[Info-vax] Nagle problem in remote DECterm on VAX, revisited

smithfarm presnypreklad at gmail.com
Mon Nov 29 15:52:42 EST 2010


Hello Hans - problem is already solved, thanks to Uli. Here are my 
answers to your questions:

> Sending characters may be inefficient: wasn't that where LAT performed
> better than cterm/DECnet?

Yes, LAT is better even than the correctly functioning remote X over 
TCP/IP. However, what I was seeing was obviously such a huge delay that 
immediately you knew it was a bug.

Also, what I needed was a DECterm on a Linux/Windows box - so LAT was 
not an option.

> What protocol are you using between the Xsystems: DECnet or IP (or
> LAT)? What happens if you change to one of the others?

See above.

> How much cpu load has the Xclient during these sessions while you're
> hammering away on the keyboard of the Xserver?

Very low - only one user, and no applications running.

> A somewhat less likely issue: how busy is your network during all
> this, are there games being played or other network intensive things
> going on?

Home LAN (behind a NAT firewall) - the only other user is my wife, who 
sometimes ties up our 512 kbps Internet connection, but who otherwise 
doesn't use the LAN at all.

> No answers I'm afraid but *lots* of things to check....

Thanks for taking the time to reply. Turns out it was a known bug in 
DECwindows v1.2-6. That also explains why the problematic behavior was 
not seen on the RX2600 with OpenVMS v8.4.

Nathan



More information about the Info-vax mailing list