There are some products, like Oracle 9i, that require X to run the install
process.  When we connected to the Linux guest through a large cross
country network using an X server on Windows, the response was positively
geologic.  Installing VNC on the Linux guest and connecting with the VNC
viewer gave us quite reasonable response times.  The traffic between the
x-client (the Oracle installer) and the x-server (your terminal) can be
quite heavy... I think you get a transmission for every pixel the mouse
traverses.  By putting the x-server in the Linux guest this heavy traffic
never leaves the Linux machine.

It has the added advantage of recovery.  When you break the VNC viewer
session to the VNC server, the session between the x-client (Oracle
installer) and the x-server (VNC server on Linux)remains active.  You can
connect up again with no loss of data after going home for example.

>From:    Richard Troth <[EMAIL PROTECTED]>
>Subject: Re: X11 vs VNC...scarry

>> Is taking 20% of an H30 processor just to keep it idling.

>I use VNC all the time on my PC based X desktop.
>I do not see the high idle time.   But there may be one or two
>processes started by KDE that are not completely happy with VNC.
>VNC does lack certain extensions that KDE wants.

>There may be something stuck in a kind of retry state.
>If you could kill that off,  things should be better.
>Also,  see what happens if you disconnect VNC.
>SSH into the Linux host and see if VNC idles down.

>> VNC is complete enough for about any type of "windowing".
>> But it is a resource hog.   ...

>I have to bow to the conventional wisdom
>that says that you don't want desktop work handled on zSeries.
>Still,  there are places where you  *want*  a VNC X arrangement
>on the mainframe.   Specifically,  any X apps that are  "chatty"
>would be better served by VNC on zSeries  (things where there is
>a lot of X traffic between X client and X server;  with VNC that
>would all be local to the mainframe),  just for one example.

>-- R;

Tom Russell,

"Stay calm.  Be brave.  Wait for the signs." -- Jasper Friendlybear

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