commit 979f170107821ca481870c01820d628e55d47913 Author: Georg Koppen gk@torproject.org Date: Fri Jun 17 08:29:48 2016 +0000

fixup! TB4: Tor Browser's Firefox preference overrides.

This works around the most problematic performance regressions brought up in bug 19276. --- browser/app/profile/000-tor-browser.js | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/browser/app/profile/000-tor-browser.js b/browser/app/profile/000-tor-browser.js index 7b2e773..e3665b4 100644 --- a/browser/app/profile/000-tor-browser.js +++ b/browser/app/profile/000-tor-browser.js @@ -240,6 +240,10 @@ pref("network.http.pipelining.max-optimistic-requests", 3); pref("security.ssl.disable_session_identifiers", true); pref("network.manage-offline-status", false);

+// Disable Xrender as it causes serious performance regressions on some machines +// and is disabled in Firefox >= 47 anyway. +pref("gfx.xrender.enabled",false); + // As a "defense in depth" measure, configure an empty push server URL (the // DOM Push features are disabled by default via other prefs). pref("dom.push.serverURL", "");