change queue pool requirement/recommendation/defaults: write pool 2/3+/3, prefetch pool 0/1+/1, warn about inefficiency if less than recommended blocks are used
change queue pool requirement/recommendation/defaults: write pool 2/3+/3, prefetch pool 0/1+/1, warn about inefficiency if less than recommended blocks are used

git-svn-id: 4e7379b20b57f8e3dde5a0b7363f233184647162@1738 4e380d45-d1fd-0310-85a7-d18ec86df0ad

sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp