[binny1070]

There are some more details in our documentation under “Paging Pool” and “Paging Pool: Windows CE 5.0 vs. Windows Embedded CE 6.0.”
Overall, enabling the paging pool means that there is always some RAM reserved for code paging and we will be less likely to reach low-memory conditions. In general it's better to turn on the paging pool because it gives you more predictable performance, rather than occasional long delays you’d hit when cleaning up memory when you run out. But it does need to be sized based on the applications in use, which leads to my next point...
Choosing a Pool Size
In Windows CE (embedded) 5.0, the pool is turned off by default. In Windows Mobile, the pool is turned on and set to a default size chosen by Microsoft. I believe it varies between versions, but is somewhere in the neighborhood of 4-6 MB. In CE6, the loader pool has a target size of 3MB and the file pool has a target size of 1MB. Only the OEM of a device can set the pool size; applications cannot change it.