Determining internal Symphony table size
The mailman service (2002) can optionally take a parameter
that determines the initial size of the internal Symphony table. If
you do not supply this parameter, mailman calculates the initial table
size based on the number of records in the file.
Note: Mailman expands
the table if it needs to, even if this parameter is not supplied.
In normal circumstances, leave mailman to take the default value
in the NetConf file
as supplied (32000). However, if you are experiencing problems with
memory, you can allocate a table that is initially smaller. To do
this you change the parameter to the service 2002 in the NetConf file.
The syntax for the entry is:
where, <number> is used
to calculate the initial Symphony table size based on the number of
records in the Symphony file.
|
If r is the number of records
in the Symphony file when batchman starts, Table 1 shows how the size of the
internal Symphony table is calculated, depending on the value of <number>:
| Value of <number> | Table size |
|---|---|
| 0 | (4/3r) + 512 |
| n | if n > r, n |
| -1 | 65535 |
| -n | if +n => r, n |
If during the production period you add more jobs, the maximum internal Symphony table size is increased dynamically, up to the maximum number of records allowed in the Symphony file, which is 2,000,000,000.