Re: G4 867mhz, Leopard, and XCode 3
Re: G4 867mhz, Leopard, and XCode 3
- Subject: Re: G4 867mhz, Leopard, and XCode 3
- From: Chris Espinosa <email@hidden>
- Date: Fri, 18 Apr 2008 09:39:58 -0700
On Apr 17, 2008, at 5:05 PM, Greg Guerin wrote:
Mark Wagner wrote:
Oddly, neither Xcode 2.4 on a MacBook Pro 2.33 nor vim on a Pentium
MMX 233 have any problems for me.
Not odd at all: Xcode 2.4.1 doesn't have the problem.
When I use it to edit "BDSKEditor.m" under 10.4 Tiger, there are no
pathological slowdowns like with Xcode 3.0 on 10.5 Leopard. Even
relatively puny machines run fairly well, e.g. a 500 MHz dual G4
tower with
one CPU disabled.
Sadly, Xcode 2.4.1 won't run on Leopard.
But Xcode 2.5 will, and we designed, produced, and shipped it exactly
for situations like this. Xcode 2.5 is very little more than a port
of Xcode 2.4.1 to Leopard, restructured to run side-by-side with Xcode
3.x.
In Xcode 3.0 we fixed over 50 correctness and completeness bugs with
syntax coloring, including wiring it to the project index to be able
to color system symbols differently from project symbols. We also
made significant improvements in the overall performance of the editor
with large files and scrolling. Unfortunately (as sometimes happens
in software development) we introduced a few regressions in specific
cases, such as the one Steve wrote a very helpful Radar, on, and the
overall footprint of Xcode 3.1 grew due to support of new capabilities
and preparation for the future (iPhone SDK hint hint). The
combination of our own new features and technology adoption of Garbage
Collection means that Xcode 3.0 doesn't perform nearly as well on
single-core or low-memory machines as Xcode 2.5 did. We're continuing
to performance-tune Xcode 3 through its updates and you might find
some of the more pathological cases in syntax coloring have already
been fixed in the Xcode 3.1 Beta.
Keep writing specific, detailed, actionable bugs like Steve's, and we
will continue to improve Xcode's performance, as well as providing
previous versions to run on current OSes in case we introduce a
regression that seriously affects you.
Chris
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