From mboxrd@z Thu Jan 1 00:00:00 1970 From: kedacomkernel Subject: Re: O_DIRECT to md raid 6 is slow Date: Wed, 15 Aug 2012 09:07:06 +0800 Message-ID: <201208150906343285670@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Andy Lutomirski , linux-kernel , linux-raid List-Id: linux-raid.ids T24gMjAxMi0wOC0xNSAwODo0OSBBbmR5IEx1dG9taXJza2kgPGx1dG9AYW1hY2FwaXRhbC5uZXQ+ IFdyb3RlOg0KPklmIEkgZG86DQo+IyBkZCBpZj0vZGV2L3plcm8gb2Y9L2Rldi9tZDBwMSBicz04 TQ0KPnRoZW4gaW9zdGF0IC1tIDUgc2F5czoNCj4NCj5hdmctY3B1OiAgJXVzZXIgICAlbmljZSAl c3lzdGVtICVpb3dhaXQgICVzdGVhbCAgICVpZGxlDQo+ICAgICAgICAgICAwLjAwICAgIDAuMDAg ICAyNi44OCAgIDM1LjI3ICAgIDAuMDAgICAzNy44NQ0KPg0KPkRldmljZTogICAgICAgICAgICB0 cHMgICAgTUJfcmVhZC9zICAgIE1CX3dydG4vcyAgICBNQl9yZWFkICAgIE1CX3dydG4NCj5zZGIg ICAgICAgICAgICAgMjY1LjIwICAgICAgICAgMS4xNiAgICAgICAgNTQuNzkgICAgICAgICAgNSAg ICAgICAgMjczDQo+c2RjICAgICAgICAgICAgIDI2Ni4yMCAgICAgICAgIDEuNDcgICAgICAgIDU0 LjczICAgICAgICAgIDcgICAgICAgIDI3Mw0KPnNkZCAgICAgICAgICAgICAyNjQuMjAgICAgICAg ICAxLjM4ICAgICAgICA1NC41NCAgICAgICAgICA2ICAgICAgICAyNzINCj5zZGYgICAgICAgICAg ICAgMjg2LjAwICAgICAgICAgMS44NCAgICAgICAgNTQuNzQgICAgICAgICAgOSAgICAgICAgMjcz DQo+c2RlICAgICAgICAgICAgIDI2Ni42MCAgICAgICAgIDEuMDQgICAgICAgIDU0Ljc1ICAgICAg ICAgIDUgICAgICAgIDI3Mw0KPnNkZyAgICAgICAgICAgICAyNjUuMDAgICAgICAgICAxLjAyICAg ICAgICA1NC43NCAgICAgICAgICA1ICAgICAgICAyNzMNCj5tZDAgICAgICAgICAgIDU1ODA4LjAw ICAgICAgICAgMC4wMCAgICAgICAyMTguMDAgICAgICAgICAgMCAgICAgICAxMDkwDQo+DQo+SWYg SSBkbzoNCj4jIGRkIGlmPS9kZXYvemVybyBvZj0vZGV2L21kMHAxIGJzPThNIG9mbGFnPWRpcmVj dA0KPnRoZW4gaW9zdGF0IC1tIDUgc2F5czoNCj5hdmctY3B1OiAgJXVzZXIgICAlbmljZSAlc3lz dGVtICVpb3dhaXQgICVzdGVhbCAgICVpZGxlDQo+ICAgICAgICAgICAwLjAwICAgIDAuMDAgICAx MS43MCAgIDEyLjk0ICAgIDAuMDAgICA3NS4zNg0KPg0KPkRldmljZTogICAgICAgICAgICB0cHMg ICAgTUJfcmVhZC9zICAgIE1CX3dydG4vcyAgICBNQl9yZWFkICAgIE1CX3dydG4NCj5zZGIgICAg ICAgICAgICAgODMxLjAwICAgICAgICAgOC41OCAgICAgICAgMzAuNDIgICAgICAgICA0MiAgICAg ICAgMTUyDQo+c2RjICAgICAgICAgICAgIDgzMi44MCAgICAgICAgIDguMDUgICAgICAgIDI5Ljk5 ICAgICAgICAgNDAgICAgICAgIDE0OQ0KPnNkZCAgICAgICAgICAgICA4MzIuMDAgICAgICAgICA5 LjEwICAgICAgICAyOS43OCAgICAgICAgIDQ1ICAgICAgICAxNDgNCj5zZGYgICAgICAgICAgICAg ODM4LjQwICAgICAgICAgOS4xMSAgICAgICAgMjkuNzIgICAgICAgICA0NSAgICAgICAgMTQ4DQo+ c2RlICAgICAgICAgICAgIDgyOC44MCAgICAgICAgIDcuOTEgICAgICAgIDI5Ljc5ICAgICAgICAg MzkgICAgICAgIDE0OA0KPnNkZyAgICAgICAgICAgICA4NTAuODAgICAgICAgICA4LjAwICAgICAg ICAzMC4xOCAgICAgICAgIDQwICAgICAgICAxNTANCj5tZDAgICAgICAgICAgICAxMDEyLjYwICAg ICAgICAgMC4wMCAgICAgICAxMDEuMjcgICAgICAgICAgMCAgICAgICAgNTA2DQo+DQo+SXQgbG9v a3MgbGlrZSBtZCBpc24ndCByZWNvZ25pemluZyB0aGF0IEknbSB3cml0aW5nIHdob2xlIHN0cmlw ZXMgd2hlbg0KPkknbSBpbiBPX0RJUkVDVCBtb2RlLg0KPg0Ka2VybmVsIHZlcnNpb24/DQoNCj4t LUFuZHkNCj4NCj4tLSANCj5BbmR5IEx1dG9taXJza2kNCj5BTUEgQ2FwaXRhbCBNYW5hZ2VtZW50 LCBMTEMNCj4tLQ0KPlRvIHVuc3Vic2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRoZSBsaW5l ICJ1bnN1YnNjcmliZSBsaW51eC1yYWlkIiBpbg0KPnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBt YWpvcmRvbW9Admdlci5rZXJuZWwub3JnDQo+TW9yZSBtYWpvcmRvbW8gaW5mbyBhdCAgaHR0cDov L3ZnZXIua2VybmVsLm9yZy9tYWpvcmRvbW8taW5mby5odG1s