Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934033AbcJFTpf (ORCPT ); Thu, 6 Oct 2016 15:45:35 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:56838 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933370AbcJFTp0 (ORCPT ); Thu, 6 Oct 2016 15:45:26 -0400 Date: Thu, 6 Oct 2016 21:44:15 +0200 From: Mark Brown To: Vivek Goyal Cc: Paolo Valente , Shaohua Li , Tejun Heo , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Jens Axboe , Kernel-team@fb.com, jmoyer@redhat.com, Linus Walleij , Ulf Hansson Message-ID: <20161006194415.bpl5zylqmgy4izyc@sirena.org.uk> References: <20161004202754.GJ4205@htj.duckdns.org> <257945FA-6789-4D80-8DA3-AC75640C71AE@unimore.it> <20161005144946.GA26977@htj.duckdns.org> <20161005183052.GA97491@anikkar-mbp.local.dhcp.thefacebook.com> <20161005204601.GB1754@anikkar-mbp.local.dhcp.thefacebook.com> <5699035C-6DC3-497A-9D7A-A4E43D17C3CD@unimore.it> <35D8ECB2-BE20-4A4E-9B93-951B0D5042C9@unimore.it> <20161006174943.GD17335@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ibzj7p4p2qpw744y" Content-Disposition: inline In-Reply-To: <20161006174943.GD17335@redhat.com> X-Cookie: To love is good, love being difficult. User-Agent: NeoMutt/20160916 (1.7.0) X-SA-Exim-Connect-IP: 62.214.2.210 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH V3 00/11] block-throttle: add .high limit X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: No (on mezzanine.sirena.org.uk); Unknown failure Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1137 Lines: 31 --ibzj7p4p2qpw744y Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Oct 06, 2016 at 01:49:43PM -0400, Vivek Goyal wrote: > Paolo, CFQ is legacy now and if we can come up with a proportional > IO mechanism which works reasonably well with fast devices using > blk-mq interfaces, that will be much more interesting. CFQ is not legacy yet. Until we've got scheduling in blk-mq and converted all the existing users over to blk-mq it's still going to be something that affects real, production systems that don't have any other meaningful option. --ibzj7p4p2qpw744y Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEcBAABCAAGBQJX9qmLAAoJECTWi3JdVIfQ5MUH/RcURI7NXASW75tQqapOKKow w28jEp8Q3V8q/WV/MkshJ+K1YRZ8qnFCY6mcvyiT1gV5uEokZnceKacEGtADGA16 6ZemAKD7OsCCaXNCYR1Df9e4SCxl1Y+kEMJ/jnxqaly/2v59ihAoo6afFUI9m+1t /2m8lbop/ee8kiT1rBd4AqZWzjNl+/2WDtokLanPWccHqUjH8SIGTawYwcwrNwgd Z3kf+WGeTg1QZezgR8eqVKFdUkVfPYKIdMLIgtsdO3Q332paM2Tu++Q5diuj8cVV dFV6xsPxPMwNGq02z23E3H2ItHZP98wk5RH7cxJKFXQ+7b6hqrhJwhEHsi9mqyQ= =sYkL -----END PGP SIGNATURE----- --ibzj7p4p2qpw744y--