Re: apt PARALLELISM
Martijn van Oosterhout <firstname.lastname@example.org> writes:
> 2005/12/12, Henrique de Moraes Holschuh <email@example.com>:
> We don't want them to open multiple connections even to
> MULTIPLE servers...
> That's odd though, because apt *does* open connections to multiple servers all
> the time. To fetch packages lists, or if a package is only available on one of
> the servers further down.
> Secondly, the amount of data to be downloaded is independant of the time it
> takes, thus, in aggregate, whether apt parallelizes or not won't make any
> difference to the total bandwidth used, although it may shift more load to the
> ftp2 servers since they never get used in normal usage.
> Finally, how much of these slowdowns reported by people are caused by the
> bandwidth delay product. In that case, two servers will definitly be able to
> use more than a single server by itself... I didn't think it common practice
> for large mirror to configure multi-megabyte windows...
> Have a nice day,
Actualy one thing apt could do:
mrvn@frosties:~% host security.debian.org
security.debian.org A 188.8.131.52
security.debian.org A 184.108.40.206
security.debian.org A 220.127.116.11
Why not open 3 connections one to each host?
Or at least fall back to the other IPs if the first one gives an