We have two different network on two similar switches. One is our 192.168.1.0/24 and other is 192.168.2.0/24 network. Our switch capacity is 1000Mbps and so does our NIC cards on Host machines.
On n/w 192.168.1.0/24, we are using xenserver 6.2 to deploy our Virtual machines and we can able to achieve persistent 75 to 80 MB/s speed while transferring (via scp) one 12GiB file from one VM to another VM on same Xenserver. We are using 192.168.2.0/24 network for our cloudstack setup. We have used following software with their version to establish out private cloud: Cloudstack = v4.4.2 Management Server On = Centos 6.4 x86_64 bit Xenserver as a hypervisor = v6.2 (similar configuration of machine as we have used in 192.168.1.0/24 n/w) FreeNAS as a Primary and Secondary Storage via NFS = v9.3 (filesystem is ZFS based) Virtual Machine OS = Centos 6.5 x86_64 bit We are using basic networking with its all default configurations but we are not able to achieve at least 60 to 65 MB/s of transferring speed. In cloud If we start scp from one machine to another machine then our transferring speed starts from 63 MB/s and then its keep falling till 20 to 25 MB/s. Would you please tell us that what we are missing here. Is ther any kind of global setting we need to configure so that at least we can achieve more than 50 MB/s transferring speed between two guest VM. Thanks and Regards PankaJ Singh
