Windows - definitely.
Linux - not that I'm aware of.
1. Use "top", "iostat" and other tools to establish a "performance baseline".
2. Identify any possible "trouble shots". If you do, see if adding RAM would help (I hate to say it, but "more memory" *is* generally a panacea for *many* kinds of performance issues. Both Windows and Linux)
3. In a couple of months (and only after you're comfortable that your "baseline" is reliable), then try periodic reboots. At this point, you'll have the numbers to determine whether or not the reboots make a difference.
'Hope that helps .. PSM