Datapmem

Datapmem is a software project focused on providing persistent memory (PMEM) support within a Linux environment. PMEM technology offers a new tier of memory that is non-volatile like storage but performs like DRAM. Datapmem aims to bridge the gap between traditional RAM and SSDs by enabling applications to leverage the speed and persistence of PMEM directly.

The project typically involves a kernel module and user-space libraries. The kernel module handles the low-level aspects of interacting with PMEM devices, such as mapping them into memory and ensuring data integrity. User-space libraries provide an API that allows applications to access and manage data stored on PMEM. This API often mimics traditional memory access patterns, making it easier for developers to adapt existing applications or build new ones that take advantage of PMEM's capabilities.

Key features of Datapmem often include efficient data placement, improved reliability through journaling or other consistency mechanisms, and support for various PMEM hardware configurations. By enabling direct memory access to persistent storage, Datapmem can lead to significant performance gains for data-intensive workloads, such as databases, high-performance computing, and caching systems. The project's goal is to make PMEM a practical and accessible technology for a wider range of applications.