No because you'll end up with the same problem elsewhere (handling blocks). If I'm correct tcmalloc memory overhead is around 4%. More overhead can be acceptabl

No because you'll end up with the same problem elsewhere (handling blocks). If I'm correct tcmalloc memory overhead is around 4%. More overhead can be acceptable if the memory is less fragmented (less fragmentation, less cache misses, better compactness and better perfs).