Re: [Xen-devel] [PATCH] x86/PoD: skip eager reclaim when possible

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 10/05/16 14:44, Jan Beulich wrote:
> Reclaiming pages is pointless when the cache can already satisfy all
> outstanding PoD entries, and doing reclaims in that case can be very
> harmful to performance when that memory gets used by the guest, but
> only to store zeroes there.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Possibly worth mentioning a dd from /dev/zero as the most likely action
to trigger this.

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