![]() ![]() This can result in SpectroSERVER and Archive Manager crashes, as well as performance problems in the TCPIP stack. When most of the non-paged pool memory has been allocated, the Windows kernel (srv.exe process) can't allocate more for itself or for application handles and drivers. When antivirus and host intrusion applications scan the system, they cache data in the NPP. Third party applications (often antivirus, backup and Host Intrusion Prevention (or HIPS) applications) can consume all available memory in the non-paged pool (NPP). What does this have to do with Spectrum? The SpectroSERVER and Archive Manager can be indirectly impacted when non-paged pool memory is exhausted. For more information on the Windows kernel address space, see the references below. ![]() Once non-paged memory has been allocated it cannot be freed. These are the paged pool, which can be paged out to disk if physical memory is low, and the much smaller non-paged pool (NPP), which guarantees that memory allocated will remain in physical memory. Windows operating systems use two finite memory pools for kernel components, based on the amount of physical memory on the machine and the architecture of the Windows version.
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