SNAX/XF LU Network Services Manual

SNAXUTL ALLOCATE Command
The SNAX/XF Utility
097841 Tandem Computers Incorporated A–21
Calculating SET Table Extent Sizes
The formula for calculating extent sizes for SET tables is as follows:
a = $ROUNDUP{ (76 + 64x)/2048 bytes}
where
a
is the SET table extent size in bytes
$ROUNDUP
is a function that rounds its argument up to the next highest integer; for
example, $ROUNDUP(3.2) = 4
x
is the number of SET table records that contain ESS or BIND table names.
Calculating ESS Table Extent Sizes
To compute the extent size for ESS tables, two subcalculations are necessary. The
results of the subcalculations are then combined to produce the final extent value.
The formula for the first subcalculation is as follows:
a1 = 154x + yz
where
a1
is the number of bytes required for ESS commands
x
is the total number of commands
y
is the number of commands that contain extended data segment operands
(such as, REPDATA, CONCDATA, and USERDATA)
z
is the estimated average length in bytes of all extended segment operands