... just some additional info ...
I've run the same test with the config-files in a ram-disk
on both the p3 and the p4 - doesn't make a difference.
The trend is the same - P3 outperforms P4.
I made some more experiments with intels icc-6.0.1 and different CFLAGS for
gcc-3.1.1,
here are some resulte from the test-runs on the p4 box:
(Same setup as described in my previous mail...)
real user sys compiler flags
18,763 15,79 0,340 icc 6.0.1 -O2 -ipo -tpp7 -xW -fno-fnalias
17,687 16,79 0,114 gcc 3.1.1 -O -march=pentium4 -funroll-loops
-fno-strict-aliasing
17,080 16,349 0,127 gcc 3.1.1 -O3 -march=pentium4 -fno-strict-aliasing
-malign-double
So this is nagios doing the config-check. ( -v)
What happens on a multi-cpu-box if it starts to spawn the service-checks in
such
large scale installations as described by Marcus Hildenbrand might be
something
completely different. Any observations or comments?
Rainer Ruecker
--
STAG, Dircksenstrasse 42-44 10178 Berlin, Germany
> -----Original Message-----
> From: Ruecker, Rainer
> Sent: Friday, October 25, 2002 11:55 PM
> To: 'nagios-devel@lists.sourceforge.net';
> 'nagios-users@lists.sourceforge.net'
> Subject: RE: [Nagios-users] Performanceproblems switching to faster
> server
>
>
> Hello,
>
> I could not get my hands on our multiprocessor-boxes here
> (yet) but did a
> few
> tests on two single-cpu machines, just to see what's up with
> the phenomen
> that
> has been described by Markus.
>
> Machine 1: Intel(R) Pentium(R) 4 CPU 2.20GHz, cache size: 512 KB,
> 1024 MB RAM - IDE Disk
> Kernel Linux 2.4.18 sources from kernel.org
>
> Machine 2: Intel(R) Pentium(R) III CPU 1400MHz, cache size: 512 KB,
> 512 MB RAM - SCSI Disk
> Kernel Linux 2.4.7-10 RedHat
>
>
> Binaries from Nagios 1.0b5 have been compiled with the
> following compilers
> on machine 1:
>
> gcc version 2.95.3 20010315 (release)
> gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)
> gcc version 3.0.2 20010905 (Red Hat Linux 7.1 3.0.1-3)
> gcc version 3.1.1 (Thread model: posix)
>
> .configure was called like this for each build:
>
> ./configure --prefix=/tmp/nag-[COMPILERVERSION]
> --with-command-grp=nobody
> --with-init-dir=/etc/init.d
> --with-lockfile=/var/lock/subsys/nagios
> --with-template-objects
> --with-file-perfdata
> --with-cgiurl=/nagios/cgi-bin
> --with-htmurl=/nagios
> --enable-embedded-perl
> --with-perlcache
> --with-template-extinfo
>
> hosts.cfg contains 1281 Hosts
> services.cfg contains 6379 Services
> (There are 1272 Hosts that have all the same 5 service-checks ...)
>
> Here are the average runtimes, taken from 30 runs of "time
> bin/nagios -v
> etc/nagios.cfg"
> for each build
>
> gcc295 gcc296 gcc301
> gcc311
> real user sys real user sys real user
> sys real
> user sys
>
> Maschine 1 17,87 15,44 0,332 19,74 16,59 0,360 18.31 15,77
> 0,344 18,38
> 15,90 0,338
>
> Maschine 2 9,81 9,77 0,039 9,96 9,90 0,036 libc6-error
> libc6-error
>
> No Typo - I suppose it could be the disk subsystem and will
> investigate
> further.
>
> If someone needs the complete results from the 240 test-runs
> or needs more
> details about the setup, just drop me a mail.
>
> Cheers
>
> Rainer Ruecker
> --
> STAG, Dircksenstrasse 42-44 10178 Berlin, Germany
>
>
> > -----Original Message-----
> > From: Marcus Hildenbrand [mailto:marcus.hildenbrand@sap.com]
> > Sent: Tuesday, October 15, 2002 12:43 PM
> > To: nagios-devel@lists.sourceforge.net;
> > nagios-users@lists.sourceforge.net
> > Subject: [Nagios-users] Performanceproblems switching to
> faster server
> >
> >
> > Our current produktive Nagios installation runs on a 4x700
> MHz server
> > with Suse Linux. We are doing an active monitoring of >
> 1.100 servers
> > with > 5.500 services. Because of the known problems with
> > slow CGI's on
> > large configurations we decided to test our Nag
...[email truncated]...
This post was automatically imported from historical nagios-devel mailing list archives
Original poster: RRuecker@PSI.de