| From: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
|---|---|
| To: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
| Cc: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, 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: | 2016-01-29 21:17:23 |
| Message-ID: | CAPpHfdu+bntYj2q=S4L1sR16q+5jD8Hmqun-6ZG-AThQdr118w@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi, Dilip!
On Tue, Jan 19, 2016 at 6:00 PM, Dilip Kumar <dilipbalaut(at)gmail(dot)com> wrote:
>
> On Tue, Jan 19, 2016 at 5:44 PM, Michael Paquier <
> michael(dot)paquier(at)gmail(dot)com> wrote:
>
>> > Test3:
>> > pgbench -i -s 100 postgres
>> > pgbench -c$ -j$ -Mprepared -S postgres
>> >
>> > Client Base Pached
>> >
>> > 1 20555 19404
>> > 32 375919 332670
>> > 64 509067 440680
>> > 128 431346 415121
>> > 256 380926 379176
>>
>> It seems like you did a copy-paste of the results with s=100 and
>> s=300. Both are showing the exact same numbers.
>
>
> Oops, my mistake, re-pasting the correct results for s=100
>
> pgbench -i -s 100 postgres
> pgbench -c$ -j$ -Mprepared -S postgres
>
> Client Base Pached
>
> 1 20548 20791
> 32 372633 355356
> 64 532052 552148
> 128 412755 478826
> 256 346701 372057
>
Could you please re-run these tests few times?
Just to be sure it's a reproducible regression with s=300 and not a
statistical error.
------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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