Subject: Re: FreeBSD Bus DMA
To: Ted Lemon <email@example.com>
From: Justin T. Gibbs <firstname.lastname@example.org>
Date: 06/11/1998 21:47:13
>> Does that mean that the FreeBSD development should move forward,
>> and then when we have reproduceable benchmarks on FreeBSD, then
>> you can choose to adopt our code, or leave it be?
>Why do you have to have different code? Why not try the current code
>on for size, see how it works, and *then* propopose i386-specific
>enhancements if the need arises?
The callback change came about because the need to preallocate all bounce
resources for the worst case scenario would cause a noticeable performance
penalty when compared to the bouncing mechanism it would replace. The
change was made to address a specific and measurable problem.