Kernel parameters problem in Linux

please tell me the list of kernel parameters in RHEL 5.7

Because we've a requirement in one project.
Also tell me the importance of eah kernel parameter if possible.

==Thanks in Advance==:):smiley:

You can list them sysctl -a . Read up on the kernel documentation about them. Importance is depending on what is important for you or the application you are going to run.