FreeBSD 7.0 has started to employ jemalloc as its default memory allocator, which exhibits much better than either dlmalloc or phkmalloc for multithreaded programs running on multi-processor systems. Dlmalloc is the default memory allocator employed by glibc, which has been widely accepted by a vast number of Linux release. Prior to jemalloc, fomer FreeBSD used to integrate phkmalloc serving...