What is velox's memory management mechanism?

[jiangjiguang]

I am very confused on veloxs memory management mechanism,
If I have given 25G memory by node.memory_gb=25 in node.properties, velox how to use theses memory.
Do velox keep theses memory as static ? it means put the 25G memory in a pool, and the program has to get memory from the pool ?

[whutjs]

I am not familiar with the detail implementation of memory management in Velox, but I think many memory management mechanisms are basically the same. You can refer to jemalloc for how memory management mechanism works.

[kgpai]

cc : @xiaoxmeng