Re: Excessive data transfer when getting unified diff?

Stefan Küng wrote:
> On 3/1/06, Simon Large <simon@skirridsystems.co.uk> wrote:
>
>> I just tried getting a unified diff of r5114 and the progress dialog
>> reports something like 645kbytes transferred. The size of the unified
>> diff file itself is 8.9 kbytes. What is all the rest of the transferred
>> data for?
>
> Just remember that the diff is done on the client side. So to generate
> the unified diff, Subversion needs to fetch the complete versions of
> both revisions to diff (ok, it first asks the server about which files
> were changed between those revisions so it won't fetch
> not-changed-files).
> Also, that's why this here was needed:
> http://subversion.tigris.org/issues/show_bug.cgi?id=2378

And I always thought the diff was done server side to minimise network
traffic, which is what we imply in our docs :-(

Simon

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