From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: netfront/netback multiqueue exhausting grants Date: Thu, 21 Jan 2016 10:12:27 +0000 Message-ID: <1453371147.26343.203.camel@citrix.com> References: <1453292623.26343.95.camel@citrix.com> <569F9C6A.9070008@oracle.com> <1453301571.26343.127.camel@citrix.com> <569FA195.1020104@citrix.com> <569FA361.60102@oracle.com> <1453302978.26343.134.camel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1453302978.26343.134.camel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Boris Ostrovsky , David Vrabel , xen-devel Cc: Wei Liu List-Id: xen-devel@lists.xenproject.org T24gV2VkLCAyMDE2LTAxLTIwIGF0IDE1OjE2ICswMDAwLCBJYW4gQ2FtcGJlbGwgd3JvdGU6Cj4g T24gV2VkLCAyMDE2LTAxLTIwIGF0IDEwOjEwIC0wNTAwLCBCb3JpcyBPc3Ryb3Zza3kgd3JvdGU6 Cj4gPiBPbiAwMS8yMC8yMDE2IDEwOjAyIEFNLCBEYXZpZCBWcmFiZWwgd3JvdGU6Cj4gPiA+IE9u IDIwLzAxLzE2IDE0OjUyLCBJYW4gQ2FtcGJlbGwgd3JvdGU6Cj4gPiA+ID4gT24gV2VkLCAyMDE2 LTAxLTIwIGF0IDA5OjQwIC0wNTAwLCBCb3JpcyBPc3Ryb3Zza3kgd3JvdGU6Cj4gPiA+ID4gPiBP biAwMS8yMC8yMDE2IDA3OjIzIEFNLCBJYW4gQ2FtcGJlbGwgd3JvdGU6Cj4gPiA+ID4gPiA+IFRo ZXJlIGhhdmUgYmVlbiBhIGZldyByZXBvcnRzIHJlY2VudGx5WzBdIHdoaWNoIHJlbGF0ZSB0byBh Cj4gPiA+ID4gPiA+IGZhaWx1cmUgb2YKPiA+ID4gPiA+ID4gbmV0ZnJvbnQgdG8gYWxsb2NhdGUg c3VmZmljaWVudCBncmFudCByZWZzIGZvciBhbGwgdGhlIHF1ZXVlczoKPiA+ID4gPiA+ID4gCj4g PiA+ID4gPiA+IFvCoMKgwqDCoDAuNTMzNTg5XSB4ZW5fbmV0ZnJvbnQ6IGNhbid0IGFsbG9jIHJ4 IGdyYW50IHJlZnMKPiA+ID4gPiA+ID4gW8KgwqDCoMKgMC41MzM2MTJdIG5ldCBldGgwOiBvbmx5 IGNyZWF0ZWQgMzEgcXVldWVzCj4gPiA+ID4gPiA+IAo+ID4gPiA+ID4gPiBXaGljaCBjYW4gYmUg d29ya2VkIGFyb3VuZCBieSBpbmNyZWFzaW5nIHRoZSBudW1iZXIgb2YgZ3JhbnRzCj4gPiA+ID4g PiA+IG9uCj4gPiA+ID4gPiA+IHRoZQo+ID4gPiA+ID4gPiBoeXBlcnZpc29yIGNvbW1hbmQgbGlu ZSBvciBieSBsaW1pdGluZyB0aGUgbnVtYmVyIG9mIHF1ZXVlcwo+ID4gPiA+ID4gPiBwZXJtaXR0 ZWQKPiA+ID4gPiA+ID4gYnkKPiA+ID4gPiA+ID4gZWl0aGVyIGJhY2sgb3IgZnJvbnQgdXNpbmcg YSBtb2R1bGUgcGFyYW0gKHdoaWNoIHdhcyBicm9rZW4gYnV0Cj4gPiA+ID4gPiA+IGlzIG5vdwo+ ID4gPiA+ID4gPiBmaXhlZCBvbiBib3RoIHNpZGVzLCBidXQgSSdtIG5vdCBzdXJlIGl0IGhhcyBi ZWVuIGJhY2twb3J0ZWQKPiA+ID4gPiA+ID4gZXZlcnl3aGVyZQo+ID4gPiA+ID4gPiBzdWNoIHRo