Update patches versus full update RPM
Andy Green
fedora at warmcat.com
Sat Jan 10 12:01:30 UTC 2004
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On Saturday 10 January 2004 03:42, Leonard den Ottolander wrote:
> > How does this help the problem of an overworked download server, then?
> > People on dial-up will get timeouts just as easily as people on
> > broadband.
> >
> > Notice how few rsync servers there are on the mirror list? Part of the
> > reason is that rsync can put a much larger load on the server. Any kind
> > of decompression and/or recompression will just make that worse.
>
> Yes, I thought of that just now. Rsync is not an option since it wastes too
> much cpu on the server side, so we should go for "smart patches" (do any
Since this was last discussed a few weeks ago I was lurking on the Bittorrent
ml, they are addressing the binding of many files into a single torrent with
clients able to cherrypick filrs from within that. BT is already a weak sort
of rsync as it will not try to download segments which already have the
correct md5.
If someone mounted the distro ISO, updated a few RPMS and umounted it, the
resulting filesystem should bear a LOT of resemblance to the original, only
the new RPMs and the filesystem areas of the image should be changed. So
getting BT to save over the original should be a very quick download.
- -Andy
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