| From: | Yeb Havinga <yebhavinga(at)gmail(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Jaime Casanova <jaime(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Sync Rep and shutdown Re: Sync Rep v19 |
| Date: | 2011-03-21 22:58:15 |
| Message-ID: | AANLkTinYRqDU=zkJSPAy+f2BiYhNCX_NomtDRTBWNvA4@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On Mon, Mar 21, 2011 at 7:51 PM, Yeb Havinga <yebhavinga(at)gmail(dot)com> wrote:
> On 2011-03-21 18:04, Robert Haas wrote:
>
>> On Mon, Mar 21, 2011 at 12:29 PM, Yeb Havinga<yebhavinga(at)gmail(dot)com>
>> wrote:
>>
>>> pgbench -i -s 50 test
>>> Two runs of "pgbench -c 10 -M prepared -T 600 test" with 1 sync standby -
>>> server configs etc were mailed upthread.
>>>
>>> - performance as of commit e148443ddd95cd29edf4cc1de6188eb9cee029c5
>>>>
>>> 1158 and 1306 (avg 1232)
>>>
>>>> - performance as of current git master
>>>>
>>> 1181 and 1280 (avg 1230,5)
>>>
>>>> - performance as of current git master with
>>>> sync-standbys-defined-rearrangement applied
>>>>
>>> 1152 and 1269 (avg 1210,5)
>>>
>>
>
> IMO what these tests have shown is that there is no 20% performance
> difference between the different versions. To determine if there are
> differences, n should be a lot higher, or perhaps a single one with a very
> large duration.
pgbench -T 3600:
sync-standbys-defined-rearrangement 1270 tps
current git master 1306 tps
--
Yeb Havinga
http://www.mgrid.net/
Mastering Medical Data
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