Date: Mon, 08 Jul 2013 00:40:57 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Alfred Perlstein <alfred@FreeBSD.org> Cc: "svn-src-head@freebsd.org" <svn-src-head@FreeBSD.org>, "svn-src-all@freebsd.org" <svn-src-all@FreeBSD.org>, "src-committers@freebsd.org" <src-committers@FreeBSD.org>, Garrett Cooper <yaneurabeya@gmail.com> Subject: Re: svn commit: r253002 - head Message-ID: <51D9E069.5060300@FreeBSD.org> In-Reply-To: <51D9DA55.2090808@freebsd.org> References: <201307072039.r67KdCdR028908@svn.freebsd.org> <9D4C7540-A3B0-45E5-8219-6A455D41DF70@gmail.com> <51D9DA55.2090808@freebsd.org>
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on 08/07/2013 00:15 Alfred Perlstein said the following: > On 7/7/13 2:01 PM, Garrett Cooper wrote: >> Why the magic number 12? > > Numbers higher seem to result in worse performance as reported by some members > of my team. Should we really commit all "notes to self" or "my team's knowledge base" to FreeBSD source code like this? >> >> On Jul 7, 2013, at 1:39 PM, Alfred Perlstein <alfred@FreeBSD.org> wrote: >> >>> Author: alfred >>> Date: Sun Jul 7 20:39:11 2013 >>> New Revision: 253002 >>> URL: http://svnweb.freebsd.org/changeset/base/253002 >>> >>> Log: >>> Document tip on how to build all kernels quickly. >>> >>> Modified: >>> head/Makefile >>> >>> Modified: head/Makefile >>> ============================================================================== >>> --- head/Makefile Sun Jul 7 19:58:14 2013 (r253001) >>> +++ head/Makefile Sun Jul 7 20:39:11 2013 (r253002) >>> @@ -32,6 +32,12 @@ >>> # targets - Print a list of supported TARGET/TARGET_ARCH pairs >>> # for world and kernel targets. >>> # toolchains - Build a toolchain for all world and kernel targets. >>> +# >>> +# "quick" way to test all kernel builds: >>> +# _jflag=`sysctl -n hw.ncpu` >>> +# _jflag=$(($_jflag * 2)) >>> +# [ $_jflag -gt 12 ] && _jflag=12 >>> +# make universe -DMAKE_JUST_KERNELS JFLAG=${jflag} >>> # >>> # This makefile is simple by design. The FreeBSD make automatically reads >>> # the /usr/share/mk/sys.mk unless the -m argument is specified on the >>> _______________________________________________ >>> svn-src-head@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/svn-src-head >>> To unsubscribe, send any mail to "svn-src-head-unsubscribe@freebsd.org" > -- Andriy Gapon
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