View source for Content.switch.threshold

 {{preference|pref=content.switch.threshold}}

==Background==
The user can interact with a loading page when [[content.interrupt.parsing]] is set to true. When a page is loading, the application has two modes: a high frequency interrupt mode and a low frequency interrupt mode. The high frequency interrupt mode interrupts the parser more frequently to allow for greater UI responsiveness during page load. The low frequency interrupt mode interrupts the parser less frequently to allow for quicker page load. The application enters high frequency interrupt mode when the user moves the mouse or types on the keyboard and switches back to low frequency mode when the user has had no activity for a certain amount of time. This preference controls that amount of time.

==Possible values and their effects==
The number of microseconds (1 second = 1,000,000 microseconds) of inactivity that puts the application into low frequency interrupt mode. (Default: 750,000)

==Caveats==
* This preference does not exist by default.
* [[content.notify.ontimer]] and [[content.interrupt.parsing]] must be set to true for this preference to take effect.

==Recommended settings==
Raising the value will make the application more responsive at the expense of page load time.

==First checked in==
[http://bonsai.mozilla.org/cvsview2.cgi?diff_mode=context&whitespace_mode=show&file=nsHTMLContentSink.cpp&branch=&root=/cvsroot&subdir=mozilla/content/html/document/src&command=DIFF_FRAMESET&rev1=3.464&rev2=3.465 2001-06-29 by Kevin McCluskey]

==Has an effect in==
* Netscape (all versions since 6.1)
* Mozilla Suite (all versions since 0.9.2.1)
* Phoenix (all versions)
* Firebird (all versions)
* Firefox (all versions)
* Minimo (all versions)
* SeaMonkey (all versions)

==Related bugs==
* [https://bugzilla.mozilla.org/show_bug.cgi?id=76722 Bug 76722 - Gecko blocks the main thread for > 1 sec processing events]

==Related preferences==
* [[content.interrupt.parsing]]
* [[content.notify.ontimer]]

[[Category:Preferences]]
[[Category:Tweaking preferences]]
[[Category:Preferences (Thunderbird)]]