database monitor snapshot on partitioned db

[Jack]

I am setting up a partitioned db environment and am seeing some slow
performance when a query goes off the coordinator node. I have run a
global database manager snapshot and these numbers raise some
questions in my mind:
Node number = 0
Memory Pool Type = FCMBP Heap
Current size (bytes) = 17432576
High water mark (bytes) = 17432576
Maximum size allowed (bytes) = 1048576

Node number = 1
Memory Pool Type = FCMBP Heap
Current size (bytes) = 17432576
High water mark (bytes) = 17432576
Maximum size allowed (bytes) = 1048576

Node number = 2
Memory Pool Type = FCMBP Heap
Current size (bytes) = 17432576
High water mark (bytes) = 17432576
Maximum size allowed (bytes) = 1048576
It seems od that Maximum size allowed is smaller than Current size. I
have the FCM_BUFFERS at the default of 4096 and this is pretty close
to Current Size (4096 4k pages). I do know and can't seem to find
where this Maximum size allowed is coming from.

Is this a reason for concern?

thanks

Jack