12x performance drop on md/linux+sw raid1 due to barriers [xfs]

[Martin Steigerwald]

Am Sonntag 14 Dezember 2008 schrieb Peter Grandi:
> First of all, why are you people sending TWO copies to the XFS
> mailing list? (to both linux-xfs at oss.sgi.com and xfs at oss.sgi.com).
[...]
> > So its really more of an expectation that wc+barriers on,
> > performs better than wc+barriers off :)
>
> This is of course a misstatement: perhaps you intended to write
> that ''wc on+barriers on'' would perform better than ''wc off +
> barriers off'.

I think Redeeman said exactly that ;-). Either both on or both off.

-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
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