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

[Mark Wickens]

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.