From owner-freebsd-stable Sun Jul 16 17:50:22 2000 Delivered-To: freebsd-stable@freebsd.org Received: from camus.cybercable.fr (camus.cybercable.fr [212.198.0.200]) by hub.freebsd.org (Postfix) with SMTP id C994C37B78E for ; Sun, 16 Jul 2000 17:50:15 -0700 (PDT) (envelope-from clefevre%no-spam@citeweb.net) Received: (qmail 15497258 invoked from network); 17 Jul 2000 00:50:14 -0000 Received: from r224m65.cybercable.tm.fr (HELO gits.dyndns.org) ([195.132.224.65]) (envelope-sender ) by camus.cybercable.fr (qmail-ldap-1.03) with SMTP for ; 17 Jul 2000 00:50:14 -0000 Received: (from root@localhost) by gits.dyndns.org (8.9.3/8.9.3) id CAA34845; Mon, 17 Jul 2000 02:50:09 +0200 (CEST) (envelope-from clefevre%no-spam@citeweb.net) Posted-Date: Mon, 17 Jul 2000 02:50:09 +0200 (CEST) To: Kris Kennaway Cc: Joachim =?iso-8859-1?q?Str=F6mbergson?= , clefevre@citeweb.net, stable@FreeBSD.org Subject: Re: Parallel kernel make Was Re: kernel.debug (was Re: HEADS UP! Always use the 'make buildkernel' target to make your kernels) References: Reply-To: clefevre@citeweb.net X-Face: V|+c;4!|B?E%BE^{E6);aI.[<97Zd*>^#%Y5Cxv;%Y[PT-LW3;A:fRrJ8+^k"e7@+30g0YD0*^^3jgyShN7o?a]C la*Zv'5NA,=963bM%J^o]C From: Cyrille Lefevre Date: 17 Jul 2000 02:50:08 +0200 In-Reply-To: Kris Kennaway's message of "Sun, 16 Jul 2000 15:27:04 -0700 (PDT)" Message-ID: Lines: 27 User-Agent: Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.1 (Canyonlands) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Kris Kennaway writes: > On Sun, 16 Jul 2000, Joachim [iso-8859-1] Str=F6mbergson wrote: >=20 > > Just for kicks I tried doing a 'make -j4 buildkernel' with KERNEL=3DSNP= 40 > > in /etc/make.conf and /boot/loader.conf. It works, that is the make > > finished without crashing. I dunno if the binary works, nor if the > > compile was substantially faster. So, superficially, parallel make of a > > kernel does work. >=20 > Yes, there is no reason why this should not work. >=20 > > It sure consumed a lot of resources for a few minutes though. My SETI > > run ran sloowly. >=20 > Well, wouldn't you kind of expect this given what you asked the system to > do (namely run 4 tasks at once)? However, -j4 is often slightly faster > even on uniprocessor systems than -j1 (or "no -j") because it doesn't have > to wait on Disk I/O. YMMV, of course. I do make -j4 buildworld and kernel for month w/o any problems and is really faster than -j1. even on a P166 uniprocessor. Cyrille. --=20 home:mailto:clefevre%no-spam@citeweb.net Supprimer "%no-spam" pour me repon= dre. work:mailto:Cyrille.Lefevre%no-spam@edf.fr Remove "%no-spam" to answer me b= ack. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message