Re: Move PinBuffer and UnpinBuffer to atomics - Mailing list pgsql-hackers

From Amit Kapila
Subject Re: Move PinBuffer and UnpinBuffer to atomics
Date
Msg-id CAA4eK1JAzLGEWVF0NO7SOTpeB1YTFxnjE-VZ7cCizHRzF=DqTA@mail.gmail.com
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In response to Re: Move PinBuffer and UnpinBuffer to atomics  (Andres Freund <andres@anarazel.de>)
List pgsql-hackers
On Tue, Apr 5, 2016 at 9:00 PM, Andres Freund <andres@anarazel.de> wrote:
>
> On 2016-04-05 20:56:31 +0530, Amit Kapila wrote:
> > This fluctuation started appearing after commit 6150a1b0 which we have
> > discussed in another thread [1] and a colleague of mine is working on to
> > write a patch to try to revert it on current HEAD and then see the results.
>
> I don't see what that buys us. That commit is a good win on x86...
>

At least, that way we can see the results of pin-unpin without fluctuation.  I agree that we need to narrow down why even after reducing BufferDesc size, we are seeing performance fluctuation.

With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

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