Re: [Xen-devel] tapdisk in debian 3.11 kernel

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

2013/12/7 James Harper <james.harper@xxxxxxxxxxxxxxxx>

>
> I advise you to try qdisk instead of blktap, the performance increasing is very
> big.
> With systems such as windows that uses the disk even when it could use a lot
> of ram still free, the difference is clearly visible.
>
> Here one screenshot of benkmark when I switch from blktap2 of debian
> package to qdisk of upstream qemu some months ago:
> http://lists.xen.org/archives/html/xen-devel/2013-07/jpgV4ajjhOQ11.jpg
>
> I did the benkmark on windows 7 with your gplpv.
>

I'm actually using ceph as the backend, and also using it on PV DomU's. Is qdisk only for HVM?

James

Is also for pv domUs, I use qdisk for both pv and hvm for months and no problem found, only performance increased.

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