From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xusangdi Subject: chooseleaf may cause some unnecessary pg migrations Date: Tue, 13 Oct 2015 08:22:36 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from smtp.h3c.com ([221.12.31.13]:25081 "EHLO h3cmg01-ex.h3c.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752389AbbJMIWQ (ORCPT ); Tue, 13 Oct 2015 04:22:16 -0400 Content-Language: zh-CN Sender: ceph-devel-owner@vger.kernel.org List-ID: To: "sweil@redhat.com" Cc: "ceph-devel@vger.kernel.org" SGkgU2FnZSwNCg0KUmVjZW50bHkgd2hlbiBJIHdhcyBsZWFybmluZyBhYm91dCB0aGUgY3J1c2gg cnVsZXMgSSBub3RpY2VkIHRoYXQgdGhlIHN0ZXAgY2hvb3NlbGVhZiBtYXkgY2F1c2Ugc29tZSB1 bm5lY2Vzc2FyeSBwZyBtaWdyYXRpb25zIHdoZW4gT1NEcyBhcmUgb3V0ZWQuDQpGb3IgZXhhbXBs ZSwgZm9yIGEgY2x1c3RlciBvZiA0IGhvc3RzIHdpdGggMiBPU0RzIGVhY2gsIGFmdGVyIGhvc3Qx KG9zZC4yLCBvc2QuMykgaXMgZG93biwgdGhlIG1hcHBpbmcgZGlmZmVyZW5jZXMgd291bGQgYmUg bGlrZSB0aGlzOg0KcGdpZCAgICBiZWZvcmUgPC0+IGFmdGVyICAgICAgICBkaWZmICAgIGRpZmZf bnVtDQowLjFlICAgIFs1LCAxLCAyXSA8LT4gWzUsIDEsIDddICAgICAgICAgWzJdICAgICAxDQow LjFmICAgIFswLCA3LCAzXSA8LT4gWzAsIDcsIDRdICAgICAgICAgWzNdICAgICAxDQowLjFhICAg IFswLCA0LCAzXSA8LT4gWzAsIDQsIDZdICAgICAgICAgWzNdICAgICAxDQowLjUgICAgIFs2LCAz LCAxXSA8LT4gWzYsIDAsIDVdICAgICAgICAgWzEsIDNdICAyDQowLjQgICAgIFs1LCA2LCAyXSA8 LT4gWzUsIDYsIDBdICAgICAgICAgWzJdICAgICAxDQowLjcgICAgIFszLCA3LCAwXSA8LT4gWzcs IDAsIDRdICAgICAgICAgWzNdICAgICAxDQowLjYgICAgIFsyLCAxLCA3XSA8LT4gWzAsIDcsIDRd ICAgICAgICAgWzEsIDJdICAyDQowLjkgICAgIFszLCA0LCAwXSA8LT4gWzUsIDAsIDddICAgICAg ICAgWzMsIDRdICAyDQowLjE1ICAgIFsyLCA2LCAxXSA8LT4gWzYsIDAsIDVdICAgICAgICAgWzEs IDJdICAyDQowLjE0ICAgIFszLCA2LCA1XSA8LT4gWzcsIDQsIDFdICAgICAgICAgWzMsIDUsIDZd ICAgICAgIDMNCjAuMTcgICAgWzAsIDUsIDJdIDwtPiBbMCwgNSwgNl0gICAgICAgICBbMl0gICAg IDENCjAuMTYgICAgWzAsIDQsIDJdIDwtPiBbMCwgNCwgN10gICAgICAgICBbMl0gICAgIDENCjAu MTEgICAgWzQsIDcsIDJdIDwtPiBbNCwgNywgMV0gICAgICAgICBbMl0gICAgIDENCjAuMTAgICAg WzAsIDMsIDZdIDwtPiBbMCwgNywgNF0gICAgICAgICBbMywgNl0gIDINCjAuMTMgICAgWzEsIDcs IDNdIDwtPiBbMSwgNywgNF0gICAgICAgICBbM10gICAgIDENCjAuYSAgICAgWzAsIDIsIDddIDwt