Are there any ways of speeding up rake?

For me, no matter what rake task has be开发者_如何学Pythonen executed, it's at least 20 seconds. The time is too long.

My OS: windows xp, rails: 2.3.8, ruby: 1.8.7

UPDATE

Are there any ways of speeding up rake? Someone said upgrade to ruby 1.9, but I don't know does it work well with rails 2.3.8? (I see in the rails' website, they recommend ruby 1.8.7)

http://en.wikibooks.org/wiki/Ruby_Programming/Installing_Ruby#Windows_is_slow