On 26 Feb 2004 at 13:58, Dror Matalon wrote:

> which brings me back to my question why not make Freebsd use more of its
> memory for disk caching and then tell postgres about it.

I think there is some confusion about maxbufsize and hibufspace.  I looking at a comment in the FreeBSB  source 4.9 that explains this.  I think you will want to increase effective_cache to match maxbufsize not hibufspace but I could be wrong.

$FreeBSD: src/sys/kern/vfs_bio.c,v line 363

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