From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [Xen-devel] [RFC PATCH 00/13] Persistent grant maps for xen net drivers Date: Wed, 13 May 2015 11:50:46 +0100 Message-ID: <55532C86.8020409@citrix.com> References: <1431451117-70051-1-git-send-email-joao.martins@neclab.eu> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Cc: , , , To: Joao Martins , , Return-path: Received: from smtp02.citrix.com ([66.165.176.63]:21375 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933665AbbEMKux (ORCPT ); Wed, 13 May 2015 06:50:53 -0400 In-Reply-To: <1431451117-70051-1-git-send-email-joao.martins@neclab.eu> Sender: netdev-owner@vger.kernel.org List-ID: On 12/05/15 18:18, Joao Martins wrote: > > Packet I/O Tests: > > Measured on a Intel Xeon E5-1650 v2, Xen 4.5, no HT. Used pktgen "burst 1" > and "clone_skbs 100000" (to avoid alloc skb overheads) with various pkt > sizes. All tests are DomU <-> Dom0, unless specified otherwise. Are all these measurements with a single domU with a single VIF? The biggest problem with a persistent grant method is the amount of grant table and maptrack resources it requires. How well does this scale to 1000s of VIFs? David