klinuxos at gmail
Apr 19, 2012, 5:46 PM
Post #1 of 2
10G network performance xen-4.1.2
I am testing 10G NICs with linux kernel 3.2.2 and Xen 4.1.2.
If I boot linux kernel 3.2.2 without Xen I get arount 7.3 Gbps performance
between 2 physical servers.
If I boot linux kernel 3.2.2 with xen-4.1.2 hypervisor I get 2 Gbps network
performance between server1-dom0 and server2-dom0. When a dom0 memory and
vcpus are increased (memory = 2G and vcpu = 4) I get maximum 5.2 Gbps
performance. While the maximum server1-domU and server2-domU network
performance I could achieve is 2 Gbps.
Any reason why Xen introduces such a big hit for network performance? Any
pointer or suggestions to try for improving network performance?