Hi Juan, Just wondering why the initial memory size for the JVM. Isn't it better if we just start from the default and let it grow to a maximum size? Thx, Laszlo ----- Original Message -----
From: "Juan Hernandez" <jhernand@redhat.com> To: engine-devel@ovirt.org Sent: Wednesday, September 12, 2012 2:32:28 PM Subject: [Engine-devel] Fixed -Xmx could kill your JVM
Hello,
I recently discovered that I made a mistake in the engine service script. The problem is that were running the JVM with the "-Xms option twice, like this:
java -Xms1g -Xms1g ...
That doesn't correctly limit the max amount of heap space. It has been fixed in a recent commit [1], so with the updated code the engine will run by default like this:
java -Xms1g -Xmx1g ...
With this change you could start to see OutOfMemory errors if your engine was using a lot of memory, if you are running stress tests, for example. In that case remember that you can adjust this changing the ENGINE_HEAP_MIN and ENGINE_HEAP_MAX parameters in /etc/sysconfig/ovirt-engine. For example, to use 2g instead of the default of 1g:
ENGINE_HEAP_MIN=2g ENGINE_HEAP_MAX=2g
The restart the engine.
Let me know if you have issues.
Regards, Juan Hernandez
[1] http://gerrit.ovirt.org/7952
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