Re: [Linux-decnet-user] LAT for linux using DECserver 90L+ and VT420

[Christine C. <Chr...@go...>]

John Forkosh wrote:
> I have a small thinwire soho lan with some VAXstations,
> some PC's running (slackware 12.1) linux with DECnet and LAT
> for linux, and a DECserver 90L+ with some VT420's.
> The VT's connect to the VAXstations fine and dandy.
> They also connect okay to the PC's, but with one small glitch.
>       Every 11th or 12th or 13th or 14th (seems to vary
> randomly in that range) keystroke isn't executed or echoed.
> It seems to get buffered somewhere, though, because as soon
> as I press another key, then both keystrokes are executed
> and echoed immediately.  What's this behavior called (so that
> I can google it which I've failed to do so far), and how
> can I fix it (if it's fixable)?

>From the description it sounds like the keystroke echo is being buffered
in the circuit timer buffer inside latd. Though that's odd because it's
not specific to the 90L server. I do have a couple of 90L (not +)
servers but I no longer have a power supply to drive them Then again,
I'm also away from home at the moment so I can't do much off-hand anyway
I'm afraid.

The next thing to do would be to strace the latd daemon (Warning, this
generates a lot of output!) with timestamps (strace -tt -p <pid>) to see
just at which point the keystroke is being delayed.


> Thanks a lot,
> John <jo...@fo...>
> P.S.  Just subscribed to this list.  But can't seem to
> find an archive for it.  Where's that at?
> 

The list archive URL is on the project home page, but it had a spurious
full-stop in it, so it didn't work! I've fixed that, and the right place
is here:

http://sourceforge.net/mailarchive/forum.php?forum_name=linux-decnet-user

Feel free to send the strace output to the list, but don't expect a fast
response - they are hard work to search through, I'm frightfully busy
(even when not away from home), and I haven't looked much at the latd
code in a couple of years now ... sorry. LAT is pretty much a one-woman
project unless you fancy digging into the code yourself!

Chrissie