Date: Wed, 17 Nov 2004 10:39:07 +0200 From: Ruslan Ermilov <ru@FreeBSD.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: current@FreeBSD.org Subject: Re: [TEST] make -j patch Message-ID: <20041117083907.GA24067@ip.net.ua> In-Reply-To: <11777.1100641566@critter.freebsd.dk> References: <20041116120515.J13866@carver.gumbysoft.com> <11777.1100641566@critter.freebsd.dk>
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--EVF5PPMfhYS0aIcm Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Nov 16, 2004 at 10:46:06PM +0100, Poul-Henning Kamp wrote: > In message <20041116120515.J13866@carver.gumbysoft.com>, Doug White write= s: > >On Thu, 11 Nov 2004, Poul-Henning Kamp wrote: > > > >> > >> This patch makes the '-j' argument to make(1) become a global limit > >> on number of jobs launched for all submakes in the build. > >> > >> Today a "make -j 12" may start many more than 12 jobs because each > >> submake interprets the 12 without reference to other makes. > > > >Ah, this is the thing I've noticed with the rescue build where it create > >-j^2 jobs. :) >=20 > -j^(depth of directories) actually, but that is even worse. >=20 In the "make buildworld" case only. Like I told you, bsd.subdir.mk is constructed so that subdirs are NOT built in parallel, and there is a reason for this. Makefile.inc1 creates special par-* targets to build things in subdirs in parallel. There are a lot of places that depend on a particular order of directories listed in SUBDIR. Hopefully, after we created libs and headers, we can build top-level directories in parallel. Anyway, thanks for looking into it and finally fixing this! Cheers, --=20 Ruslan Ermilov ru@FreeBSD.org FreeBSD committer --EVF5PPMfhYS0aIcm Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBmw4rqRfpzJluFF4RAslWAJ94J+GThTTGOgPPKPLLDFu5t1HoAgCeJ66c umDljGK1jgLbaFTWG2TiJR0= =bY5h -----END PGP SIGNATURE----- --EVF5PPMfhYS0aIcm--
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