Date: Tue, 22 Jul 2003 16:56:47 -0400 From: Christopher Weimann <cweimann@k12hq.com> To: Michael Conlen <meconlen@obfuscated.net> Cc: Paul Pathiakis <paul@pathiakis.com> Subject: Re: Tuning for PostGreSQL Database Message-ID: <20030722165647.A48502@smtp.k12us.com> In-Reply-To: <3F1D8E45.7090101@obfuscated.net>; from meconlen@obfuscated.net on Tue, Jul 22, 2003 at 03:19:33PM -0400 References: <200307191818.13516.paul@pathiakis.com> <20030720110939.GN24507@perrin.int.nxad.com> <20030720164237.GC55392@nasby.net> <20030720205339.GP24507@perrin.int.nxad.com> <20030722143449.B10666@smtp.k12us.com> <20030722185527.GU64860@perrin.int.nxad.com> <3F1D8E45.7090101@obfuscated.net>
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On Tue 07/22/2003-03:19:33PM -0400, Michael Conlen wrote: > > >>From loader(8): > > > > kern.maxbcache > > Limits the amount of KVM reserved for use by the buffer > > cache, specified in bytes. The default maximum is 200MB. > > This parameter is used to prevent the buffer cache from > > eating too much KVM in large-memory machine configurations. > > Only mess around with this parameter if you need to greatly > > extend the KVM reservation for other resources such as the > > swap zone or NMBCLUSTERS. Note that the NBUF parameter > > will override this limit. Modifies VM_BCACHE_SIZE_MAX. > > > > Aren't we talking about two different things here, the buffer cache and > the inactive pages? > I think this article clarifies it somewhat but it is a bit old... http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=utf-8&selm=199907290910.CAA06665%40implode.root.com
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