| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(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: | 2016-04-10 04:26:06 |
| Message-ID: | CAA4eK1LNLRWOt4tq5j2pkacJ94a3S_DkaFdjEN3x7Wp5EZiobQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Apr 10, 2016 at 1:13 AM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2016-04-09 22:38:31 +0300, Alexander Korotkov wrote:
> > There are results with 5364b357 reverted.
>
>
What exactly is this test?
I think assuming it is a read-only -M prepared pgbench run where data fits
in shared buffers. However if you can share exact details, then I can try
the similar test.
> Crazy that this has such a negative impact. Amit, can you reproduce
> that?
I will try it.
> Alexander, I guess for r/w workload 5364b357 is a benefit on that
> machine as well?
>
I also think so. Alexander, if try read-write workload with unlogged
tables, then we should see an improvement.
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
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