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Improving Application Efficiency Through Chip Multi-Threading

2.1.1.8 Multi-Threaded malloc

malloc and free are single-threaded operations and are among the bottlenecks for multi-threaded applications. A multi-threaded malloc scales with multi-threaded requests and can improve multi-threaded application performance. The Solaris OS has two types of multi-threaded malloc libraries, mt-malloc and umem.

2.1.1.8.1 Usage

a. Using mt-malloc:
LD_PRELOAD=libmtmalloc.so

b. Using libumem:
LD_PRELOAD=libumem.so

cc [ flag... ] file... -lumem [ library... ]

跟我的想法是一樣的，因為開矩陣還是需要很多時間的。