Manual talk:$wgRCMaxAge

Is this setting realy maintained?

In my little (low traffic) wikis, Iwould loe to keep the change history for a year or forever. However, when I change the setting to e.g.

$wgRCMaxAge = 31536000;

or

$wgRCMaxAge = 9536000;

I do not see any changes in the "Recent Changes" page.