From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [question] virtio-blk performance degradationhappened with virito-serial Date: Fri, 19 Sep 2014 15:35:44 +0200 Message-ID: <541C3130.8080100@redhat.com> References: <201408291545282753855@sangfor.com> <20140829143849.GA8909@grmbl.mre> <201409012038178763909@sangfor.com> <201409012052442706397@sangfor.com> <20140902063637.GG14171@grmbl.mre> <20140919055333.GA6889@fam-t430.nay.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Zhang Haoyu , qemu-devel , kvm To: Fam Zheng , Amit Shah Return-path: In-Reply-To: <20140919055333.GA6889@fam-t430.nay.redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org List-Id: kvm.vger.kernel.org Il 19/09/2014 07:53, Fam Zheng ha scritto: > Any ideas? The obvious, but hardish one is to switch to epoll (one epoll fd per AioContext, plus one for iohandler.c). This would require converting iohandler.c to a GSource. Paolo