From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: Re: LVM performance problems with large number of VGs Date: Fri, 1 Apr 2016 16:22:10 +0100 Message-ID: <20160401152210.GL27636@citrix.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1am0su-0000du-0c for xen-devel@lists.xenproject.org; Fri, 01 Apr 2016 15:21:16 +0000 Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Syed Mushtaq Cc: Wei Liu , "Tutkowski, Mike" , Will Stevens , Marc Vaillancourt , Pierre-Luc Dion , xen-devel@lists.xenproject.org, Tim Mackey List-Id: xen-devel@lists.xenproject.org T24gRnJpLCBBcHIgMDEsIDIwMTYgYXQgMTA6MjM6NDJBTSAtMDQwMCwgU3llZCBNdXNodGFxIHdy b3RlOgo+IEhpLAo+IAo+IEkgYW0gdGVzdGluZyBvdXQgYSBzeXN0ZW0gaW4gd2hpY2ggZWFjaCBH dWVzdCBkaXNrIGlzIG1hcHBlZCB0byBhIExVTiBvbiBhCj4gYmFja2VuZCBzdG9yYWdlLiBJIGFt IHVzaW5nIFhlbnNlcnZlciA2LjUgZm9yIHRoaXMgYW5kIGNyZWF0aW5nIGFuIFNSIHdpdGgKPiBh IHNpbmdsZSBWREkgaW5zaWRlIGl0IGZvciBlYWNoIEd1ZXN0IGRpc2suIFRoZSB3YXkgaXQgd291 bGQgd29yayBpcywgZnJvbQo+IGFuIExWTSBwb2ludCBvZiB2aWV3LCBJIHdvdWxkIGhhdmUgYSBW b2x1bWUgR3JvdXAgKFZHKSBmb3IgZWFjaCB2aXJ0dWFsCj4gZGlzayBhbmQgYSBzaW5nbGUgbG9n aWNhbCB2b2x1bWUgKExWKSBpbnNpZGUgdGhhdCBWRy4gV2hhdCBJIGFtIHNlZWluZyBpcwo+IHRo YXQgY3JlYXRpbmcgbmV3IHZvbHVtZSBncm91cHMgaXMgdGFraW5nIGEgbG90IG9mIHRpbWUuIElu IG15IHRlc3QgYWZ0ZXIKPiBjcmVhdGluZyBhYm91dCA2MDAgdm9sdW1lIGdyb3VwcywgaXQgdG9v ayBhYm91dCA0IHNlY29uZHMgdG8gY3JlYXRlIGEgbmV3Cj4gb25lLiBJIGhhdmUgb2JzZXJ2ZWQg dGhpcyB0byBiZSBhIGxpbmVhciB0cmVuZCB3aGVyZSB0aGUgbW9yZSBWR3MgSSBhZGQgdGhlCj4g c2xvd2VyIGZ1dHVyZSBvcGVyYXRpb25zIGJlY29tZS4gT3RoZXIgb3BlcmF0aW9ucyBsaWtlIGdl dHRpbmcgdGhlIGxvZ2ljYWwKPiB2b2x1bWVzIGluc2lkZSBhIFZHIGhhdmUgYWxzbyBzbG93ZWQg ZG93biAoZXZlbiB0aG91Z2ggdGhlcmUgaXMgb25seSAxIExWCj4gcGVyIFZHKS4KPiAKPiBJIHdh cyB3b25kZXJpbmcgaWYgYW55b25lIGhlcmUgZmFjZWQgYSBzaW1pbGFyIHByb2JsZW0gb3IgaGFk IHNvbWUKPiBleHBlcmllbmNlIGluIGRlYWxpbmcgd2l0aCBMVk0gYm90dGxlbmVja3MuCj4gCgpI aSB0aGlzIG1haWxpbmcgbGlzdCBpcyBmb3IgdXBzdHJlYW0gWGVuIGRldmVsb3BtZW50LiBGb3Ig WGVuU2VydmVyCnJlbGF0ZWQgc3R1ZmYgcGxlYXNlIGdvIHRvIHhlbnNlcnZlci5vcmcgYW5kIGxv b2sgZm9yIGNvcnJlY3QgY2hhbm5lbAp0aGVyZS4KCldlaS4KCj4gVGhhbmtzLAo+IC1TeWVkCgo+ IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gWGVuLWRl dmVsIG1haWxpbmcgbGlzdAo+IFhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCj4gaHR0cDovL2xpc3Rz Lnhlbi5vcmcveGVuLWRldmVsCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9y ZwpodHRwOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK