From owner-freebsd-current Thu Sep 26 20:41: 0 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6F43437B401 for ; Thu, 26 Sep 2002 20:40:59 -0700 (PDT) Received: from zardoc.esmtp.org (adsl-63-195-85-27.dsl.snfc21.pacbell.net [63.195.85.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id D9D0443E6A for ; Thu, 26 Sep 2002 20:40:58 -0700 (PDT) (envelope-from ca@zardoc.esmtp.org) Received: from zardoc.esmtp.org (localhost [127.0.0.1]) by zardoc.esmtp.org (8.12.6.Beta1/8.12.4) with ESMTP id g8R3fIdB028847 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Thu, 26 Sep 2002 20:41:18 -0700 (PDT) Received: (from ca@localhost) by zardoc.esmtp.org (8.12.6.Beta1/8.12.3/Submit) id g8R3fIqD004911; Thu, 26 Sep 2002 20:41:18 -0700 (PDT) Date: Thu, 26 Sep 2002 20:41:17 -0700 From: Claus Assmann To: Zhihui Zhang Cc: freebsd-current@FreeBSD.ORG Subject: Re: Journaled filesystem in CURRENT Message-ID: <20020926204117.A9040@zardoc.esmtp.org> Reply-To: freebsd-current@FreeBSD.ORG References: <20020926113551.A11092@zardoc.esmtp.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from zzhang@cs.binghamton.edu on Thu, Sep 26, 2002 at 02:44:06PM -0400 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, Sep 26, 2002, Zhihui Zhang wrote: > On Thu, 26 Sep 2002, Claus Assmann wrote: > > If someone is interested: > > http://www.sendmail.org/~ca/email/sm-9-rfh.html > > Just as a small data point: I get message acceptance rates of > > 400msgs/s on a journalling file system (using a "normal" PC) that > > writes the data into the journal too. AFAICT that's due to the fact > > that fsync() is much fast for this kind of storage. > > > > The important part for mailservers here is the rate at which content > > files can by safely written to disk. From my limited experience > > journalling file systems are here much better than softupdates. > Can you tell me the approximate sizes of these mails and how they are > stored? The test for sendmail 9 were made with small sizes (1-4KB). They were stored in flat files using 16 directories. The performance tests for sendmail 8 were done with sizes from 1 to 40 KB, in a single queue directory (AFAIR). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message