Re: Opening dev/dsp takes very long

[Lars Heineken <Lars.Heineken@gmx.de>]

> It affects both, but ALSA API does the setup of stream parameters once, 
> but OSS API does this multiple times because there is no way to distict 
> the configuration phase and the working phase, thus we must reconfigure
> after settings of all parameters.
> 
> If you strace aplay then you'll see that one ALSA ioctl has exactly same 
> 0.5 sec peek.

Thanks a lot for your help, I would have never found that by myself.

To test it, i modified these lines (an ugly hack, for sure)

snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, 
chip->regmap[CS8427_REG_CLOCKSOURCE]);
         //udelay(200);
         chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RUN | 
CS8427_RXDILRCK;
         snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, 
chip->regmap[CS8427_REG_CLOCKSOURCE]);
         //udelay(200);
         snd_i2c_unlock(cs8427->bus);
         end_time = 0; //jiffies + HZ / 2;

..and it works like a charm on my Terratec EWX24/96. After the next 
release I'll test the module option.

Thanks again,

Lars.




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