From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10232 invoked by uid 1002); 26 Jul 2003 13:51:04 -0000 Mailing-List: contact gentoo-dev-help@gentoo.org; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@gentoo.org Received: (qmail 31579 invoked from network); 26 Jul 2003 13:51:04 -0000 From: Chris Gianelloni To: =?ISO-8859-1?Q?H=E5vard?= Wall Cc: gentoo-dev@gentoo.org, werner.van.belle@vub.ac.be In-Reply-To: <3F22506A.8050902@ifi.uio.no> References: <200307251956.27193.ripat@xs4all.nl> <1059160421.2178.5.camel@sergey.swdevelopers.net> <200307252052.09728.werner.van.belle@vub.ac.be> <3F22506A.8050902@ifi.uio.no> Content-Type: text/plain; charset=iso-8859-1 Message-Id: <1059227442.24877.25.camel@vertigo> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.3 Date: 26 Jul 2003 09:50:42 -0400 Content-Transfer-Encoding: quoted-printable Subject: Re: [gentoo-dev] compile time statistics X-Archives-Salt: 413df4c2-54ec-4851-a7f9-7aca48026c05 X-Archives-Hash: dd47dec2fe4c3d9f220254b768d6971c On Sat, 2003-07-26 at 05:56, H=E5vard Wall wrote: > information. An estimate could primarly be based on some "major"=20 > factors; perhaps cpu-type and clock frequency. Then, if enough=20 > statistics is available for the current architecture, on other settings= =20 > as well, sucb as -O flags and size of main memory (MAKEOPTS?). A kind o= f=20 > hierarchical estimate... Could perhaps be hard to implement in practice= =20 > though (?). To be anywhere near the correct answer you would need to know: - CPU type - CPU speed - Number of CPUs - MAKEOPTS - USE flags - Some of the CFLAGS, particularly -march and -O You would also have to cancel out any data gotten from a machine with distcc or ccache enabled, since those will throw your accuracy way off.=20 For example, I have a P166MMX machine running Gentoo on 32MB of RAM. It runs fine. How is it setup? Simple, I have it setup for distcc with MAKEOPTS=3D-j4 and DISTCC_HOSTS=3D"smpbox1/2 smpbox2/2 othermachine". It pretty much never does any compiling locally. It can compile applications almost as fast as working with one of my SMP machines. The data would be completely off on this machine if it were to be submitted. --=20 Chris Gianelloni Developer, Gentoo Linux -- gentoo-dev@gentoo.org mailing list