From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir@xensource.com>
Subject: Re: early_cpu_init() and identify_cpu()
Date: Tue, 17 Jul 2007 08:50:08 +0100
Message-ID: <C2C23340.128BC%keir@xensource.com>
References: <469B4611.76E4.0078.0@novell.com>
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To: Jan Beulich <jbeulich@novell.com>, xen-devel@lists.xensource.com
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On 16/7/07 09:18, "Jan Beulich" <jbeulich@novell.com> wrote:

>> How much faster is scrolling of WC framebuffer on your test system?
> 
> That's a win of about 30%, and using movsq in memcpy() is another win of
> about 50%. Will probably create a vidmemmove()...

That still totally sucks then. Paging a full screen of text of, say 60
lines, done line-by-line will still take, say 60*300ms == 20 seconds(ish).

Implement this as a command-line option only if you must have it.

 -- Keir