[Bug 1552764] Re: Eclipse is very slow/hangs on a fresh 16.04 install (gtk/swt issue?)

[Michael]

The problem is indeed gtk(3). gtk2 works fine (can be forced the the
environment variable export SWT_GTK3=0 -
http://www.eclipse.org/swt/faq.php#gtkstartup) Additionally, this way I
have no graphic errors any longer.

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Title:
  Eclipse is very slow/hangs on a fresh 16.04 install (gtk/swt issue?)

Status in java-common package in Ubuntu:
  Confirmed
Status in openjdk package in Ubuntu:
  Confirmed
Status in swt-gtk package in Ubuntu:
  Confirmed

Bug description:
  I installed a fresh Ubuntu 16.04 64 bit from nightly build
  (2016-03-02).

  Eclipse Mars.2 (4.5.2) is often very slow / hangs, especially on start
  of actions (searching projects, importing them, search for updates,
  install plugins etc.

  Things I tried:
    * openjdk8 /oracle java 8
    * OS / CS nvidia driver
    * unity / gnome (metacity and compizz)
    * fresh workspace

  jvisualvm  shows that much cpu time is consumed by
  rg.eclipse.swt.internal.gtk.OS._g_main_context_iteration[native] ...

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