Feedzirra is a feed library that is designed to get and update many feeds as quickly as possible. This includes using libcurl-multi through the taf2-curb gem for faster http gets, and libxml through nokogiri and sax-machine for faster parsing.
sudo apt-get install libcurl3 libxml2 libxml2-dev libxslt1-devsudo gem install pauldix-feedzirra
Josh Software 