A memory allocator optimized for high concurrency and low memory consumption on modern multi-core and multi-processor systems.
It includes special support for NUMA systems (allocating memory from the nearest NUMA node, for example).

It is about 60% faster than the allocator included with Microsoft Visual C++ and uses less than half the memory for small objects
(< 256 bytes), leading to better cache utilization; this also makes it ideal for applications that allocate a huge number of small objects.
It is in many tests about 10% faster than the allocator included with Intel Thread Building Blocks.

It is implemented in C++ with a small amount of x86 Assembly and was recently converted to C++11.
Access to low-level synchronization and bit-manipulation instructions is done through compiler intrinsics.

The following documents present some of the implementation details:
Download interrnal data structures details (PDF)
Download bin location size details (PDF)