From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1RdkzA-0003fU-Lz for garchives@archives.gentoo.org; Thu, 22 Dec 2011 15:55:12 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id BEF7E21C0FD; Thu, 22 Dec 2011 15:55:01 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id 87A9B21C094 for ; Thu, 22 Dec 2011 15:54:30 +0000 (UTC) Received: from pomiocik.lan (77-253-137-24.adsl.inetia.pl [77.253.137.24]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: mgorny) by smtp.gentoo.org (Postfix) with ESMTPSA id 0E13A1B4032; Thu, 22 Dec 2011 15:54:28 +0000 (UTC) Date: Thu, 22 Dec 2011 16:55:18 +0100 From: =?UTF-8?B?TWljaGHFgiBHw7Nybnk=?= To: gentoo-dev@lists.gentoo.org Cc: vivo75@gmail.com Subject: Re: [gentoo-dev] Six month major project on Gentoo Message-ID: <20111222165518.6cd251d9@pomiocik.lan> In-Reply-To: References: <20111222044323.GA18095@comet.roc.mn.charter.com> Organization: Gentoo X-Mailer: Claws Mail 3.7.10 (GTK+ 2.24.8; x86_64-pc-linux-gnu) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA256; boundary="Sig_/f+006sk7lnGRdEl8Ax65x1s"; protocol="application/pgp-signature" X-Archives-Salt: 75263f54-1fec-47e2-a1c2-da15557da35c X-Archives-Hash: 0ce387f61a4a337ee849f02a3f8d2fc3 --Sig_/f+006sk7lnGRdEl8Ax65x1s Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Thu, 22 Dec 2011 12:11:32 +0100 Francesco Riosa wrote: > > I tried messing around with this with Amazon EC2. =C2=A0The problem was > > that due to latency I only really saw the benefit for VERY high > > levels of parallelization (think -j25+).. =C2=A0However, make isn't > > actually "distcc-aware" so it just runs 25 jobs of anything in > > parallel. =C2=A0So, anytime a makefile launched a ton of java or python > > jobs the host ground to a halt as it wasn't distributed and it was > > way more than the host could handle (especially java - which > > swapped like there was no tomorrow). >=20 > Just wanted to point out that (if there is enough memory) recent > kernels manage much better parallelism, even excess of it, once > reached the maximum load augmenting threads only bring minimal loss of > "real" time. Does that include handling complete lack of memory and heavy swapping? --=20 Best regards, Micha=C5=82 G=C3=B3rny --Sig_/f+006sk7lnGRdEl8Ax65x1s Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iJwEAQEIAAYFAk7zUusACgkQfXuS5UK5QB22vgP/dC1+W6n8BNYaKK7JLXdQqUJs LYU/fix13OFie/s/FIOhSPDdMrDTDgMxfy2rlKTXWbuIc3kBvlcFR2JsTUf3oN4x rKx/r04xbmPyIBig5qfsz9pglOR1YnZJ21LKQyChy/hWgoiJsM7NQhEyXSyxiEkM q/ommFA4gWGp7IL1mNU= =SBT0 -----END PGP SIGNATURE----- --Sig_/f+006sk7lnGRdEl8Ax65x1s--