How about to patch synapatic to make it actively download packages using multiple threads?

Nicolas Alvarez nicolas.alvarez at gmail.com
Mon Oct 22 04:00:39 BST 2007


On 10/21/07, yueyu lin <popeyelin at gmail.com> wrote:
> On 10/22/07, Nicolas Alvarez <nicolas.alvarez at gmail.com> wrote:
> > On 10/21/07, yueyu lin <popeyelin at gmail.com> wrote:
> > > As you noticed, sometimes, synaptic downloads packages slowly. I noticed
> > > that apt-get in fact can use multiple threads to download sometimes. But
> > > synaptic seems seldom to do this.
> > > I wanna know why? In fact, it will not be difficult to modify codes to
> > > support active multiple threads downloading. But it doesn't appear. I
> guess
> > > developers think it's impolite to fork a lot of threads to download
> things
> > > from server. The server may only serve for a few *rude* people. If it's
> > > true, I will stop any attempts to do so. If it's not,I can have a try to
> do
> > > this.
> >
> > Using multiple connections to a single server is a sure way to "make
> > things worse", that is, overloading the server more. What does help is
> > making multiple connections to *different* servers. That actually
> > lowers load, since your download bandwidth is now dispersed between
> > servers, so you're using up less upstream bandwidth from each server.
> > I have been doing so to download the .iso's via HTTP (torrents go
> > slowly for me).
> >
> The problem to download from multiple server is that multiple servers may
> not be synchronized at the same time.
> Data synchronization is a serious problem. But I guess this should be better
> if we can make sure that multiple servers have the same package files.
>

File gives 404 => try another server. Server times out because of load
=> try another server. Server is downloading way too slowly compared
to the other connections => disconnect from it and try another server.

-- 
Nicolas



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