performance results

NFS/RDMA performance results

Results from preliminary performance measurements of NFS/RDMA on IB hardware:
 -  Writes :   1GB/s
 -  Reads: 1.3GB/s

on Double data-rate IB (DDR) and with memory based filesystem (tmpfs) 

Configuration details:
 - Sun X2200M2 servers (AMD Opt. 2.6 GHz x2)              
 - 8 GB memory
 - Mellanox ConnectX HCAs (hermon)                               
 - Voltaire DDR switch
 - Solaris onnv b101                                                               
 - iozone v. 3.311 (customized)
 - tmpfs

Graphs of Throughput (in Kbytes/sec) vs. record size (1k - 1M)                   
 The left side of the image shows the perf results with Direct I/O turned on
 and the write with direct io turned off.