back any more than they're going to re-enable Classic
mode support.
On the third, that can only be answered by your customers / users.
In my case, it is important as it allows the use of the UB logos and
listing on Apple's software "Made4Mac" Macintosh Product Guide pages.
Tim
--
Tim Jones [EMAIL PROTECTED]
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