> On Aug 29, 2017, at 12:48 PM, Geoffrey Garen <gga...@apple.com> wrote:
> 
>>> We have some preliminary data that says incremental builds will be OK, but 
>>> not a full benchmark.
>>> 
>>> Here’s a full benchmark I propose to test incremental builds:
>>> 
>>>     Start 7 days ago in SVN history. Do a clean build.
>>> 
>>>     SVN update forward by 24 hours. Do an incremental build. Time this 
>>> build.
>>> 
>>>     Repeat 7 times. Average the results.
>> 
>> How did you arrive at a day’s worth of changes being representative of a 
>> WebKit contributor’s incremental build?
> 
> I asked some people how often they svn up and they said every day.

I see. The right question to ask would have been how much change occurs in 
their working copy between consecutive incremental builds.

> 
> Geoff

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