From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@coraid.com>
Date: Tue, 14 Jul 2009 12:10:20 -0400
To: 9fans@9fans.net
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In-Reply-To: <7d3530220907140903j55400f88h77301749c5b50f51@mail.gmail.com>
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Subject: Re: [9fans] ugliness in vesa
Topicbox-Message-UUID: 202883d8-ead5-11e9-9d60-3106f5b1d025

> I believe I properly applied the pat patch, but I'm not really seeing
> any improvement. At least, it still takes fully two seconds to bring
> one large window in front of another.

that's because the screen is not double-buffered.  pat or mtrr do
not improve reads from video memory.  there is no such thing
as read combining.  and on some nvidia cards, especially the pcie
ones i have, reads from video memory are really slow.

> Did you change anything with the nvidia driver when applying the mtrr
> patch? I was under the impression that the applied patch only affected
> the vesa driver.

only the one line previously posted.  (a similar change was made to the
vesa driver, of course.)

- erik