HP Remote Graphics Software (RGS) Manual de usuario descargar pdf (Pagina 235)

●

Select the Desktop tab and select Customize Desktop.

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On the Web tab, check Lock desktop items.

2. Sender process priority—Occasionally, an activity such as rotating a model in a 3D design

program may appear slow and erratic, and image update may appear inconsistent. If the Sender

is running on Windows, OS scheduling may be an issue. This can often be resolved by increasing

the process priority of the Sender. See the

Setting the Windows Sender process priority

on page 60 for further details.

3. Java Applications—Some versions of the Java Runtime Environment use DirectX. To see screen

updates on Windows XP Professional with these versions of Java, Automatic 3D Updates must be

enabled (see

Using the rgadmin tool on page 76). Rendering through DirectX will often cause the

entire DirectX window to be registered as a screen modification. This can result in higher

bandwidth and slightly higher CPU utilization by the Remote Graphics Sender. In some cases,

performance may be improved by using GDI rather than DirectX with Java.

●

To use GDI with Java, the "-Dsun.java2d.noddraw=true" option needs to be supplied to the

java or javaw executable. For example:

java -Dsun.java2d.noddraw=true SomeApp

●

This can be done by passing this option on the command line or adding this option to the

_JAVA_OPTIONS environment variable. For example:

set _JAVA_OPTIONS=-Dsun.java2d.noddraw=true

java SomeApp

11.3 Troubleshooting graphics performance

11.3.1 Graphics adapter frame buffer read performance

The dominant factor impacting performance on the Sender is the frame buffer read performance of the

graphics adapter. Frame buffer read performance of at least ten frames per second is recommended for

optimum RGS performance.

RGS uses the Remote Computer graphics adapter to accelerate rendering of the image. After the image

on the Remote Computer is modified, the RGS Sender reads the rendered image from the frame buffer,

compresses it, and transmits it to the Receiver.

On Windows, use BltTest to test the frame buffer read performance of the Remote Computer. This tool is

available at:

http://www.stereopsis.com/blttest/

11.3.2 Remote USB webcam performance

In the situation where a local USB webcam is mounted remotely, webcam output can be unacceptable.

For instance, if a webcam is connected to the local Linux desktop and then an RGS connection is made

to a remote Microsoft Windows workstation with the intention of using a video conferencing

application on the Microsoft Windows system by mounting the USB webcam remotely, the quality of

the webcam picture can be very poor. Two factors impact this situation. One, the control software and

drivers for the webcam are developed expecting normal USB transfer rates and delays. When the

webcam output is actually traveling over an I.P. network, the application and drivers may not perform

correctly. Two, network traffic of the Microsoft Windows systems video conferencing application is

ENWW

Troubleshooting graphics performance

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