Messages in this thread | | | Date | Thu, 26 Jan 2006 07:35:18 +0800 | From | "Antonino A. Daplas" <> | Subject | Re: [PATCH] vgacon: Add support for soft scrollback |
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Jan Engelhardt wrote: >> This patch adds this feature. The feature and the size of the buffer >> are made as a kernel config option. Besides consuming kernel memory, >> this feature will slow down the console by approximately 20%. > > Slower?
Yes, I mentioned this before. The slowdown is unavoidable because the contents of the scrollback is read from the VGA RAM. It can be speeded up but it will require an overhaul of vgacon to use buffers in system RAM for the entire screen contents, visible and not visible.
Hard scrollback is still the default for vgacon, and soft scrollback has to be selected during kernel config.
> Then I would rather prefer compact oopses.
Of course.
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