hash-test

hash-test


h Index Level hdr-supp
Syntax hash-test file.reference {itemlist} {sellist} {(options)}
test modulo:modulo <return>
Category Access
Type Verb
Description produces a "histogram", or graphic representation of item-id distribution within a given file, according to a "test" modulo provided.  The command is useful when performing file reallocation providing insight into how the item-ids hash into the file, as well as providing a suggested modulo.
Options *  see "options: Access".

s  Displays summary statistics only.
See Also file.reference Access verbs item istat
Example hash-test testfile<return>
test modulo: 3<return>

file= testfile     modulo= 3        10:07:24 03 Mar 1992
frames  bytes items
1    444    1 *>
1    772    2 *>>
1   1742    2 *>>
3

Hash-Test/Istat Statistics
total item count =     5        byte count =  2958
avg. bytes/item  = 591.6  avg. items/group =   1.6
std. deviation   =    .5  avg. bytes/group = 986.0
suggested modulo =     3

This file has three groups, a total of five items. Each ">" ("hash mark") indicates an item.
Warnings
Compatibility D3 7.0 AP R83
h Index Level hdr-supp