memory allocation
malloc was written by Doug Mcllroy Hoard Lockless Allocator Memory Pool System Boehm-Demers-Weiser TLSF http://www.gii.upv.es/tlsf/ nedmalloc http://www.nedprod.com/programs/portable/nedmalloc/ jemalloc http://www.canonware.com/jemalloc/ dlmalloc, ptmalloc TCMalloc http://goog-perftools.sourceforge.net/doc/tcmalloc.html mimalloc https://github.com/microsoft/mimalloc
Memory Pool System Boehm-Demers-Weiser
CPython + glibc malloc may leak memory as malloc uses sbrk for small blocks and CPython does not perform compaction. Switch to jemalloc.