[Building Sakai] 2.7 Install (JAVA_OPTS)

[Stephen Marquard]

For your JAVA_OPTS, on an 8G server you should allocate more RAM to the JVM, e.g. our production settings (on 8G servers) are:

 -Xms5000m -Xmx5000m -Xmn1g -XX:MaxPermSize=512m

It may be possible to make this bigger, but be careful not to make it so big that the java process starts using swap. For your usage levels, 5G heap is plenty.

Cheers
Stephen

>>> Warwick Chapman <warwickchapman at gmail.com> 3/17/2010 7:03 PM >>>
Hi All

I am doing my first ever install of Sakai, intended to be used by a
community of 3000-5000 people.

I have prepared a server with 8G RAM and 750G drives with two Xen VMs.

One the first VM, I intend running the application stack and on the second
VM, the database.  The intention here is that if the project grows beyond
the capability of this piece of hardware, I will move one of the VMs onto
another server.

In case it matters, Dom0 is 64-bit Centos 5.4 and the two DomU's (VMs) are
64-bit Debian Lenny 5.0.4

So, I plan to follow
http://confluence.sakaiproject.org/display/DOC/Install+Guide+-+Source+Install+(2.6)with 
the following adjustments for 2.7:

1. I will checkout the 2.7.x branch instead of the latest 2.6 stable tag:
svn co https://source.sakaiproject.org/svn/sakai/branches/sakai-2.7.x/sakai-2.7.x 

2. I will set my JAVA_OPTS to:
export JAVA_OPTS='-server -Xms512m -Xmx1024m -XX:PermSize=128m
-XX:MaxPermSize=512m -XX:NewSize=192m -XX:MaxNewSize=384m -verbose:gc
-XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Djava.awt.headless=true
-Dhttp.agent=Sakai -Dsakai.demo=true
-Dorg.apache.jasper.compiler.Parser.STRICT_QUOTE_ESCAPING=false
-Dsun.lang.ClassLoader.allowArraySyntax=true'

(Anthony suggests I do not need Strict Quote Escaping, is it safe to leave
it in there since it appears it will be required going forward)

3. <insert your adjustment here>

-- Warwick Bruce Chapman | 083 7797 094 | http://warwickchapman.com


 
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