Re: BufFreelistLock

Excerpts from Jim Nasby's message of jue dic 09 16:54:24 -0300 2010:

> Ideally, the clock sweep would be run by bgwriter and not individual backends. In that case it shouldn't matter much what the performance of the sweep is. To do that I think we'd want the bgwriter to target there being X number of buffers on the free list instead of (or in addition to) targeting how many dirty buffers need to be written. This would mirror what operating systems do; they strive to keep X number of pages on the free list so that when a process needs memory it can get it quickly.

Isn't it what it does if you set bgwriter_lru_maxpages to some very
large value?

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Álvaro Herrera 
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