[syslog-ng] Performance analysis (was Re: UDP packet loss with syslog-ng)

[Martin Holste]

Cool, thanks for the numbers.  So it took about a 16 MB buffer for you
to get no drops at 16k mps?

On Fri, Oct 15, 2010 at 11:04 PM, Lars Kellogg-Stedman <lars at oddbit.com> wrote:
> I've run a series of tests against our log server, using
> loggen-generated logging rates of 100, 1000, 2000, 4000, 8000, 16000,
> and 32000 messages/sec, and measured the results for each rate using
> socket buffer sizes ranging from 128KB to 16M.  The results show,
> essentially, what buffer size you need to meet a target rate of
> message logging.
>
> So I'm happy now, and I'm getting the sort of rates I expect to be
> able to support.  I figured other folks might like the data.  I've put
> the raw data online as well as a graph of the results:
>
>  http://drop.io/syslog_ng
>
> The graph shows so_rcvbuf() size along the X axis, and packet loss
> along the Y axis.
> ______________________________________________________________________________
> Member info: https://lists.balabit.hu/mailman/listinfo/syslog-ng
> Documentation: http://www.balabit.com/support/documentation/?product=syslog-ng
> FAQ: http://www.campin.net/syslog-ng/faq.html
>
>