[..] > > I don't know why my writes are so slow compared to reads. Let me know > if you're able to get better write speeds with the newer version of > gluster and any of the configurations (if they apply) that I've > posted. It might compel me to upgrade. > From your documentation of nfsspeedtest, I see that the reads can happen either via dd or via perl's sysread. I'm not sure if one is better over the other. Secondly - Are you doing direct IO on the backend XFS ? If not, try it with direct IO so that you are not misled by the memory situation in the system at the time of your test. It will give a clearer picture of what your backend is capable of. Your test is such that you write a file and immediately read the same file back. It is possible that a good chunk of it is cached on the backend. After the write, do a flush of the filesystem caches by using: echo 3 > /proc/sys/vm/drop_caches. Sleep for a while. Then do the read. Or as suggested earlier, resort to direct IO while testing the backend FS. Pavan
