Every time I start Eclipse it tries to refresh an entire project, which translates to more than 10 minutes of wait time, not to mention the ridiculous amount of memory it wo
For individual directories you can do it by adding Resource filters.
See this answer: https://stackoverflow.com/a/6321688/1194584
I'm sorry but I don't know anything about such a setting. As one already mentioned you could close the project within Eclipse (once it is open). This prevents the repetitive refreshing on that project. Otherwise I can just give you the suggestion to have 1 workspace per project and not include multiple different projects into the same workspace (unless they are related to each other). This is a much better practice and what I'm doing every day when working with Eclipse. And I didn't experience any problems so far of the type you mentioned.
You know what. Just close unused projects and that's was all for me.!
If your problem is the refresh on startup, try: Preferences -> General -> Startup and Shutdown -> Refresh workspace on startup.
I ran in to this same problem. When an eclipse project refreshes it seems to want to touch every file regardless of settings. The code base I'm working on has ~70K files, and took nearly 2 minutes to refresh. I eventually redefined the eclipse project to be a much smaller subset of that (~10K files) that has a ~ 1 second refresh. Not ideal, but the long refresh times are intolerable.
FYI the "Derived" check box and "Exclude from build..." options DON'T prevent a folder from being refreshed.
Note, the computer I'm using is 4-5 years old (Pentium IV processor, 7200 rpm hard drive). I bet one of these newer fast solid state hard drives would dramatically improve refresh times!
Edit the file .project inside the folder .metadata.plugins\org.eclipse.jdt.core.org.eclipse.jdt.core.external.folders of your workspace folder.
Then remove any content between the linkedResources tags.
That worked for me (eclipse-jee-helios-SR2-win32)