It worries me how many threads talk about low performance. I'm about to build out a replica 3 setup and run Ovirt with a bunch of Windows VMs.
Are the issues Tony is experiencing "normal" for Gluster? Does anyone here have a system with windows VMs and have good performance? *Vincent Royer* *778-825-1057* <http://www.epicenergy.ca/> *SUSTAINABLE MOBILE ENERGY SOLUTIONS* On Wed, May 2, 2018 at 7:52 AM Tony Hoyle <[email protected]> wrote: > On 01/05/2018 02:27, Thing wrote: > > Hi, > > > > So is the KVM or Vmware as the host(s)? I basically have the same setup > > ie 3 x 1TB "raid1" nodes and VMs, but 1gb networking. I do notice with > > vmware using NFS disk was pretty slow (40% of a single disk) but this > > was over 1gb networking which was clearly saturating. Hence I am moving > > to KVM to use glusterfs hoping for better performance and bonding, it > > will be interesting to see which host type runs faster. > > 1gb will always be the bottleneck in that situation - that's going too > max out at the speed of a single disk or lower. You need at minimum to > bond interfaces and preferably go to 10gb to do that. > > Our NFS actually ends up faster than local disk because the read speed > of the raid is faster than the read speed of the local disk. > > > Which operating system is gluster on? > > Debian Linux. Supermicro motherboards, 24 core i7 with 128GB of RAM on > the VM hosts. > > > Did you do iperf between all nodes? > > Yes, around 9.7Gb/s > > It doesn't appear to be raw read speed but iowait. Under nfs load with > multiple VMs I get an iowait of around 0.3%. Under gluster, never less > than 10% and glusterfsd is often the top of the CPU usage. This causes > a load average of ~12 compared to 3 over NFS, and absolutely kills VMs > esp. Windows ones - one machine I set booting and it was still booting > 30 minutes later! > > Tony > _______________________________________________ > Gluster-users mailing list > [email protected] > http://lists.gluster.org/mailman/listinfo/gluster-users
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