From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [question] lots of interrupts injected to vm when pressing some key w/o releasing Date: Mon, 24 Nov 2014 13:25:11 +0100 Message-ID: <547323A7.8050104@redhat.com> References: <201411201020560455720@sangfor.com> <201411242017440822890@sangfor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=gbk Content-Transfer-Encoding: 7bit Cc: Alex Williamson , "Zhang, Yang Z" , "Michael S.Tsirkin" , Gleb Natapov To: Zhang Haoyu , kvm Return-path: Received: from mx1.redhat.com ([209.132.183.28]:42462 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752461AbaKXMZX (ORCPT ); Mon, 24 Nov 2014 07:25:23 -0500 In-Reply-To: <201411242017440822890@sangfor.com> Sender: kvm-owner@vger.kernel.org List-ID: On 24/11/2014 13:17, Zhang Haoyu wrote: >> Hi all, >> >> If I press the one of "Insert/Delete/Home/End/PageUp/PageDown/UpArrow/ >> DownArrow/LeftArrow/RightArrow" key w/o releasing, then lots of interrupts >> will be injected to vm(win7/win2008), about 8000/s, the system become very slow, >> bringing very bad experience. But the other keys are okay. > > Sorry for wrong description, the interrupt rate is normal, > but huge numbers of vmexit induced by PIO were produced. This is expected when running Windows without paravirtualized time counter (-cpu ...,hv_time). Paolo