Date: Mon, 28 May 2007 11:34:24 -0500 From: Stephen Montgomery-Smith <stephen@math.missouri.edu> To: Stephen Montgomery-Smith <stephen@math.missouri.edu>, ports@freebsd.org, hackers@freebsd.org Subject: Re: Looking for speed increases in "make index" and pkg_version for ports Message-ID: <465B0490.7080203@math.missouri.edu> In-Reply-To: <20070527223048.GA37505@icarus.home.lan> References: <4659EF80.70100@math.missouri.edu> <20070527223048.GA37505@icarus.home.lan>
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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
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