From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: [PATCH] Add optional round-robbin read balancing to RAID1 Date: Tue, 7 Sep 2010 08:43:47 +0600 Message-ID: <20100907084347.50e705df@natsu> References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/1/M.p5FWubZb+kW6LCGNQ=w"; protocol="application/pgp-signature" Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Roy Keene Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/1/M.p5FWubZb+kW6LCGNQ=w Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 6 Sep 2010 16:14:17 -0500 (CDT) Roy Keene wrote: =20 > Below is a patch that adds support for an alternate read balancing=20 > strategy that blindly performs read round-robbin to the MD RAID1 driver.= =20 > This can be configure per array via sysfs. The default behaviour is to=20 > preserve existing behaviour (biased read balancing) >=20 > I am looking for comments and possible inclusion upstream. >=20 > The motivation behind this is that during a sequential read, under some=20 > circumstances balancing the I/O through the paths produces better=20 > throughput than reading sequentially from one device. The term is "round-robin", not "robbin", you may want to correct the word everywhere, most importantly in the actual patch. http://en.wikipedia.org/wiki/Round-robin --=20 With respect, Roman --Sig_/1/M.p5FWubZb+kW6LCGNQ=w Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkyFpuMACgkQTLKSvz+PZwj25wCdGOoAxB8Lj7lOiUOeYn0vq2Iw l2wAnj+ocV4NoTyDLREfNIdkRxLCg6hV =8SFG -----END PGP SIGNATURE----- --Sig_/1/M.p5FWubZb+kW6LCGNQ=w--