| From: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(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: | 2017-02-21 12:22:23 |
| Message-ID: | CAPpHfdv0EaWWF=zbd7QpxogNDMX2sU4VYYEqyy2hy6gSFt_Q=g@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Feb 21, 2017 at 2:37 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2017-02-21 16:57:36 +0530, Ashutosh Sharma wrote:
> > Yes, there is still some regression however it has come down by a
> > small margin. I am not doing initdb for each run instead I am doing,
> > dropdb-->createdb-->pgbench -i. Is dropping old database and creating
> > a new one for every run not okay, Do I have to do initdb every time.
> > Okay, I can change the order of reading and let you know the results.
>
> That does make a difference. Primarily because WAL writes in a new
> cluster are a more expensive than in an old one, because of segment
> recycling.
>
+1
------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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