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Dear Folks,
Our small/medium/intensive Perl Nag 1.2 site was recently redone=20
(roughly) with the 2.0 beta 1 tar ball.
There appear to be no show stoppers.
Performance appears to be at least comparable to a 1.2 embedded Perl Nag=20
with the glib hash patch for hosts and services (unofficial/unsupported=20
patch done by someone else).
Downed host detection and responsiveness to the command pipe is=20
definitely brisker/faster.
Memory consumption seems a little heavier.
Cycle consumption is about the same.
Perl is threaded Perl 5.8.5 (from the FreeBSD port).
tsitc> lynx -dump -auth=3Dfoo:bar=20
'http://tsitc/nagios/cgi-bin/extinfo.cgi?&type=3D4'
Performance Information
Last Updated: Thu Jan 13 16:04:30 EST 2005
Updated every 90 seconds
Nagios=AE - [1]www.nagios.org
Logged in as foo
Program-Wide Performance Information
Active Service Checks:
Time Frame Checks Completed
<=3D 1 minute: 82 (20.3%)
<=3D 5 minutes: 298 (73.8%)
<=3D 15 minutes: 330 (81.7%)
<=3D 1 hour: 333 (82.4%)
Since program start: 333 (82.4%)
Metric Min. Max. Average
Check Execution Time: 0.00 sec 70.81 sec 4.949 sec
Check Latency: 0.00 sec 3.25 sec 0.136 sec
Percent State Change: 0.00% 15.86% 0.19%
Passive Service Checks:
Time Frame Checks Completed
<=3D 1 minute: 0 (0.0%)
<=3D 5 minutes: 0 (0.0%)
<=3D 15 minutes: 0 (0.0%)
<=3D 1 hour: 1 (100.0%)
Since program start: 1 (100.0%)
Metric Min. Max. Average
Percent State Change: 11.97% 11.97% 11.97%
Active Host Checks:
Time Frame Checks Completed
<=3D 1 minute: 1 (0.6%)
<=3D 5 minutes: 1 (0.6%)
<=3D 15 minutes: 2 (1.1%)
<=3D 1 hour: 59 (33.7%)
Since program start: 29 (16.6%)
Metric Min. Max. Average
Check Execution Time: 0.02 sec 0.70 sec 0.052 sec
Check Latency: 0.00 sec 0.00 sec 0.000 sec
Percent State Change: 0.00% 0.00% 0.00%
Passive Host Checks:
Time Frame Checks Completed
<=3D 1 minute: 0 (0.0%)
<=3D 5 minutes: 0 (0.0%)
<=3D 15 minutes: 0 (0.0%)
<=3D 1 hour: 0 (0.0%)
Since program start: 0 (0.0%)
Metric Min. Max. Average
Percent State Change: 0.00% 0.00% 0.00%
On the subject of the embedded Perl however, I would like consider=20
moving it out of the Nagios core and into a standalone Perl daemon=20
listening on a Unix domain socket, via what I think is provided by the=20
event broker.
This would suit me because
1 the Perl execution environment cannot affect Nagios (eg plugins that=20
use modules linked against old Perls causing SEGVs).
As a consequence, leaks in embedded Perl would not affect Nagios (and=20
the Perl daemon could be managed independently of Nag).
2 the Perl daemon could be used to process the small-scale standalone=20
applications (such as SNMP pollers, Ntop data collectors etc) that are=20
used intensively or periodically here.
At this stage, I will try and create the Perl daemon and see how useful=20
it is in its own right.
Integration with the event broker is a TODO if folks think it the way=20
to go (and since I know nothing about the broker maybe much later).
Yours sincerely.
--=20
Stanley Hopcroft
IP Australia
Ph: (02) 6283 3189 Fax: (02) 6281 1353
PO Box 200 Woden ACT 2606
http://www.ipaustralia.gov.au
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