From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Kierski Subject: RE: best base / worst case RAID 5,6 write speeds Date: Mon, 4 Jan 2016 18:56:03 +0000 Message-ID: References: <22128.11867.847781.946791@quad.stoffel.home> <22128.35881.182823.556362@quad.stoffel.home> <5672BB7A.4050808@turmel.org> <567339F0.9000209@turmel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: Content-Language: en-US Sender: linux-raid-owner@vger.kernel.org To: "doug@easyco.com" Cc: "linux-raid@vger.kernel.org" List-Id: linux-raid.ids SGV5IERvdWcsDQoNCkknbSB0cnlpbmcgdG8gZ2V0IHRoZSBwYXRjaCB0byB3b3JrIGFuZCBub3Qg aGF2aW5nIG11Y2ggbHVjay4NCg0KSSdtIGd1ZXNzaW5nIHRoYXQgeW91J3JlIHVzaW5nIHRoZSBn ZW5lcmljIENlbnRPUyA3IGtlcm5lbCAoMy4xMCkuICBJJ20gdXNpbmcgYSAzLjE4LjQga2VybmVs LCBzbyB0aGVyZSB3ZXJlIGEgZmV3IGNoYW5nZXMgSSBoYWQgdG8gbWFrZSB0byBnZXQgdGhlIHBh dGNoIHRvIGFwcGx5LiAgQnV0IHRoZXkgd2VyZW4ndCBzaWduaWZpY2FudCBhcyBmYXIgYXMgSSBj YW4gdGVsbCwgYW5kIHNob3VsZG4ndCBoYXZlIGNhdXNlZCB0aGUgRmFzdFdyaXRlIGNvZGUgdG8g YmUgaWdub3JlZC4NCg0KVGhlcmUgbXVzdCBiZSBhZGRpdGlvbmFsIGNoYW5nZXMgaW4gdGhlIGtl cm5lbCB0aGF0IGFyZSBuZWNlc3NhcnkuICBXaGVuIEkgY3JlYXRlIHRoZSBzcGVjaWFsIGNhc2Ug TURSYWlkLCBhbmQgdGhlbiB1c2UgdGhlIHNwZWNpYWwgY2FzZSBJTyBwYXR0ZXJuLCBJIHNlZSBv bmx5IHRoZSBkZWJ1ZyBtZXNzYWdlcyBpbmRpY2F0aW5nIHRoYXQgdGhlIEZhc3RXcml0ZSBjb2Rl IHdhcyBpZ25vcmVkLiANCg0KSSd2ZSBhZGRlZCBtb3JlIGRlYnVnZ2luZyBjb2RlIHRvIHRyeSB0 byB1bmRlcnN0YW5kIHdoYXQncyBnb2luZyBvbi4gIEl0IHR1cm5zIG91dCB0aGF0IG5vIG1hdHRl ciB3aGF0IEkgZG8sIG5vIG1hdHRlciBob3cgSSBjb25maWd1cmUgdGhlIE1EUmFpZCwgYW5kIG5v IG1hdHRlciB3aGF0IElPIHBhdHRlcm4gSSB1c2UsIHRoZSBzaXplIG9mIHRoZSBJTyBpcyBzdWNo IHRoYXQgaXQgZG9lc24ndCBjb25mb3JtIHRvIHRoZSBjcml0ZXJpYSByZXF1aXJlZCB0byBjYWxs IEZhc3RXcml0ZS4gIEl0IHNlZW1zIHRoYXQgaW4gdGhlIDMuMTggLjQga2VybmVsLCBJTydzIGFy ZSBicm9rZW4gdXAgYmVmb3JlIGNhbGxpbmcgTURSYWlkJ3MgbWFrZV9yZXF1ZXN0IGZ1bmN0aW9u LiAgVGhlcmUgZG9lc24ndCBzZWVtIHRvIGJlIGFuIG9idmlvdXMgcmVsYXRpb25zaGlwIGJldHdl ZW4gdGhlIHNpemUgYmVpbmcgcGFzc2VkIGluLCBhbmQgdGhlIGNodW5rIHNpemUgdGhhdCdzIGNv bmZpZ3VyZWQgYnkgbWRhZG0uDQoNCkF0IGZpcnN0LCBpdCBhcHBlYXJlZCB0aGF0IGl0IHdhcyB0 aGUgbWluaW11bSBJTyBzaXplIGJlaW5nIHVzZWQuICBCdXQgdGhlbiBJIHRyaWVkIHNldHRpbmcg dGhlIG1pbmltdW0gSU8gYW5kIG9wdGltYWwgSU8gdG8gdGhlIHNhbWUgdGhpbmcuICBUaGUgcmVz dWx0aW5nIElPJ3MgYXJlIG5vdyAxLzIgdGhlIHNpemUgb2YgdGhlIG1pbmltdW0gSU8uLi4uIHdo aWNoIGlzIG5vdCB0aGUgc2l6ZSBvZiB0aGUgb3B0aW1hbCBJTyAod2hpY2ggaXMgdGhlIGNodW5r IHNpemUgKiBudW1iZXIgb2YgZGF0YSBkaXNrcykuDQoNCkJvYiBLaWVyc2tpDQpTZW5pb3IgU3Rv cmFnZSBQZXJmb3JtYW5jZSBFbmdpbmVlcg0KQ3JheSBJbmMuDQozODAgSmFja3NvbiBTdHJlZXQN ClN1aXRlIDIxMA0KU3QuIFBhdWwsIE1OIDU1MTAxDQpUZWxlOiA2NTEtOTY3LTk1OTANCkZheDog IDY1MS02MDUtOTAwMQ0KQ2VsbDogNjUxLTg5MC03NDYxDQoNCg==