Check out the new USENIX Web site.
USENIX, The Advanced Computing Systems Association

5th USENIX Conference on File and Storage Technologies Abstract

Pp. 199214 of the Proceedings

Nache: Design and Implementation of a Caching Proxy for NFSv4

Ajay Gulati, Rice University; Manoj Naik and Renu Tewari, IBM Almaden Research Center


In this paper, we present Nache, a caching proxy for NFSv4 that enables a consistent cache of a remote NFS server to be maintained and shared across multiple local NFS clients. Nache leverages the features of NFSv4 to improve the performance of file accesses in a widearea distributed setting by bringing the data closer to the client. Conceptually, Nache acts as an NFS server to the local clients and as an NFS client to the remote server. To provide cache consistency, Nache exploits the read and write delegations support in NFSv4. Nache enables the cache and the delegation to be shared among a set of local clients, thereby reducing conflicts and improving performance. We have implemented Nache in the Linux 2.6 kernel. Using Filebench workloads and other benchmarks, we present the evaluation of Nache and show that it can reduce the NFS operations at the server by 10-50%.
  • View the full text of this paper in HTML and PDF. Listen to the presentation in MP3 format.
    Click here if you have forgotten your password Until February 2008, you will need your USENIX membership identification in order to access the full papers. The Proceedings are published as a collective work, 2007 by the USENIX Association. All Rights Reserved. Rights to individual papers remain with the author or the author's employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes. USENIX acknowledges all trademarks within this paper.
To become a USENIX member, please see our Membership Information.

Last changed: 4 May 2007 ac