SNAX/XF LU Network Services Manual

SNAXUTL ALLOCATE Command
The SNAX/XF Utility
A–22 097841 Tandem Computers Incorporated
The formula for the second subcalculation is as follows:
a2 = (54 + b1)x + (108 + b2)y
where
a2
is the number of bytes required for ESS messages
b1
is the estimated average length of all ESS messages fewer than 1980 bytes long
b2
is the estimated average length of all ESS messages between 1981 bytes and
3720 bytes in length
x
is the number of ESS messages fewer than 1980 bytes long
y
is the number of ESS messages between 1981 bytes and 3720 bytes in length
The following formula is used to calculate the extent size, based on the results of the
subcalculations:
a = $ROUNDUP{ (132 + a1 + a2)/2048 }
where
a
is the extent size to be used in the ALLOCATE command
$ROUNDUP
is a function that rounds its argument up to the next highest integer (for
example, $ROUNDUP(3.2) = 4)
a1
is the value derived from the first subcalculation
a2
is the value derived from the second subcalculation