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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: pgsql-hackers@postgresql.org <pgsql-hackers@postgresql.org>
Subject: Re: pgsql: Add parallel-aware hash joins.
Date: Wed, 24 Jan 2018 14:57:04 -0500
Message-ID: <15913.1516823824@sss.pgh.pa.us> (raw)
In-Reply-To: <14488.1516822307@sss.pgh.pa.us>
References: <30219.1514428346@sss.pgh.pa.us>
	<CAEepm=1OyZcCAxAEWYhmeg0qmWyYF2O2yW7s7A4uVTt-dgRRyQ@mail.gmail.com>
	<4503.1514435195@sss.pgh.pa.us>
	<CAEepm=2rZ6NzdR7Rk5jsXsJR8M_kRmi+0JSY1x6DLSdmBb-=VA@mail.gmail.com>
	<CAEepm=1KTKEKW3KBbZwN6Ohh+rhuXjxC_f-F4VHR8Y6UWC=xVQ@mail.gmail.com>
	<21339.1516633310@sss.pgh.pa.us>
	<24384.1516665190@sss.pgh.pa.us>
	<CA+TgmoZeUY9W30Zzmi6q9JbnF6cGOpaea381M2XmDro+umYVhA@mail.gmail.com>
	<12736.1516749056@sss.pgh.pa.us>
	<CA+TgmoYvHMv-9TKvPAotiYhv_Opj6HSJvkvQ6ReeYsOJceZSqQ@mail.gmail.com>
	<20180124182841.ep7yr6tgqazsoilu@alap3.anarazel.de>
	<14488.1516822307@sss.pgh.pa.us>

I wrote:
> I find that to be a completely bogus straw-man argument.  The point of
> looking at the prairiedog time series is just to see a data series in
> which the noise level is small enough to discern the signal.  If anyone's
> got years worth of data off a more modern machine, and they can extract
> a signal from that, by all means let's consider that data instead.

Just to make the point, I scraped the numbers for skink's "installcheck"
and "check" steps, which are data series I imagine at least Andres will
concede are worth paying attention to.  I made no attempt to clean
outliers, so these curves are pretty noisy, but I think there is a very
clear upward bump since mid-December.

			regards, tom lane

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