Re: [Qemu-block] [Qemu-devel] [PATCH] qemu-options: explain disk I/O throttling options

[Stefan Hajnoczi]

On Mon, Feb 20, 2017 at 01:40:21PM -0600, Eric Blake wrote:
> On 02/20/2017 10:52 AM, Stefan Hajnoczi wrote:
> > The disk I/O throttling options have been listed for a long time but
> > never explained on the QEMU man page.
> > 
> > Suggested-by: Nini Gu <address@hidden>
> > Cc: Alberto Garcia <address@hidden>
> > Signed-off-by: Stefan Hajnoczi <address@hidden>
> > ---
> >  qemu-options.hx | 25 +++++++++++++++++++++++++
> >  1 file changed, 25 insertions(+)
> > 
> > diff --git a/qemu-options.hx b/qemu-options.hx
> > index 5633d39..b2254cc 100644
> > --- a/qemu-options.hx
> > +++ b/qemu-options.hx
> > @@ -587,6 +587,31 @@ file sectors into the image file.
> >  conversion of plain zero writes by the OS to driver specific optimized
> >  zero write commands. You may even choose "unmap" if @var{discard} is set
> >  to "unmap" to allow a zero write to be converted to an UNMAP operation.
> > address@hidden address@hidden,address@hidden,address@hidden
> > +Specify bandwidth throttling limits in bytes per second, either for all 
> > request
> > +types or for reads or writes only.  Values must be larger than the maximum
> > +request size to avoid timeouts or hangs in the guest.  At minimum use 2 
> > MB/s
> 
> s/At minimum/At a minimum,/
> 
> With that tweak,
> Reviewed-by: Eric Blake <address@hidden>

Will fix when merging.

Stefan

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