[racket] Periodic calls to collect-garbage?

> This sounds like a bug. Explicit calls to `collect-garbage' shouldn't
> be needed for the garage collector to do its job.
>
> Does anyone know an easy way for me to make the problem happen, so I
> can see what is going on?

I dont know if this is related but the virtual machine runs out of
memory every time I run raco setup when compiling Racket (32 bit) from
scratch on my Windows 7 (64 bit) machine.