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Date:      Thu, 22 Dec 2011 13:45:24 +0100
From:      Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs@spoerlein.net>
To:        Warner Losh <imp@bsdimp.com>
Cc:        Ryan Stone <rysto32@gmail.com>, freebsd-current@freebsd.org, Lyndon Nerenberg <lyndon@orthanc.ca>
Subject:   Re: WITHOUT_PROFILE=yes by default
Message-ID:  <20111222124524.GW83814@acme.spoerlein.net>
In-Reply-To: <554C031E-531F-4A1F-B315-8F61D33D70A7@bsdimp.com>
References:  <CADe0-4n2rXvoo4K%2BCHd-JBCHJ56OdTJTpzsF1r2X1yvcLt5CEA@mail.gmail.com> <20111202064132.GC88903@troutmask.apl.washington.edu> <4ED8776F.9060301@FreeBSD.org> <20111202072349.GA89183@troutmask.apl.washington.edu> <20111202083501.GA73959@dragon.NUXI.org> <CADe0-4nj=ZvfPrT=9=m9hQhsADn9--5VFoAxTncGasQQTZN=0g@mail.gmail.com> <alpine.OSX.1.10.1112020746330.91234@peregrin.orthanc.ca> <CAFMmRNxeP_AEQ11jLJ8NCZmEHyxoeg4Z%2Bb6zJbETC8-S7nqhrQ@mail.gmail.com> <alpine.OSX.1.10.1112020852270.91234@peregrin.orthanc.ca> <554C031E-531F-4A1F-B315-8F61D33D70A7@bsdimp.com>

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On Mon, 2011-12-19 at 12:50:42 -0700, Warner Losh wrote:
> 
> On Dec 2, 2011, at 9:52 AM, Lyndon Nerenberg wrote:
> 
> >> Using profiled libs and gprof to profile your code has been obsolete
> >> in FreeBSD on i386 and amd64 for over six years now.
> > 
> > Funny, it still seems to work on my systems.
> 
> Worked for me last time I tried as well.  Was able to find the problems w/o a hassle.  turning them off is plain wrong.
> 
> Can we at least ship profiled libraries for the release?

I didn't want to get in on the discussion, but for me every time you need
to recompile software to get to feature A, I consider it a bug.

Rebooting to enable a feature? Sure. Recompiling software to enable a
feature? What? Is this the middle ages? What happened to shipping
software/binaries that can work for everybody?

The way I see it, profiling currently works for *both*, users that need
the libs and users that don't need the libs.

Reducing compile times is not a worthy goal, IMHO, as no user should
ever have need to re-compile FreeBSD. Neither to tune something in
GENERIC nor to rebuild world.

Just my 2 cents,
Uli



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