From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <ae745fc607918464faea0fda6b55b5c8@quanstro.net>
From: erik quanstrom <quanstro@quanstro.net>
Date: Tue, 10 Feb 2009 17:28:28 -0500
To: 9fans@9fans.net
In-Reply-To: <1234304633.4957.169.camel@goose.sun.com>
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Subject: Re: [9fans] source browsing via http is back
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> > what extra work would that be, and if there is extra work, could you explain
> > why this would be a problem?
>
> Correct me if I'm wrong, but my understanding of how pull works is
> that it pulls files in their entirety (IOW: cp /n/sources/... /)
> which means that shared blocks get copied as many times as there
> are files sharing them.

i would be very suprised if a single copy of sources had many shared
blocks.  furthermore, as is made quite plain by upas, a change early
in a file almost always changes every subsequent block in the file.
there are some corner cases for block-sized or same sized adds/deletes.
but nontheless, the vast majority of changes will change a good deal
of of the blocks comprising the file.

what leads you to beleve that that amount of sharing will be
significant?

- erik