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Re: More diff performance notes

From: Greg Hudson <ghudson_at_MIT.EDU>
Date: 2000-10-09 20:00:50 CEST

I wrote:
>> (While I'm here, I have determined that I just about match
>> diff+gzip on the .elc data set if I change the svndiff encoding so
>> that new data immediately follows "copy from new data" instructions
>> instead of being stored in a separate part of the window. The
>> average encoded bytes per instruction drops to 2.48 in the binary
>> case and 2.80 in the text case.)

Branko wrote:
> Hmmm? Why would that help? The size of the new data doesn't change
> by moving around, does it? Where's the savings in that, then?

You no longer need an offset when you encode "copy from new data"
instructions.
Received on Sat Oct 21 14:36:10 2006

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