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
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