The suggestion was made that arp or some other ethernet related protocol
might run every ten seconds. Disabling ethernet in the bios might be
*causing* the problem if all of the protocols are not disabled in software.
I sure don't know what would happen if something is trying to use the
ethernet and there was no hardware there.
(That's probably not the problem, but it can't hurt to suggest looking at
it.) :-{
Ken
Kenneth Lerman
Mark Kenny Products Company, LLC
55 Main Street
Newtown, CT 06470
888-ISO-SEVO
203-426-7166
----- Original Message -----
From: "Anders Wallin" <[EMAIL PROTECTED]>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: Wednesday, May 07, 2008 3:20 PM
Subject: Re: [Emc-users] 155 ms real-time delay every 10 minutes?
>> Some of the computers with on-board video handle certain things
>> in BIOS ROM routines, and these can cause upsets to the RT
>> environment on some machines. Sometimes you can turn these
>> things off, or set them to be done by Linux-level software
>> rather than "hidden" features, by turning down the X-windows
>> acceleration support in the configuration menu. I can easily
>> see how a screensaver could trigger some bit-blt activity that
>> might have side effects. I think this one is well worth pursuing.
>
> Well I tried a lot of these things in the past few days (disabling
> Ethernet in the BIOS, "NoAccel" for X, etc. etc.) but nothing worked.
>
> I've now selected another machine to run the mill and it shows around 10
> us jitter with the latency-test.
>
> I might do a few more tests with the problematic machine, but don't hold
> your breath for the solution. Would be interesting to hear if anyone
> else comes up with this 155ms every 10min.
>
> I made a wiki page with results from my two machines here:
> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Latency-Test
>
> would be nice to see what numbers other people get. There seems to be a
> preference for 'vintage' hardware (P3/P4 or similar), I wonder how much
> better at RT these are than current hardware?
>
> Anders
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
> Don't miss this year's exciting event. There's still time to save $100.
> Use priority code J8TL2D2.
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
