Horton

Re: optimizing repeated MVCC snapshots

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Florian Weimer <fweimer@bfk.de>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Simon Riggs <simon@2ndquadrant.com>, Noah Misch <noah@leadboat.com>, Bruce Momjian <bruce@momjian.us>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2012-01-05T14:35:45Z
Lists: pgsql-hackers 
On Thu, Jan 5, 2012 at 9:01 AM, Florian Weimer <fweimer@bfk.de> wrote:
> * Robert Haas:
>> and (c) architectures (like 32-bit x86) where ordinary 64-bit
>> operations aren't atomic but special instructions (cmpxchg8b) can be
>> used to get that behavior.
>
> FILD and FIST are atomic, too, and are supported by more
> micro-architectures.

Yeah, I think you (or someone) mentioned the code.  If someone wants
to write the code, I'm game...

-- 
Robert Haas
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