Re: Should we cacheline align PGXACT?

From: Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Bernd Helmle <mailings(at)oopsware(dot)de>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Should we cacheline align PGXACT?
Date: 2017-02-16 10:07:20
Message-ID: CAPpHfdvBOziwanwwTiVOtzS0OC74tG8gzoKqdoFO7L3T9Gs_yw@mail.gmail.com
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On Wed, Feb 15, 2017 at 8:49 PM, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
wrote:

> Alexander Korotkov wrote:
>
> > Difference between master, pgxact-align-2 and pgxact-align-3 doesn't
> exceed
> > per run variation.
>
> FWIW this would be more visible if you added error bars to each data
> point. Should be simple enough in gnuplot ...

Good point.
Please find graph of mean and errors in attachment.

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company

Attachment Content-Type Size
scalability_pgxact_align-3-rw-errors.png image/png 121.1 KB

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