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SubjectRe: [PATCH net-next v2 9/9] xen-netback: Aggregate TX unmap operations
On Thu, Dec 12, 2013 at 11:48:17PM +0000, Zoltan Kiss wrote:
> Unmapping causes TLB flushing, therefore we should make it in the largest
> possible batches. However we shouldn't starve the guest for too long. So if
> the guest has space for at least two big packets and we don't have at least a
> quarter ring to unmap, delay it for at most 1 milisec.

Is this solution temporary or permanent? If it is permanent would it
make sense to make these parameter tunable?


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