Latency/jitter figures at the upper end of acceptible

monkeypants / foamcutter

LinuxCNC configuration for my foam cutting robot

GNU General Public License v3.0

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Open monkeypants opened 9 years ago

monkeypants commented 9 years ago

Jitter was 130,000 with onboard graphics (unacceptably high), but came down to 73,000 after installing a scavenged AGP graphics card.

Apparently <50,000 is non-marginal, and <35,000 is desirable. How could I bring it down further?

monkeypants commented 9 years ago

perhaps diasbling USB (and using PS2 mouse/keyboard) would improve the jitter?

monkeypants commented 9 years ago

checked: yes, there is a PS2 mouse and keyboard port on the computer, but no PS2 keyboard in stock. Possibly a PS2 mouse but status unknown.

PCI ethernet card ordered. 2* PCI LPT cards ordered.

monkeypants commented 9 years ago

PCI LPT cards - estimated delivery 28/4/2015

monkeypants commented 9 years ago

try disabling ECC in BIOS?

monkeypants commented 9 years ago

probably worth switching to beaglebone black with a CNC cape, use of on-chip timer hardware would be hard to beat. Might need an HDMI monitor...

monkeypants commented 9 years ago

PCI LPT Cards arrived - todo Install.