Advanced non-volatile, solid-state storage technologies such as phase change memory promise enormous gains in performance relative to both conventional disks and flash memory-based storage devices. However, existing abstractions for accessing non-volatile data (i.e., file systems and the associated system calls) cannot exploit the performance and flexibility these memories offer. We describe a new, transaction-based interface that allows programmers to implement fast, scalable, durable data structures that are robust in the face of unexpected system failures. The interface maps the non-volatile storage directly into the application's address space and allows volatile and non-volatile data structures to interact seamlessly in programs. Since the interface removes the operating system from the critical path of basic read and write operations, it can realize up to 2350X speedups relative to transactional storage systems that target the conventional file-based interface. We describe the system's internal operation, describe the support it requires from hardware, and quantify its performance.
The authors of these documents have submitted their reports to this technical report series for the purpose of non-commercial dissemination of scientific work. The reports are copyrighted by the authors, and their existence in electronic format does not imply that the authors have relinquished any rights. You may copy a report for scholarly, non-commercial purposes, such as research or instruction, provided that you agree to respect the author's copyright. For information concerning the use of this document for other than research or instructional purposes, contact the authors. Other information concerning this technical report series can be obtained from the Computer Science and Engineering Department at the University of California at San Diego, firstname.lastname@example.org.
[ Search ]