I tried to send a message last night, but it never showed up on the list. I
have the worst time getting messages through.
Basically, I'm on an aging Shuttle PC from 2002 with an Nvidia GeForce4 Ti
4600. When I start up latency-test, I'm in the single-digit thousands, like
6500 or so. If I play around online with Flash things (e.g. the Fantastic
Contraption game) it jumps to about 35k(ns) for the base thread jitter. If I
open glxgears it usually bumps up to 150k+, and if I maximize it, it soars
to well over 350k, sometimes almost 400k. The machine does feel laggy - slow
window redraws when dragging windows - but I'm also used to a much faster
machine now.
I've searched linuxcnc and google, and read a bunch about latency, PLCs,
CAS, et al on Wikipedia, but it's just too much to absorb, and I can't
really find targeted debug steps to try. What have you guys done to diagnose
these problems. What are some steps I can try? The manual was pretty brief
about this. Unfortunately, I know absolutely nothing about things like
network adapters and BIOS whatnots.
This is something that's been following me since the Dapper version. I've
just installed the 8.04 version, and it's quite pretty, but I can't get past
stage 1. Even the configuration wizard won't work right, because with all of
the values I'm getting, I can't even run the test buttons properly. The
motors step about once per second unless I lie heavily in my answers to
questions, like max accel and feed rates and such, and I still can't get it
to move well.
Thanks for any help. I'd love more than anything to get this sorted. Lots of
projects lined up!
-Gary
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