Sets the size (in bytes) of each block in the server's emergency memory pool. The server allocates the emergency pool on startup and frees pieces of it when memory is tight.
/as general set poolblocksize 16384
The default is 8Kb on all operating systems except Linux where the default is 128Kb. You may wish to lower this value if your server is tight on memory. You may wish to raise this value to allow your server to better handle memory exhaustion situations.
Note: Making the memory pool too small can destabilize the server.