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From: Ron de Bruijn <ron AT gamr7 DOT com>
Subject:  Re: Parallel downloading of Cygwin packages
Date:  Mon, 02 Nov 2009 10:18:20 +0100
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Hi Chris,

Chris Cormie schreef:
> Christopher Faylor wrote:
>> On Fri, Oct 30, 2009 at 01:19:58PM +0100, Ron de Bruijn wrote:
>>> I use the latest installer, but it only uses one mirror to download
>>> packages from at the same time.  I have the impression that the mirror
>>> I selected only gives about 30KB/s, which makes installing Cygwin slow.
>>> What I would like the installer to do is to download from all mirrors
>>> in parallel different packages and in case one mirror doesn't respond
>>> that it just drops that one and uses another one.  The mirrors together
>>> should be able to saturate my connection.
> 
> With respect Ron, why not select a fast mirror if your current mirror is 
> slow? A single fast mirror is always going to be faster than multiple 
> mirrors, so there is little reason for the setup.exe team to support 
> multiple mirrors, or so it seems to me.
A single fast mirror is only going to be faster than multiple mirrors 
for unrealistic values of "fast". The reason for me not picking a fast 
mirror is simple; the only way to find out the speed of all the mirrors 
on this particular network is trying them all, because there is a proxy 
which only sends the files to my machine when they are completely done 
downloading. If the list of required packages is documented in a dead 
simple format (which it probably is) and the list of mirrors is always 
in some stable location, then writing something which downloads 
everything in parallel should be less than 50 lines of code. I am not 
saying that anyone is obliged to do so, I am just saying it isn't a huge 
problem.

Best regards,
  Ron de Bruijn





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