bug 604831 - fixing GC trigger factor setup. r=anygregor

dom/base/nsJSEnvironment.cpp

@@ -3935,7 +3935,7 @@ SetMemoryHighWaterMarkPrefChangedCallback(const char* aPrefName, void* aClosure)
 static int
 SetMemoryGCFrequencyPrefChangedCallback(const char* aPrefName, void* aClosure)
 {
-  PRInt32 triggerFactor = nsContentUtils::GetIntPref(aPrefName, 1600);
+  PRInt32 triggerFactor = nsContentUtils::GetIntPref(aPrefName, 300);
   JS_SetGCParameter(nsJSRuntime::sRuntime, JSGC_TRIGGER_FACTOR, triggerFactor);
   return 0;
 }

modules/libpref/src/init/all.js

@@ -597,7 +597,7 @@ pref("javascript.options.methodjit.chrome",  false);
 // please find Bug 417052 comment 17 and Bug 456721
 // Comment 32.
 pref("javascript.options.mem.high_water_mark", 32);
-pref("javascript.options.mem.gc_frequency",   1600);
+pref("javascript.options.mem.gc_frequency",   300);
 
 // advanced prefs
 pref("advanced.mailftp",                    false);