performance problems

Ludo Bosmans Ludo.Bosmans at aureusim.be
Wed Jul 6 13:51:59 CEST 2005


Hi,

Some impotant params are not posted.
Were are:
Service_interleave_factor
Inter_check_delay_method 

Regards,

Ludo


-----Original Message-----
From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-admin at lists.sourceforge.net] On Behalf Of Javier Castillo Alcibar
Sent: woensdag 6 juli 2005 12:05
To: nagios-users at lists.sourceforge.net
Subject: RE: [Nagios-users] performance problems

Hello Hendrik,

The machine is a DL380, 2xCPU 2.8Ghz, 2Gb RAM. I think it has enough hw resources..... Technically:

alhmngsrv2:/etc/nagios# vmstat 5 
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
 0  0      4 215764 222008 594536    0    0     0     0    0     1  6  4 88  2
 1  0      4 211028 222008 594536    0    0     0   246 1170     0  4  1 93  2
 1  0      4 202228 222008 594536    0    0     0   314 1182     0 13  2 83  3
 0  0      4 205300 222008 594536    0    0     0   126 1167     0  8  1 90  1
18  0      4 209660 222008 594536    0    0     0   275 1207     0  1  1 94  4
 0  0      4 209596 222008 594536    0    0     0   229 1143     0  2  1 96  2
 0  0      4 202428 222012 594532    0    0     0    77 1117     0  5  1 94  0
 2  0      4 186940 222016 594528    0    0     0   110 1145     0 19  2 80  0
 2  0      4 190076 222016 594528    0    0     0   245 1127     0  1  1 96  2
17  0      4 191020 222016 594528    0    0     0   150 1128     0  2  1 96  2
 2  0      4 198316 222016 594460    0    0     0   286 1138     0  3  1 94  2
 0  0      4 197004 222020 594456    0    0     0   168 1125     0  2  1 96  2
17  0      4 196436 222028 594448    0    0     0   396 1210     0  2  1 93  3
 9  0      4 205908 222028 594448    0    0     0   393 1244     0  3  1 92  3

 
It's very strange, because, when I start nagios, everything goes nicely, plugins execution times and latencies are ok, but two or three minutes later, nagios starts getting strange time values, for example:

1120644060      FIREWALL        PING      OK      1       HARD    9     157   FPING OK - 192.168.0.1 (loss=0%, rta=72.400000 ms) loss=0%;10;30;0;100 rta=0.072400s;2.000000;5.000000;0.000000

Executiontime=9 and Latency=157 ¿?¿? Why? This test have had no packet loss, the machine is working nicely....but...

Another strange thing I noticed: if have "max_concurrent_checks=120", why are so many times that nagios is running only 1,2,3,4 plugins at the same time?


It's true, I'm very confused....

Thx in advance,
Javier.


 
 

-----Mensaje original-----
De: Hendrik Baecker [mailto:b00mer at gmx.net] 
Enviado el: miércoles, 06 de julio de 2005 10:49
Para: Javier Castillo Alcibar
CC: nagios-users at lists.sourceforge.net
Asunto: Re: [Nagios-users] performance problems

Hello Javier,

try to figure out where your Service Latencies comes from.

Hints are:
in nagios.cfg

process_performance_data=0

http://nagios.sourceforge.net/docs/1_0/perfdata.html

Out of the performance data you can perhaps see where your latencies comes from.

Other ways were to view a 'top' and have a look to the swap memory, the load and perhaps the 'wa' CPU count

Its not quiet good to have a server swapping, to have a high load and very ugly if your server is waiting for I/O...

