Date: Sat, 28 Sep 2002 17:57:09 -0400 (EDT) From: Zhihui Zhang <zzhang@cs.binghamton.edu> To: Claus Assmann <freebsd+current@esmtp.org> Cc: freebsd-current@FreeBSD.ORG Subject: Re: Journaled filesystem in CURRENT Message-ID: <Pine.SOL.4.21.0209281753450.2260-100000@opal> In-Reply-To: <20020926204117.A9040@zardoc.esmtp.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 26 Sep 2002, Claus Assmann wrote: > 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). Hope I can bother you with two more questions (I know nothing about sendmail beyond its name): (1) Can sendmail be configured to generate automatic messages for the purpose of performance test? (2) Is each mail stored in its own file? Thanks, -Zhihui To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.SOL.4.21.0209281753450.2260-100000>