[Bug 1552764] Re: Eclipse and SWT are very slow/hang on a fresh 16.04 install (gtk3/swt issue)

[giamma]

As an alternative to exporting the variable, it is possible to add the
following line to the eclipse.ini file:

--launcher.GTK_version 2

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https://bugs.launchpad.net/bugs/1552764

Title:
  Eclipse and SWT are very slow/hang on a fresh 16.04 install (gtk3/swt
  issue)

Status in java-common:
  New
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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