Re: SSI patch version 14

Jeff Davis <pgsql@j-davis.com> wrote:
> On Mon, 2011-01-31 at 14:38 -0600, Kevin Grittner wrote:
>> If I want to try the switch statement from your recent
>> post, what should I use as the OldestXmin value on the call to
>> HTSV?
> 
> I believe RecentGlobalXmin should work.
> 
> And I don't think the original switch statement I posted did the
> right thing for HEAPTUPLE_LIVE. I think that case needs to account
> for the visible flag (if it's live but not visible, that's the
> same as insert-in-progress for your purposes).
I'll try to set this up and see if I can get it to pass the check
and dcheck make targets.  Can we assume that the performance impact
would be too small to matter when we know for sure that hint bits
have already been set?
-Kevin