From owner-freebsd-current@freebsd.org  Fri Jan 17 17:19:53 2020
Return-Path: <owner-freebsd-current@freebsd.org>
Delivered-To: freebsd-current@mailman.nyi.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.nyi.freebsd.org (Postfix) with ESMTP id D3E721F4AA4;
 Fri, 17 Jan 2020 17:19:53 +0000 (UTC)
 (envelope-from sgk@troutmask.apl.washington.edu)
Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu
 [128.95.76.21])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 server-signature RSA-PSS (4096 bits)
 client-signature RSA-PSS (2048 bits) client-digest SHA256)
 (Client CN "troutmask", Issuer "troutmask" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id 47znqs4jZBz3JxF;
 Fri, 17 Jan 2020 17:19:53 +0000 (UTC)
 (envelope-from sgk@troutmask.apl.washington.edu)
Received: from troutmask.apl.washington.edu (localhost [127.0.0.1])
 by troutmask.apl.washington.edu (8.15.2/8.15.2) with ESMTPS id 00HHJoYn001554
 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO);
 Fri, 17 Jan 2020 09:19:50 -0800 (PST)
 (envelope-from sgk@troutmask.apl.washington.edu)
Received: (from sgk@localhost)
 by troutmask.apl.washington.edu (8.15.2/8.15.2/Submit) id 00HHJown001553;
 Fri, 17 Jan 2020 09:19:50 -0800 (PST) (envelope-from sgk)
Date: Fri, 17 Jan 2020 09:19:50 -0800
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: Ed Maste <emaste@freebsd.org>
Cc: FreeBSD Current <freebsd-current@freebsd.org>,
 FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: Turn off PROFILE option and remove WITH_PROFILE after FreeBSD 13?
Message-ID: <20200117171950.GA79297@troutmask.apl.washington.edu>
Reply-To: sgk@troutmask.apl.washington.edu
References: <CAPyFy2Bk6DTYrDgkhra9xP03bJZXq5vDkD8iXbTZZGpfj3MUZA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAPyFy2Bk6DTYrDgkhra9xP03bJZXq5vDkD8iXbTZZGpfj3MUZA@mail.gmail.com>
User-Agent: Mutt/1.12.2 (2019-09-21)
X-Rspamd-Queue-Id: 47znqs4jZBz3JxF
X-Spamd-Bar: -----
Authentication-Results: mx1.freebsd.org;
	none
X-Spamd-Result: default: False [-5.96 / 15.00];
 NEURAL_HAM_MEDIUM(-0.99)[-0.990,0]; REPLY(-4.00)[];
 NEURAL_HAM_LONG(-0.97)[-0.969,0]
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 17 Jan 2020 17:19:53 -0000

On Fri, Jan 17, 2020 at 10:40:09AM -0500, Ed Maste wrote:
> 
> Any comments on this plan? Does anyone use the -pg compiler flag and
> the _p.a profiling library archives?
> 

Yes, I do.

I have WITHOUT_PROFILE='yes' set in /etc/make.conf for a normal
buildworld.  I then comment it out and specifically build libc_p.a
and libm_p.a.  These are the only profiled libraries I use.

Why?  Because adding -pg to the gfortran command line is sufficient
to getting profiling information for long running numerically
intensive codes.  'gfortran -pg', of course, loosk for libc_p.a
and libm_p.a.

-- 
Steve