[sheepdog] Why Sheepdog is talking more CPU ?

[ankit bhardwaj]

I am using 3 node cluster , with 3 copies of disk image. So, each node have
a full copy of disk image.

On Tue, Jun 23, 2015 at 10:37 AM, Vasiliy Tolstov <v.tolstov at selfip.ru>
wrote:

> 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
>



-- 
Ankit Bhardwaj
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