OK, Tried the usual reseating components etc and that PC does not want
to play. I found a Dell SFF PC in the junk pile. After hacking it to
take a full size PCI card I fired it up. Running my old Debian +
LinuxCNC 2.6.0 it runs smooth. Latency jitter is 7us,10us. Running the
latest LinuxCNC image installed on an SSD it runs rough, latency jitter
is 37us,16us. 2.6.0 won't build on the latest image but I built 2.6.13
and it also runs rough, though maybe not quite as rough as 2.7.9.
Is there any way to install an older RTAI version?
Les
On 28/06/2017 02:13, Jon Elson wrote:
On 06/27/2017 03:06 PM, Les Newell wrote:
Hmm, looks like that was a red herring. The problem is back. I can't
do any more testing because the pixies inside the old computer
finally abandoned ship and it now no longer boots. Doesn't even post.
My priority now is going to be to find a box that will run my old EMC.
Whenever this happens, I reseat the memory sticks and maybe even the
CPU and that often brings it back.
Of course, it could have suffered the capacitor plague.
Jon
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