Re: [HACKERS] Time to up bgwriter_lru_maxpages?

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От Andres Freund
Тема Re: [HACKERS] Time to up bgwriter_lru_maxpages?
Дата
Msg-id 20170202002835.mrmpauaxkp34entx@alap3.anarazel.de
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Ответ на Time to up bgwriter_lru_maxpages?  (Jim Nasby <Jim.Nasby@BlueTreble.com>)
Ответы Re: [HACKERS] Time to up bgwriter_lru_maxpages?  (Robert Haas <robertmhaas@gmail.com>)
Re: [HACKERS] Time to up bgwriter_lru_maxpages?  (Jim Nasby <Jim.Nasby@BlueTreble.com>)
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On 2016-11-28 11:40:53 -0800, Jim Nasby wrote:
> With current limits, the most bgwriter can do (with 8k pages) is 1000 pages
> * 100 times/sec = 780MB/s. It's not hard to exceed that with modern
> hardware. Should we increase the limit on bgwriter_lru_maxpages?

FWIW, I think working on replacing bgwriter (e.g. by working on the
patch I send with a POC replacement) wholesale is a better approach than
spending time increasing limits.

- Andres



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