| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
| Cc: | Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, YUriy Zhuravlev <u(dot)zhuravlev(at)postgrespro(dot)ru>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Move PinBuffer and UnpinBuffer to atomics |
| Date: | 2016-04-01 08:39:43 |
| Message-ID: | 20160401083943.GF9074@awork2.anarazel.de |
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| Lists: | pgsql-hackers |
On 2016-04-01 10:35:18 +0200, Andres Freund wrote:
> On 2016-04-01 13:50:10 +0530, Dilip Kumar wrote:
> > I think it needs more number of runs.. After seeing this results I did not
> > run head+pinunpin,
> >
> > Head 64 Client 128 Client
> > -----------------------------------------------------
> > Run1 434860 356945
> > Run2 275815 *275815*
> > Run3 437872 366560
> > Patch 64 Client 128 Client
> > -----------------------------------------------------
> > Run1 429520 372958
> > Run2 446249 *167189*
> > Run3 431066 381592
> > Patch+Pinunpin 64 Client 128 Client
> > ----------------------------------------------------------
> > Run1 338298 642535
> > Run2 406240 644187
> > Run3 595439 *285420 *
>
> Could you describe the exact setup a bit more? Postgres settings,
> pgbench parameters, etc.
>
> What's the size of BufferDesc after applying the patch?
One interesting thing to do would be to use -P1 during the test and see
how much the performance varies over time.
Greetings,
Andres Freund
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