We're using LTSP 5 on Ubuntu 8.04 x86_64. Overall, it works very well for us.
However, we have two applications that are extremely slow on the thin clients,
but both work fine on the server.
One of the applications is an in-house database app developed in Dephi and
running with wine. The other app is more easily reproducible: Netbeans IDE -
versions 6.0, 6.1 and 6.5 Beta (for linux).
I spent most of last week looking into this problem without much success. I
did a lot of searches of the archives of this group, and discovered that it
appears to be a problem with the graphical libraries (libGL ?).
If I NX into the server from a client, they both work fine - about like they do
on the server itself. NX, I believe, uses its own graphical libraries, from
what I understand.
Unfortunately, we can't afford to buy NX, and FreeNX only gives us two
simultaneous connections - and we need more than that.
***** So, how does one go about solving these kind of problems that seem to be
a result of the graphical libraries? *****
I've thought about chrooting into /opt/ltsp/i386 and installing
libgl1-mesa-swx11 and updating the images. Below is a description of this
package. Does that sound like it might even remotely get around this problem?
In any case, I'd really appreciate it if someone could tell me how to address
this type of problem. I beat my head against the wall with this all last week.
I'm ready to ask for help...
I don't even know how to go about this. And I've been using Linux for a long
time. I hope somebody can point me to the right direction. I'd really
appreciate it.
---
A free implementation of the OpenGL API -- runtime
Mesa is a 3-D graphics library with an API which is very similar to
that of OpenGL. To the extent that Mesa utilizes the OpenGL command
syntax or state machine, it is being used with authorization from
Silicon Graphics, Inc. However, the author makes no claim that Mesa
is in any way a compatible replacement for OpenGL or associated with
Silicon Graphics, Inc.
This library provides a pure software rasteriser; it does not provide
a direct rendering-capable library, or one which uses GLX. For that,
please see libgl1-mesa-glx.
On Linux, this library is also known as libGL or libGL.so.1.
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