From owner-freebsd-hackers Thu Dec 5 5: 5: 9 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5221337B401; Thu, 5 Dec 2002 05:05:08 -0800 (PST) Received: from apache.metrocom.ru (www.metrocom.ru [195.5.128.139]) by mx1.FreeBSD.org (Postfix) with ESMTP id 072AB43EBE; Thu, 5 Dec 2002 05:05:07 -0800 (PST) (envelope-from alex@metrocom.ru) Received: from apache.metrocom.ru (localhost [127.0.0.1]) by apache.metrocom.ru (8.12.3/8.12.3) with ESMTP id gB5D4sck013771; Thu, 5 Dec 2002 16:04:54 +0300 (MSK) Received: from localhost (alex@localhost) by apache.metrocom.ru (8.12.3/8.12.3/Submit) with ESMTP id gB5D4rCP013768; Thu, 5 Dec 2002 16:04:53 +0300 (MSK) X-Authentication-Warning: apache.metrocom.ru: alex owned process doing -bs Date: Thu, 5 Dec 2002 16:04:53 +0300 (MSK) From: Varshavchick Alexander To: Terry Lambert Cc: , Subject: Re: maxusers and random system freezes In-Reply-To: <3DEF2573.D8C66C11@mindspring.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 On Thu, 5 Dec 2002, Terry Lambert wrote: > IMO, KVA need to be more than half of physical memory. But I tend > to use a lot of mbufs and mbuf clusters in products I work on lately > (mostly networking stuff). If you don't tune kernel memory usage up, > then you may be able to get away with 2G. A question arises. The value 256 (1G KVA space) acts as a default for any system installation, not depending of real phisical memory size. So for any server with RAM less than 2G (which is a majority I presume) the KVA space occupies more than half of physical memory. It can even be more than TOTAL phisical memory for servers with RAM less than 1G. Isn't it bad for a system? It seems that it is not. Then why cannot the KVA space always be made as some big value? If it is important for servers with large RAM, why it is not or a smaller servers? Can anybody besides Terry which seems to be unavailable now help? Regards ---- Alexander Varshavchick, Metrocom Joint Stock Company Phone: (812)118-3322, 118-3115(fax) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message