Redmine

I am trying to optimize my installation on a shared Dreamhost server (and quit getting my processes killed) and I saw today that I have two ruby processes running after redmine starts up. Redmine is the only application and the only domain I have for this user, so I thought it was curious. Is this normal?

31021 wilsonwc 20 0 235m 111m 4752 S 0 0.7 0:07.48 ruby1.8
31037 wilsonwc 20 0 241m 115m 2396 S 0 0.7 0:01.35 ruby1.8