On Tue, 10 Jun 2008 09:56:18 -0400 Richard Freeman <[EMAIL PROTECTED]> wrote: > Joe Peterson wrote: > > No, I have not profiled PMs to try this, but you are saying that > > reading the first few lines of a file is not faster than sourcing > > the whole thing with bash? Remember that it could abort the minute > > it sees a non '#' or blank line, which would be after the first few. > > > > Actually, if you specified that the EAPI goes on the first line, then > you'd only need to read the first line. > > And to the extent that the rest got read into memory anyway by the > kernel, well then it is already in the cache when whatever mechanism > is invoked to parse the rest of the file.
Except that currently, the ebuild file isn't opened for read. So it's not in memory at all. > I don't think that filename-vs-first-line is going to make a big > difference in practical performance. It's about a factor of five difference in cold-cache resolution performance for Paludis. -- Ciaran McCreesh
signature.asc
Description: PGP signature
