Date: Thu, 26 Sep 2002 20:41:17 -0700 From: Claus Assmann <freebsd+current@esmtp.org> To: Zhihui Zhang <zzhang@cs.binghamton.edu> Cc: freebsd-current@FreeBSD.ORG Subject: Re: Journaled filesystem in CURRENT Message-ID: <20020926204117.A9040@zardoc.esmtp.org> In-Reply-To: <Pine.SOL.4.21.0209261442240.3462-100000@onyx>; from zzhang@cs.binghamton.edu on Thu, Sep 26, 2002 at 02:44:06PM -0400 References: <20020926113551.A11092@zardoc.esmtp.org> <Pine.SOL.4.21.0209261442240.3462-100000@onyx>
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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
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