Re: Shave a few instructions from child-process startup sequence

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От Bruce Momjian
Тема Re: Shave a few instructions from child-process startup sequence
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Msg-id 20140308035858.GH16324@momjian.us
обсуждение исходный текст
Ответ на Re: Shave a few instructions from child-process startup sequence  (Gurjeet Singh <gurjeet@singh.im>)
Ответы Re: Shave a few instructions from child-process startup sequence  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
On Sun, Dec  1, 2013 at 12:07:21PM -0500, Gurjeet Singh wrote:
> On Wed, Nov 27, 2013 at 9:12 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> 
> 
>     This is a performance patch, so it should come with benchmark results
>     demonstrating that it accomplishes its intended purpose.  I don't see
>     any.
> 
> 
> Yes, this is a performance patch, but as the subject says, it saves a few
> instructions. I don't know how to write a test case that can measure savings of
> skipping a few instructions in a startup sequence that potentially takes
> thousands, or even millions, of instructions.

Are we saying we don't want this patch?

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + Everyone has their own god. +



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