From owner-freebsd-hackers Tue Mar 20 10:27:16 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id BF0F537B719; Tue, 20 Mar 2001 10:27:09 -0800 (PST) (envelope-from bright@fw.wintelcom.net) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id f2KINog23123; Tue, 20 Mar 2001 10:23:50 -0800 (PST) Date: Tue, 20 Mar 2001 10:23:50 -0800 From: Alfred Perlstein To: Matt Dillon Cc: "Michael C . Wu" , izero@ms26.hinet.net, cross@math.psu.edu, grog@FreeBSD.ORG, fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: tuning a VERY heavily (30.0) loaded scerver Message-ID: <20010320102350.V29888@fw.wintelcom.net> References: <20010320111144.A51924@peorth.iteration.net> <20010320092717.R29888@fw.wintelcom.net> <20010320113818.B52586@peorth.iteration.net> <20010320120112.C52586@peorth.iteration.net> <200103201815.f2KIFR594803@earth.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200103201815.f2KIFR594803@earth.backplane.com>; from dillon@earth.backplane.com on Tue, Mar 20, 2001 at 10:15:27AM -0800 X-all-your-base: are belong to us. Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Matt Dillon [010320 10:16] wrote: > > :Another problem is that we have around 4000+ processes accessing > :lots of SHM at the same time.. > > How big is 'lots'? If the shared memory segment is smallish, e.g. > less then 64MB, you should be ok. If it is larger then you will > have to do some kernel tuning to avoid running out of pmap entries. kern.ipc.shm_use_phys should remove the need for pv entries. it's the default on solaris. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message