On 10 October 2012 13:38, Erik Friesen <e...@aercon.net> wrote: > I recently put in a 7i25 card because of latency issues. This make a > pretty rock solid system. I don't see the big difference between buffering > using a pci card, vs a usb device.
The Mesa (and Pico) cards don't buffer as such. They are still very much realtime devices. What they do do is produce PWM signals or step rates of a specified value without further interaction from the PC. In this sense they merely emulate the behaviour of the base thread. (no step rate or pwm value changes happen in the base thread on an all-software system either) This relies on them being given an updated set of values very nearly exactly 1mS later. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
