How do I increase the performance of my Computer??? XDMCP SErver Problem !!! X manager problem !!!

I have a PII machine having windows and RHL8.0. But the problem is that the machine is performing quite well in windows but in linux it works like as slow as possible. In fact sometimes X hangs up and takes almost an hour to again be able to get the user interface back. I suppose it is due to too many processes which are started at the startup. Now how do I stop the unwanted services and how do I monitor the performance of my PC

Secondly I would like to set up my PC as an X Server. I have a windows machine (PIV ) there I have installed X manager. Now I want to get my machine which has RHL8.0 to be there on the PIV. How do I do it.

In fact another machine had been configured this way by my senior. How do I make my machine configure such a way that I get this machine on the X manager

I also am not able to configure my machine as an XDMCP server. I tried to do it by reading the XDMCP Server How to by Tom Chao but it didnt help me.

Lately I have one doubt  In our lab there is one PC on that Pc on the terminal when a particular username is given and enter is pressed then it doesnt ask for the password but it startsup the XDMCP Host menu. How has that PC been configured ? And If anyone knows about XDMCP is that so that It cannot be run on the GUI login?

I am rather confused with XDMCP. How do I solve it...

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i'll only address the issue of stopping unwanted services on your RedHat Linux configuration for now.

At a console, try the command "chckconfig --list". This gives you an overview of all stand-alone services configured to run on your Linux box. It also gives you a per-run level insight in whether that service is automatically startedn or not.

Besides that, the "chkconfig" utility also shows you what services are configured to be started through the "xinetd" service (services like Telnet and Swat are often started this way).

In case you do not know what the run-levels mean: the most important when it comes to service configuration are run-level 3 (which is "text-mode network enabled") and run-level 5 (which is "X-mode network enabled").

If you want to stop for example the "kudzu" service from being started in whatever run-level your system is in, you could give the command "chkconfig kudzu off".

If you want to disable the "kudzu" service only in run-level 3, you should give the command "chkconfig --level 3 off"

This way, you can configure exactly which services are started and which not.

Please be careful when disabling services - disable only services from which you no for sure you do not need them.

To find out whether or not a service is critical for your ssytem, you CAN use the "service" command. For example, if your system is running and you have for example the "mysqld" service running, you can stop this service by issueing the command "service mysqld stop". It is however adviseable to identify unneeded services through other methods!

For general information about your running system, you can start the "top" command. It shows you information about the number of processes, the memory used, the percentage of processor load etc. etc.

I hope this gets you more insight in RedHat Linux. I'll try to answer your XDMCP related question later, but i am VERY busy at the moment.


Martijn Tigchelaar, RHCE.

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