Testers Needed: New 3.x Speedups

[nap]

Hi Ethan,

Have you look at my patch for speed up the host circular check?
Thanks a lot,

I'll check the new code too.


Jean

On Fri, Feb 29, 2008 at 12:29 AM, Ethan Galstad <nagios at nagios.org> wrote:
> I just posted new code to CVS that I would like some testers to verify.
>   The CVS commits introduce new skiplist algorithms for lists that are
>  used for searching for objects, etc.
>
>  We've been doing some testing of Nagios 3 with 50,000 hosts/services on
>  a rather low end box to find performance problems.  Startup times in our
>  configuration (tested with the -sx command line) indicated that it took
>  about 4 minutes to read and process the (uncached) config files.  The
>  new code does the same operations in just 18 seconds, so its a huge
>  performance increase.
>
>  In order to ensure the new code doesn't have bugs (it affects major
>  portions of the logic), I'm looking for people with large/complex
>  configs to help verify the new code's correctness.
>
>  This can be done by doing two sets of tests - the first using binaries
>  from the 3.0rc3 release and the other with binaries the new CVS code.
>
>  1. Test timing of startup routines with:
>
>  time /usr/local/nagios/bin/nagios -sx /usr/local/nagios/etc/nagios.cfg
>
>  2.  Make sure that no errors are reported and that the object counts for
>  each type of object (host, service, etc.) are the same for 3.0rc3 and
>  latest CVS code:
>
>  /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
>
>
>  Please post to the list with any bugs you may encounter, or if you see
>  great speed improvements. :-)
>
>  FYI, the current event queue implementation has very bad performance
>  with large installs.  Startup timing (-sx) tests with Nagios 3.0rc3
>  showed it taking ~100 seconds to initially 50,000 events.  I did a bit
>  of testing with the new skiplist algorithm, and the event scheduling
>  time dropped to *1* second.  This will be implemented in a CVS commit in
>  a few days.
>
>
>
>  Ethan Galstad
>  Nagios Developer
>  ___
>  Email: nagios at nagios.org
>  Web:   www.nagios.org
>
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