Re: [Xen-devel] PATCH: Jeremy's linux 2.6.33-pvops: wrong gntdev

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

 On 08/04/2010 11:43 AM, Michael Brade wrote:
> XFS has been my filesystem of choice for at least 5 years I think. Never had
> any issues with it. Before I used reiserfs and before that I had ext2/3 but
> that one gave me too many problems so I never tried it again.
>
> Would you recommend anything else instead?
I ask because xfs does some memory mapping tricks which are actually 
fairly awkward to handle in a PV Xen domain.  We end up disabling its 
lazy vunmap behaviour, which means there's a bit more overhead from tlb 
flushes and the like.  I don't know what kind of performance effect that 
actually has, or in what circumstances.
    J

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