[sheepdog-users] cache write speed is high only at the first boot

[Liu Yuan]

On Wed, Aug 14, 2013 at 01:25:44PM +0200, Valerio Pachera wrote:
> It's repeatable (0.7.0_rc0_54_g1cacbba).
> 
> - Import a qcow2.
>   qemu-img convert -f qcow2 wheezy_template.qcow2 sheepdog:qcow2
> 
> - start the guest and run, as usual, dd
>   dd if=/dev/zero of=c bs=1M count 512 oflag=direct
> 
> I get between 100 and 130 M/s.
> 
> I turn off the guest and run it again.
> No modification at all.
> I'm stuck between 40 and 50 M/s.

Could you check dd twice? I think the second dd will boost up

Thanks
Yuan