Dabacon Buffer

The Dabacon buffer is used for temporary storage of data in local memory and can therefore have a significant effect on performance. Increasing its size is likely to reduce the amount of network I/O, so in generally a larger buffer will improve performance. However if it is larger than the available memory, paging will increase, thus offsetting some of the advantages.

Previous versions of AVEVA Hull and Outfitting 12 have limited the buffer to between 32,000 and 51,200,000 (integers) with a default of (in general) only 12,800,000. This corresponds to a default of 50 and a maximum of 200 Mbytes; with modern PCs, most customers found it best to use the maximum value, set by use of the BUFFER command in Admin.

These values have been increased at Hull & Outfitting 12.1; it may now be set to between 20 Mbytes and 1 Gbyte.