Performance system values: Base memory pool minimum size
The Base memory pool minimum size system value is also known as QBASPOOL. You can use this system value to specify the minimum size for the base memory pool.
| Quick reference | |
|---|---|
| Location | From IBM® Navigator for i, select . Right-click on Performance and click Properties, then select the Memory Pools tab. |
| Special authority | None. |
| Default value | 5% of the main storage with a minimum value of 2000 KB. |
| Changes take effect | Immediately. |
| Lockable | No. |
What can I do with this system value?
You can specify the minimum size of the base memory pool in megabytes (MB). A memory pool is a logical division of memory (storage) that is reserved for processing a job or group of jobs. The base memory pool contains all memory not allocated by other pools. This pool is specified in the subsystem description as *BASE.
In some circumstances, a machine function may be using storage allocated to the base pool. If this is so, and if the change to the system value would reduce the allocation to less than 256 KB (kilobytes) plus the amount needed by the machine, the system value is changed immediately. However, the actual base pool size will not be reduced below 256 KB plus the amount needed by the machine until the storage in use is released by the machine.