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Date: Mon, 08 Jul 2013 00:40:57 +0300
From: Andriy Gapon <avg@FreeBSD.org>
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To: Alfred Perlstein <alfred@FreeBSD.org>
Subject: Re: svn commit: r253002 - head
References: <201307072039.r67KdCdR028908@svn.freebsd.org>
 <9D4C7540-A3B0-45E5-8219-6A455D41DF70@gmail.com>
 <51D9DA55.2090808@freebsd.org>
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 "svn-src-all@freebsd.org" <svn-src-all@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