Any tricks for speeding up cvsps?

Hi,

I'm trying to convert a huge cvs repository. I've left cvsps running for days. First attempt, stderr filled my disc with warnings about tags that couldn't be associated with any one commit, without producing anything from stdout. I'm now redirecting stderr to /dev/null, but it still just sits there producing nothing. Is git-cvsimport infeasible for large repositories, or are there tricks I might use?

P.