JFFS3 & performance

[Artem B. Bityuckiy]

On Fri, 17 Dec 2004 jasmine at linuxgrrls.org wrote:

> 
> 
> On Fri, 17 Dec 2004, Artem B. Bityuckiy wrote:
> 
> >> Another idea, calculate the CRC backwards(from the end of the buffer to the beginning).
> >> That give better L1 cache behaviour.
> >>
> > Why (may be some URL)? For all archs?
> 
> Because the process to use the buffer after the CRC will probably start 
> from the beginning.  Processing the CRC from the beginning to the end will 
> tend to leave the L1 cache full of the end of the buffer and thus the next 
> process to use it will need to reload the L1.
> 
> -J.
> 
Ok, I got it, thanks.

--
Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.