we can either:
a) change the calcualtion of free_ram_mb in host state or b) store used_ram_mb and total_ram_mb and compute the free_ram in the filter
I think I prefer b)
we can either:
a) change the calcualtion of free_ram_mb in host state
or
b) store used_ram_mb and total_ram_mb and compute the free_ram in the filter
I think I prefer b)