On Wed, Jul 1, 2015 at 6:21 AM, Andres Freund <andres@anarazel.de> wrote:
> On 2015-07-01 11:19:40 +0100, Simon Riggs wrote:
>> What "tricks" are being used??
>>
>> Please explain why taking 2 locks is bad here, yet works fine elsewhere.
>
> I didn't say anything about 'bad'. It's more complicated than one
> lock. Suddenly you have to care about lock ordering and such. The
> algorithms for ensuring correctness gets more complicated.
Taking two locks might also be more expensive than just taking one. I
suppose benchmarking will reveal whether there is an issue there.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
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