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From: Peter Eisentraut <[email protected]>
To: Dave Page <[email protected]>
To: John Hansen <[email protected]>
To: Devrim GUNDUZ <[email protected]>
Cc: PostgreSQL WWW Mailing List <[email protected]>
Subject: Re: Problem with mirrorring
Date: Sun, 3 Oct 2004 13:25:14 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <E7F85A1B5FF8D44C8A1AF6885BC9A0E407B40D@ratbert.vale-housing.co.uk>
References: <E7F85A1B5FF8D44C8A1AF6885BC9A0E407B40D@ratbert.vale-housing.co.uk>

Dave Page wrote:
> Of course, how it does that is a mystery to me - without fully
> comparing both versions, how can it create a diff? I guess that's
> what made it PhD material...

It doesn't create a diff.  It computes checksums for pieces of the file 
and transfers those.

Apparently, though, it first checks the modification time before doing 
all that checksum stuff.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/

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