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Re: Memory totals not adding up


From: Martin Pala
Subject: Re: Memory totals not adding up
Date: Mon, 29 Aug 2011 21:40:04 +0200

Hi,

sorry for long delay.

The configuration and the reported values are OK … the problem is simple - the attached snapshot of the Monit httpd interface report is from the main page (overview) which doesn't show the total memory usage, but only the memory usage of the process itself … in your case it matches the 'ps aux' output for the parent apache process with PID 24120 (10692kB => 0.6%). To display the total memory usage (including children) you need to click on the "Apache" link which will open details for the process and the total memory will be displayed in the table row with the title "Total memory usage (incl. children)". 

Regards,
Martin



On Aug 24, 2011, at 3:09 PM, Darhl Thomason wrote:

Hi Martin,
 
Wondering if you had any suggestions for me...
 
Thanks!
 
Darhl

On Fri, Aug 19, 2011 at 11:27 AM, Darhl Thomason <address@hidden> wrote:
Hi Martin,
 
Sorry for the delay.  Apache portion of monitrc below:

check process Apache with pidfile /var/run/apache2.pid
   group www
   start program = "/etc/init.d/apache2 start"
   stop program  = "/etc/init.d/apache2 stop"
   if totalcpu > 60% for 2 cycles then alert
   if totalcpu > 80% for 5 cycles then restart
   if totalmem > 500 MB for 5 cycles then restart
   if children > 250 then restart
   if loadavg(5min) greater than 10 for 8 cycles then restart
   if 3 restarts within 5 cycles then timeout
 
 
 

 
On Sat, Aug 13, 2011 at 7:52 AM, Martin Pala <address@hidden> wrote:
Please can you post your monit configuration for apache service?

If you're using the pidfile based monitoring, the pidfile should contain the pid of the apache master process which is parent to all apache childs. Monit then summarizes the memory of all its childs.

If you're using the pattern matching process monitoring and multiple processes match the pattern, then monit checks only the first matching process - if this process is child, then it wont see the total memory usage of the sibblings.

Regards,
Martin



On Aug 10, 2011, at 8:20 PM, Darhl Thomason wrote:

I'm using Monit 5.2.5 running on Debian Squeeze

When I look at my Monit web portal I see items similar to this:

Apache running 9d 3h 27m  0.0% 0.6% [10692 kB]

But when I do 'ps aux | grep apache' I get:
address@hidden:/# ps aux | grep apache
www-data  2009  0.0  0.8  44528 13404 ?        S    Aug09   0:22 /usr/sbin/apache2 -k start
www-data  4941  0.0  0.8  44524 13248 ?        S    Aug09   0:07 /usr/sbin/apache2 -k start
root      5194  0.0  0.0   3300   740 pts/1    S+   11:11   0:00 grep apache
www-data  5733  0.0  0.8  44524 13096 ?        S    Aug09   0:18 /usr/sbin/apache2 -k start
www-data  8829  0.0  0.8  44524 13108 ?        S    Aug09   0:16 /usr/sbin/apache2 -k start
www-data  9411  0.0  0.8  44524 13112 ?        S    Aug09   0:15 /usr/sbin/apache2 -k start
www-data  9423  0.0  0.8  44524 13104 ?        S    Aug09   0:28 /usr/sbin/apache2 -k start
www-data 13388  0.0  0.8  44256 12500 ?        S    06:05   0:01 /usr/sbin/apache2 -k start
www-data 13484  0.0  0.8  44524 12940 ?        S    06:06   0:00 /usr/sbin/apache2 -k start
www-data 17911  0.0  0.3  38296  5736 ?        S    06:22   0:00 /usr/sbin/apache2 -k start
www-data 22802  0.0  0.8  44524 13120 ?        S    Aug09   0:10 /usr/sbin/apache2 -k start
root     24120  0.0  0.6  38160 10692 ?        Ss   Aug01   1:08 /usr/sbin/apache2 -k start

it adds up to 8.1% memory.  Why is it only reporting 0.6% Memory?

There are other/similar items examples Amavis, Spamassassin, etc.

Thanks!

Darhl

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