On Thu, Feb 03, 2000 at 01:15:35AM -0800, Russ Allbery wrote:
> Mark Delany <[EMAIL PROTECTED]> writes:
>
> > I just did a count of a couple of (smallish) log files and I found that
> > on average, qmail-send is logging 469 bytes per delivery and sendmail is
> > logging 430 bytes per delivery. FWIW, the qmail logging is piping into
> > logger.
>
> > My strawman conclusion? qmail and sendmail log similar amounts of data
> > per delivery.
>
> It's not the bytes so much as the lines. I may be extremely confused, but
> I believe that logger and splogger both log each separate line to syslog
> as a separate syslog() call. Each one of these messages therefore
> requires separate handling by the syslogd daemon, a separate disk write,
> and (the part that particular hurts) a separate fsync() call on systems
> that don't support unsync'd syslog logs. The fact that sendmail embeds
> all of the information in two lines per message instead of seven therefore
> makes a big difference.
>
> But see my followup message. Even taking that into account doesn't
> explain how incredibly slow syslogd is.
Oh, absolutely. I certainly wasn't doubting your observations on that front as
I've seen the same sort of load myself. If anything posting those byte counts
only confirmed the syslog has as lot of explaining to do.
Regards.
