From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 7 Jul 2003 20:39:11 +0100 From: Jamie Lokier Subject: Re: 2.5.74-mm1 Message-ID: <20030707193911.GB10836@mail.jlokier.co.uk> References: <20030703023714.55d13934.akpm@osdl.org> <20030707152339.GA9669@mail.jlokier.co.uk> <200307071955.58774.phillips@arcor.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Davide Libenzi Cc: Daniel Phillips , Mel Gorman , Andrew Morton , Linux Kernel Mailing List , Linux Memory Management List List-ID: Davide Libenzi wrote: > Try to play with SNDCTL_DSP_SETFRAGMENT. Last time I checked the kernel > let you set a dma buf for 0.5 up to 1 sec of play (upper limited by 64Kb). > Feeding the sound card with 4Kb writes will make you skip after about 50ms > CPU blackout at 44KHz 16 bit. RealPlayer uses 16Kb feeding chunks that > makes it able to sustain up to 200ms of blackout. Large buffers are fine for streaming, provided you aren't sliding the volume or graphic equaliser. I find xmms annoying in this regard: I adjust the eq and wait some absurd length of time (fully tenths of a second :) to hear the feedback. Large buffers are useless for games or telephony. -- Jamie -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org