The hash-test command 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.
hash-test file.reference {item.list} {selection.criteria} {(options}
test modulo: modulo
| options | s | Displays the summary statistics only. |
hash-test testfile test modulo: 3 file= testfile modulo= 3 10:07:24 14 Feb 2003 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.