Date: Sat, 13 Nov 2004 09:40:00 +0200 From: Ruslan Ermilov <ru@FreeBSD.org> To: Don Lewis <truckman@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: [TEST] make -j patch [take 2] Message-ID: <20041113073959.GD30146@ip.net.ua> In-Reply-To: <200411130009.iAD09oGO067824@gw.catspoiler.org> References: <20041112130548.GA86162@ip.net.ua> <200411130009.iAD09oGO067824@gw.catspoiler.org>
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[-- Attachment #1 --] On Fri, Nov 12, 2004 at 04:09:49PM -0800, Don Lewis wrote: > On 12 Nov, Ruslan Ermilov wrote: > > > "make universe" builds 6 worlds today. By starting it with > > "make -j12", you build 6 worlds in parallel, and another 6 > > jobs are made available for building these worlds. When one > > world finishes, 7 jobs will be available for building 5 other > > worlds, etc. This is fine as long as you're interested in > > the final result of "make universe". > > > > When testing a commit candidate change with "make universe", > > I want to detect the breakage as early as possible. This can > > be achieved by building less worlds in parallel, and giving > > more parallelism to individual world builds. The overall > > time of "make universe" won't change significantly. > > Another interesting case would be to build some number of worlds in > parallel, but not parallelize the build of any given world. Doing it > this way has the advantage of generating the log files in an unscrambled > order so that the cause of any errors can be more easily determined from > the log file. > This was and is possible. make -j3 universe JFLAG=-B Will build three worlds in parallel, each world with a single job. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBlbpPqRfpzJluFF4RArY0AJ4wC9JokHBV+Citxm+liequWJcO3gCeK2TO Orn8Rjm944qbyQ6KF78/uUE= =aFAw -----END PGP SIGNATURE-----help
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