The Windows registry (WR) is a NoSQL DBMS based on a semi-structured hierarchical data model. Unlike configuration files approach, WR:

• can manage millions of keys and values
• is thread-safe
• is an in-memory database
• supports some data types
• supports a secure access to keys and values
• has GUI (regedit) and command …

The small test program shows how memory and file I/O operations can be accelerated using multiple threads.

Scenario

The program uses

• N threads (1 means a single thread)
• X bytes of memory to allocate a huge block (255 MB by default)
• M files to dump some huge memory block …