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-Original Message-
From: pgsql-general-ow...@postgresql.org
[mailto:pgsql-general-ow...@postgresql.org] On Behalf Of Tom Lane
Sent: 07 July 2016 18:02
To: Stephen Frost
Cc: Merlin Moncure ; FarjadFarid(ChkNet)
; Alvaro Herrera ;
PostgreSQL General
Subject: Re: [GENERAL] Fastest memmove in C
Stephen
Stephen Frost writes:
> While I agree with this, I'm trying to figure out why this isn't being
> incorporated into glibc instead..?
Indeed --- it seems far more useful to integrate this sort of work at
the libc level than to ask applications to support their own replacements
for libc routines.
* Merlin Moncure (mmonc...@gmail.com) wrote:
> Well, testing is the key here. Microbechmarks demonstrating the value
> are not enough; proven statistically relevant benchmarks generated
> from postgres are the data points needed to make an assessment. My
> recommendation would be to dynamically li
On Thu, Jul 7, 2016 at 6:12 AM, FarjadFarid(ChkNet)
wrote:
>
>
> Hi Álvaro,
>
> Based on the article. This research has been tested with various hardware.
> The code automatically detects the hardware and based on the size of memory
> to be copied it will choose one of 3 routines.
>
> Regarding li
On Behalf Of Alvaro Herrera
Sent: 06 July 2016 22:15
To: FarjadFarid(ChkNet)
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] Fastest memmove in C
FarjadFarid(ChkNet) wrote:
> Excellent research and could be well worth checking out. As it could
> improve the performance of postgresql e
FarjadFarid(ChkNet) wrote:
> Excellent research and could be well worth checking out. As it could
> improve the performance of postgresql engine.
0) We certainly do a lot of memory copying.
1) this work is under the "Code Project Open License" which doesn't look
compatible with our Postgres lice
Just came across this excellent research work done on memmove by T Herselman.
Bearing in mind memory is constantly moved in any database. This excellent set
of library would be very handy for those who work
at the deep end of postgresql.
In a nut shell, the library checks the hardwa
