Re: Draft release notes for next week's releases - Mailing list pgsql-hackers

From Peter Geoghegan
Subject Re: Draft release notes for next week's releases
Date
Msg-id CAM3SWZTxe7fviX8Nz+a_dY0XuzM_4Nqh-13k1VzYAxSSV7iWqg@mail.gmail.com
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In response to Re: Draft release notes for next week's releases  (Oleg Bartunov <obartunov@gmail.com>)
Responses Re: Draft release notes for next week's releases
List pgsql-hackers
On Mon, Mar 28, 2016 at 12:55 AM, Oleg Bartunov <obartunov@gmail.com> wrote:
>  We'll post the patch.

Cool.

> Teodor made something to get abbreviated keys work as
> I remember. I should say, that 27x improvement I got on my macbook. I will
> check on linux.

I think that Linux will be much faster. The stxfrm() blob produced by
Mac OSX will have a horribly low concentration of entropy. For an 8
byte Datum, you get only 2 distinguishing bytes. It's really, really
bad. Mac OSX probably makes very little use of strxfrm() in practice;
there are proprietary APIs that do something similar, but all using
UTF-16 only.

-- 
Peter Geoghegan



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