Re: FreeBSD 5.3b7and poor ata performance

Hello Scott,

Scott Long wrote:
>> no, it is my home PC in which I work so it's important stability
>> (not overclocking) and disk redundancy (vinum, gmirror)
> 
> 
> No, I think that he is saying that the ATA silicon is marginal and
> probably overclocked by the vendor, not that you have overclocked your
> CPU.

ok, it was a bad interpretation.


>> Also, there is an unresolvable question. Why two 52MB/s disks
>> in raid0 has a throughput of 40MB/s and for raid1 18MB/s??
> 
> 
> Would you _PLEASE_ stop trying to associate RAID with performance!
> RAID is about reliability and reduncdancy, not about speed.  Some
> cases can give you desirable performance increases as a side effect,
> but that is not the primary goal.  Specifically in this case, the
> GEOM raid classes are fairly new and have not had the benefit of
> years of testing.  I'd much rather that the focus be on stability
> and reliability for them, not speed.  Once the primary goals of
> RAID are satisfied then we can start looking at performance.

The whole story is run a raid 10 configuration, so I have the best
of both words, redundancy with gmirror and speed with gstripe. I
don't see why it couldn't be that way and because this RAID0
performance is important in my case.