From mboxrd@z Thu Jan 1 00:00:00 1970 From: martin f krafft Subject: Re: Speeding up reading with RAID1 and --write-mostly Date: Mon, 15 Sep 2014 09:44:50 +0200 Message-ID: <20140915074450.GA27163@fishbowl.rw.madduck.net> References: <20140915141133.0a4da9ad@notabene.brown> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ikeVEW9yuYc//A+q" Return-path: Content-Disposition: inline In-Reply-To: <20140915141133.0a4da9ad@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: Roberto Spadim , NeilBrown Cc: "linux-raid@vger.kernel.org" List-Id: linux-raid.ids --ikeVEW9yuYc//A+q Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable also sprach Roberto Spadim [2014-09-13 13:56 +0200]: > Try a bcache or something like it also sprach NeilBrown [2014-09-15 06:11 +0200]: > It is a persistent cache though. Oh cool, and it optimises writing too, I'll definitely will check it out, thank you! > But I suspect you will find that SD cards aren't really fast > enough for your needs. It wouldn't hurt to experiment on just an > SD card and see how it performs. Sure, and this will be much easier to set up. However, even my cheap camera SD outperforms my rotational disk, especially with dmcrypt=E2=80=A6 --=20 @martinkrafft | http://madduck.net/ | http://two.sentenc.es/ =20 an egg has the shortest sex-life of all: if gets laid once; it gets eaten once. it also has to come in a box with 11 others, and the only person who will sit on its face is its mother. =20 spamtraps: madduck.bogus@madduck.net --ikeVEW9yuYc//A+q Content-Type: application/pgp-signature; name="digital_signature_gpg.asc" Content-Description: Digital signature (see http://martin-krafft.net/gpg/sig-policy/999bbcc4/current) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQLvBAEBCgDZBQJUFpjvwBEaaHR0cDovL21hcnRpbi1rcmFmZnQubmV0L2dwZy9z aWctcG9saWN5LzU1Yzk4ODJkOTk5YmJjYzQvMjAxMTAxMjQxMTI1P3NoYTUxMnN1 bT0xY2FkOTZmZDI3ZDMyMzNmNTNlMjI4NDk1MzM2NDgxMDdlNWVlOGQ1YmU2NTUy NTFkNzRjOGYxYzVjM2JjNDJmMjMwNGZhNTE1MTUwZjdiZDRkZDA1ZTk4MTk5MjRm MDQ5NTEzZWU5OTYyY2E3MTcwOWY4MWQ5NDUxNTg1MmJkOAAKCRBVyYgtmZu8xDsT EACnuM5bwzNvyUJc7DLhWlMDkda+F9GhErExCSIanyFqVHB8/DO2EkAg/+oJHIS0 0++Gyj0jdeLIKxcgZHmXzkhIJJEIPGbwBs5XimNyO2xRauOtrdd/LRbiwFOorE1M X/yMruj8SISoDilAu6Y4eNtV+5l+3fhah3ZFUg4UU0mQCWVQLZ0VRYA+efx5sdNE iTODR10QOATy1/Jbqhe0Jl2L3JtUsh3d1mKEL7ENbnzh/Ud73LIblKV910E2UP8P cMbFEyZbXE4XjvbH2xXaR9SgypPulPaK97DEHrCXfrUSGBpRf3jlzoGTEBxOhRaa jqiHE14mkx2xqi1Ierw/bQq8vEubwQDpyOKXcx0FUyBQ9WaJvKG/s9S3F/5dpT6S uJ2V5oR2z3PMIaFzQJAoN6ZoM6Tvq19hTus5meJ7seg+RRkLE9U1kD+qMfrSyqJP WgGPJ8e0tuDdHC6iBNlr4lOYI+2B5sxfp4vtlmxApN7H+3yfdxhAf7J4NzFPmIBq Gkhjk2pys0FxDTSwZhKTon5pvNqMkrovoAeoeaQW5u03wKavnMdo6kTKWdWsfdZQ Ucwt3JthNT8aXVY+qgog/KnHCbcq5T46TDKsS8grvVbkLtm4fw8iddZZ3oNjTpaS 4vkzLlkAMpKndp7XeixMy2GFSPU8s7vtgZUqF7j2H2CP+A== =Iz+r -----END PGP SIGNATURE----- --ikeVEW9yuYc//A+q--