Do you have a few mintues to spare? I suggest you use them to download and try out the new System Process Visualizer tool from HP Operations Center. I promise it will be the best use of your time today! System Process visualizer (SysPV, in short) is a real-time visualization tool which offers a quick way for you to identify the worst offenders on your system - your biggest CPU and memory consumers in a single view. If you are familiar with the UNIX top command, this tool offers another view mimicking top. The difference is that this is via your browser a so you can monitor networked systems too - not just your PC.
It is a free download - get it, unzip/untargz it and run it - just follow the steps in the readme.
NOTE: There are other free tools also listed in the same page like vPV Free, SiteScope Free, Health Playback for Virtual Systems (for VMware vCenter) and Big Data Performance Visualization (for hadoop and Vertica setups) - feel free to try these out too.