my max db_file_multiblock_read_count is 128.. why?

[lroot/dragon@: ]echo 'vol_maxio /D' | adb -k
physmem 1390ee
vol_maxio:
vol_maxio: 512
(256K)

[lroot/dragon@: ]echo 'maxphys /D' | adb -k
physmem 1390ee
maxphys:
maxphys: 131072
(128K)

Oracle Block size=4K

So I'd expect my max multi_block_read to be 64 (or even 32, not 100% sure if maxphys has anything to do w/ vxfs)

however
multiblock_read_test.sql (from Steve Adams/ixora.com.au) shows that it's 128

Are oracle reported scattered reads not actual physical reads?

Any extra insight is appreciated.
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We use Oracle 8.1.7.3 on Solaris 2.7 boxes remove NSPAM to email Received on Mon Aug 26 2002 - 13:08:07 CDT