About mirror driver

NTDEV
1

Hi all,
Does anybody know if Linux have function like mirror driver? If there is one, what is called? Thanks!

Joe
Best Regards.

2

joez wrote:

Hi all,
Does anybody know if Linux have function like mirror driver? If there
is one, what is called? Thanks!

That depends on what you mean. X was designed from the beginning to
operate over a network. There is an X application that you can use as a
“tee”, to route an X network session to multiple X servers, although
I’ve forgotten its name. There is a thing called XMX that acts as a
multiplexor for classroom environments.

Overall, you need to be more specific. VNC certainly works on X just fine.

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

3

Thanks, Tim

So it isn’t a driver in Linux, it just a application function like mirror
driver does in the windows. Is it right?
Because the X run over a network and doesn’t like a display driver in
windows.It doesn’t belong to driver-level. right?

Best Regards,
Joe
----- Original Message -----
From: “Tim Roberts”
To: “Windows System Software Devs Interest List”
Sent: Thursday, October 09, 2008 5:02 PM
Subject: Re: [ntdev] About mirror driver

> joez wrote:
>> Hi all,
>> Does anybody know if Linux have function like mirror driver? If there
>> is one, what is called? Thanks!
>
> That depends on what you mean. X was designed from the beginning to
> operate over a network. There is an X application that you can use as a
> “tee”, to route an X network session to multiple X servers, although
> I’ve forgotten its name. There is a thing called XMX that acts as a
> multiplexor for classroom environments.
>
> Overall, you need to be more specific. VNC certainly works on X just
> fine.
>
> –
> Tim Roberts, xxxxx@probo.com
> Providenza & Boekelheide, Inc.
>
>
> —
> NTDEV is sponsored by OSR
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4

joez wrote:

So it isn’t a driver in Linux, it just a application function like
mirror driver does in the windows. Is it right?
Because the X run over a network and doesn’t like a display driver in
windows.It doesn’t belong to driver-level. right?

Correct. The X Server (which is the GUI subsystem in most Linux
systems) is a normal user-mode application. It happens to run as root
so it can map memory and access I/O ports, but other than that it is
just a normal application.

Divers that support OpenGL often have a small kernel component to allow
them to do DMA.

Before we start getting complaints about performance, I would point out
that, when the server and the client are on the same machine, X is smart
enough to use an IPC mechanism that does not actually involve the
network stack.

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.