[sheepdog] Why Sheepdog is talking more CPU ?

[Vasiliy Tolstov]

2015-06-23 1:40 GMT+03:00 ankit bhardwaj <ankitbhrdwj27 at gmail.com>:
> I am new to Sheepdog. Though I have gained enough knowledge to deploy and
> use sheepdog for qemu-kvm VMs. I tried to benchmark Sheepdog and found that:
>
> 1. Sheepdog's Maximum Read/Write Speed is around 70-80% compared to local
> storage. That too when the condition are in favour of sheepdog. Example:
> Full copy of data on same node and Reading or writing sequential Data etc.
>
> 2. When using VM disk image to boot VM from Sheepdog storage, some extra
> system activities increase the load on the CPU from 30-40%.
>
> Can you please tell me,:
> Why the speed is slow, even if all the data is on the same machine ?
> What activity in sheepdog is eating up my processor cycles ?
>
>
> Sorry for the loosely described experiments and results.


I think we need command line for running sheepdog and how you format
you cluster (erasure coded or replicas) ?

-- 
Vasiliy Tolstov,
e-mail: v.tolstov at selfip.ru