[sheepdog] Why Sheepdog is talking more CPU ?

[Hitoshi Mitake]

At Tue, 23 Jun 2015 11:57:53 +0530,
ankit bhardwaj wrote:
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> I am using 3 node cluster , with 3 copies of disk image. So, each node have
> a full copy of disk image.

Could you provide an option for your sheep processes?

Thanks,
Hitoshi

> 
> 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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