PRESS: a clustered server based on user-level communication

E.N. Carrera, R. Bianchini
2005 IEEE Transactions on Parallel and Distributed Systems  
In this paper, we propose and evaluate a cluster-based network server called PRESS. The server relies on localityconscious request distribution and a standard for user-level communication to achieve high performance and portability. We evaluate PRESS by first isolating the performance benefits of three key features of user-level communication: low processor overhead, remote memory accesses, and zero-copy transfers. Next, we compare PRESS to servers that involve less intercluster communication,
more » ... ut are not as easily portable. Our results for an 8-node server cluster and five WWW traces demonstrate that user-level communication can improve performance by as much as 52 percent compared to a kernel-level protocol. Low processor overhead, remote memory writes, and zero-copy all make nontrivial contributions toward this overall gain. Our results also show that portability in PRESS causes no throughput degradation when we exploit user-level communication extensively.
doi:10.1109/tpds.2005.60 fatcat:az4drvbjlvexrgyf5pdvrbxhee