> On Aug 29, 2017, at 5:54 PM, Sam Weinig <wei...@apple.com> wrote: > > > >> On Aug 29, 2017, at 12:46 PM, Geoffrey Garen <gga...@apple.com >> <mailto:gga...@apple.com>> wrote: >> >>> This isn’t the scenario I find myself in most often. A much more common >>> scenario is working on a change; touch one or two files, and then compile >>> and test/debug. Rinse and repeat. >> >> We’ve already tested this case. The worst case slowdown, if you touch a >> small file that's in the same bundle as the biggest .cpp file in the >> project, is 6s => 7s (20%). >> >> Geoff > > I see larger than ~6 second build times with this scenario, not measure > scientifically, but I would approximate it more around 20 - 30 seconds. Do > you expect the 20% to scale linearly?
It depends on how things are bundled. Operating under the assumption, which needs to be verified, that all the .cpp files in a bundle include *roughly* the same, I would expect this to scale sub-linearly. In WebCore+ I expect headers make up an even larger percentage of a translation unit so if I had to guess it would be an even smaller difference. This is something that I’m planning on testing as I proceed with rolling out unified source builds. Cheers, Keith > > > In a completely other direction, what does this mean for use of Xcode? Can we > still build from Xcode? Debug? > > - Sam > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > https://lists.webkit.org/mailman/listinfo/webkit-dev
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