David Olofson schrieb:
>
> On Tuesday 20 March 2001 10:37, Erwin Rol wrote:
> > The low latency ppl also warm against using the linux framebuffer
> > drivers, although they
> > don't have hardrealtime so this warning might not be of importance for
> > RTAI.
>
> Right; Linux/lowlatency relies on the Linux scheduler, and the framebuffer
> problem (possibly about to be fixed) is that the fb drivers stay in kernel
> space for extended amounts of time. A fully preemptive RT kernel that
> bypasses Linux (such as RTL or RTAI) wouldn't be affected by that.
>
Is there anybody who could be a bit more specific about this? E.g. I
remember I heard this occurs when _scrolling_ the fb. Does this in turn
mean we're fine without scrolling?
I would appreciate, if somebody could point me to the right resources for this
issue (mailing list, fixing status etc.). The reason is, that there is in deed
a world beside X and to a good part that's based on fb (e.g. QT embedded),
and I would like to use that under low latency conditions.
Thanks
Wilken
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