If I remember correctly, the main difference was with multi-threaded projects. Both libraries try to de-contention memory acquire by having threads pick the memory from different caches, but they have different strategies: jemalloc (used by Facebook) maintains a cache per thread tcmalloc (from Google) maintains a pool of caches, and threads develop a “natural” affinity … Read more
The following analysis applies only to glibc (based on the ptmalloc2 algorithm). There are certain options that seem helpful to return the freed memory back to the system: mallopt() (defined in malloc.h) does provide an option to set the trim threshold value using one of the parameter option M_TRIM_THRESHOLD, this indicates the minimum amount of … Read more
It depends upon requirement of your program. If your program has more dynamic memory allocations, then you need to choose a memory allocator, from available allocators, which would generate most optimal performance out of your program. For good memory management you need to meet the following requirements at minimum: Check if your system has enough … Read more