Fast, Multicore-Scalable, Low-Fragmentation Memory Allocation through Large Virtual Memory and Global Data Structures

作者：Aigner Martin^*; Kirsch Christoph M; Lippautz Michael; Sokolova Ana

来源：ACM Sigplan Notices, 2015, 50(10): 451-469.

DOI：10.1145/2814270.2814294

• Memory allocator
• virtual memory
• concurrent data structures
• multicore scalability

We demonstrate that general-purpose memory allocation involving many threads on many cores can be done with high performance, multicore scalability, and low memory consumption. For this purpose, we have designed and implemented scalloc, a concurrent allocator that generally performs and scales in our experiments better than other allocators while using less memory, and is still competitive otherwise. The main ideas behind the design of scalloc are: uniform treatment of small and big objects through so-called virtual spans, efficiently and effectively reclaiming free memory through fast and scalable global data structures, and constant-time (modulo synchronization) allocation and deallocation operations that trade off memory reuse and spatial locality without being subject to false sharing.

• 出版日期2015-10