Zhangleiqiang <zhangleiqi...@huawei.com> wrote on 08/04/2013 02:13:50 PM:
> I think do multiple benchmarks with the same situation and calc the > average value will eliminate the "side effects". Calculating the average of multiple benchmarks may not solve the issue. For example, if for the dataplane scenario the "other" VM do X IOPs and for no-dataplane the "other" VM do Y IOPs then you may not be comparing apples to apples (unless you consider the "other" VM as part of the results). > > > Last thing, IMHO, you should also evaluate scalability: > > how dataplane and no-dataplane perform when you run multiple VMs ? > > > > For example, > > first 1 VM with 2 VCPUs > > then 2 VMs with 2 VCPUs each > > then 3 VMs with 2 VCPUs each > > ... > > up to 12 VMs with 2 VCPUs each > > > > It seems like you unintentionally tested what happens with 2 VMs when > > you added the "other" VM to create I/O pressure. > > Indeed, the fact I used 2 VMs in previous benchmark is to ensure the > vcpus is less than the host's cores, eg, each vm had 8 vpus. > Thanks for your advice, I will evaluate the scalability, :) Thanks, I am looking forward for the results :)