PiBbMCwgNywgNF0gICAgICAgICBbMl0gICAgIDENCjAuYyAgICAgWzUsIDAsIDNdIDwtPiBbNSwg MCwgNl0gICAgICAgICBbM10gICAgIDENCjAuYiAgICAgWzIsIDUsIDddIDwtPiBbNCwgNywgMF0g ICAgICAgICBbMiwgNV0gIDINCjAuMTggICAgWzcsIDIsIDRdIDwtPiBbNywgNCwgMF0gICAgICAg ICBbMl0gICAgIDENCjAuZiAgICAgWzIsIDcsIDVdIDwtPiBbNiwgNCwgMF0gICAgICAgICBbMiwg NSwgN10gICAgICAgMw0KQ2hhbmdlZCBwZyByYXRpbzogMzAgLyAzMg0KDQpJIHRyaWVkIHRvIGNo YW5nZSB0aGUgY29kZSAocGxlYXNlIHNlZSBodHRwczovL2dpdGh1Yi5jb20vY2VwaC9jZXBoL3B1 bGwvNjI0MikgYW5kIGFmdGVyIHRoZSBtb2RpZmljYXRpb24gdGhlIHJlc3VsdCB3b3VsZCBiZSBs aWtlIHRoaXM6DQpwZ2lkICAgIGJlZm9yZSA8LT4gYWZ0ZXIgICAgICAgIGRpZmYgICAgZGlmZl9u dW0NCjAuMWUgICAgWzUsIDAsIDNdIDwtPiBbNSwgMCwgN10gICAgICAgICBbM10gICAgIDENCjAu MWYgICAgWzAsIDYsIDNdIDwtPiBbMCwgNiwgNF0gICAgICAgICBbM10gICAgIDENCjAuMWEgICAg WzAsIDUsIDJdIDwtPiBbMCwgNSwgNl0gICAgICAgICBbMl0gICAgIDENCjAuNSAgICAgWzYsIDMs IDBdIDwtPiBbNiwgMCwgNV0gICAgICAgICBbM10gICAgIDENCjAuNCAgICAgWzUsIDcsIDJdIDwt PiBbNSwgNywgMF0gICAgICAgICBbMl0gICAgIDENCjAuNyAgICAgWzMsIDcsIDFdIDwtPiBbNywg MSwgNV0gICAgICAgICBbM10gICAgIDENCjAuNiAgICAgWzIsIDAsIDddIDwtPiBbMCwgNywgNF0g ICAgICAgICBbMl0gICAgIDENCjAuOSAgICAgWzMsIDUsIDFdIDwtPiBbNSwgMSwgN10gICAgICAg ICBbM10gICAgIDENCjAuMTUgICAgWzIsIDYsIDFdIDwtPiBbNiwgMSwgNF0gICAgICAgICBbMl0g ICAgIDENCjAuMTQgICAgWzMsIDcsIDVdIDwtPiBbNywgNSwgMV0gICAgICAgICBbM10gICAgIDEN CjAuMTcgICAgWzAsIDQsIDNdIDwtPiBbMCwgNCwgNl0gICAgICAgICBbM10gICAgIDENCjAuMTYg ICAgWzAsIDQsIDNdIDwtPiBbMCwgNCwgNl0gICAgICAgICBbM10gICAgIDENCjAuMTEgICAgWzQs IDYsIDNdIDwtPiBbNCwgNiwgMF0gICAgICAgICBbM10gICAgIDENCjAuMTAgICAgWzAsIDMsIDZd IDwtPiBbMCwgNiwgNV0gICAgICAgICBbM10gICAgIDENCjAuMTMgICAgWzEsIDcsIDNdIDwtPiBb MSwgNywgNV0gICAgICAgICBbM10gICAgIDENCjAuYSAgICAgWzAsIDMsIDZdIDwtPiBbMCwgNiwg NV0gICAgICAgICBbM10gICAgIDENCjAuYyAgICAgWzUsIDAsIDNdIDwtPiBbNSwgMCwgNl0gICAg ICAgICBbM10gICAgIDENCjAuYiAgICAgWzIsIDQsIDZdIDwtPiBbNCwgNiwgMV0gICAgICAgICBb Ml0gICAgIDENCjAuMTggICAgWzcsIDMsIDVdIDwtPiBbNywgNSwgMV0gICAgICAgICBbM10gICAg IDENCjAuZiAgICAgWzIsIDYsIDVdIDwtPiBbNiwgNSwgMV0gICAgICAgICBbMl0gICAgIDENCkNo