Looks promising Xavier :-). Pranith ----- Original Message ----- > From: "Xavier Hernandez" <xhernan...@datalab.es> > To: "gluster devel" <gluster-devel@nongnu.org> > Sent: Thursday, February 13, 2014 5:52:45 PM > Subject: [Gluster-devel] Dispersed volume: Initial results > > Hi all, > > I've been able to do the first performance comparison of a dispersed > volume. The translators still have known problems that will be solved as > soon as possible, but at least they support simple tests. I used a very > simple configuration and I compared it to a replicated volume with the > same level of fault tolerance. > > The test environment has been 4 servers based on an Intel Atom D525 1.8 > GHz dual core with 4GB of RAM and 1 TB disk. They are interconnected > through a dedicated 1Gbit switch (this is the environment that I can > dispose of regularly for my tests). 3 servers have been used as bricks, > and the fourth one has been the client. > > The dispersed volume is composed of 3 bricks, with one of them of > redundancy. This has been compared to an standard replica-2 volume with > 2 bricks. > > The tests consist on the sequential write of 1GB file using different > block sizes (all writes aligned to the ida block size). All tests have > been executed 10 times and the average has been taken. IOPS represents > the average number of user-side write operations of the current block > size that can done per second. > > The results are attached in an ods document. This is very preliminary, > it can change, use it with caution. > > As you will see, the network becomes a bottleneck for both tests when > the block size if big enough. > > As an additional comparison, an example scenario with 6 bricks of 1 TB > would have 3 TB of logical space in a distributed-replicated volume, but > 4 TB in a distributed-dispersed volume, a 33% more space but with the > same level of fault tolerance. > > Xavi > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@nongnu.org > https://lists.nongnu.org/mailman/listinfo/gluster-devel >
_______________________________________________ Gluster-devel mailing list Gluster-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/gluster-devel