| From: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, 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: | 2017-02-17 09:23:28 |
| Message-ID: | CAPpHfdsca5=XpX+5e2SWoxKHgL_yf40yFN-BzVaPUZBUvSai9A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Feb 16, 2017 at 4:58 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Thu, Feb 16, 2017 at 5:07 AM, Alexander Korotkov
> <a(dot)korotkov(at)postgrespro(dot)ru> wrote:
> > 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.
>
> So ... no difference?
Yeah, nothing surprising. It's just another graph based on the same data.
I wonder how pgxact-align-3 would work on machine of Ashutosh Sharma,
because I observed regression there in write-heavy benchmark of
pgxact-align-2.
------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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