Re: WIP patch for latestCompletedXid method of computing snapshot xmax - Mailing list pgsql-patches

From Gregory Stark
Subject Re: WIP patch for latestCompletedXid method of computing snapshot xmax
Date
Msg-id 878x7i0vx1.fsf@oxford.xeocode.com
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In response to WIP patch for latestCompletedXid method of computing snapshot xmax  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: WIP patch for latestCompletedXid method of computing snapshot xmax  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-patches
"Tom Lane" <tgl@sss.pgh.pa.us> writes:

> This patch implements Florian's idea about how to manage snapshot xmax
> without the ugly and performance-losing tactic of taking XidGenLock and
> ProcArrayLock at the same time.  I had to do a couple of slightly klugy
> things to get bootstrap and prepared transactions to work, but on the
> whole it seems at least as clean as the code we have now.  Comments?

Just that it will be fascinating to see what effects this has on the
benchmarks.


--
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com

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