[pgpool-general: 3682] Re: pgpool connection cost
Tatsuo Ishii
ishii at postgresql.org
Tue May 5 07:09:14 JST 2015
>> Regarding memory, pgpool-II require at least about 40MB per pgpool
>> child.
>
>
> Just to be clear, because of terminology.
> What do you mean by pgpool child?
Child process.
> In case of this configuration:
>
> num_init_children = 32
> max_pool = 4
>
> 32 childrens * 4 = 120 pgpool childs?
No, 32 children.
> 120*40MB = 4800MB
So 32*40MB = 1280MB.
> This looks like a bit too much, since it works fine on lower memory
> configuration.
Also please remember that 40MB includes code + library (in my case
about 7.6MB) which can be shared by among pgpool children.
Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp
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