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This greatly reduces the fragmentation of databases where records tend to grow slowly by a small amount each time. The case where this is most seen is the ldb index records. Adding this overallocation reduced the size of the resulting database by more than 20x when running a test that adds 10k users.
compression - Various compression algorithms (MSZIP, lzxpress) nss_wrapper - Wrapper for the user and group NSS API allowing the use of other data sources. popt - Command-line option parsing library replace - Provides replacements for standard (POSIX, C99) functions not provided by the host platform. socket_wrapper - Wrapper library allowing TCP/IP traffic to be redirected over Unix domain sockets. talloc - Hierarchical pool based memory allocator tdb - Simple but fast key/value database library, supporting multiple writers torture - Simple unit testing helper library