Re: Benchmark (Phoronix): FreeBSD 9.0-RC2 vs. Oracle Linux 6.1 Server

On Fri, Dec 23, 2011 at 10:00:05AM -0500, John Baldwin wrote:
> On Thursday, December 22, 2011 6:58:46 pm Jeremy Chadwick wrote:
> > On Fri, Dec 23, 2011 at 12:44:14AM +0100, O. Hartmann wrote:
> > > On 12/21/11 19:41, Alexander Leidinger wrote:
> > > > Hi,
> > > > 
> > > > while the discussion continued here, some work started at some other 
> place. Now... in case someone here is willing to help instead of talking, feel 
> free to go to http://wiki.freebsd.org/BenchmarkAdvice and have a look what can 
> be improved. The page is far from perfect and needs some additional people 
> which are willing to improve it.
> > > > 
> > > > This is only part of the problem. A tuning page in the wiki - which 
> could be referenced from the benchmark page - would be great too. Any 
> volunteers? A first step would be to take he tuning-man-page and wikify it. 
> Other tuning sources are welcome too.
> > > > 
> > > > Every FreeBSD dev with a wiki account can hand out write access to the 
> wiki. The benchmark page gives contributor-access. If someone wants write 
> access create a FirstnameLastname account and ask here for contributor-access.
> > > > 
> > > > Don't worry if you think your english is not good enough, even some one-
> word notes can help (and _my_ english got already corrected by other people on 
> the benchmark page).
> > > > 
> > > > Bye,
> > > > Alexander.
> > > > 
> > > > 
> > > > 
> > > > 
> > > 
> > > Nice to see movement ;-)
> > > 
> > > But there seems something unclear:
> > > 
> > > man make.conf(5) says, that  MALLOC_PRODUCTION is a knob set in
> > > /etc/make.conf.
> > > The WiJi says, MALLOC_PRODUCTION is to be set in /etc/src.conf.
> > > 
> > > What's right and what's wrong now?
> > 
> > I can say with certainty that this value belongs in /etc/make.conf
> > (on RELENG_8 and earlier at least).
> > 
> > src/share/mk/bsd.own.mk has no framework for MK_MALLOC_PRODUCTION,
> > so, this is definitely a make.conf variable.
> 
> Eh, normal make variables can go in src.conf as well.  They do not have
> to be listed in bsd.own.mk.  World builds include /etc/src.conf whereas
> every make invocation includes /etc/make.conf via sys.mk.  The only reason
> to use /etc/src.conf is to have a place to put variables only affect
> make buildworld / buildkernel but do not affect other make invocations.

I was always under the impression src.conf(5) variables had to be
manually added to bsd.own.mk and similar bits (e.g.
src/tools/build/options/WITH_xxx which is what's used to create the
src.conf(5) man page), but upon your comment and manual investigation on
my part, I found you're indeed right.  Taken from bsd.own.mk:

107 .if !defined(_WITHOUT_SRCCONF)
108 SRCCONF?=       /etc/src.conf
109 .if exists(${SRCCONF})
110 .include "${SRCCONF}"
111 .endif
112 .endif

As long as third-party software doesn't depend on MALLOC_PRODUCTION for
something (I don't know why something would, but who knows; maybe
there's a third-party malloc implementation which might?), then putting
it in src.conf would be fine (src/lib/libc/stdlib files reference it).

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |

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