From owner-freebsd-hackers Fri May 3 1:27:33 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by hub.freebsd.org (Postfix) with ESMTP id 6C3D437B417 for ; Fri, 3 May 2002 01:27:31 -0700 (PDT) Received: by elvis.mu.org (Postfix, from userid 1192) id 42994AE163; Fri, 3 May 2002 01:27:31 -0700 (PDT) Date: Fri, 3 May 2002 01:27:31 -0700 From: Alfred Perlstein To: Patrick Thomas Cc: freebsd-hackers@freebsd.org Subject: Re: RFC on my SHM tunings for multiple jailed postgres... Message-ID: <20020503082731.GI36741@elvis.mu.org> References: <20020503002335.C86733-100000@utility.clubscholarship.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020503002335.C86733-100000@utility.clubscholarship.com> User-Agent: Mutt/1.3.27i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG * Patrick Thomas [020503 00:38] wrote: > > I have a large server that will be running ~24 jails, 8 of which will be > running their own postgres server. You should be aware of the kern.ipc.shm_use_phys sysctl, you might want to try flipping it on if you encounter problems as it will greatly reduce the amount of kernel memory required to track shared memory segments at the expense of making them non-pageable. -- -Alfred Perlstein [alfred@freebsd.org] 'Instead of asking why a piece of software is using "1970s technology," start asking why software is ignoring 30 years of accumulated wisdom.' Tax deductible donations for FreeBSD: http://www.freebsdfoundation.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message