From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:43744) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SPvJf-00067i-RF for qemu-devel@nongnu.org; Thu, 03 May 2012 08:39:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SPvJa-0005Ci-Fw for qemu-devel@nongnu.org; Thu, 03 May 2012 08:39:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58467) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SPvJa-0005CL-7X for qemu-devel@nongnu.org; Thu, 03 May 2012 08:39:22 -0400 Message-ID: <4FA27C76.3090204@redhat.com> Date: Thu, 03 May 2012 14:39:18 +0200 From: Gerd Hoffmann MIME-Version: 1.0 References: <4F97D9E4.7090608@siemens.com> <4F97EF39.8080207@redhat.com> <4FA17A23.1060502@siemens.com> <4927FF2E-FF9A-4DDE-A6F0-3822515998F8@suse.de> <4FA27A24.7050106@siemens.com> In-Reply-To: <4FA27A24.7050106@siemens.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [HACK] hda: expose microphone instead of line-in List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: Alexander Graf , qemu-devel Hi, >>> I found another workaround: audio hw passthrough. Works nicely. And this >>> indicates that there should be still some room for improvement in the >>> device model so that Windows chooses a proper ring buffer size, no? >> >> Why? For hw passthrough, mmio doesn't go through qemu anymore, right? :) > > The point is that both pt as well as emulation suffer from the same > issue: lacking real-time support of QEMU. So I guess Windows uses a > different buffer size for the real hardware than for our HDA model. What IRQ rate you are seeing? cheers, Gerd