YW5nZWQgcGcgcmF0aW86IDIwIC8gMzINCg0KQ3VycmVudGx5IHRoZSBvbmx5IGRlZmVjdCBJIGNh biBzZWUgZnJvbSB0aGUgY2hhbmdlIGlzIHRoYXQgdGhlIGNoYW5jZSBmb3IgYSBnaXZlbiBwZyB0 byBzdWNjZXNzZnVsbHkgY2hvb3NlIHJlcXVpcmVkIGF2YWlsYWJsZSBPU0RzIG1pZ2h0IGJlIGEg Yml0IGxvd2VyIGNvbXBhcmVkIHdpdGggYmVmb3JlLiBIb3dldmVyLCBJIGJlbGlldmUgaXQgd2ls bCBjYXVzZSBwcm9ibGVtcyBvbmx5IHdoZW4gdGhlIGNsdXN0ZXIgaXMgcHJldHR5IHNtYWxsIGFu ZCBkZWdyYWRlZC4gQW5kIGluIHRoYXQgY2FzZSwgd2UgY2FuIHN0aWxsIG1ha2UgaXQgd29ya2Fi bGUgYnkgdHVuaW5nIHNvbWUgb2YgdGhlIGNydXNobWFwIHBhcmFtZXRlcnMgc3VjaCBhcyBjaG9v c2VsZWFmX3RyaWVzLg0KDQpBbnl3YXkgSSdtIG5vdCBzdXJlIGlmIGl0IHdvdWxkIHJhaXNlIGFu eSBvdGhlciBpc3N1ZXMsIGNvdWxkIHlvdSBwbGVhc2UgcmV2aWV3IGl0IGFuZCBtYXliZSBnaXZl IG1lIHNvbWUgc3VnZ2VzdGlvbnM/IFRoYW5rIHlvdSENCg0KLS0tLS0tLS0tLQ0KQmVzdCByZWdh cmRzLA0KU2FuZ2RpDQoNCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0NCuacrOmCruS7tuWPiuWFtumZhOS7 tuWQq+acieadreW3nuWNjuS4iemAmuS/oeaKgOacr+aciemZkOWFrOWPuOeahOS/neWvhuS/oeaB r++8jOS7hemZkOS6juWPkemAgee7meS4iumdouWcsOWdgOS4reWIl+WHug0K55qE5Liq5Lq65oiW 576k57uE44CC56aB5q2i5Lu75L2V5YW25LuW5Lq65Lul5Lu75L2V5b2i5byP5L2/55So77yI5YyF 5ous5L2G5LiN6ZmQ5LqO5YWo6YOo5oiW6YOo5YiG5Zyw5rOE6Zyy44CB5aSN5Yi244CBDQrmiJbm laPlj5HvvInmnKzpgq7ku7bkuK3nmoTkv6Hmga/jgILlpoLmnpzmgqjplJnmlLbkuobmnKzpgq7k u7bvvIzor7fmgqjnq4vljbPnlLXor53miJbpgq7ku7bpgJrnn6Xlj5Hku7bkurrlubbliKDpmaTm nKwNCumCruS7tu+8gQ0KVGhpcyBlLW1haWwgYW5kIGl0cyBhdHRhY2htZW50cyBjb250YWluIGNv bmZpZGVudGlhbCBpbmZvcm1hdGlvbiBmcm9tIEgzQywgd2hpY2ggaXMNCmludGVuZGVkIG9ubHkg Zm9yIHRoZSBwZXJzb24gb3IgZW50aXR5IHdob3NlIGFkZHJlc3MgaXMgbGlzdGVkIGFib3ZlLiBB bnkgdXNlIG9mIHRoZQ0KaW5mb3JtYXRpb24gY29udGFpbmVkIGhlcmVpbiBpbiBhbnkgd2F5IChp bmNsdWRpbmcsIGJ1dCBub3QgbGltaXRlZCB0bywgdG90YWwgb3IgcGFydGlhbA0KZGlzY2xvc3Vy ZSwgcmVwcm9kdWN0aW9uLCBvciBkaXNzZW1pbmF0aW9uKSBieSBwZXJzb25zIG90aGVyIHRoYW4g dGhlIGludGVuZGVkDQpyZWNpcGllbnQocykgaXMgcHJvaGliaXRlZC4gSWYgeW91IHJlY2VpdmUg dGhpcyBlLW1haWwgaW4gZXJyb3IsIHBsZWFzZSBub3RpZnkgdGhlIHNlbmRlcg0KYnkgcGhvbmUg b3IgZW1haWwgaW1tZWRpYXRlbHkgYW5kIGRlbGV0ZSBpdCENCg==