https://bugzilla.redhat.com/show_bug.cgi?id=1294697
--- Comment #17 from Mat Booth mat.booth@redhat.com --- (In reply to Dennis W. Tokarski from comment #16)
Roland, Severin,
Thanks for pushing out all these fixes. I confirm that eclipse cpu use is back to normal for me as well.
btw, when you did the new build, did you do away with gtk2 support?
I had been using "--launcher.GTK_version 2" on the command line per Damien Gombault in comment 2, which also worked. The bonus for me was that eclipse then started using my preferred theme (Crux) which is not available for gtk3. This no longer works. Oh well.
You can try setting --launcher.GTK_version in your /etc/eclipse.ini file, but GTK2 support is not really supportable these days. GTK3 is where all the development effort is.