I've also tested with XFS but with the same results. Which are the best performance options to store big files? Best regards, David 2013/9/27 David Seira <davidseira at gmail.com> > Hi list, > > I'm trying to deploy a GlusterFS cluster to use as a base filesystem > storage for VMWare ESXi. I want to test the glusterFS performance to store > the virtual machines. > > I've created two VMs with only two replicas, both VM have 16GB of RAM and > 8 CPU at 2 GHz. I've configured the glusterFS volume with the default > parameters. The replication works perfectly; every file is replicated > automatically. For the gluster volume I've used an SSD disk (Kingston > HyperX SSD 3K 120GB with reads at 555MB/s, writes at 510MB/s). > > To test the glusterFS performance, I've configured the GlusterFS cluster > as a storage in another ESXi through NFS. Then I've created a ubuntu > virtual machine in this ESXi. > > For the test, I've used the fio and dd tool. The maximum IOPS I've > achieved using fio for random-write is 2000 and a 70MB/s of transfer rate. > To compare the results I've installed a VM directly into the SSD (without > GlusterFS interaction) and the results are 29K IOPS and 120MB/s. In > sequencial access the result are similar. > > I don't know why the performance is so reduced. > > Are there any special option to configure the replicate mode to increase > this behaviour (big files with a lot of writes)? > > I've also tested the volume with this options: > > nfs.trusted-write: On > performance.write-behind-window-size: 1GB > performance.io-thread-count: 64 > performance.cache-size: 1GB > performance.flush-behind: on > performance.write-behind: on > performance.low-prio-threads: 64 > performance.least-prio-threads: 64 > performance.high-prio-threads: 64 > performance.normal-prio-threads: 64 > performance.nfs.write-behind: on > > But with similar results. > > Any of you have tested GlusterFS as a storage for the ESXi? > > Best regards, > David > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20130930/770fc284/attachment.html>
