From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1HZTFk-0001QM-8r for garchives@archives.gentoo.org; Thu, 05 Apr 2007 14:47:56 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l35EkWVZ008179; Thu, 5 Apr 2007 14:46:32 GMT Received: from mail.ilievnet.com ([84.21.204.200]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l35EdMq5031248 for ; Thu, 5 Apr 2007 14:39:22 GMT Received: from localhost (localhost [127.0.0.1]) by mail.ilievnet.com (Postfix) with ESMTP id D07008CC39 for ; Thu, 5 Apr 2007 17:39:20 +0300 (EEST) X-Virus-Scanned: amavisd-new 2.4.1 (20060508) at ilievnet.com Received: from mail.ilievnet.com ([127.0.0.1]) by localhost (mail.ilievnet.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KR-Vp2RsvUTP for ; Thu, 5 Apr 2007 17:39:09 +0300 (EEST) Received: from ilievnet.com (ftp.ilievnet.com [10.0.1.11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: danny@ilievnet.com) by mail.ilievnet.com (Postfix) with ESMTP id B9DB78CC37 for ; Thu, 5 Apr 2007 17:39:08 +0300 (EEST) Message-ID: <46150A0A.4090305@ilievnet.com> Date: Thu, 05 Apr 2007 17:39:06 +0300 From: Daniel Iliev User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-GB; rv:1.8.1.2) Gecko/20070302 SeaMonkey/1.1.1 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] RAID-0 with LVM - is there any point? References: <20070401211824.70fb75f9@krikkit.digimed.co.uk> <4611CB98.6060800@ilievnet.com> <20070403084738.7015c9ea@krikkit.digimed.co.uk> In-Reply-To: <20070403084738.7015c9ea@krikkit.digimed.co.uk> Content-Type: multipart/mixed; boundary="------------030005020902060908020800" X-Archives-Salt: 499aa4d9-69eb-47e3-b023-2690ce7c50a1 X-Archives-Hash: f7a3ff4ee71ad9e2e4d4129acc8aef61 This is a multi-part message in MIME format. --------------030005020902060908020800 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Neil Bothwick wrote: > Hello Daniel Iliev, > > >> Actually I'd be glad to read some results from a "Fake RAID-0 vs LVM" >> tests. My bet would be that RAID-0 w/o LVM would give the best speeds >> > > Omitting LVM isn't an option, I'd lose all the flexibility that LVM > offers. I don't see why RAID-0 should be necessarily more efficient than > LVM, unless there's something superior about RAID-0's striping > algorithms. I could do some before and after tests, but I'd first have the > reformat the filesystems to remove any effects of fragmentation. > > If no one comes up with a good reason for keeping the RAID, I'll get rid > of it, running bonnie++ before and after. > > > Hi, Neil! Out of curiosity I made some tests which confirmed my expectations. What about you - did you have time (and wish) to take some performance benchmarks? I would be glad to see some additional results. I'm attaching my tests in file called "bench.txt". -- Best regards, Daniel --------------030005020902060908020800 Content-Type: text/plain; name="bench.txt" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="bench.txt" ZWNobyB5IHwgbWRhZG0gLUMgL2Rldi9tZDkgLW4yIC9kZXYvc2RhMTEgL2Rldi9zZGIxMSAt bDAKbWtmcy54ZnMgL2Rldi9tZDkKbWtkaXIgL3Rlc3QKbW91bnQgL2Rldi9tZDkgL3Rlc3QK ZGQgaWY9L2Rldi91cmFuZG9tIG9mPS90ZXN0LnJuZCBicz0xTSBjb3VudD0xNTAwCgp0aW1l IGNwIC90ZXN0LnJuZCAvdGVzdApyZWFsICAgIDBtNDQuOTgxcwp1c2VyICAgIDBtMC4wMzZz CnN5cyAgICAgMG02Ljk2N3MKCnN5bmMKCnRpbWUgbXYgL3Rlc3Qucm5kIC90ZXN0CnJlYWwg ICAgMG00Ny41MTRzCnVzZXIgICAgMG0wLjA0N3MKc3lzICAgICAwbTcuMDc3cwoKc3luYwoK dGltZSBtdiAvdGVzdC90ZXN0LnJuZCAvCnJlYWwgICAgMG01My44NjNzCnVzZXIgICAgMG0w LjA2MHMKc3lzICAgICAwbTguODg1cwoKbWRhZG0gLS1zdG9wIC9kZXYvbWQ5CnB2Y3JlYXRl IC9kZXYvc2RhMTEKcHZjcmVhdGUgL2Rldi9zZGIxMQp2Z2NyZWF0ZSB0ZXN0IC9kZXYvc2Rh MTEKdmdleHRlbmQgdGVzdCAvZGV2L3NkYjExCnZnZGlzcGxheSB8IGdyZXAgJ1RvdGFsIFBF JwogIFRvdGFsIFBFICAgICAgICAgICAgICAxNjg2Cmx2Y3JlYXRlIC1pMiAtbDE2ODYgLW5s b2d2b2wgdGVzdApta2ZzLnhmcyAvZGV2L3Rlc3QvbG9ndm9sCm1vdW50IC9kZXYvdGVzdC9s b2d2b2wgL3Rlc3QKCgp0aW1lIGNwIC90ZXN0LnJuZCAvdGVzdAoKcmVhbCAgICAxbTEyLjE4 M3MKdXNlciAgICAwbTAuMDM5cwpzeXMgICAgIDBtOS41NzBzCgpzeW5jCgp0aW1lIG12IC90 ZXN0LnJuZCAvdGVzdAoKcmVhbCAgICAwbTUxLjY0M3MKdXNlciAgICAwbTAuMDQ0cwpzeXMg ICAgIDBtNy4yNzVzCgpzeW5jCgp0aW1lIG12IC90ZXN0L3Rlc3Qucm5kIC8KCnJlYWwgICAg MW01NC45MzdzCnVzZXIgICAgMG0wLjA0N3MKc3lzICAgICAwbTkuNTU2cwoKCj09PT09PT09 PT09PT09PT09CkJPVFRPTSBMSU5FOgoKY3AgL3Rlc3Qucm5kIC90ZXN0CkxWTTogICAgICAg IDIwLjc4IFtNQi9zXQpSQUlELTA6ICAgICAzMy40MSBbTUIvc10KCm12IC90ZXN0LnJuZCAv dGVzdApMVk06ICAgICAgICAyOS4wNFtNQi9zXQpSQUlELTA6ICAgICAzMS41NltNQi9zXQoK bXYgL3Rlc3QvdGVzdC5ybmQgLwpMVk06ICAgICAgICAxMS4xMVtNQi9zXQpSQUlELTA6ICAg ICAyNy44NFtNQi9zXQoKU3RyYW5nZTogSSByZXBlYXRlZCB0aGUgbGFzdCBMVk0gdGVzdCBi ZWNhdXNlIGl0IHNlZW1lZCB0byBtZSBhcyBhIGxvdyBwZXJmb3JtYW5jZSBwZWFrLCBidXQg dGhlIHJlc3VsdCB3YXMgYWdhaW4gdmVyeSBsb3c6CnRpbWUgbXYgL3Rlc3QvdGVzdC5ybmQg LwoKcmVhbCAgICAxbTI3Ljc3NXMKdXNlciAgICAwbTAuMDUwcwpzeXMgICAgIDBtOS44MTNz Cgp3aGljaCBpczogMTUwMC84Ny43NzUgPSAxNy4wODkgW01CL3Nd --------------030005020902060908020800-- -- gentoo-user@gentoo.org mailing list