Re: max DO speed

On Friday 02 March 2007 03:34 pm, Daniele Verrocchio wrote:
> Hi,
>
> this is my system configuration:
>
> - Pentium core dueo processor;
>
> - NI PCI – 6250 DAQ ;
>
> - Linux ubuntu distribution version 6.06 lts, whit 2.6.15 kernel;
>
> - comedi and comedilib CVS version;
>
>
>
> I’m write one simple application for program PLL whit microwire
> interface. The application work correctly but too slowing, because I
> can’t to go over 176 KHz (whit clock like signal ) in user space and 260
> KHz in kernel space. The performance granted by the National Istrument
> are around 10 MHz.
>
> I have use the insn and insn list for sending write command.

The driver doesn't support waveform dio for m-series boards yet.  It is 
actually on my to-do list though, since I will need it eventually myself.  
It might not get done for some months though.  I don't know if it will do 
10MHz, since in my experience NI's dma chip (mite) performs far worse than 
they advertise.  It will probably do a couple MHz though.

-- 
Frank