Execution Queue and latency

[Bishop, Dean]

well, assuming that you haven't modified "check_ping" it uses 4 pings to
test the OK'ness.

On my system it takes just over 4seconds to check_ping a host on the LAN.

4 seconds * 70 hosts = 280 seconds or just under 5 minutes.

so it will take about 5 minutes just to do the check_pings if things are OK.
it just gets worse if things are not OK because then each of the four pings
would have to timeout (defaults to 10seconds).

2 suggestions

1) use:

        command_line   /opt/nagios/libexec/check_ping -H $HOSTADDRESS$ -w
$ARG1$ -c $ARG2$ -p 1 -t 5

2) use:

	        command_line   /opt/nagios/libexec/check_tcp -H
$HOSTADDRESS$ -p 23 -w $ARG1$ -c $ARG2$

substitute the port 23 for something useful.  i use 23 for my switches and
135 for my windows boxes.

btw

check_tcp -h host -p 135 takes about .01s
check_ping -h host -p 1 takes about .01s

take your pick.



later,
dean



-----Original Message-----
From: louafi [mailto:sebastien.louafi at e-qual.fr]
Sent: Tuesday, October 29, 2002 10:19 AM
To: nagios-users at lists.sourceforge.net
Cc: 'Bishop, Dean'
Subject: RE : [Nagios-users] Execution Queue and latency


Ok my check_ping definition is :

define command{
        command_name    check_ping
        command_line   /opt/nagios/libexec/check_ping -H $HOSTADDRESS$
-w $ARG1$ -c $ARG2$
        }

I have around 70 hosts and 800 services...

I'm using perfdata to dump check result in a mysql database.


Thanks


-----Message d'origine-----
De : Bishop, Dean [mailto:dean.bishop at tcdsb.org] 
Envoyé : mardi 29 octobre 2002 15:59
À : 'louafi'; nagios-users at lists.sourceforge.net
Cc : Bishop, Dean
Objet : RE: RE : [Nagios-users] Execution Queue and latency


please send the snippet from checkcommands.cfg where "check_ping" is
defined.

also, how many hosts/services are you checking?

-----Original Message-----
From: louafi [mailto:sebastien.louafi at e-qual.fr]
Sent: Tuesday, October 29, 2002 9:37 AM
To: nagios-users at lists.sourceforge.net
Cc: 'Bishop, Dean'
Subject: RE : [Nagios-users] Execution Queue and latency


OK i give you my config files.

My services.cfg contains a lot of services like :

define service{
        host_name 10.10.10.10
        service_description PING
        check_command check_ping!3000,20%!5000,60%
        max_check_attempts 5
        normal_check_interval 5
        retry_check_interval 3
        active_checks_enabled 1
        passive_checks_enabled 0
        check_period 24x7
        parallelize_check 1
        check_freshness 0
        flap_detection_enabled 0
        process_perf_data 1
        retain_status_information 1
        retain_nonstatus_information 1
        notification_interval 60
        notification_period 24x7
        notification_options w,c,r
        contact_groups louafi
        stalking_options o,w,u,c
}

My hosts.cfg is :

define host{
        host_name 10.10.10.10
        alias 10.10.10.10
        address 10.10.10.10
        check_command check_alive
        max_check_attempts 5
        checks_enabled 1
        flap_detection_enabled 0
        process_perf_data 1
        retain_status_information 1
        retain_nonstatus_information 1
        notification_interval 60
        notification_period 24x7
        notification_options d,u,r
}

Thanks for your help


-----Message d'origine-----
De : Bishop, Dean [mailto:dean.bishop at tcdsb.org] 
Envoyé : mardi 29 octobre 2002 14:24
À : 'louafi'; nagios-users at lists.sourceforge.net
Objet : RE: [Nagios-users] Execution Queue and latency


It would help if you sent a snippet from your services.cfg and hosts.cfg

-----Original Message-----
From: louafi [mailto:sebastien.louafi at e-qual.fr]
Sent: Tuesday, October 29, 2002 5:18 AM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] Execution Queue and latency


Hi,

I have posted this problem few weeks ago without answers...

I have a high latency value for my check executions.

How to solve this problem ???

I have the following options set :

inter_check_delay_method=s

service_interleave_factor=s

max_concurrent_checks=0 

service_reaper_frequency=10

Thanks a lot.



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