100% CPU Usage

LG1 · April 27, 2015, 5:31pm

Do you need IPv6 for Openfire or did you already disable it? It would help a lot to know whether IPv6 is also the cause for the issues you have.

Ryan_Nix · April 27, 2015, 6:09pm

I don’t know need IPv6 support right now.

Steve_Major · April 27, 2015, 8:05pm

Not much of a Java wiz, where/how exactly do you set -Djava.net.preferIPv4Stack=true ?

foi · April 27, 2015, 10:40pm

Default location is /etc/sysconfig - openfire file. Inside this file i have uncommented line:

If you wish to set any specific options to pass to the JVM, you can

set them with the following variable.

OPENFIRE_OPTS="-Djava.net.preferIPv4Stack=true"

service openfire restart required.

Steve_Major · April 27, 2015, 10:50pm

Hrm. Probably should have mentioned that I’m on OS X, so not gonna find that file there.

I’ll poke around, but it’d be nice if it gets fixed in, oh say, 3.11.

Bimmer_Jones · April 27, 2015, 11:06pm

For Debian-type systems (including Ubuntu), add it to the DAEMON_OPTS variable in /etc/default/openfire.

OS X doesn’t use /etc/default or /etc/sysconfig. You can try adding the flag to the java command line in /usr/local/openfire/bin/extra/openfire-launchd-wrapper.sh, like this:

/usr/bin/java -server -jar "$OPENFIRE_HOME/lib/startup.jar" -Dopenfire.lib.dir=/usr/local/openfire/lib *-Djava.net.preferIPv4Stack=true* &

The tarball doesn’t add an initscript-- If you haven’t cobbled one together youself, you may try adding the command line option in ./openfire/bin/openfire

Ryan_Nix · April 28, 2015, 2:23am

Adding OPENFIRE_OPTS="-Djava.net.preferIPv4Stack=true"in /etc/sysconfig/openfire helped. CPU usage is back to normal. Thanks, FOI!

Phil_Chetcuti · April 28, 2015, 3:54am

Yep, same issues here, actually my cpu was hitting 120%

The fix outline above worked perfectly, thank you tons!!!

Ryan_Nix · April 28, 2015, 2:38pm

I spoke to soon. This morning Java CPU usage is nearly 100% again.]

Just to confirm, this is what is in the /etc/sysconfig/openfire file

If you wish to set any specific options to pass to the JVM, you can

set them with the following variable.

#OPENFIRE_OPTS="-Xmx1024m"

OPENFIRE_OPTS="-Djava.net.preferIPv4Stack=true"

akrherz · April 28, 2015, 2:40pm

Ryan,

Are you able to verify, via the command line that this flag is actually being set on the openfire process?

Ryan_Nix · April 28, 2015, 2:43pm

I haven’t, but I can. How do I check to verify?

Bimmer_Jones · April 28, 2015, 3:02pm

The ‘ps ax’ command… and a really wide terminal window.

Ryan_Nix · April 28, 2015, 3:54pm

Looks like I am indeed passing that option in the config.

[root@im ~]# ps aux | grep openfire

root 8101 0.0 0.0 5132 672 pts/0 S+ 10:53 0:00 grep openfire

daemon 30564 377 11.5 1296912 478564 ? Sl Apr27 3113:34 /opt/openfire/jre/bin/java -server -Djava.net.preferIPv4Stack=true -DopenfireHome=/opt/openfire -Dopenfire.lib.dir=/opt/openfire/lib -classpath /opt/openfire/lib/startup.jar -jar /opt/openfire/lib/startup.jar

asc · April 28, 2015, 4:21pm

I’m also seeing the above behavior. CPU usage reaches 100% after an hour or two. Openfire still responds as expected. Once CPU hits 200%, Openfire stops responding and the service must be restarted. This takes anywhere from 1 to 12 hours.

I’ve added the IPv4 setting as shown here:

[root@community openfire]# ps -ef | grep java

daemon 7710 1 4 Apr27 ? 00:50:22 /opt/openfire/jre/bin/java -Djava.net.preferIPv4Stack=true -server -DopenfireHome=/opt/openfire -Dopenfire.lib.dir=/opt/openfire/lib -classpath /opt/openfire/lib/startup.jar -jar /opt/openfire/lib/startup.jar

Attached are the relevant files.
warn.log.zip (2895 Bytes)
nohup.out.zip (7161 Bytes)
error.log.zip (7877 Bytes)

ageekhere · April 29, 2015, 3:40am

Hi, been posting in the other thread 3.10 200% CPU

What I have tried

set OPENFIRE_OPTS="-Djava.net.preferIPv4Stack=true" to /etc/default/openfire

Updated to the latest linux-image-rpi2 (I am running a raspberry pi 2 in ubuntu)

restarted

Still get the 100% to 200% or more CPU usage after a period of time (it could be a few hours to a day)

I did not have this issue with openfire 3.9.3 with java 7

Hope this helps in solving this issue

foi · April 29, 2015, 11:34am

6 days ok. Now is 100% again.

Phil_Chetcuti · April 29, 2015, 1:20pm

Yep, I’m rescinding my earlier comment. I actually hit over 500%.

Switched back to 3.10 Beta of 3-24-2015…all is well again.

Tom_Richardson · April 29, 2015, 2:28pm

I also tried the “java.net.preferIPv4Stack=true” fix. Before doing that, openfire would peg the CPU in a matter of 4-6 hours. After disabling IPv6, it’s more stable, but the behavior has returned after over a day of uptime.

Pete7 · April 29, 2015, 7:37pm

Same issue here. Enabled the IPv4 fix, still breaks with Java CPU spiking.

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

14751 daemon 18 0 1234m 538m 10m S 98.9 13.6 35:02.65 java

Here is our nohup.out after sudo kill -3

https://dl.dropboxusercontent.com/u/2586055/nohup.out

Ryan_Nix · April 29, 2015, 8:59pm

Phil - Where can I get that beta? I’d love to try it. We’ve actually had this issue since 3.9.3 so we’re stuck on OpenFire 3.8.2 for now.