Comment on How to delete million of files on busy Linux servers (Work out Argument list too long) by frog.
you might want to try moving all the non-related files outside the directory, and give it one shot: rm -rf DIR
frog Also Commented
How to delete million of files on busy Linux servers (Work out Argument list too long)
a even better way is: write a tool in c to remove the files, you can hard-encode the direcory path in the code, and sleep periodically, to avoid stressing the server.