It is JVM parameter, example:
JAVA_OPTIONS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms256m -Xmx256m"

If you want to concatenate more JVM parameters you do it like this:
JAVA_OPTIONS="-Dsolr.solr.home=/usr/share/solr $JAVA_OPTIONS"

Take a good look at the format,

Guido.

On 11/10/13 13:37, Peter Schmidt wrote:
@Guido: Itried it before and than i thought you marked just the server
options

Because the -sever causes a:

sudo service jetty start
  * Starting Jetty servlet engine.
jetty
Invalid option -server
Cannot parse command line arguments

Or should i substitute server with ...?

Options with -server:


JAVA_OPTIONS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server
-Xms256m -Xmx256m -XX:+UseG1GC -XX:MaxGCPauseMillis=50
-XX:+OptimizeStringConcat -XX:+UseStringCache
-Dsolr.solr.home=/usr/share/solr $JAVA_OPTIONS"



2013/10/11 Guido Medina <guido.med...@temetra.com>

Remember the "-server" which for Java webapps or dedicated Java services
will improve things.

Guido.


On 11/10/13 12:26, Peter Schmidt wrote:

I can report that jetty is running now with this options:

JAVA_OPTIONS="-Djava.awt.**headless=true -Dfile.encoding=UTF-8 -Xms256m
-Xmx256m -XX:+UseG1GC -XX:MaxGCPauseMillis=50 -XX:+OptimizeStringConcat
-XX:+UseStringCache -Dsolr.solr.home=/usr/share/**solr $JAVA_OPTIONS"

@Guido: I reduced the min/max heap size to 256m, i will increase this on
production server.


2013/10/11 Peter Schmidt <peter.schmidt0...@gmail.com>

  So the main problem was that the libs must be copied to the WEB-INF/lib
directory insteed of the jetty lib/ext directory. Is the fact that you
should you use WEB-INF/lib somewhere documented?


2013/10/11 Peter Schmidt <peter.schmidt0...@gmail.com>

  Not so hard switching it to Oracle JDK 7u40.
Just download it and change the JAVA_HOME path in /etc/default/jetty, so
it's not nescessary to switch java version with update-java-alternatives

The machine is 64bit :)



2013/10/11 Bill Bell <billnb...@gmail.com>

  Does this work ?
I can suggest -XX:-UseLoopPredicate to switch off predicates.

???

Which version of 7 is recommended ?

Bill Bell
Sent from mobile


  On Oct 10, 2013, at 11:29 AM, "Smiley, David W." <dsmi...@mitre.org>
wrote:

*Don't* use JDK 7u40, it's been known to cause index corruption and
SIGSEGV faults with Lucene: LUCENE-5212   This has not been unnoticed

by

Oracle.

~ David

  On 10/10/13 12:34 PM, "Guido Medina" <guido.med...@temetra.com>
wrote:
2. Java version: There are huges performance winning between Java 5, 6
    and 7; we use Oracle JDK 7u40.


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