Simulator Memory Usage Keeps Increasing?

Fred Leftwich · **Joined:** Fri Mar 16, 2012 12:25 am **Posts:** 36

Hello,

When I reset my simulator using monit, the memory usage is 107MB with the server hanging around 490MB.

Even if I don't do anything with the sim, when I check back the memory usage keeps expanding.

Recently I had an uptime of around 16 days and when I checked with monit, the simulator was using around 400MB and the server was at almost 800MB...

Are there some memory leaks in opensim?

Han Held · **Posted:** Mon May 28, 2012 7:16 pm

Fred Leftwich wrote:

Are there some memory leaks in opensim?

Yes. I've been told it's a good idea to restart opensim at least once a week for that reason.

Fred Leftwich · **Joined:** Fri Mar 16, 2012 12:25 am **Posts:** 36

I thought monit was going to help here. I see in the documentation http://mmonit.com/monit/documentation/m ... me_testing

Quote:

Example of restarting the process if the uptime exceeded 3 days:

check process myapp with pidfile /var/run/myapp.pid
start program = "/etc/init.d/myapp start"
stop program = "/etc/init.d/myapp stop"
if uptime > 3 days then restart

This would be perfect but it was only just added in monit 5.4...my server only has 5.2 available..ugh

Maybe I can compile the 5.4 source on it?

Han Held · **Posted:** Mon May 28, 2012 10:59 pm

I don't use monit, so I've no idea; I'm sure someone else knows,tho.

Fred Leftwich · **Joined:** Fri Mar 16, 2012 12:25 am **Posts:** 36

Yea the source compiles fine on Ubuntu 11.04 x86_64.

Downloaded and extracted the 5.4 source:

Code:

user1@server1 ~: wget http://mmonit.com/monit/dist/monit-5.4.tar.gz
user1@server1 ~: tar xvzf monit-5.4.tar.gz

Had to install the ssl and pam headers:

Code:

user1@server1 ~: sudo apt-get install libssl-dev libpam-dev

Move into the monit directory to configure and compile:

Code:

user1@server1 ~: cd monit-5.4
user1@server1 ~/monit-5.4: ./configure
user1@server1 ~/monit-5.4: make

This makes the new version 5.4 'monit' executable. The old monit 5.2.1 version was in /usr/sbin so I just moved it to make way for the new one:
(remember to stop the monit process)

Code:

user1@server1 ~/monit-5.4: sudo service monit stop
user1@server1 ~/monit-5.4: sudo mv /usr/sbin/monit /usr/sbin/monit-5.2.1
user1@server1 ~/monit-5.4: sudo cp monit /usr/sbin

Well this new monit wants the 'monitrc' file in /etc instead of /etc/monit so I linked the file:

Code:

user1@server1 ~/monit-5.4: cd /etc
user1@server1 /etc: sudo ln -s monit/monitrc monitrc

Now I could add the line into my opensim.conf file for the new uptime check:
(wherever your individual opensim.conf is)

Code:

user1@server1 /etc: vi ~/opensim/monit/conf/opensim.conf

and added the following line in the check process section:

Code:

if uptime > 7 days then restart

saved, exit and restart monit:

Code:

user1@server1 /etc: sudo service monit start

Now I am running version 5.4 and monit should restart my simulator every 7 days. Very cool monit

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