From owner-freebsd-multimedia@FreeBSD.ORG Thu Jan 5 11:58:04 2006 Return-Path: X-Original-To: freebsd-multimedia@freebsd.org Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3F40516A41F; Thu, 5 Jan 2006 11:58:04 +0000 (GMT) (envelope-from hselasky@c2i.net) Received: from swip.net (mailfe04.swip.net [212.247.154.97]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2162043D5A; Thu, 5 Jan 2006 11:58:02 +0000 (GMT) (envelope-from hselasky@c2i.net) X-T2-Posting-ID: gvlK0tOCzrqh9CPROFOFPw== X-Cloudmark-Score: 0.000000 [] Received: from mp-217-136-25.daxnet.no ([193.217.136.25] verified) by mailfe04.swip.net (CommuniGate Pro SMTP 5.0.2) with ESMTP id 72775759; Thu, 05 Jan 2006 12:58:00 +0100 From: Hans Petter Selasky To: freebsd-multimedia@freebsd.org Date: Thu, 5 Jan 2006 12:57:56 +0100 User-Agent: KMail/1.7 References: <20060104224705.3bb21deb.ariff@FreeBSD.org> <20060105032333.GA2865@zi025.glh.mhn.de> <20060105123544.73fb400a.ariff@FreeBSD.org> In-Reply-To: <20060105123544.73fb400a.ariff@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200601051258.00351.hselasky@c2i.net> Cc: Simon Barner , Ariff Abdullah Subject: Re: Testing request: GIANT Free snd_solo(4) X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: hselasky@c2i.net List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Jan 2006 11:58:04 -0000 On Thursday 05 January 2006 05:35, Ariff Abdullah wrote: > [CC: freebsd-multimedia@] > > On Thu, 5 Jan 2006 04:23:34 +0100 > > > > > Results: When I set hw.snd.pcm0.buffersize to 4096, the sound chokes > > (without any additional load). I took 8192 instead. > The sound system should be a little more intelligent, and scale the buffer size according to the sample rate used, instead of using a fixed buffer size. 8000 bytes of buffer at 8kHz gives 1 second of delay. 8000 bytes of buffer at 96kHz gives 83ms of delay. I would recommend 2*50ms or 2*25ms of buffer. > I'm assuming the default buffersize (16k) is fair enough. > --HPS