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Re: [Xen-devel] watches not working from domU userspace

On 2 Jan 2006, at 11:24, Cihula, Joseph wrote:

It seems like this would add a lot of overhead.  Xenstore commands are
typically only a couple hundred bytes and since they are synchronous
(per client and excluding watches), this would leave a lot of the page
unused. Moreover, for transient clients, such as xenstore-{read, write,
rm}, the extra setup/teardown would also add to the cost.

Those overheads will certainly be insignificant. Far more important concerns are a clean design and small (as possible) implementation, with as little code/logic duplication as possible.

Implementing a proxy xenstored in the kernel for the use of userland code is not a nice solution. :-)

 -- Keir

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