Date: Mon, 28 May 2007 23:20:36 +0200 From: Roman Divacky <rdivacky@freebsd.org> To: Stephen Montgomery-Smith <stephen@math.missouri.edu> Cc: ports@freebsd.org, hackers@freebsd.org Subject: Re: Looking for speed increases in "make index" and pkg_version for ports Message-ID: <20070528212036.GA35796@freebsd.org> In-Reply-To: <465B0490.7080203@math.missouri.edu> References: <4659EF80.70100@math.missouri.edu> <20070527223048.GA37505@icarus.home.lan> <465B0490.7080203@math.missouri.edu>
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On Mon, May 28, 2007 at 11:34:24AM -0500, Stephen Montgomery-Smith wrote: > Jeremy Chadwick wrote: > >On Sun, May 27, 2007 at 03:52:16PM -0500, Stephen Montgomery-Smith wrote: > >> I have been thinking a lot about looking for speed increases for "make > >> index" and pkg_version and things like that. So for example, in > >> pkg_version, it calls "make -V PKGNAME" for every installed package. Now > >> "make -V PKGNAME" should be a speedy operation, but the make has to load > >> in and analyze bsd.port.mk, a quite complicated file with about 200,000 > >> characters in it, when all it is needing to do is to figure out the > >> value of the variable PKGNAME. > > > >I have a related question, pertaining to "make all-depends-list" and the > >utter atrocity that is the make variable ALL-DEPENDS-LIST. If you don't > >know what it is, look for ^ALL-DEPENDS-LIST around line 5175, in > >bsd.ports.mk. > > I posted this to ports@freebsd.org, but now I am realizing that it is > hackers@freebsd.org that gets more responses. Anyway, here is a > multithreaded program "all-depends-list" that can get you double the > speed on dual processor systems, and even some small speed gains on > single processor systems. E.g. > > all-depends-list /usr/ports/x11/xorg > > http://www.math.missouri.edu/~stephen/all-depends-list.c btw.. stehpen, when are you getting a commit bit? :) I certainly hope that soon enough ;) roman
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