Date: Wed, 25 May 2005 07:00:03 -0500 From: Eric Anderson <anderson@centtech.com> To: Eric Kjeldergaard <kjelderg@gmail.com> Cc: delphij@freebsd.org, Jeremie Le Hen <jeremie@le-hen.org>, freebsd-current@freebsd.org, Xin LI <delphij@delphij.net> Subject: Re: [CALL FOR TESTERS] VESA High Resolution Console support from DragonFly Message-ID: <429468C3.5040207@centtech.com> In-Reply-To: <d9175cad0505242259265a12e8@mail.gmail.com> References: <20050522112612.GA37841@frontfree.net> <20050523003843.GO850@obiwan.tataz.chchile.org> <1116815005.838.3.camel@spirit> <d9175cad05052421282f757528@mail.gmail.com> <1116999375.731.7.camel@spirit> <d9175cad0505242259265a12e8@mail.gmail.com>
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Eric Kjeldergaard wrote: > 2005/5/25, Xin LI <delphij@delphij.net>: > >>Hi, Eric, >> >>在 2005-05-25三的 13:28 +0900，Eric Kjeldergaard写道： >> >>>2005/5/23, Xin LI <delphij@frontfree.net>: >>> >>>>Hi, Jeremie, >>>> >>>>在 2005-05-23一的 02:38 +0200，Jeremie Le Hen写道： >>>>[snip] >>>> >>>>>One question however : is it supposed to consume more CPU than classical >>>>>non-VESA text mode ? >>>> >>>>I think so, it should consume more CPU than classical text mode console >>>>since it draws characters, rather than giving the responsibility to the >>>>video card. A possible optimization would be to map the video card >>>>memory into the space. >>> >>>Tested on my Thinkpad R40 : Radeon 7500. Is it supposed to consume a >>>LOT of cpu? Perhaps there's something funny with -O2 or similar >>>because some things are VERY slow. I have not, however, noticed any >>>major bugs, but screen redraws will take ~1 second if the screen is >>>not cleared and thus causes powerd to kick my processor up to full >>>speed often. Also, the screensaver (logo_saver) seems to take a while >>>to display. The screen goes black for 10 - 15 seconds before the >>>screen saver displays. Through all this, though, it's still so worth >>>it. >> >>Yes, it requires more CPU cycles if you use raster mode. Does it also >>slow down your console if you are running under text mode? I hope >>not :-) >> > > > If I'm in text mode it's fine, but of course low-res. When I'm in > raster mode I think it's maybe slower than it needs to be? (Slower > than similar situations in Linux, for instance.) Also, if I have some > terminals in text and some in raster, the switch between them is long. > That's hardly a problem by itself, though, as I rarely run mixed > terminal resolutions. I noticed that changing to 16bit (instead of 32 or 24) helped a lot. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology A lost ounce of gold may be found, a lost moment of time never. ------------------------------------------------------------------------help
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