Eclipse Oxygen causes slowdown the whole system

Question

First of all I am running Eclipse Oxygen on a windows system with following configuration which I thing fairly enough.

System informtion: Intel core(TM) i7 processor, 8GB RAM, 250 SSD storage

Though initially the Eclipse worked fine, after doing all my configurations it causes to slow down my whole system. I feel like my processor is on fire! Eclipse is sluggish & take a while even to scroll down. Confirm, there is no any other heavy process is running on the system.

Have anybody experience this kind of problem before? Could this be caused by a plug-in or service that I have installed implicitly? If so, how may I diagnosis and turn off such malicious plug-in or demon?

Configuration that I have done after installing Eclipse

• Install few plug-ins such as "SVN Connector", "Oracle Weblogic Server Tools", "Java EE 7 Documentation", "Eclipse Quicksearch" etc.
• Changing to the "Dark Theme"
• General system configurations with relate to a web application.

Machine performance while the Eclipse is running

CPU utilization is very high while the memory utilization looks okay

Eclipse is the process that cause to it

Answer 1

I disabled "Oracle Weblogic Server Tools" plugins at Startup and Shutdown ( Window > Preferences: General > Startup and Shutdown) & now eclipse work fine.

Answer 2

In my experience, it is the various validators that get added by web developer plug-ins. Look under "Preferences > Validation" and disable any you do not need. I usually disable HTML and JavaScript because they are CPU intensive as their grammars are not well-formed.

Answer 3

For example:

Eclipse Quick Search is a fast and easy to use "search as you type" text search tool. Open with Cmd-Shift-L, type your search and see results immediately.

An index have to be created and updated to offer such service. If you have many files and often switch between branches you may consider to uninstall this plug-in.

See Window > Preferences: General > Startup and Shutdown for the list of plug-ins that are activated already on startup.