Javier Castillo Alcibar schrieb:

>Hi everybody!!
> 
>I have strange performance problem with my nagios 1.3 server(debian 
>sarge). It checks very slowly, I can see this info using extinfo.cgi.
>How can I debug this? Any hint/trick? Any parameter?
>
>Program-Wide Performance Information
>
>Active Checks:
>	Time Frame	 Checks Completed	
><= 1 minute:	 95 (28.1%)	
><= 5 minutes:	 283 (83.7%)	
><= 15 minutes:	 338 (100.0%)	
><= 1 hour:	 338 (100.0%)	
>Since program start:  	 338 (100.0%)	
>
>
>Metric	 Min.	 Max.	 Average	
>Check Execution Time:  	 < 1 sec	 24 sec	 7.201 sec	
>Check Latency:	 99 sec	 135 sec	 119.867 sec	
>Percent State Change:	 0.00%	 0.00%	 0.00%	
>
>
>Passive Checks:
>	Time Frame	 Checks Completed	
><= 1 minute:	 0 (0.0%)	
><= 5 minutes:	 0 (0.0%)	
><= 15 minutes:	 0 (0.0%)	
><= 1 hour:	 0 (0.0%)	
>Since program start:  	 0 (0.0%)	
>
>
>Metric	 Min.	 Max.	 Average	
>Percent State Change:  	 0.00%	 0.00%	 0.00%	
>
>#
>log_file=/var/log/nagios/nagios.log
>cfg_file=/etc/nagios/checkcommands.cfg
>cfg_file=/etc/nagios/misccommands.cfg
>cfg_file=/etc/nagios/contactgroups.cfg
>cfg_file=/etc/nagios/contacts.cfg
>cfg_file=/etc/nagios/dependencies.cfg
>cfg_file=/etc/nagios/escalations.cfg
>cfg_file=/etc/nagios/hostgroups.cfg
>cfg_file=/etc/nagios/hosts.cfg
>cfg_file=/etc/nagios/services.cfg
>cfg_file=/etc/nagios/timeperiods.cfg
>resource_file=/etc/nagios/resource.cfg
>temp_file=/var/log/nagios/nagios.tmp
>status_file=/var/log/nagios/status.log
>aggregate_status_updates=1
>status_update_interval=15
>nagios_user=nagios
>nagios_group=nagios
>enable_notifications=1
>execute_service_checks=1
>accept_passive_service_checks=1
>enable_event_handlers=1
>log_rotation_method=d
>log_archive_path=/var/log/nagios/archives
>check_external_commands=1
>command_check_interval=-1
>comment_file=/var/log/nagios/comment.log
>downtime_file=/var/log/nagios/downtime.log
>command_file=/var/log/nagios/rw/nagios.cmd
>lock_file=/var/log/nagios/nagios.lock
>retain_state_information=1
>state_retention_file=/var/log/nagios/status.sav
>retention_update_interval=60
>use_retained_program_state=0
>use_syslog=1
>log_notifications=1
>log_service_retries=1
>log_host_retries=1
>log_event_handlers=1
>log_initial_states=0
>log_external_commands=1
>log_passive_service_checks=1
>sleep_time=1
>max_concurrent_checks=120
>#service_reaper_frequency=10
>service_reaper_frequency=5
>interval_length=60
>use_agressive_host_checking=0
>enable_flap_detection=0
>low_service_flap_threshold=5.0
>high_service_flap_threshold=20.0
>low_host_flap_threshold=5.0
>high_host_flap_threshold=20.0
>soft_state_dependencies=0
>service_check_timeout=30
>host_check_timeout=30
>event_handler_timeout=60
>notification_timeout=60
>ocsp_timeout=5
>perfdata_timeout=5
>obsess_over_services=0
>process_performance_data=0
>check_for_orphaned_services=0
>check_service_freshness=1
>freshness_check_interval=60
>admin_email=nagios
>admin_pager=pagenagios
>date_format=euro
> 
>
>
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>
>  
>





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_______________________________________________
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null


-------------------------------------------------------
SF.Net email is sponsored by: Discover Easy Linux Migration Strategies
from IBM. Find simple to follow Roadmaps, straightforward articles,
informative Webcasts and more! Get everything you need to get up to
speed, fast. http://ads.osdn.com/?ad_idt77&alloc_id492&op=click
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null





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