> -----Original Message----- > From: TJoseph Powderly [mailto:tjt...@gmail.com] > Sent: May-28-19 4:48 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Dual boot for WIN-XP and LinuxCNC > > John hello > I am sorry I did not specify which iso to use. > see https://wiki.debian.org/LTS/ for scheduled expiration dates of Debians > see http://www.linuxcnc.org/downloads/ for recommendations and > caveats > > I understand that any search you may have tried likely sent you to the > Wheezy version > The paths to Linuxcnc and many and 'a maze of twisted little passages' > with conflicting and out of date informations. > (IMO) > > Wheezy is very old and support is gone from Debian > The newer Jeesie is better but its hard to find a live iso with it. > There is a version with Debian 9 'Stretch' with RTPREEMPT > and you _may_find it better suited to a longer use life. > I did find that a bit strange since Debian hasn't been supported on the Beagles for a while either.
The real question is whether or not that will reduce my latency? External video cards (I have 3 different ones) make it worse from 26000 up to 70,000-100,000. Haven't yet tried that one Intel processor fix. The existing one with 2uS step pulses is more than adequate for stepper motors that normally have trouble above 20k steps per second anyway but my DC Servos with 1000 lines (250 line encoder) and 3200RPM max speed requires about 60K steps per second. On this PC MACH3 can do this with the 65,000Hz kernel. It's looking like Linux cannot. > So I suggest keeping what you have learned but moving to the new iso > ( editing for the charge pump is minor ) > end my 2c > > see > http://www.linuxcnc.org/testing-stretch-rtpreempt/ > for images > > HTH tomp I will do that and scrap the Wheezy DVD I burned. Thanks John _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
