Date: Tue, 01 Jul 2008 10:49:11 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: ProAce <proace@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Is it reliable to increase the MAXCPU in param.h ? Message-ID: <4869EF87.4040707@FreeBSD.org> In-Reply-To: <737a6d270806302225y4763ca70ge9dc5084847e05de@mail.gmail.com> References: <737a6d270806302225y4763ca70ge9dc5084847e05de@mail.gmail.com>
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ProAce wrote: > Server: HP DL785G5 with 8 CPU ( 32 cores ) , 16G RAM > OS: FreeBSD 7.0-amd64 > Kernel 1: MAXCPU = 16 ( default ) > Kernel 2: MAXCPU = 32 > > DL785G5 run with kernel 1 and kernel 2 both successfully, and the > FreeBSD can detect the 16 CPUs and 32 CPUs normally ( using top -S > command). > > If I use kernel 2 for postgresql 8.3, is it reliable and stable? 32 should be OK, but we haven't had access to such a machine yet (we briefly had access to a 16-core system but it melted) so we have not yet tuned for performance on it. FreeBSD 8.0 will run better if you are willing to use a development version of FreeBSD. Kris
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