Bonnie++ is based on the Bonnie hard drive benchmark by Tim Bray. The most notable features that have been added are support for >2G of storage and testing operations involving thousands of files in a directory. This program is used by ReiserFS developers, but can be useful for anyone who wants to know how fast their hard drive or file system is. It now includes ZCAV in the package. This program tests the performance of different zones on the hard drive. ZCAV has been released separately before but will now only be released as part of the Bonnie++ suite.
maildir-bulletin takes a message on standard input, i.e. it runs in the same fashion as a mailing list program, and puts the message in every user's Maildir. The message is created once and links are created from all user's Maildir's to the original. This saves greatly on disk space usage and time. Delivering a 1K message to 100,000 users should only take a few hundred K of disk space and take ten or twenty minutes. If you have an alias to expand to 100,000 users the same 1K message will take 100M of storage and take several hours.
Portslave is a RADIUS client that acts as a Getty replacement that is used to create dialup access servers. It uses the RADIUS protocol to authenticate from a remote RADIUS server which contains the actual user account information. It primarily is for PPP access, but also works with other protocols and services.
This suite currently consists of three programs, Postal, Rabid, and BHM. Postal (the mad postman) is a program that will deliver mail as fast as possible via the SMTP protocol to test mail server performance. Rabid (the mad Biff) will eat mail via the POP protocol as fast as possible and measure POP server performance. BHM is the Black Hole Mailer to discard SMTP mail. All messages sent via Postal have MD5 checksums appended, and Rabid will check the MD5 to ensure that the messages are not being corrupted.
memlockd locks a list of files into RAM so that if the system starts paging excessively (as the result of a DOS attack or buggy program), the sysadmin will still be able to login to recover it. It will lock regular files as well as programs in memory, and for programs, it can optionally lock all shared objects that they are linked against.