Re:Memory Management in Python
by rurban on Monday August 05, 2019 @02:27AM
(#20611732)
Can confirm for perl. We are doing the very same. It's a huge win.
Differences:
We never free empty pools.
Our arenas are just single linked lists, no need for the prev.
Notes:
For a statically compiled perl the biggest win is to avoid arena allocation (mmap) at all. Data and code is made static. That's around 10-20% of the runtime (for shortrunning programs).
Also we rarely free at the end. The OS does it much better than free(). Only the mandatory DESTROY calls and FileIO finalizers are executed.
Differences:
We never free empty pools. Our arenas are just single linked lists, no need for the prev.
Notes:
For a statically compiled perl the biggest win is to avoid arena allocation (mmap) at all. Data and code is made static. That's around 10-20% of the runtime (for shortrunning programs). Also we rarely free at the end. The OS does it much better than free(). Only the mandatory DESTROY calls and FileIO finalizers are executed.