Messages in this thread |  | | From | ganesh@cse ... | Date | Thu, 28 Nov 1996 13:09:57 +0530 (IST) | Subject | Re: DMA buffer size. |
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Peter Enderborg <pme@ufh.se> wrote:
> but it migth be a bug in xquake. The sound is a few seconds behind > when I have the kernel configured for 64k sound DMA buffer. > (On my SB16) Not so funny, and makes Win95 shine over linux. > :-( But with 8K kernel buffer, it perfect. :-) And linux > shines over M$. (Pentum 120 and 2.1.13)
I've never seen quake, but I had a similar problem when I wrote a simple audio server. I had a 64k buffer, and if the server pumped out data at 8kb/s, 8 seconds of sound would be buffered. So any change in the location of the audio sources would lag by 8 seconds. There's a SOUND_PCM_SUBDIVIDE ioctl which lets you use a smaller buffer, but it didn't work - there was still an 8 second lag. So I reduced buffer size and it worked :) This was on a 486/33MHz/8MB running SCO 3.2.1, Voxware 3.0.1-950812 with an SB16.
-- ganesh
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