| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: SnapshotResetXmin |
| Date: | 2009-01-16 17:36:26 |
| Message-ID: | 1232127386.31669.63.camel@ebony.2ndQuadrant |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Fri, 2009-01-16 at 12:13 -0500, Tom Lane wrote:
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> > Simon Riggs wrote:
> >> SnapshotResetXmin is called 3 times after each statement in
> >> ReadCommitted mode.
>
> > Maybe we could check whether TransState is not TRANS_INPROGRESS and skip
> > it in those cases ...?
>
> Surely this would take longer than the function itself does. What's
> the point of worrying at all?
I thought it *might* be indicative of over zealous coding, thats all.
Better a false-positive than to miss a possible issue.
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
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