From: erik quanstrom <quanstro@coraid.com>
To: 9fans@9fans.net
Subject: Re: [9fans] ugliness in vesa
Date: Tue, 14 Jul 2009 12:10:20 -0400 [thread overview]
Message-ID: <87b1e377877b7285828eab6953685345@coraid.com> (raw)
In-Reply-To: <7d3530220907140903j55400f88h77301749c5b50f51@mail.gmail.com>
> 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
next prev parent reply other threads:[~2009-07-14 16:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-13 23:57 john
2009-07-14 2:42 ` erik quanstrom
2009-07-14 5:23 ` John Floren
2009-07-14 12:06 ` erik quanstrom
2009-07-14 16:03 ` John Floren
2009-07-14 16:10 ` erik quanstrom [this message]
2009-07-14 16:23 ` John Floren
2009-07-14 16:49 ` erik quanstrom
2009-07-14 4:42 ` lucio
2009-07-14 6:24 ` cinap_lenrek
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