Re: [RFC] PVFB: Add refresh period to XenStore parameters?

[Samuel Thibault <samuel.thibault@eu.citrix.com>]

Hello,

There was no comment on my proposition below, should I consider that it
means people are fine with it? :)

Samuel

Samuel Thibault, le Fri 29 Feb 2008 12:08:07 +0000, a écrit :
> Sometimes the backend of PVFB knows that it doesn't need permanent
> refresh, when the window is minimized for instance (no refresh at all),
> or the administration tools know that the window is thumnailed, and so a
> slow refresh rate is fine.  Also, some users may want to tune the
> refresh rate according to the smoothness they would like, balanced with
> the CPU time that requires.
> 
> I've played with that idea a bit and it seems to work fine, saving
> computations and communications.  I'm now wondering about the interface:
> it looks to me like it could be as simple as a "refresh-period" node in
> the backend part of XenStore: the front-end would watch it, and update
> the timing of its internal refresh loop, xenfb_fps in the case of Linux'
> xenfb for instance.  A period of 0 would mean that no refresh is needed
> (e.g. minimized window)