Hi all, I know my hardware is not high-performance. But during my gluster-tests there are some remarkable results... My node are: node1: Home-brewn home-server based on an atom. node2: Old heater named Pentium4 node3: Turion64-based laptop The first have their disks via sata and are connected via Gigabit-Ethernet, the laptop has only pata and 100MBit. I did run dbench with the same parameters but varying number of clients on the raw disks of the bricks and also on the fuse-mounted volume in its different stages of 1) two nodes, two bricks, 2) two nodes, four bricks and 3) three nodes, 6bricks. The results of Throughput and Maximum Latency are graphed in the attached pdf[*]. The third node was only used with the three-node-setup. I find it remarkable that the local disk is faster by a factor of two in throughput and faster by a factor of ten(!) in latency. The first I could explain as the write-access has to go through the network and to the disk and might thus get a performance-penalty on this old, single-core system. But the high latency is very strange... I didn't do any special optimization, mounted all the brick-partitions as ext4 with defaults,user_xattr,noatime and there was nothing else going on on the cpus and network apart from normal desktop and background-music. Did I do something wrong, did I miss some optimization or is this to be a expected performance? Thanks for your input, Arnold [*] I hope that makes it through to the list and doesn't offend because of its size. -------------- next part -------------- A non-text attachment was scrubbed... Name: bigreplication.pdf Type: application/pdf Size: 45792 bytes Desc: not available URL: <http://gluster.org/pipermail/gluster-users/attachments/20120213/a50096be/attachment-0001.pdf> -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: <http://gluster.org/pipermail/gluster-users/attachments/20120213/a50096be/attachment-0001.pgp>
