Re: [PATCH] speed up SATA

[Timothy Miller]

Jeff Garzik wrote:
> If you are taking your samples over time, that shouldn't matter...  if 
> the system workload is such that you are hitting the drive cache the 
> majority of the time, you're not being "fooled" by cache hits, the patch 
> would be taking those cache hits into account.
>
> If the system isn't hitting the drive cache the majority of the time, 
> statistical sampling will automatically notice that too...


I completely agree, although Jens' patch seems to try to learn the 
drive's maximum speed and go based on that.  Maybe I misread the code. 
Anyhow, it's certainly excellent for a starting point... it's this sort 
of proof-of-concept that gets the ball rolling.  Plus, it's already 
better than Jens says it is.  :)


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