From owner-freebsd-current Mon Feb 5 09:21:19 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id JAA10953 for current-outgoing; Mon, 5 Feb 1996 09:21:19 -0800 (PST) Received: from alpha.xerox.com (alpha.Xerox.COM [13.1.64.93]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id JAA10947 for ; Mon, 5 Feb 1996 09:21:18 -0800 (PST) Received: from gemini.sdsp.mc.xerox.com ([13.231.132.20]) by alpha.xerox.com with SMTP id <14813(5)>; Mon, 5 Feb 1996 09:20:25 PST Received: from gnu.mc.xerox.com (gnu.sdsp.mc.xerox.com) by gemini.sdsp.mc.xerox.com (4.1/SMI-4.1) id AA07390; Mon, 5 Feb 96 12:20:09 EST Received: by gnu.mc.xerox.com (4.1/SMI-4.1) id AA00240; Mon, 5 Feb 96 12:20:09 EST Message-Id: <9602051720.AA00240@gnu.mc.xerox.com> X-Mailer: exmh version 1.6.4 10/10/95 To: Chien-Ta Lee Cc: freebsd-current@freebsd.org Subject: Re: make world with -fomit-frame-pointer In-Reply-To: Your message of "Fri, 02 Feb 1996 19:26:34 PST." <199602030326.LAA23878@linux.csie.nctu.edu.tw> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 5 Feb 1996 09:20:08 PST From: "Marty Leisner" Sender: owner-current@freebsd.org Precedence: bulk > > Hi : > > I noticed an gcc option from recently pentium-gcc discussions, > that's "-fomit-frame-pointer". (I remembered linux often use it) > I man gcc and it said that the option will make debug impossible. > I always making my world with "-O2 -m486", is it ok to use this > option to make world ? How about make kernel ?! > About make kernel, will "-O2" or "-O2 -m486" make kernel run faster ? > > Thanks. > -- > > For grunts, I tried -O2 -fomit-frame-pointer when building the kernel... It become bigger (;-) [maybe loops got unrolled...] I think it would be interested to run lmbench or something on different kernels... -- marty leisner@sdsp.mc.xerox.com Member of the League for Programming Freedom