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Re: Speeding up XCode?
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Re: Speeding up XCode?


  • Subject: Re: Speeding up XCode?
  • From: Dair Grant <email@hidden>
  • Date: Wed, 19 Oct 2005 11:41:44 +0100

email@hidden wrote:

>So, let's look back to my findings from my original post: opening an
>assembler listing with 467,747 lines of code in TextEdit and forcing
>TextEdit to lay out the whole file takes 20 seconds.
...
>Now, opening the same file in Xcode and forcing again a layout of the
>whole file takes Xcode a bit over 2 minutes or more than 120 seconds.

I pasted CarbonEvents.h onto itself 32 times to create a 16Mb file with
466K lines. From hitting Open to being able to flick between top/bottom,
the times were:

    BBEdit 8             2 seconds
    CodeWarrior 9        6 seconds
    TextEdit (10.4)     58 seconds
    Xcode 2.1           95 seconds

So whatever extra work Xcode is doing doesn't amount to a x6 slowdown
for me, it's more like x1.5 (on a 1.25Ghz/1Gb PB).

I really don't think there's much you can deduce from external timings,
as the cost of this extra work is going to vary depending on the content
of your test case as much as the number of lines.

About the only thing you can say with certainty is that using a general
purpose text engine makes Xcode's editor slower than editors that are
tuned for this type of content.


-dair
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