From: erik quanstrom <quanstro@coraid.com>
To: 9fans@9fans.net
Subject: Re: [9fans] image/memimage speed
Date: Mon, 1 Dec 2008 09:33:43 -0500 [thread overview]
Message-ID: <7607005a544d6ca43080fadffc99d8f5@coraid.com> (raw)
In-Reply-To: <6f7e7e49983f41223da6564795f1097e@quintile.net>
>
> Very true, the only exception to this I know of is some of the modern
> Dual PCIExpress cards which use a bus in each direction.
>
do you have a reference for "dual pciexpress"? as far as i know,
pcie/agp/pci cards only have a single bus that goes both ways.
my limited understanding was that the reason that reading the
framebuffer was slow, was that there is no framebuffer. it's an
illusion that the card provides that's easy to write but not so
easy to fake on reads.
someone with real understanding of graphics please correct me.
- erik
next prev parent reply other threads:[~2008-12-01 14:33 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-30 22:00 Iruata Souza
2008-11-30 23:54 ` Iruata Souza
2008-12-01 1:29 ` erik quanstrom
2008-12-01 1:54 ` andrey mirtchovski
2008-12-01 2:35 ` erik quanstrom
2008-12-01 3:30 ` andrey mirtchovski
2008-12-01 6:41 ` Paul Lalonde
2008-12-01 14:19 ` Steve Simon
2008-12-01 14:33 ` erik quanstrom [this message]
2008-12-05 6:39 ` ron minnich
2008-12-05 13:35 ` erik quanstrom
2008-12-05 18:27 ` Russ Cox
2008-12-05 18:32 ` Russ Cox
2008-12-05 18:49 ` ron minnich
2008-12-05 19:21 ` Paul Lalonde
2008-12-05 19:25 ` erik quanstrom
2008-12-05 19:30 ` Paul Lalonde
2008-12-05 19:40 ` erik quanstrom
2008-12-05 20:11 ` ron minnich
2008-12-06 5:52 ` Paul Lalonde
2008-12-07 17:00 ` Aki Nyrhinen
2008-12-07 23:22 ` erik quanstrom
2008-12-08 0:17 ` Aki Nyrhinen
2008-12-01 15:24 plalonde
2008-12-05 5:22 ` sqweek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7607005a544d6ca43080fadffc99d8f5@coraid.com \
--to=quanstro@coraid.com \
--cc=9fans@9fans.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).