At Wed, 22 Aug 2007 10:48:44 -0500, Timur Tabi wrote: > > Takashi Iwai wrote: > > > The driver should deny a too large size if it's unrealistic. > > But 1MB is realistic for many systems. So, the number depends on the > > system. > > Are there any popular applications that really want a DMA buffer > larger than 64KB? It's something like an urban legend: the bigger, the better. A big buffer seems preferred for applications that require the robust operation. Such a requirement makes a little bit sense although multi-threading and adjusting the RT-priority would give you far better result. > On a side note, I notice that ALSA has some scatter-gather support. If an > application uses S/G, I presume the concept of a DMA buffer size doesn't even > apply? The SG-buffer isn't for applications but for drivers. From the application viewpoint, the buffer looks linear. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
