Re: 9.5 release notes

On Sat, Aug 8, 2015 at 11:04 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:

> On Sun, Aug 9, 2015 at 01:24:33AM +1200, David Rowley wrote:
> >
> > On 7 August 2015 at 14:24, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> >
> > On Tue, Jun 30, 2015 at 09:00:44PM +0200, Andres Freund wrote:
> > > * 2014-12-08 [519b075] Simon ..: Use GetSystemTimeAsFileTime
> directly in
> > win32
> > > 2014-12-08 [8001fe6] Simon ..: Windows: use
> > GetSystemTimePreciseAsFileTime if ..
> > > Timer resolution isn't a unimportant thing for people using
> explain?
> >
> > This all seemed very internals-only, e.g.:
> >
> > On most Windows systems this change will actually have no
> significant
> > effect on
> > timestamp resolution as the system timer tick is typically
> between 1ms
> > and 15ms
> > depending on what timer resolution currently running
> applications have
> > requested. You can check this with clockres.exe from
> sysinternals.
> > Despite the
> > platform limiation this change still permits capture of finer
> > timestamps where
> > the system is capable of producing them and it gets rid of an
> > unnecessary
> > syscall.
> >
> > Was I wrong?
> >
> >
> >
> > This does have a user visible change. Timestamps are now likely to have 6
> > digits after the decimal point, if they're on a version of windows which
> > supports GetSystemTimePreciseAsFileTime();
> >
> > Master:
> >
> > postgres=# select now();
> > now
> > -------------------------------
> > 2015-08-09 01:14:01.959645+12
> > (1 row)
> >
> > 9.4.4
> > postgres=# select now();
> > now
> > ----------------------------
> > 2015-08-09 01:15:09.783+12
> > (1 row)
>
> Yes, this was already in the release notes:
>
> Allow higher-precision timestamp resolution on <systemitem
> class="osname">Windows 8</> or <systemitem class="osname">Windows
> Server 2012</> and later Windows systems (Craig Ringer)
>
> I am not sure why people were saying it was missing.
>
> --
> Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
> EnterpriseDB http://enterprisedb.com
>
> + Everyone has their own god. +
>
>
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Are we landing pg_tgrm 1.2 in pg 9.5?

If yes (we should), up to an order of magnitude improvements is a worthy
inclusion in the release notes.

--
Arthur Silva