[Xen-devel] Re: xenconsoled CPU denial of service problem

["Daniel P. Berrange" <berrange@xxxxxxxxxx>]

On Wed, Oct 04, 2006 at 11:49:56AM -0500, Anthony Liguori wrote:
> Considering that today in Xen we have a default buffer size, it seems 
> considerably easier to me to just get rid of xenconsoled completely and 
> expand the domU-kernel ring queue to be the actual size of what we're 
> buffering today.
> 
> This eliminates all of these problems and gets rid of a dom0 daemon. 
> Plus, the domU gets taxed for the buffer memory instead of dom0.
> 
> We would then change xenconsole to read the buffer directly.

Its very useful to be able to expose the data as a Psuedo-TTY, as
it lets people use standard toolset for dealing the DomU log data.
eg virt-manager can just connect up a VTE terminal widget straight
to the TTY for a terminal UI. Or tools like ttywatch can log the
data to file, or network, etc. Or minicom for a standard text based
interactive client, etc Forcing everything to use the custom
xenconsole client program would be a step backward.

Dan.
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