AMM db_buffer_cache advisory question

Hi,

We have an 11.2.0.4 SE environment running AMM.  After running many statspack reports it seems to suggest increasing the buffer pool will approximate reduce the physical reads considerably:

Buffer Pool Advisory  DB/Inst: ABERLV1/aberlv1  End Snap: 582

-> Only rows with estimated physical reads >0 are displayed

-> ordered by Pool, Block Size, Buffers For Estimate

                                   Est

                                  Phys      Estimated                   Est

    Size for  Size      Buffers   Read     Phys Reads     Est Phys % dbtime

P    Est (M) Factr  (thousands)  Factr    (thousands)    Read Time  for Rds

--- -------- ----- ------------ ------ -------------- ------------ --------

D         48    .1            6    2.4      1,793,308    2,262,570     55.3

D         96    .2           12    2.2      1,661,732    2,081,407     50.9

D        144    .3           18    2.0      1,536,097    1,908,423     46.7

D        192    .4           24    1.9      1,416,598    1,743,889     42.6

D        240    .5           29    1.7      1,302,371    1,586,613     38.8

D        288    .6           35    1.6      1,193,048    1,436,090     35.1

D        336    .7           41    1.4      1,088,888    1,292,675     31.6

D        384    .8           47    1.3        990,411    1,157,085     28.3

D        432    .8           53    1.2        897,895    1,029,702     25.2

D        480    .9           59    1.1        811,027      910,097     22.3

D        512   1.0           63    1.0        755,863      834,142     20.4

D        528   1.0           65    1.0        729,030      797,197     19.5

D        576   1.1           71    0.9        651,115      689,918     16.9

D        624   1.2           76    0.8        576,897      587,730     14.4