[Xymon] High CPU Load Rendering Graphs

[Vernon Everett]

Yes, and no.

Have just enabled the status page in the web config, and it appears to have
got rid of the one error message.
(Not sure how I missed the config change at initial install time)

But, I still get the other error
[warn] (128)Network is unreachable: connect to listener on [::]:443
And my graphs still take way too long to render, and send my CPU
utilisation through the roof.

Public holiday here tomorrow, so only back at this client on Tuesday.

Thanks
Vernon








On 24 April 2014 10:27, Galen Johnson <Galen.Johnson at sas.com> wrote:

>  Do you have apache trending graphs enabled?  If so, did you enable the
> status page in your apache configs?
>
>  =G=
>
>  ------------------------------
> *From:* Xymon <xymon-bounces at xymon.com> on behalf of Vernon Everett <
> everett.vernon at gmail.com>
> *Sent:* Wednesday, April 23, 2014 10:17 PM
> *To:* Xymon mailinglist
> *Subject:* [Xymon] High CPU Load Rendering Graphs
>
>   Hi all
>
>  My Xymon server 4.3.10 is burning the CPU cycles when we view multiple
> graphs, like the trends page, and takes about 5 seconds to render a single
> graph in a single-graph page view.
>
>  It's a Sun Fire X4150 with 4Gb of RAM, running Solaris 10 update 5..
>
> Version                          Location Tag
> -------------------------------- --------------------------
> Intel(R) Xeon(R) CPU           X5460  @ 3.16GHz CPU 1
>
>  Not a very powerful box, and a bit dated, but I have seen significantly
> better performance on far lesser systems.
>  So I am not really thinking the issue is with the hardware.
>  It's been slow since it was installed.
> If I view the trends column, I can see the CPU load jump from below 1 to
> over 10 at times.
>  Running prstat or top in another window while viewing the trends column,
> the process ranking by CPU gets dominated by showgraph.cgi, owned by the
> web server user.
>  Top under normal conditions.
>  CPU states: 99.9% idle,  0.0% user,  0.1% kernel,  0.0% iowait,  0.0%
> swap
> Top rendering the trends column.
> CPU states:  0.0% idle, 93.8% user,  6.2% kernel,  0.0% iowait,  0.0% swap
>
>  Also getting this error
> (128)Network is unreachable: connect to listener on [::]:443
>  in my Apache error.log file, repeated every second while rendering the
> graphs.
>  And from time to time, I get this one.
> File does not exist: /opt/csw/apache2/share/htdocs/server-status
>
>  Anybody seen anything like this?
>  Perhaps know of somewhere I can look for more info?
>
>  I have looked at this
> http://lists.xymon.com/archive/2014-January/038780.html
>  But it doesn't seem relevant. Only 2 errant files, and deleting them
> made absolutely no difference.
>
>  Other info that may be important....
> bash-3.00# ./httpd -v
> Server version: Apache/2.2.22 (Unix)
> Server built:   Jun  1 2012 05:09:20
> bash-3.00# ./httpd -V
> Server version: Apache/2.2.22 (Unix)
> Server built:   Jun  1 2012 05:09:20
> Server's Module Magic Number: 20051115:30
> Server loaded:  APR 1.4.5, APR-Util 1.3.12
> Compiled using: APR 1.4.6, APR-Util 1.3.12
> Architecture:   32-bit
> Server MPM:     Prefork
>   threaded:     no
>     forked:     yes (variable process count)
> Server compiled with....
>  -D APACHE_MPM_DIR="server/mpm/prefork"
>  -D APR_HAS_SENDFILE
>  -D APR_HAS_MMAP
>  -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
>  -D APR_USE_FCNTL_SERIALIZE
>  -D APR_USE_PTHREAD_SERIALIZE
>  -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
>  -D APR_HAS_OTHER_CHILD
>  -D AP_HAVE_RELIABLE_PIPED_LOGS
>  -D DYNAMIC_MODULE_LIMIT=128
>  -D HTTPD_ROOT="/opt/csw/apache2"
>  -D SUEXEC_BIN="/opt/csw/apache2/sbin/suexec"
>  -D DEFAULT_PIDLOG="/var/run/httpd.pid"
>  -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
>  -D DEFAULT_LOCKFILE="/var/run/accept.lock"
>  -D DEFAULT_ERRORLOG="logs/error_log"
>  -D AP_TYPES_CONFIG_FILE="etc/mime.types"
>  -D SERVER_CONFIG_FILE="etc/httpd.conf"
>
>  Thanks
>  Vernon
>
>
> --
> "Accept the challenges so that you can feel the exhilaration of victory"
> - General George Patton
>



-- 
"Accept the challenges so that you can feel the exhilaration of victory"
- General George Patton
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