Re: Xcode 4.2.1
Re: Xcode 4.2.1
- Subject: Re: Xcode 4.2.1
- From: Andreas Grosam <email@hidden>
- Date: Sat, 19 Nov 2011 10:32:52 +0100
On Nov 19, 2011, at 2:41 AM, Marco S Hyman wrote:
>> So... was the 1.8 GB update for you a true upgrade (in the MAS sense) or
>> did you too do a fresh install?
>
> Yes. I started App Store... from the Apple menu as I knew I had
> another bit of software that needed an update. Surprise, surprise...
> Xcode was on the update list, too. At 1.8 GB in download size.
>
> And for the other Conrad who replied... it's irrelevant that I'm
> not forced to upgrade. The issue for me is that the way the code
> is wrapped in an installer I'm forced to download the entire 1.8
> GB package if I desire the update.
>
> 1.8 GB for a bug fix release is, IMHO, a bit excessive
Using the tool 'rdiff' the size of the delta file from xcode_4.2_and_ios_5_sdk_beta_7_for_lion.dmg to xcode_4.2_and_ios_5_sdk_for_lion.dmg results in 1.2 GByte.
This is largely due to the fact that delta algorithms can't handle compressed files very well. There are alternatives to rdiff, which may handle these cases better (e.g.: zsync).
Nonetheless, I minor bug fix wouldn't require a delta file that large (haven't done this, though).
The changes in the mentioned images above were certainly significant.
Andreas _______________________________________________
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