This following lines causes 5mb memory consumption. It appears large to me.
if ( ! class_exists( 'SimplePie' ) ) include_once( ABSPATH . WPINC . '/class-feed.php' ); new SimplePie();
I'm using php 5.2.4, WordPress 3.5.1.
With PHP 5.4.3, the memory usage with the above lines becomes 2.25mb.
I'd like to know a way to reduce it if there is a workaround.