On Fri, Sep 9, 2011 at 3:55 PM, Terrence Enger <ten...@iseries-guru.com> wrote: > On Fri, 2011-09-09 at 14:22 -0500, Norbert Thiebaud wrote: >> >> Now granted, once we can reliably do incremental build, the question >> of the effectiveness of ccache will be much more acute. >> presumable incremental build only try to compile stuff that _need_ to >> be compiled and therefore should be a ccache miss... so with perfect >> incremental build the ccache hit should be 0% > > Not quite, I think. Consider a header file changed within > in #if-skipped region in a way which does not change the > number of skipped lines. I expect this would trigger a > recompile and that ccache, other things being equal, would > find a hit on the cache. Does this sound plausible. > > Still, I would expect the hit rate to go really close to 0.
And as Lubos remarked earlier... you need to be in the 20% hit rate to get your money-back... Norbert _______________________________________________ LibreOffice mailing list LibreOffice@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/libreoffice
