Re: cheaper snapshots redux

Tom,

On 08/25/2011 04:59 PM, Tom Lane wrote:
> That's a good point.  If the ring buffer size creates a constraint on
> the maximum number of sub-XIDs per transaction, you're going to need a
> fallback path of some sort.

I think Robert envisions the same fallback path we already have:
subxids.overflowed.

Regards

Markus Wanner