In some email I received from matthew green, sie wrote:
> 
>    	We default to SHMMAXPGS=1024, which seems rather small given this
>    	is the maximum limit and changes to it shouldn't affect the amount
>    	of memory in use unless an application takes advantage of a higher
>    	limit.
>    
>    	Ogle (to give an example) likes a SHMMAXPGS of 16384.
>    
>    	Would anyone object to increasing the default to 16384 for all
>    	platforms?
> 
> 
> perhaps, on a per-port basis, it could become a dynamic based on
> the amount of ram available?

why can't this be changable with sysctl ?