| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Edson Carlos Ericksson Richter <edsonrichter(at)hotmail(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: After upgrade from 9.2.9 to 9.3.5 got reduced contention |
| Date: | 2014-09-14 00:52:42 |
| Message-ID: | 20140914005242.GA31065@momjian.us |
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| Thread: | |
| Lists: | pgsql-general |
On Sat, Sep 13, 2014 at 07:44:44PM -0300, Edson Carlos Ericksson Richter wrote:
> After a week or so since upgrade from 9.2.9 to 9.3.5 I'm very
> surprised (in a good way) by the gain of performance.
>
> Most noticeable change is the reduced contention for records by
> exclusive/shared locks.
>
> I can see increased numbers of requests fulfilled per minute (but I
> can't be exact on those numbers, just I can see graph going high -
> which is good).
That is very good. The new key-value locking must have helped here. It
was very hard to implement, but I am glad it is showing a benefit.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ Everyone has their own god. +
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