On Sun, 28 Apr 2019, Gene Heskett wrote:
Date: Sun, 28 Apr 2019 10:47:13 -0400
From: Gene Heskett <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: [email protected]
Subject: [Emc-users] stretch testing install Q
Greetings;
As I wrote yesterday except for two things.
1. It won't let me run synaptic from anyplace but its own keyboard.
2. Very consistent and poor latency in the 53 microsecond range.
Something in pam is stopping synaptic.
And is there anything I can put in the kernel command line that will
improve the latency?
To PCW, is that latency enough to bother a 5i25|7i76 combo where there is
no base thread?
It seems to be quite consistent, you can clear the stats and its back
above 50 u-s by the time you've unclicked the mouse. And I just noted
that removing the base-thread drops the servo to around 30 u-secs.
100 usec is usually fine for Mesa PCI hardware and even 500 usec would be OK
if the DPLL is used to retime things like encoder count and step count
sampling
Thanks all.
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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Peter Wallace
Mesa Electronics
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