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Re: apt PARALLELISM



On Wednesday 14 December 2005 14:41, Olaf van der Spek wrote:
> On 13 Dec 2005 15:56:00 +0100, Claus Färber <claus@xn--frber-gra.muc.de> 
wrote:
> > Olaf van der Spek <olafvdspek@gmail.com> schrieb/wrote:
> > > That's not true. Suppose you've only got 3 users. If each user
> > > connects to one (different) mirror, he gets 1/1 of that mirror's
> > > bandwidth. If each user connects to each mirror, he only gets 1/3 of
> > > that mirror's bandwidth.
> >
> > They could get 1/1 of each server (total 3/1) if they connect at
> > different times.
>
> True if you assume the users have three times the bandwidth of a
> mirror (on average). A 'bit' unlikely.

It's not that simple; you have to count multiple users. If there are 500 
users accessing the mirror simultaneously, the mirror needs to have 500x 
the bandwidth of every user.

This isn't even taking into account the complexity of the internet routing 
in between, which can make multiple simultaneous sources faster--in actual 
wall-clock time--for the user no matter how fast or slow the user's or the 
mirror's connection is "on average".

-- 
Wesley J. Landaker <wjl@icecavern.net> <xmpp:wjl@icecavern.net>
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