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

[Mark Wickens]

On Nov 28, 10:21 pm, Mark Wickens <m... at wickensonline.co.uk> wrote:
> On Nov 28, 7:19 pm, smithfarm <presnyprek... at gmail.com> wrote:
>
>
>
> > This is a problem I have been having since I first got back to VMS this
> > past August. At that time I asked for help here but wasn't competent to
> > follow any of the advice given.
>
> > Now, hopefully, I have made some progress and I'd like to give it
> > another shot.
>
> > The problem occurs when I create a DECterm from the VAX (running OpenVMS
> > v7.3) on a remote X server. The DECterm appears and I can enter commands
> > and see output - so far so good. However, there is an unreasonably long
> > delay between when I type and when the characters I type are displayed.
> > For example, if I type 30 or so characters rapidly, there is a 3-second
> > delay before the characters appear in the DECterm window.
>
> > This annoying "Nagle delay" happens regardless of the X server being
> > used (so far I've tried two: Ubuntu and Windows/Xming).
>
> > Now, in addition to the VAX I also have here an RX2600 running v8.4.
> > When I connect from Windows/Xming to this system and run DECterm, there
> > is no annoying "Nagle delay". From this I deduce that the Nagle problem
> > is somewhere in the VAX TCPIP implementation. At this point, I am using
> > OpenVMS TCPIP Services, not the alternative MultiNet.
>
> > Theoretically, I see one possible solution and one possible workaround:
> > tell disable Nagle in TCPIP Services (but how?) or run MultiNet instead
> > of TCPIP Services.
>
> > Thanks, as always, for any help, comments, suggestions.
>
> > Nathan
>
> Hi Nathan,
>
> Sorry mate have to say that I've been running remote decterms from VAX
> to linux boxes for years and have never experienced any kind of delay,
> be it using the multinet or native TCPIP stack.
>
> I don't think therefore that there is any inherent problem - or maybe
> I've just been lucky.
>
> Mark.

Actually, not that I've ever noticed, but if I type really fast (as it
not really typing but hammering the keyboard) there is a noticable
delay on refresh. The delay seems to get longer the more characters
you can get in there.

Having said that I can type pretty fast and when I'm actually typing
something sensible I don't notice any delay.

Maybe you have superhuman typing abilities!

Regards, Mark.