[webkit-dev] Building WebKit's GTK+ back-end using distcc timing

[Ilyes Gouta]

Hi Alejandro,

I don't think that the slowdown is due to the addition of new
C++/code. Even building with most of the WebKit options turned off,
actually takes that much of time.

By just observing how the files are dispatched to the distcc servers,
how these are loaded by the client machine (which initiate the build),
almost could tell that this latter is doing more work (slower, more
preprocessor work?) for dispatching source code, than a
pre-9161f3277b15aae8d15a929d5362e28cad7e01c0 commit code base. In our
setup, the client machine which initiates the distributed build,
doesn't contribute to it, i.e doesn't compile code, but just serves
the source code.

> Anyway the main change lately in the compilation system has been this:
>
> http://trac.webkit.org/changeset/75362

Thanks for the reference! I'll check it out.

-Ilyes

On Thu, Mar 10, 2011 at 12:46 PM, Alejandro Garcia Castro
<alex at igalia.com> wrote:
> On Thu, Mar 10, 2011 at 11:55:15AM +0100, Ilyes Gouta wrote:
>> Hi,
>>
>> [...]
>>
>> Could some one enlighten us about what have changed in the build
>> system of the Gtk+ port of WebKit that would have an impact on the
>> total build time? Could it be that configure.ac has changed so that
>> the final generated GNUMakefile is less optimal and spends more time
>> doing something else, when going through the CXX files to compile
>> them?
>>
>
> I think after that commit (if I checked it correctly it was 1 year
> ago) a lot things have changed and I do not think there is just one
> patch to blame, probably just the additions of new files to the
> compilation after that commit could be increasing the time. I've also
> noticed compilation is slower since 1 year ago, but I do not think it
> has been just one patch the reason.
>
> Anyway the main change lately in the compilation system has been this:
>
> http://trac.webkit.org/changeset/75362
>
> But not sure if that could cause such a big impact in your distcc
> compilation, you can try to check it.
>
> I hope this helps.
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