Testing changes made to shared memory

After making any changes, it is vitally important to verify that the following tests complete successfully.

To test changes made to shared memory

Run a backup.
Restore the data from the backup.
Restore data from a backup that was created before the changes to the SIZE_DATA_BUFFERS_xxxx and NUMBER_DATA_BUFFERS_xxxx files.
Before and after altering the size or number of data buffers, examine the buffer usage information in the bptm debug log file.
The values in the log should match your buffer settings. The relevant bptm log entries are similar to the following:
```
12:02:55 [28551] <2> io_init: using 65536 data buffer size
12:02:55 [28551] <2> io_init: CINDEX 0, sched bytes for 
monitoring = 200
12:02:55 [28551] <2> io_init: using 8 data buffers
```
or
```
15:26:01 [21544] <2> mpx_setup_restore_shm: using 12 data 
buffers, buffer size is 65536
```
When you change these settings, take into consideration the total system resources and the entire network. The Maximum Transmission Unit (MTU) for the local area network (LAN) may also have to be changed.