A few changes to deal with multi-user performance issues seen. this

brings us back roughly to 4.1 level performance, although this is still
far from optimal as we have seen in a number of cases. This change

	1) puts a lower bound on buffer cache queues to prevent starvation
	2) fixes the code which looks for a buffer to recycle
	3) reduces the number of vnodes back to 4.1 levels to avoid complex
	   performance issues better addressed after 4.2

ok art@ deraadt@, tested by many

0 files changed, 0 insertions, 0 deletions