From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id B674D7CA0 for ; Mon, 11 Apr 2016 18:11:03 -0500 (CDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by relay2.corp.sgi.com (Postfix) with ESMTP id 6DD79304053 for ; Mon, 11 Apr 2016 16:11:00 -0700 (PDT) Received: from ipmail06.adl6.internode.on.net (ipmail06.adl6.internode.on.net [150.101.137.145]) by cuda.sgi.com with ESMTP id fYcfPH3Lgk5cfIC9 for ; Mon, 11 Apr 2016 16:10:58 -0700 (PDT) Date: Tue, 12 Apr 2016 09:10:56 +1000 From: Dave Chinner Subject: Re: about the xfs performance Message-ID: <20160411231056.GD9088@dastard> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Songbo Wang Cc: xfs@oss.sgi.com T24gTW9uLCBBcHIgMTEsIDIwMTYgYXQgMTA6MTQ6MDZQTSArMDgwMCwgU29uZ2JvIFdhbmcgd3Jv dGU6Cj4gSGkgeGZzZXJzOgo+IAo+IEkgZ290IHNvbWUgdHJvdWJsZXMgb24gdGhlIHBlcmZvcm1h bmNlIG9mICB4ZnMuCj4gVGhlIGVudmlyb25tZW50IGlzICwKPiAgICAgIHhmcyB2ZXJzaW9uIGlz IDMuMi4xLAo+ICAgICAgY2VudG9zIDcuMSwKPiAgICAgIGtlcm5lbCB2ZXJzaW9uOjMuMTAuMC0y MjkuZWw3Lng4Nl82NC4KPiAgICAgIHBjaWUtc3NkIGNhcmQsCj4gICAgICBta2ZzOiBta2ZzLnhm cyAvZGV2L2hpb2EyIC1mIC1uIHNpemU9NjRrIC1pIHNpemU9NTEyIC1kIGFnY291bnQ9NDAgLWwK PiBzaXplPTEwMjRtLgo+ICAgICAgbW91bnQ6IG1vdW50IC9kZXYvaGlvYTIgL21udC8gIC10IHhm cyAtbwo+IHJ3LG5vZXhlYyxub2Rldixub2F0aW1lLG5vZGlyYXRpbWUsbm9iYXJyaWVyLGRpc2Nh cmQsaW5vZGU2NCxsb2dic2l6ZT0yNTZrLGRlbGF5bG9nCj4gSSB1c2UgdGhlIGZvbGxvd2luZyBj b21tYW5kIHRvIHRlc3QgaW9wczogZmlvIC1pb2VuZ2luZT1saWJhaW8gLWJzPTRrCj4gLWRpcmVj dD0xIC10aHJlYWQgLXJ3PXJhbmR3cml0ZSAtc2l6ZT01MEcgLWZpbGVuYW1lPS9tbnQvdGVzdCAt bmFtZT0iRUJTCj4gNEtCIHJhbmR3cml0ZSB0ZXN0IiAtaW9kZXB0aD02NCAtcnVudGltZT02MAo+ IFRoZSByZXN1bHRzIGlzIG5vcm1hbCBhdCB0aGUgYmVnaW5uaW5nIHdoaWNoIGlzIGFib3V0IDIx MGvCse+8jGJ1dCBzb21lCj4gc2Vjb25kcyBsYXRlciwgdGhlIHJlc3VsdHMgZG93biB0byAxOWvC sS4KCkxvb2tzIGxpa2UgdGhlIHdvcmtsb2FkIHJ1bnMgb3V0IG9mIGxvZyBzcGFjZSBkdWUgdG8g YWxsIHRoZQphbGxvY2F0aW9uIHRyYW5zYWN0aW9ucyBiZWluZyBsb2dnZWQsIHdoaWNoIHRoZW4g Y2F1c2VzIG5ldwp0cmFuc2FjdGlvbnMgdG8gc3RhcnQgdGFpbCBwdXNoaW5nIHRoZSBsb2cgdG8g Zmx1c2ggZGlydHkgbWV0YWRhdGEuClRoaXMgaXMgbmVlZGVkIHRvIHRvIG1ha2UgbW9yZSBzcGFj ZSBpbiB0aGUgbG9nIGZvciBvbiBpbmNvbWluZyBkaW8Kd3JpdGVzIHRoYXQgcmVxdWlyZSBhbGxv Y2F0aW9uIHRyYW5zYWN0aW9ucy4gVGhpcyB3aWxsIGJsb2NrIElPCnN1Ym1pc3Npb24gdW50aWwg