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Re: cheaper snapshots redux

From: Markus Wanner <markus(at)bluegap(dot)ch>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Jim Nasby <jim(at)nasby(dot)net>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: cheaper snapshots redux
Date: 2011-08-25 15:15:34
Message-ID: 4E566716.7090804@bluegap.ch (view raw or flat)
Thread:
Lists: pgsql-hackers
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

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