bgpuma parses an MRT file that is 11M in size in 15 seconds. It can also parse an entire day of files from Routeviews in 19 minutes. Running bgpuma requires a file containing a list of CIDR blocks, called the cidrfile and a file listing the MRT files you want bgpuma to search. bgpuma also understands the directory structures created by Routeviews and RIPE. If you have access to a file system containing this data, you can access the files by date.