From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: Re: [for-4.9] Re: HVM guest performance regression Date: Fri, 26 May 2017 12:01:56 -0700 (PDT) Message-ID: References: <55443407-5d99-0830-e8e0-6c2044c18ec9@suse.com> <22824.21930.185651.403388@mariner.uk.xensource.com> <2e6d9143-1abe-2f99-155f-f1071245ca41@suse.com> 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 1dEKUr-0007vL-3M for xen-devel@lists.xenproject.org; Fri, 26 May 2017 19:02:01 +0000 In-Reply-To: <2e6d9143-1abe-2f99-155f-f1071245ca41@suse.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Juergen Gross Cc: xen-devel , Stefano Stabellini , Ian Jackson , Wei Liu List-Id: xen-devel@lists.xenproject.org T24gRnJpLCAyNiBNYXkgMjAxNywgSnVlcmdlbiBHcm9zcyB3cm90ZToKPiBPbiAyNi8wNS8xNyAx ODoxOSwgSWFuIEphY2tzb24gd3JvdGU6Cj4gPiBKdWVyZ2VuIEdyb3NzIHdyaXRlcyAoIkhWTSBn dWVzdCBwZXJmb3JtYW5jZSByZWdyZXNzaW9uIik6Cj4gPj4gTG9va2luZyBmb3IgdGhlIHJlYXNv biBvZiBhIHBlcmZvcm1hbmNlIHJlZ3Jlc3Npb24gb2YgSFZNIGd1ZXN0cyB1bmRlcgo+ID4+IFhl biA0LjcgYWdhaW5zdCA0LjUgSSBmb3VuZCB0aGUgcmVhc29uIHRvIGJlIGNvbW1pdAo+ID4+IGMy NmY5MmI4ZmNlM2M5ZGYxN2Y3ZWYwMzViNTRkOTdjYmU5MzFjN2EgKCJsaWJ4bDogcmVtb3ZlIGZy ZWVtZW1fc2xhY2siKQo+ID4+IGluIFhlbiA0LjYuCj4gPj4KPiA+PiBUaGUgcHJvYmxlbSBvY2N1 cnJlZCB3aGVuIGRvbTAgaGFkIHRvIGJlIGJhbGxvb25lZCBkb3duIHdoZW4gc3RhcnRpbmcKPiA+ PiB0aGUgZ3Vlc3QuIFRoZSBwZXJmb3JtYW5jZSBvZiBzb21lIG1pY3JvIGJlbmNobWFya3MgZHJv cHBlZCBieSBhYm91dAo+ID4+IGEgZmFjdG9yIG9mIDIgd2l0aCBhYm92ZSBjb21taXQuCj4gPj4K PiA+PiBJbnRlcmVzdGluZyBwb2ludCBpcyB0aGF0IHRoZSBwZXJmb3JtYW5jZSBvZiB0aGUgZ3Vl c3Qgd2lsbCBkZXBlbmQgb24KPiA+PiB0aGUgYW1vdW50IG9mIGZyZWUgbWVtb3J5IGJlaW5nIGF2 YWlsYWJsZSBhdCBndWVzdCBjcmVhdGlvbiB0aW1lLgo+ID4+IFdoZW4gdGhlcmUgd2FzIGJhcmVs eSBlbm91Z2ggbWVtb3J5IGF2YWlsYWJsZSBmb3Igc3RhcnRpbmcgdGhlIGd1ZXN0Cj4gPj4gdGhl IHBlcmZvcm1hbmNlIHdpbGwgcmVtYWluIGxvdyBldmVuIGlmIG1lbW9yeSBpcyBiZWluZyBmcmVl ZCBsYXRlci4KPiA+Pgo+ID4+IEknZCBsaWtlIHRvIHN1Z2dlc3Qgd2UgZWl0aGVyIHJldmVydCB0 aGUgY29tbWl0IG9yIGhhdmUgc29tZSBvdGhlcgo+ID4+IG1lY2hhbmlzbSB0byB0cnkgdG8gaGF2 ZSBzb21lIHJlc2VydmUgZnJlZSBtZW1vcnkgd2hlbiBzdGFydGluZyBhCj4gPj4gZG9tYWluLgo+ ID4gCj4gPiBPaCwgZGVhci4gIFRoZSBtZW1vcnkgYWNjb3VudGluZyBzd2FtcCBhZ2Fpbi4gIENs ZWFybHkgd2UgYXJlIG5vdAo+ID4gZ29pbmcgdG8gZHJhaW4gdGhhdCBzd2FtcCBub3csIGJ1dCBJ IGRvbid0IGxpa2UgcmVncmVzc2lvbnMuCj4gPiAKPiA+IEkgYW0gbm90IG9wcG9zZWQgdG8gcmV2 ZXJ0aW5nIHRoYXQgY29tbWl0LiAgSSB3YXMgYSBiaXQgaWZmeSBhYm91dCBpdAo+ID4gYXQgdGhl IHRpbWU7IGFuZCBhY2NvcmRpbmcgdG8gdGhlIHJlbW92YWwgY29tbWl0IG1lc3NhZ2UsIGl0IHdh cwo+ID4gYmFzaWNhbGx5IHJlbW92ZWQgYmVjYXVzZSBpdCB3YXMgYSBwaWVjZSBvZiBjYXJnbyBj dWx0IGZvciB3aGljaCB3ZQo+ID4gaGFkIG5vIGp1c3RpZmljYXRpb24gaW4gYW55IG9mIG91ciBy ZWNvcmRzLgo+ID4gCj4gPiBJbmRlZWQgSSB0aGluayBmaXhpbmcgdGhpcyBpcyBhIGNhbmRpZGF0 ZSBmb3IgNC45Lgo+ID4gCj4gPiBEbyB5b3Uga25vdyB0aGUgbWVjaGFuaXNtIGJ5IHdoaWNoIHRo ZSBmcmVlbWVtIHNsYWNrIGhlbHBzID8gIEkgdGhpbmsKPiA+IHRoYXQgd291bGQgYmUgYSBwcmVy ZXF1aXNpdGUgZm9yIHJldmVydGluZyB0aGlzLiAgVGhhdCB3YXkgd2UgY2FuIGhhdmUKPiA+IGFu IHVuZGVyc3RhbmRpbmcgb2Ygd2h5IHdlIGFyZSBkb2luZyB0aGluZ3MsIHJhdGhlciB0aGFuIGp1 c3QKPiA+IGZsYWlsaW5nIGF0IHJhbmRvbS4uLgo+IAo+IEkgd2lzaCBJIHdvdWxkIHVuZGVyc3Rh bmQgaXQuCj4gCj4gT25lIGNhbmRpZGF0ZSB3b3VsZCBiZSAyTS8xRyBwYWdlcyBiZWluZyBwb3Nz aWJsZSB3aXRoIGVub3VnaCBmcmVlCj4gbWVtb3J5LCBidXQgSSBoYXZlbid0IHByb29mZWQgdGhp cyB5ZXQuIEkgY2FuIGhhdmUgYSB0cnkgYnkgZGlzYWJsaW5nCj4gYmlnIHBhZ2VzIGluIHRoZSBo eXBlcnZpc29yLgoKUmlnaHQsIGlmIEkgaGFkIHRvIGJldCwgSSB3b3VsZCBwdXQgbXkgbW9uZXkg b24gc3VwZXJwYWdlcyBzaGF0dGVyaW5nCmJlaW5nIHRoZSBjYXVzZSBvZiB0aGUgcHJvYmxlbS4K Cgo+IFdoYXQgbWFrZXMgdGhlIHdob2xlIHByb2JsZW0gZXZlbiBtb3JlIG15c3RlcmlvdXMgaXMg dGhhdCB0aGUKPiByZWdyZXNzaW9uIHdhcyBkZXRlY3RlZCBmaXJzdCB3aXRoIFNMRTEyIFNQMyAo Z3Vlc3QgYW5kIGRvbTAsIFhlbiA0LjkKPiBhbmQgTGludXggNC40KSBhZ2FpbnN0IG9sZGVyIHN5 c3RlbXMgKGd1ZXN0IGFuZCBkb20wKS4gV2hpbGUgdHJ5aW5nCj4gdG8gZmluZCBvdXQgd2hldGhl ciB0aGUgZ3Vlc3Qgb3IgdGhlIFhlbiB2ZXJzaW9uIGFyZSB0aGUgY3VscHJpdCBJCj4gZm91bmQg dGhhdCB0aGUgb2xkIGd1ZXN0IChiYXNlZCBvbiBrZXJuZWwgMy4xMikgc2hvd2VkIHRoZSBtZW50 aW9uZWQKPiBwZXJmb3JtYW5jZSBkcm9wIHdpdGggYWJvdmUgY29tbWl0LiBUaGUgbmV3IGd1ZXN0 IChiYXNlZCBvbiBrZXJuZWwKPiA0LjQpIHNob3dzIHRoZSBzYW1lIGJhZCBwZXJmb3JtYW5jZSBy ZWdhcmRsZXNzIG9mIHRoZSBYZW4gdmVyc2lvbiBvcgo+IGFtb3VudCBvZiBmcmVlIG1lbW9yeS4g SSBoYXZlbid0IGZvdW5kIHRoZSBMaW51eCBrZXJuZWwgY29tbWl0IHlldAo+IGJlaW5nIHJlc3Bv bnNpYmxlIGZvciB0aGF0IHBlcmZvcm1hbmNlIGRyb3AuCgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZl bEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK