On 31 Mar 1999 10:06:56 -0500 
 "Perry E. Metzger" <perry@piermont.com> wrote:

 > > Log Message:
 > > Set a hard limit (rather than an advisory high water mark for pages) of
 > > NMBCLUSTERS for the mbuf cluster pool.  On platforms which use direct-mapped
 > > segments for pool pages (MIPS and Alpha), this makes NMBCLUSTERS actually
 > > meaningful (such ports don't even allocate mb_map, as it is not used to
 > > map mbuf cluster pages).
 > 
 > It would be cool if you could also jack up NMBCLUSTERS with a sysctl, now
 > that it is (conceivably) possible.

No, it's not conceivably possible, at least on systems where mb_map is still
used.  Once the mb_map submap is allocated (early during startup), it's
allocated, and there's no resizing it.

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>