We are currently testing a new PVFS2 setup at our facility. The servers are running on RHEL 6 using XFS as the underlying filesystem. We are using four PVFS servers. Performance is beating NFS, which is what we wanted and expected.
While running some simple I/O tests today I discovered that writes are about 30% faster than reads. I expected reads to be faster. Further, when I tried the same I/O tests to the local disk of the client, and to an NFS server running on the same server hardware, I found that reads were indeed faster than writes by 3:1. Is it expected that reads would be slower on PVFS? Is there something I need to tune? Thanks in advance! -Roger Moye ----------------------------------------------------------- Roger V. Moye Systems Analyst III XSEDE Campus Champion University of Texas - MD Anderson Cancer Center Division of Quantitative Sciences Pickens Academic Tower - FCT4.6109 Houston, Texas (713) 792-2134 -----------------------------------------------------------
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