[Eclipse] Slow update process

When installing updates via the Eclipse update manager, it sometimes takes forever to complete the update process, even for very small updates.

One cause may be Eclipse trying to contact all known sites when fetching updates. To avoid that, try adding:

-Declipse.p2.mirrors=false

in your eclipse.ini file, after the -vmargs flag then restart Eclipse. Alternatively, you can uncheck the "Contact all update sites" flag every time you run an update from the update wizard.