From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: messed up changing chunk size Date: Mon, 19 Jul 2010 09:53:51 +0600 Message-ID: <20100719095351.4536a252@natsu> References: <4C439D19.4070906@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/_emPz57YQbqzixbXDzAkxDy"; protocol="application/pgp-signature" Return-path: In-Reply-To: <4C439D19.4070906@gmail.com> Sender: linux-raid-owner@vger.kernel.org To: Konstantin Svist Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/_emPz57YQbqzixbXDzAkxDy Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 18 Jul 2010 17:32:25 -0700 Konstantin Svist wrote: > I looked around and found that chunk size=20 > of 512 should work better. Not true, at least with RAID5/6 a chunk size of 64K performs faster, see http://louwrentius.blogspot.com/2010/05/raid-level-and-chunk-size-benchmark= s.html http://alephnull.com/benchmarks/sata2009/chunksize.html --=20 With respect, Roman --Sig_/_emPz57YQbqzixbXDzAkxDy Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkxDzE8ACgkQTLKSvz+PZwhEFQCeKDDjM9nqDBs2YYcHhIMF8r5z CQ0An1s7OsYUDCufwCSWHgz5aaFL9eU1 =C54o -----END PGP SIGNATURE----- --Sig_/_emPz57YQbqzixbXDzAkxDy--