Re: Add GUC to tune glibc's malloc implementation.

Поиск
Список
Период
Сортировка
Искать
От
Andres Freund
Тема
Re: Add GUC to tune glibc's malloc implementation.
Дата
Msg-id
20230626205907.rmuzjwsbkzz7vdtw@awork3.anarazel.de
Ответ на
Список
Дерево обсуждения
Add GUC to tune glibc's malloc implementation. Ronan Dunklau <ronan.dunklau@aiven.io>
Re: Add GUC to tune glibc's malloc implementation. Andres Freund <andres@anarazel.de>
Re: Add GUC to tune glibc's malloc implementation. Tom Lane <tgl@sss.pgh.pa.us>
Re: Add GUC to tune glibc's malloc implementation. Ronan Dunklau <ronan.dunklau@aiven.io>
Re: Add GUC to tune glibc's malloc implementation. Tom Lane <tgl@sss.pgh.pa.us>
Re: Add GUC to tune glibc's malloc implementation. Peter Eisentraut <peter@eisentraut.org>
Re: Add GUC to tune glibc's malloc implementation. Ronan Dunklau <ronan.dunklau@aiven.io>
Re: Add GUC to tune glibc's malloc implementation. Andres Freund <andres@anarazel.de>
Re: Add GUC to tune glibc's malloc implementation. Ronan Dunklau <ronan.dunklau@aiven.io>
Re: Add GUC to tune glibc's malloc implementation. Ronan Dunklau <ronan.dunklau@aiven.io>
Re: Add GUC to tune glibc's malloc implementation. Andres Freund <andres@anarazel.de>
Re: Add GUC to tune glibc's malloc implementation. Ronan Dunklau <ronan.dunklau@aiven.io>
Re: Add GUC to tune glibc's malloc implementation. Andres Freund <andres@anarazel.de>
Re: Add GUC to tune glibc's malloc implementation. Daniel Gustafsson <daniel@yesql.se>
Hi,

On 2023-06-22 15:35:12 +0200, Ronan Dunklau wrote:
> This can cause problems. Let's take for example a table with 10k rows, and 32 
> columns (as defined by a bench script David Rowley shared last year when 
> discussing the GenerationContext for tuplesort), and execute the following 
> query, with 32MB of work_mem:
> 
> select * from t order by a offset 100000;
>
> I attached the results of the 10k rows / 32 columns / 32MB work_mem benchmark 
> with different values for glibc_malloc_max_trim_threshold.

Could you provide instructions for the benchmark that don't require digging
into the archive to find an email by David?

Greetings,

Andres Freund


В списке pgsql-hackers по дате отправления
От: Joel Jacobson
Дата:
Сообщение: Re: Do we want a hashset type?
От: Andres Freund
Дата:
FAQ