dGhlcmUgaXMgc3BhY2UgYXZhaWxhYmxlIGluIHRoZSBsb2cuCgpMZXQncyBmYWNlIGl0LCBhbGwg dGhhdCB0ZXN0IGRvZXMgaXMgY3JlYXRlIGEgbWFzc2l2ZWx5IGZyYWdtZW50ZWQKNTBHQiBmaWxl LCBzbyB5b3UncmUgZ29pbmcgdG8gaGF2ZSBhIGxvdCBvZiBtZXRhZGF0YSB0byBsb2cuIERvIHRo ZQptYXRocyAtIGlmIGl0IHJ1bnMgYXQgMjAwa2lvcHMgZm9yIGEgZmV3IHNlY29uZHMsIGl0J3Mg Y3JlYXRlZCBhCm1pbGxpb24gZXh0ZW50cy4KCkFuZCBpdCdzIGRvaW5nIHJhbmRvbSBpbnNlcnQg b24gdGhlIGV4dGVudCBidHJlZSwgc28KaXQncyByZXBlYXRlZGx5IGRpcnR5aW5nIHRoZSBlbnRp cmUgZXh0ZW50IGJ0cmVlLiBUaGlzIHdpbGwgdHJpZ2dlcgpqb3VybmFsIGNvbW1pdHMgcXVpdGUg ZnJlcXVlbnRseSBhcyB0aGlzIGlzIGEgbGFyZ2UgYW1vdW50IG9mCm1ldGFkYXRhIHRoYXQgaXMg YmVpbmcgZGlydGllZC4gZS5nLiBhdCA1MDAgZXh0ZW50IHJlY29yZHMgcGVyIDRrCmJsb2NrLCBh IG1pbGxpb24gZXh0ZW50cyB3aWxsIHJlcXVpcmUgMjAwMCBsZWFmIGJsb2NrcyB0byBzdG9yZSB0 aGVtCmFsbC4gVGhhdCdzIDgwTUIgb2YgbWV0YWRhdGEgcGVyIG1pbGxpb24gZXh0ZW50cyB0aGF0 IHRoaXMgd29ya2xvYWQKaXMgZ2VuZXJhdGluZyBhbmQgcmVwZWF0ZWRseSBkaXJ0eWluZy4KClRo ZW4gdGhlcmUncyBhbHNvIG90aGVyIG1ldGFkYXRhLCBsaWtlIHRoZSBmcmVlIHNwYWNlIGJ0cmVl cywgdGhhdAppcyBhbHNvIGJlaW5nIHJlcGVhdGVkbHkgZGlydGllZCwgZXRjLCBzbyBpdCB3b3Vs ZCBub3QgYmUgdW5leHBlY3RlZAp0byBzZWUgYSB3b3JrbG9hZCBsaWtlIHRoaXMgb24gaGlnaCBJ T1BTIGRldmljZXMgYWxsb2NhdGluZyAxMDBNQiBvZgptZXRhZGF0YSBldmVyeSBmZXcgc2Vjb25k cyBhbmQgdGhlIGFtb3VudCBiZWluZyBqb3VybmFsbGVkIHN0ZWFkaWx5CmluY3JlYXNpbmcgdW50 aWwgdGhlIGZpbGUgaXMgZnVsbHkgcG9wdWxhdGVkLgoKPiBJIGRpZCBhIHNlbm9uZCB0ZXN0ICwK PiAgICAgIHVtb3VudCB0aGUgL2Rldi9oaW9hMiwKPiAgICAgIGZpbyAtaW9lbmdpbmU9bGliYWlv IC1icz00ayAtZGlyZWN0PTEgIC10aHJlYWQgLXJ3PXJhbmR3cml0ZQo+IC1maWxlbmFtZT0vZGV2 L2hpb2EyICAtbmFtZT0iRUJTIDhLQiByYW5kd3JpdGUgdGVzdCIgLWlvZGVwdGg9NjQgLXJ1bnRp bWU9NjAKPiBUaGUgcmVzdWx0cyB3YXMgbm9ybWFsLCB0aGUgaW9wcyBpcyBhYm91dCAyMTBrwrEg YWxsIHRoZSB0aW1lLgoKVGhhdCdzIG5vdCBhbiBlcXVpdmFsZW50IHRlc3QgLSBpdCdzIGJlaW5n IHJ1biBkaXJlY3QgdG8gdGhlIGJsb2NrCmRldmljZSwgbm90IHRvIGEgZmlsZSBvbiB0aGUgZmls ZXN5dGVtIG9uIHRoZSBibG9jayBkZXZpY2UsIGFuZCBzbwp5b3Ugd29uJ3Qgc2VlIGFydGlmYWN0 cyB0YWh0IGFyZSBhIHJlc3VsdCBvZiBjcmVhdGluZyB3b3JzdCBjYXNlCmZpbGUgZnJhZ21lbnRh dGlvbi4uLi4KCkNoZWVycywKCkRhdmUuCi0tIApEYXZlIENoaW5uZXIKZGF2aWRAZnJvbW9yYml0 LmNvbQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KeGZz IG1haWxpbmcgbGlzdAp4ZnNAb3NzLnNnaS5jb20KaHR0cDovL29zcy5zZ2kuY29tL21haWxtYW4v bGlzdGluZm8veGZzCg==