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Subject: Re: My vote for BMP cache removal

Re: My vote for BMP cache removal

From: Linus Nielsen Feltzing <>
Date: Wed, 01 Feb 2006 08:56:43 +0100

> There seems to be an additional area for gaining performance -
> it was reported that WPS loading on iPod is way faster than on
> iriver. The CPU speed is similar, so I can only imagine 2
> possible causes: (1) The iriver ATA driver needs optimising. (2)
> The endian swap in fat.c.

My measurements show that the current ATA driver gives us roughly
5.2Mbytes/s transfers at 124Mhz. A simple asm optimization gave
7.8Mbytes/s for burst-aligned transfers.

Received on 2006-02-01

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