Re: [Emc-users] Latency - was Re: Which video card/driver for LinuxCNC?

[Erik F. <er...@ae...>]

It would be nice to know enough to debug latency issues, instead it feels
like kludging around with no idea what is the cause.  I suppose rtai has
some tools if you know what you are doing.

On Tue, Feb 21, 2012 at 1:12 PM, Kirk Wallace
<kwa...@wa...>wrote:

> On Tue, 2012-02-21 at 03:47 -0800, charles green wrote:
> > the allocation of computing resources seems to be a recurring theme
> > with pc based machine controllers.
> >
> > while i have wished for an accesible pocket calculator gui more than
> > one time while standing in front of a machining center console, i have
> > almost never wanted to surf the web or send emails while doing so.
> >
> > the enhanced machine controller spans a disparity between its intended
> > function and the common usage of it's supporting hardware.
>
> I tend to think the CNC PC should only have CNC software on it, it seems
> more grown up to have a purpose built machine that requires a certain
> amount of discipline to join the club, but the more I use my LinuxCNC
> PC's the more I also find I use the generic programs. While tuning, I
> need to access the Net to find what I or FF does. While setting up a new
> piece of hardware, I need to find a pin-out or spec., or download grpn
> so I can calculate a component value. (By the way, I've found the
> default gcalctool has a better Hex<->Dec feature, so I usually have both
> on the screen.) I often have my VFD PDF manual on the screen. Inkscape
> and gEdit are often running for documentation purposes. gFTP is up too,
> so I can store and share my work. It all comes in handy, and in reality,
> none of it detracts from the core LinuxCNC function.
>
> My biggest frustration now is in finding PC hardware that plays well
> with Ubuntu and doesn't kill latency. The choice here is, develop new
> purpose built hardware and maybe rebuild LinuxCNC, or spend a day or two
> swapping out hardware until I get something that works well. Aimlessly
> fiddling with PC hardware for a couple days is painful, but months and
> months of development is not one of my options.
>
> --
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/index.html
> California, USA
>
>
>
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