Below are some of hard learned tricks that may help you with eclipse slowness.
For several years of programming, I did not know how to speed up eclipse.
It uses a robust parser thus being able to handle correctly not well formed documents.
From the dialog box for creating new Eclipse projects, you can choose the type "XML Project".
-startup plugins/org.eclipse.equinox.launcher_1.3.200.v20160318-1642--launcher.library plugins/org.eclipse.equinox.linux.x86_64_1.1.400.v20160518-1444 -product org.product --launcher.default Action open File -showsplash org.eclipse.platform --launcher.default Action open File --launcher.append Vmargs -vmargs -Dosgi.required Java Version=1.8 -XX: Use G1GC -XX: Use String Deduplication -Dosgi.required Java Version=1.8 -Xms256m -Xmx1024m There's no one-size-fits-all solution for this issue as it depends on how much memory you need versus how much memory you have.
The installation fails with a similar error message as in FAQ #2 (Unable to read repository ...).
However, the detail message points to a certificate error like "Sun Cert Path Builder Exception: unable to find a valid certification path".
The Oxygen plugin installs a series of Eclipse wizards that helps you to easily create new documents.
Using these wizards, Oxygen will fill in details such as the system ID or schema location of a new XML document, the minimal markup of a Doc Book article, or the namespace declarations of a Relax NG schema.