| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
| Cc: | Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, YUriy Zhuravlev <u(dot)zhuravlev(at)postgrespro(dot)ru>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Move PinBuffer and UnpinBuffer to atomics |
| Date: | 2016-02-01 21:35:06 |
| Message-ID: | 20160201213506.GA97603@alvherre.pgsql |
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| Lists: | pgsql-hackers |
Alexander Korotkov wrote:
> Attached patch is rebased and have better comments.
> Also, there is one comment which survive since original version by Andres.
>
> /* Add exponential backoff? Should seldomly be contended tho. */
>
>
> Andres, did you mean we should twice the delay with each unsuccessful try
> to lock?
This is probably a tough patch to review; trying to break it with low
number of shared buffers and high concurrency might be an interesting
exercise.
I know Andres is already pretty busy with the checkpoint flush patch and
I very much doubt he will be able to give this patch a lot of attention
in the short term. Moving to next CF.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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