YXQgaXQgaXMgYSByZWxpYWJsZSB0aGluZyB0byBhbHdheXMgdGVsbCB1c2VycyBhcyBhCj4gPiA+ ID4gPiA+IHdvcmthcm91bmQpLgo+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gSXMgdGhlcmUgYW55 IHBsYW4gdG8gZG8gYW55dGhpbmcgYWJvdXQgdGhlIGRlZmF1bHQvb3V0IG9mIHRoZQo+ID4gPiA+ ID4gPiBib3gKPiA+ID4gPiA+ID4gZXhwZXJpZW5jZT8gRWl0aGVyIGxpbWl0aW5nIHRoZSBudW1i ZXIgb2YgcXVldWVzIG9yIG1ha2luZyBib3RoCj4gPiA+ID4gPiA+IGVuZHMKPiA+ID4gPiA+ID4g Y29wZQo+ID4gPiA+ID4gPiBtb3JlIGdyYWNlZnVsbHkgd2l0aCBmYWlsdXJlIHRvIGNyZWF0ZSBz b21lIHF1ZXVlcyAob3IgYm90aCkKPiA+ID4gPiA+ID4gbWlnaHQgYmUKPiA+ID4gPiA+ID4gc3Vm ZmljaWVudD8KPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+IEkgdGhpbmsgdGhlIGNyYXNoIGFmdGVy IHRoZSBhYm92ZSBpbiB0aGUgZmlyc3QgbGluayBhdCBbMF0gaXMKPiA+ID4gPiA+ID4gZml4ZWQ/ IEkKPiA+ID4gPiA+ID4gdGhpbmsgdGhhdCB3YXMgdGhlIHB1cnBvc2Ugb2YgY2E4OGVhMTI0N2Rm ICJ4ZW4tbmV0ZnJvbnQ6Cj4gPiA+ID4gPiA+IHVwZGF0ZQo+ID4gPiA+ID4gPiBudW1fcXVldWVz Cj4gPiA+ID4gPiA+IHRvIHJlYWwgY3JlYXRlZCIgd2hpY2ggd2FzIGluIDQuMy4KPiA+ID4gPiA+ IEkgdGhpbmsgY2E4OGVhMTI0N2RmIGlzIHRoZSBzb2x1dGlvbiAtLS0gaXQgd2lsbCBsaW1pdCB0 aGUgbnVtYmVyCj4gPiA+ID4gPiBvZgo+ID4gPiA+ID4gcXVldWVzLgo+ID4gPiA+IFRoYXQncyBp biA0LjQsIHdoaWNoIHRoZSBmaXJzdCBsaW5rIGF0IFswXSBjbGFpbWVkIHRvIGhhdmUgdGVzdGVk Lgo+ID4gPiA+IEkKPiA+ID4gPiBjYW4KPiA+ID4gPiBzZWUgdGhpcyBmaXhpbmcgdGhlIGNyYXNo LCBidXQgZG9lcyBpdCByZWFsbHkgZml4IHRoZSAiYWN0dWFsbHkKPiA+ID4gPiB3b3Jrcwo+ID4g PiA+IHdpdGgKPiA+ID4gPiBsZXNzIHF1ZXVlcyB0aGFuIGl0IHRyaWVkIHRvIGdldCIgaXNzdWU/ Cj4gPiAKPiA+IFRoYXQncyB3aGF0IEkgdGhvdWdodCBpdCBkb2VzIHRvby4gSSBkaWRuJ3Qgbm90 aWNlIHRoYXQgNC40IHdhcyB0ZXN0ZWQgCj4gPiBhcyB3ZWxsLCBzbyBtYXliZSBub3QuCj4gCj4g SSd2ZSBhc2tlZCB0aGUgcmVwb3J0ZXIgdG8gc2VuZCBsb2dzIGZvciB0aGUgNC40IGNhc2UgdG8g eGVuLWRldmVsLgoKVXNlciBjb25maXJtZWRbMF0gdGhhdCA0LjQgaXMgYWN0dWFsbHkgT0suCgpE aWQgc29tZW9uZSByZXF1ZXN0IHN0YWJsZSBiYWNrcG9ydHMgeWV0LCBvciBzaGFsbCBJIGRvIHNv PwoKSWFuLgoKWzBdwqBodHRwOi8vbGlzdHMueGVuLm9yZy9hcmNoaXZlcy9odG1sL3hlbi11c2Vy cy8yMDE2LTAxL21zZzAwMTEwLmh0bWwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhl bi5vcmcKaHR0cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==