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Re: [PERFORM] pg_dump and thousands of schemas - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject Re: [PERFORM] pg_dump and thousands of schemas
Date
Msg-id 20120531.230757.2014494683420217075.t-ishii@sraoss.co.jp
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In response to Re: [PERFORM] pg_dump and thousands of schemas  (Robert Klemme <shortcutter@googlemail.com>)
Responses Re: [PERFORM] pg_dump and thousands of schemas  (Robert Klemme <shortcutter@googlemail.com>)
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> On Thu, May 31, 2012 at 10:45 AM, Tatsuo Ishii <ishii@postgresql.org> wrote:
>> Just for record, I rerun the test again with my single-LOCK patch, and
>> now total runtime of pg_dump is 113 minutes.
>> 188 minutes(9.0)->125 minutes(git master)->113 minutes(with my patch).
>>
>> So far, I'm glad to see 40% time savings at this point.
>
> I see only 9.6% savings (100 * (113/125 - 1)).  What am I missing?

What I meant was (100 * (113/188 - 1)).
--
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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