The Firefox Awesome Bar is indeed awesome. But, lately I see that it has become slow. On entering some characters it even freezes for a few seconds (freezing the entire browser).
Why does it slow down? Is there a way to speed it up?
(The OS is Windows XP.)
You could VACUUM the SQLite databases that Firefox uses to store it's history and other data. Vacuuming optimizes the database tables inside the files. That speeds up Firefox and saves you some disk space.
To vacuum the Firefox database files:
Find the Firefox profile data directory on your system. On Windows Vista, it could be somewhere like C:\Users\tom\AppData\Roaming\Mozilla\Firefox\Profiles\default.jqi\. The directory contains files with the .sqlite extension, so you can find it by searching for those.
Get the SQLite command line utility here.
Close all Firefox windows. Open a command line in the profile directory.
On Windows, type in the command for %i in (*.sqlite) do @echo VACUUM; | sqlite3 %i
On Linux or Mac, run for i in *.sqlite; do echo "VACUUM;" | sqlite3 $i ; done
Defragment your harddrive.
Google Chrome actually uses SQLite as well, except it doesn't give the files the .sqlite extension. You can still safely run the same command for all the files in the Chrome profile directory and SQLite will only VACUUM the files it recognizes.
It is easier to install the Vacuum Places addon which allows you to defragment the Places database with the click of a button.
You used to be able to run the command:
Components.classes["@mozilla.org/browser/nav-history-service;1"].getService(Components.interfaces.nsPIPlacesDatabase).DBConnection.executeSimpleSQL("VACUUM");
in the "Error Console" to vacuum the database, but I'm not sure it works in Firefox 3.6.
This is because you have a lot of pages history. Clearing history every once in a while helps with this.
Well the awesome bar queries your history, bookmarks and recent search terms (from the same bar) so perhaps you've got a lot of data in there. Try clearing out your history (from a month back onwards if you'd like to keep recent history) and emptying your search history - 3.5 has a useful tool for this (that can clear up to a set date). This should speed up your query times if there's less data.
The Places Maintenance extension has a UI that allows easy vacuuming (optimization) of Firefox database files, which should help speed up the Awesome Bar and other Firefox database access. It also has other Firefox database maintenance functions:
Allows to run Maintenance tasks on the database that drives Places, the bookmarks and history module behind Firefox.
If you have SQLite you can run this command:
echo 'DELETE FROM moz_historyvisits
WHERE visit_date < strftime("%s", "now", "-5 month") * 1000000; VACUUM;' |
sqlite3 places.sqlite
This works just fine for me:
cd ~/.mozilla/firefox/????????.default
echo "VACUUM;" | sqlite3 places.sqlite
The idea is VACUUMing, as suggested, only places.sqlite.
On Linux you could use tmpfs to mount part of the filesystem in memory. (Ironically, of course, one of SQLite's best features is its ability to store an entire database in memory in the first place.)
Wikipedia suggests an alternative to tmpfs for Windows, but it doesn't go into details and it feels somewhat hacky. YMMV.
