I can't say for certain, but it sounds like just a processor power issue. The 
process may even show a lot of idle time. Whats most important is how quickly 
the processor responds to the real-time interrupt request, and that a 
non-maskable interrupt hasn't taken priority over it. The older celerons also 
had crippled cpu cache's if I remember correctly. Right now I am running emc2 
with X-windows on a regular P800 with 512MB and I don't have any real time 
problems and this is using the on-board video.

I wonder what non-maskable interrupts could be running on your 433? I am not 
sure the interrupt priority on i386 machines off hand, anyone else?

C

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Patrick Rogers
Sent: Friday, January 18, 2008 3:39 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Is it possible to disable video to fix latency issues

Interesting.

The processor is an Intel Celeron 433 Mhz.  RAM is only 256 megs (I
have to allocate 2 to the onboard video).  When I run the latency
test over a remote X11 connection I get significantly better scores
(and the UI is much more responsive) than when using the local
display but I still get occasional realtime errors and latency overruns.

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