From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933526Ab2GKXy2 (ORCPT ); Wed, 11 Jul 2012 19:54:28 -0400 Received: from mail-gg0-f174.google.com ([209.85.161.174]:48044 "EHLO mail-gg0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753079Ab2GKXy1 (ORCPT ); Wed, 11 Jul 2012 19:54:27 -0400 MIME-Version: 1.0 Date: Wed, 11 Jul 2012 18:54:26 -0500 Message-ID: Subject: lots of APIC_TMICT exit on VM with assigned NIC From: sheng qiu To: kvm , linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, i saw lots of APIC_TMICT exits while running a linux guest with assigned NIC. The APIC_TMICT exits is only a little fewer than the number of injected interrupts while handling network traffic on the assigned NIC. The network traffic was generated by running netperf on another machine targeted at the VM. Is this normal? if not, what kind of problem may cause it? Thanks, Sheng