http://cvs2svn.tigris.org/

[root@development ~]# cvs2svn --encoding=gb2312 --fallback-encoding=utf_8 --existing-svnrepos --svnrepos /home/svnroot /home/cvsroot
[root@development ~]# cvs2svn --encoding=gb2312 --fallback-encoding=utf_8 --svnrepos /home/svnroot /home/cvsroot